Fujitsu Scanner 600C User Manual

Fujitsu

ScanPartner 600C

OEM Manual

Version 1.0

Doc. No. 250-0081-0

Fujitsu Inc.

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Table of Contents

1. GENERAL.................................................................................................................................................................1-1

1.1 GENERAL ...............................................................................................................................................................1-1

1.2 DEVICE CONFIGURATION ........................................................................................................................................1-3

1.2.1 Outer View......................................................................................................................................................1-3

1.2.2 Components....................................................................................................................................................1-4

2. SPECIFICATIONS ...................................................................................................................................................2-1

2.1 FUNCTIONAL SPECIFICATIONS .................................................................................................................................2-1

2.2 ENVIRONMENTAL SPECIFICATIONS ..........................................................................................................................2-2

3. OPERATION ............................................................................................................................................................3-1

3.1 REMOVING THE SHIPPING BRACKET.........................................................................................................................3-1

3.2 POWER ON/OFF ......................................................................................................................................................3-3

3.3 INDICATION PANEL.................................................................................................................................................3-3

3.4 SETTING THE SCSI ID AND CONNECTING THE INTERFACE CABLE.............................................................................3-4

3.4.1 SCSI Cable Connection ..................................................................................................................................3-5

3.5 PAPER SPECIFICATIONS ...........................................................................................................................................3-7

3.5.1 Paper Size.......................................................................................................................................................3-7

3.5.2 Paper conditions.............................................................................................................................................3-7

3.5.2.1 ADF...........................................................................................................................................................................3-7

3.5.2.2 FIatbed.......................................................................................................................................................................3-8

3.5.2.3 Items to avoid.............................................................................................................................................................3-8

3.5.3 Readable area ................................................................................................................................................3-9

3.6 DOCUMENT SETTING METHOD..............................................................................................................................3-10

3.6.1 Flatbed.........................................................................................................................................................3-10

3.6.1.1 When the document size is of letter/A4 size or smaller .............................................................................................3-10

3.6.1.2 When the document is a thick book ..........................................................................................................................3-11

3.6.2 ADF..............................................................................................................................................................3-11

3.6.2.1 Setting the ADF paper chute.....................................................................................................................................3-11

3.6.2.2 Placing the documents on the ADF paper chute ........................................................................................................3-12

3.7 CLEANING............................................................................................................................................................3-14

3.7.1 Cleaning the document cover and the document glass...................................................................................3-14

3.7.2 Cleaning inside the ADF...............................................................................................................................3-15

4. INTERFACE.............................................................................................................................................................4-1

4.1 PHYSICAL SPECIFICATIONS......................................................................................................................................4-3

4.1.1 Connection .....................................................................................................................................................4-3

4.1.2 Physical Specification.....................................................................................................................................4-4

4.1.3 Termination....................................................................................................................................................4-4

4.1.4 Pin assignments..............................................................................................................................................4-5

4.2 SCSI BUS ..............................................................................................................................................................4-6

4.2.1 System configuration ......................................................................................................................................4-6

4.2.1.1 System configuration..................................................................................................................................................4-6

4.2.1.2 Addresses of SCSI devices..........................................................................................................................................4-6

4.2.1.3 Peripheral equipment .................................................................................................................................................4-6

4.2.2 Bus signals .....................................................................................................................................................4-7

4.2.3 Bus signal drive conditions.............................................................................................................................4-8

4.3 BUS PHASES ...........................................................................................................................................................4-9

4.3.1 BUS FREE phase..........................................................................................................................................4-11

4.3.2 ARBITRATION phase ...................................................................................................................................4-12

4.3.3 SELECTION phase .......................................................................................................................................4-14

4.3.4 INFORMATION TRANSFER phases.............................................................................................................4-15

4.3.4.1 Asynchronous information transfer ...........................................................................................................................4-16

4.4 COMMANDS..........................................................................................................................................................4-18

4.4.1 RESERVE UNIT command............................................................................................................................4-19

4.4.1.1 RESERVE UNIT command: COMMAND phase (initiator Õ target).........................................................................4-20

4.4.2 RELEASE UNIT command............................................................................................................................4-21

4.4.2.1 RELEASE UNIT command: COMMAND phase (initiator ® target).........................................................................4-21

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4.4.3 INQUIRY command ......................................................................................................................................4-22

4.4.3.1 INQUIRY command: COMMAND phase (initiator ® target) ...................................................................................4-22

4.4.3.2 Inquiry data: DATA IN phase (target ® initiator) .....................................................................................................4-24

4.4.4 REQUEST SENSE command.........................................................................................................................4-26

4.4.4.1 REQUEST SENSE command: COMMAND phase (initiator ® target) .....................................................................4-26

4.4.4.2 Sense data: DATA EN phase (target ® initiator)......................................................................................................4-27

4.4.5 SEND DIAGNOSTIC command ....................................................................................................................4-29

4.4.5.1 SEND DIAGNOSTIC command: COMMAND phase (initiator ® target) .................................................................4-30

4.4.5.2 Contents of self-test..................................................................................................................................................4-31

4.4.5.3 Results of self-test....................................................................................................................................................4-31

4.4.6 TEST UNIT READY command ......................................................................................................................4-31

4.4.6.1 TEST UNIT READY command: COMMAND phase (initiator ® target) ..................................................................4-32

4.4.6.2 Acknowledgment......................................................................................................................................................4-32

4.4.7 SET WINDOW command ..............................................................................................................................4-33

4.4.7.1 SET WINDOW command: COMMAND phase (initiator ® target)...........................................................................4-33

4.4.7.2 Window date: DATA OUT phase (initiator ® target) ...............................................................................................4-34

4.4.7.3 Update of ScanPartner 600C OEM manual...............................................................................................................4-39

4.4.7.4 B&W Scanning Vender unique parameters...............................................................................................................4-39

4.4.7.4.1 Vendor unique identification code: Byte 28 .......................................................................................................4-40

4.4.7.4.2 Paper size: byte 35 ............................................................................................................................................4-40

4.4.7.5 Color Scanning Vender unique parameters ...............................................................................................................4-41

4.4.7.5.1 Vendor unique identification code: Byte 28 .......................................................................................................4-41

4.4.7.5.2 Parameter length: Byte 29 .................................................................................................................................4-41

4.4.7.5.3 Color scanning parameters ................................................................................................................................4-41

4.4.8 OBJECT POSITION command......................................................................................................................4-43

4.4.8.1 OBJECT POSITION command: COMMAND phase (initator ® target) ....................................................................4-44

4.4.8.2 Acknowledgment......................................................................................................................................................4-45

4.4.8.3 ADF sequence..........................................................................................................................................................4-46

4.4.9 READ command ...........................................................................................................................................4-46

4.4.9.1 READ command: COMMAND phase (initiator ® target).........................................................................................4-47

4.4.9.2 DATA IN phase (target ® initiator) .........................................................................................................................4-48

4.4.10 Scan command............................................................................................................................................4-49

4.4.10.1 SCAN Command phase (initiator ® target)............................................................................................................4-49

4.5 STATUS: STATUS PHASE (TARGET ® INITIATOR)..................................................................................................4-50

4.6 MESSAGES ...........................................................................................................................................................4-51

4.6.1 ATN detection...............................................................................................................................................4-51

4.6.2 Message types...............................................................................................................................................4-52

4.6.2.1 COMMAND COMPLETE (X'00'): MESSAGE IN phase (target ® initiator) ............................................................4-52

4.6.2.2 INITIATOR DETECTED ERROR (X'05'): MESSAGE OUT phase (initiator ® target).............................................4-52

4.6.2.3 ABORT (X'06'): MESSAGE OUT phase (initiator ® target).....................................................................................4-53

4.6.2.4 MESSAGE REJECT (X'07'): MESSAGE IN/OUT phase (initiator ® target) ............................................................4-53

4.6.2.5 NO OPERATION (X'08'): MESSAGE OUT phase (initiator ® target)......................................................................4-54

4.6.2.6 MESSAGE PARITY ERROR (X'09'): MESSAGE OUT phase (initiator ® target)....................................................4-54

4.6.2.7 BUS DEVICE RESET (X'0C'): MESSAGE OUT phase (initiator ® target) ..............................................................4-54

4.6.2.8 IDENDIFY (X'80' TO X'FF'): MESSAGE OUT phase (initiator ® target).................................................................4-55

4.7 COMMAND SEQUENCE ..........................................................................................................................................4-56

4.7.1 Initial sequence ............................................................................................................................................4-56

4.7.2 Read sequence..............................................................................................................................................4-57

4.7.2.1 Read sequence for B&W mode.................................................................................................................................4-57

4.7.3 READ command sequence ............................................................................................................................4-57

4.7.3.1 Single READ ...........................................................................................................................................................4-57

4.7.3.2 Multiple READ........................................................................................................................................................4-58

4.8 STATUS TRANSITION OF LOGICAL UNIT .................................................................................................................4-59

4.9 ERROR TABLE ......................................................................................................................................................4-60

4.10 ITEMS FOR SPECIFYING WINDOW.........................................................................................................................4-61

5. DIAGNOSTICS.........................................................................................................................................................5-1

5.1 ONLINE DIAGNOSTICS .............................................................................................................................................5-1

5.2 OFFLINE DIAGNOSTICS ............................................................................................................................................5-2

5.3 DIAGNOSTIC FLOWCHARTS......................................................................................................................................5-3

5.3.1 Group 1 error flowchart (Lamp assembly).......................................................................................................5-3

5.3.2 Group 2 error flowchart (Flatbed/ADF motor)................................................................................................5-3

5.3.3 Group 3 error flowchart (paper in ADF paper tray)........................................................................................5-4

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5.3.4 Group 3 error flowchart (no paper in ADF paper tray)...................................................................................5-5

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1. General

1.1 General

1.2 Device Configuration

1.1 General

Scan Partner 600C image scanners produce excellent electronic images

from documents using the high quality optical image scanning technology

and output to the host system via SCSI interface.

On the standard flat-bed, the Scan Partner 600C can scan a single loose

page or a single page of a bound book. The standard flat-bed can

accommodate a letter size/A4 page. The Scan Partner has an automatic

document feeder (ADF) that can accommodate up to 50 pages.

The Scan Partner outputs data on the Small Computer System Interface

(SCSI). Figure 1.1 is the functional block diagram.

1-1

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To host

110/220 VAC

Power supply

LED display

Sensor input

ADF section

SCSI

controller

Control

section

Mainboard

Video Circuit

ADF motor ADF sensor

Flatbed

motor

Optical unit

Inverter

Lamp unit

Figure 1-1 System Block Diagram

1-2

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1.2 Device Configuration

1.2.1 Outer View

Figure 1.2 shows the outer view and device configuration of the ScanPartner 600C/OEM SP600C.

Figure 1-2 ScanPartner 600C Outer View

1-3

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1.2.2 Components

1. Document Cover

The document cover holds the document in place during scanning so that the document does not move.

2. Document glass

Place the document to be read on the document glass.

3. Automatic document feeder (ADF)

The automatic document feeder (ADF) feeds documents in the scanner automatically.

4. Paper tray extension

The extension prevents documents from bending.

5. Power switch

The power switch is used to turn the scanner on and off.

6. LED panel

The LED panel indicates the status of the scanner (Power, Ready, and Jam).

7. Input paper chute

The input paper chute stacks the documents to be fed by the ADF.

8. ADF open/close lever

The ADF open/close lever is used to open and close the ADF to remove paper jammed in the ADF.

9. Power connector

The power cable is connected to the power connector to supply the scanner with AC power.

10. SCSI interface connector

The interface is connected to the interface connector. The scanner is connected to the host system

through the interface cable.

1-4

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2. Specifications

2.1 Functional Specifications

2.2 Environmental Specifications

2.1 Functional Specifications

Table 2.1 lists the functional specifications.

Table 2-1 Functional Specifications

No.

Item

Specifications

Remarks

Technology

Operating method

Maximum document size

CCD linear image sensor

Flatbed scanning/ADF scanning

Legal (11x14) for ADF

Letter/A4 for flatbed

4.2 MHz

Light source

Optical resolution

Scanning speed

Cold cathode fluorescent lamp

600 x 1200 dpi

Letter: 3 sec/200 dpi

A4: 3.2 sec/200 dpi

Legal: 3.5 sec/200 dpi

256 steps, 16 steps

Gray scale

Halftone

Provides four halftone patterns

Automatic document feeder

1. Paper chute capacity

2. Stacker capacity

3. Reading speed

4. Paper empty detection

5. Cover open detection

Interface

Maximum 50 pages (legal, 14-28 lbs.)

Letter size paper 200 dpi = 15 ppm

Provided

SCSI 2

2-1

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2.2 Environmental Specifications

Table 2.2 lists the environmental specifications.

Table 2-2 Environmental Specifications

No. Item

Specifications

Remarks

Physical

dimension

(mm)

Height

165 ± 2mm

6.3 ± 0.08 inches

Width

568 ± 2mm

22.36 ± 0.08

inches

Depth

348 ± 2mm

13.3 kg

13.7 ± 0.08 inches

24.89 lbs

Weight

Power

Voltage (VAC)

100- 240V (Auto switching)

requirements

Frequency (Hz)

Power cable

length (m)

47 to 63

3 or less

Power

Operaing

35 watts

consumption

(watts)

Non-opearting

13 watts

Acoustic noise (dB)

Operating: 56 dBA or less

Standby: 46 dBA or less

10 to 40ºC (50ºF to 104ºF)

Temperature Operating

(ºC)

Gradient: 10ºC/hr.

(18ºF/hr.)

Non-operating

Operating

-40 to 60ºC(-40ºF to 140ºF)

10% to 90% RH

Relative

humidity (%)

No condensation

Non-operating

Vibration (G) Operating

10 to 90 RH

0.25

5-22-500 Hz

Direction = 3 Axial

Non-operating

Safety Regulations

1.0

UL1950, 3rd Edition

CSA C22-2 No. 950-M93

European Norm

EN 60950: 1988+A1+ A2

EMC

FCC Part 15 Subchapter J Class B

DOC Class B (Canada)

European Directive 89/336 (CE-Mark)

2-2

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3. OPERATION

3.1 Removing the Shipping Bracket

3.2 Power On/Oft

3.3 Indication Panel

3.4 Setting the SCSI-ID and Connecting the Interface Cable

3.5 Paper Specifications

3.6 Document Setting Method

3.7 Cleaning

3.1 Removing the Shipping Bracket

The scanner has a bracket that fixes the position of the carrier unit during transportation. The bracket must be

removed from the base of the scanner.

If the power is turned on before the bracket has been removed, the Alarm lamp turns on. Before proceeding,

turn off the power, disconnect the power cable, and remove the bracket.

CAUTION

Do not turn the scanner upside down when removing the bracket.

3-1

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1. Remove the shipping retainer

2. Fasten the shipping retainer

3-2

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3.2 Power On/Off

The power switch is on the right side of the image scanner (See Figure 3.1)

Turn the power switch to the “I” side, the power LED on the indication panel will light on.

Turn the power switch to the “O” side, the power LED on the indication panel will go out.

Figure 3-1 Power Switch

3.3 Indication Panel

Figure 3.2 shows the indication panel, and Table 3.1 lists the names and functions of the indicator.

Figure 3-2 Indication Panel

3-3

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Table 3-1 Names and functions of the indicators

Name

Color

Function

Power

Amber Lights on when the power is turned on

Ready

Paper jam

Green

Red

Lights on when the scanner is ready to receive commands from the host computer

Lights on when paper jam occurs. This indicator along with Ready indicator also indicates other

error conditions. See Chapter 5 Test Mode for details.

3.4 Setting the SCSI ID and Connecting the Interface Cable

Use the address switches to set the device address.

Figure 3-3 Signal cable connection

0 to 7

Content

Available

Offline self-test

Table 3-2 SCSI ID setting

3-4

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The devices linked to the SCSI interface are daisy-chained with one another. A terminator is attached to the

ends of the interface cable. User can buy the SCSI cable in computer stores. The specifications of the SCSI

cable is as shown below.

Name:

SCSI Cable

Cable Specification

50 pins to 25 or 50 pins, shielded Amphenol

Cable Length:

Less than or equal to 6 meters.

3.4.1 SCSI Cable Connection

There are two configurations for the connection.

Configuration I: The number of devices attached to the SCSI bus (including the host PC) is three. The

scanner is located in the middle of the connection, as shown below.

Host PC

Scanner

SCSI device

Set terminator

switch at “off”

position

Terminator

1. Set scanner’s SCSI terminator switch off.

2. Plug one end of the SCSI cable into the SCSI connector of the host PC, and the other end of

the cable to the scanner.

3. Plug one end of the SCSI cable into the SCSI connector of the third device, and the other end of

the cable to the other scanner.

3-5

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Configuration II: the number of devices attached to the SCSI bus (including the host PC) is three. The

scanner is located at the end of the connection, as shown below.

Host PC

SCSI device

Scanner

Set terminator switch at “on”

position

Terminator

If there is already another device linked to the host via SCSI cable, remove the terminator from that device. If

the terminator can not be removed, it is recommended that the connection of Configuration I be used.

1. Set scanner’s SCSI terminator switch on

2. Plug one end of the SCSI cable to one female connector of the previous device or the host.

SCSI specifications require that:

1. Only one terminator may be attached to each end of the daisy chain.

2. The total length of the daisy chain must not exceed 6 meters. The vendor suggests that the SCSI cable be two

or three meters in length to allow other devices to be attached to the SCSI bus.

3. Each device on the chain will be assigned a different ID. Devices with the same SCSI ID will cause

them to malfunction.

4. There is no restriction on the position of the devices on the daisy chain.

3-6

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3.5 Paper Specifications

This section provides the readable paper specifications for the automatic document feeder (ADF).

3.5.1 Paper Size

Feeding direction

Maximum

Minimum

216

356

100

Unit: mm

Figure 3-4 Paper size specifications

3.5.2 Paper conditions

3.5.2.1 ADF

a) Paper quality

Wood-free paper

PPC paper; Specified by XEROX Corporation

b) Paper specifications

Legal size, 14~28 lbs

3-7

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3.5.2.2 FIatbed

(a) Paper quality

No condition

(b) Ream weight

No condition

Square is preferred.

3.5.2.3 Items to avoid

Paper such as the following cannot be fed by ADF.

(a) Paper with clips or staples.

(b) Paper with ink not dry.

(C)Paper with inconsistent thickness, such as an envelope.

(d) Paper with large rumples or curls.

(e)Paper with folds or tears.

(f) Tracing paper.

(g) Coating paper.

(h) Carbonless paper.

(i) Paper smaller than A5 size or larger than A4 width.

(j) Items other than paper, such as clothes, metal sheet, or OHP film.

(k) Photographic paper.

(1) Paper that has notches on its side.

(m)Paper that has a shape other than square.

(n) Very thin paper.

(o) Important document not to be damaged.

Use the flatbed to perform scanning when reading paper of items e to o.

3-8

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3.5.3 Readable area

216

356

Feeding direction

Unit: mm

Figure 3-5 ADF readable area

3-9

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3.6 Document Setting Method

3.6.1 Flatbed

Figure 3-6 Flatbed reading

3.6.1.1 When the document size is of letter/A4 size or smaller

If the document is to be read on the flat-bed, following the steps below.

Open the document cover.

Put the document on the document glass with the image face down with the upper end to the left. Correct any

curls or folded documents.

Position the left side and upper end of the document in line with the reference frame so that the upper-left

comer of the document coincides with the upper-left of the reference frame.

If the document is not set correctly, reading is not done correctly.

Close the document cover slowly.

If the document cover is closed too quickly, the document may be moved. During reading, do not press or open

the document cover.

Start the reading.

After reading ends, open the document cover and remove the document.

3-10

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3.6.1.2 When the document is a thick book

1.Open the document cover and place it on the glass surface.

2.If the document is thick, do not close the document cover.

That part of the document in close contact with the glass will be read correctly but any part that is not in contact

with the glass may be unclear or distorted so care must be taken.

3.6.2 ADF

3.6.2.1 Setting the ADF paper chute

Figure 3-7 Setting the ADF paper chute

To use ADF to read the documents, set the ADF paper chute as follows:

1. Raise the unattached end of the input paper chute to about 45 degrees, as shown in Figure 3.7.

2. Pull down the metal bracket from under the paper chute.

3. Click the metal bracket into the grips on the document cover.

4. Pull the chute extension up.

3-11

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3.6.2.2 Placing the documents on the ADF paper chute

Perform the following steps to place the document in the ADF paper chute. If these steps are not followed

closely, a feed error may occur.

Figure 3-8 Placing the document on the ADF paper chute

1. Place the document upside-down.

2. Angle the document sheets as shown. (See "Angling the document sheets" that follows for an

explanation of this procedure.)

3. Spread open the right and left guides of the ADF paper chute, and set them approximately 5 mm wider

than the document width.

3-12

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4. Place the document face down on the ADF paper chute, and put the ends of the bottom 2 or 3 sheets into

the auto feeder.

5. C]ose the right and left guides against side of the document. (Skewing may occur if a gap exists between

the guides and document.)

6. Slide the pages down into the chute until they hit the far end of the auto feeder hole.

(a) Angling the document sheets

1. Place the document face down on a flat surface, with the top of the page to the left (a).

2. Lift the sheets with both hands. Take a maximum 4 mm thickness of sheets.

3. Hold the sheets tightly with your left hand and bend the sheets as shown in (b).

4. Then grip tightly with your right hand, loosen the grip of your left hand, and straighten the sheets as

shown in (c).

5. Repeat operations 3 and 4 as often as necessary with the entire document has been angled.

(b) Separating the sheets for easy feeding

Take a 2 to 4 mm thickness of sheets. Lightly hold both ends with both hands. Bend the sheets as shown.

Hold the sheets tightly with both hands then straighten the sheets. This operation separates the sheets for

easy feeding into the ADF. Repeat this operation two or three times. Turn the stack of sheets over and repeat

the entire operation.

3-13

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3.7 Cleaning

3.7.1 Cleaning the document cover and the document glass

Use a clean and soft cloth moistened with non-corrosive solvent such as alcohol (with purity above 99.5%)

and wipe the document cover and flatbed document glass slightly, as shown in Figure 3.9.

Figure 3-9

3-14

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3.7.2 Cleaning inside the ADF

Clean the ADF according to the procedure that follows when the following situations frequently occur:

· Documents are not fed smoothly.

· Several documents are fed in at the same time.

· Reading result is poor.

Cleaning Procedure:

1. Push the ADF cover release button, and open the ADF module.

2. Figure 3.10 shows the locations of pad, scrub roller, feeding rollers and follow rollers, and ADF

calibration white sheet.

Figure 3-10

3. Use a clean and soft cloth moistened with a non-corrosive solvent like ALCOHOL (with purity

above 99.5%) and wipe them slightly.

3-15

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4. INTERFACE

4.1 Physical Specifications

4.2 SCSI Bus

4.3 Bus Phases

4.4 Commands

4.5 Status: STATUS phase (target initiator)

4.6 Messages

4.7 Command Sequence

4.8 Status Transition of Logical Unit

4.9 Error Table

4.10 Items for Specifying Window

This image scanner and the host are connected via an 8-bit parallel interface. The interface follows the

ANSI (American National Standards Institute) SCSI 2 (Small Computer System Interface 2) Revision 10c.

This chapter provides an overview of SCSI (minimum information necessary for understanding this

scanner), as well as descriptions peculiar to the scanner. For details of SCSI, refer to the ANSI standard,

The following terms are needed to understand this section.

SCSI device: A host adapter or a target controller that can he attached to the SCSI bus

Initiator: An SCSI device (usually a host system) that requests an I/O process to be performed by

another SCSI device (a target).

Target: An SCSI device that performs an operation requested by an initiator

Logical Unit: A physical or virtual peripheral device that is addressable through a target

Range of support

1. System Configuration

This scanner operates under the multiinitiator, multitarget environment. An initiator function is not

provided. This scanner incorporates an integrated target and logical unit (image scanner).

SCSI-ID:0 to 7, variable by DIP switch Logical unit number (LUN): 000, fixed

2.Bus phases

This scanner supports all phases except reselection phase.

4-1

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Commands

The following commands are supported by this scanner:

INQUIRY

OBJECT POSITION

READ

RELEASE UNIT

REQUEST SENSE

RESERVE UNIT

SEND DIAGNOSTIC

SET WINDOW

TEST UNIT READY

SCAN

A control byte is not supported. If value other than X’OO' is specified. an error is generated.

Statuses

The following statuses are supported by this scanner:

BUSY

CHECK CONDITION

GOOD

RESERVATION CONFLICT

Messages

The following messages are supported by this scanner:

ABORT

BUS DEVICE RESET

COMMAND COMPLETE

IDENTTIY

INITIATOR DETECTED ERROR

MESSAGE PARITY ERROR

MESSAGE REJECT

NO OPERATION

Others

The bits and fields for which the word 'Reserved" is described are checked. For a non-zero, an error is

returned.

4-2

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4.1 Physical Specifications

The devices linked to this interface are daisy chained with each other. A terminator is attached to the ends of

the interface cable. Interface specifications are as shown below

4.1.1 Connection

SCSI device

Terminator

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4.1.2 Physical Specification

Table 4-1 SCSI physical specifications

Item

Specifications

Driver/Receiver

Connector

Cable

Single-ended

50 Contact Shielded Low Density

6 m

Max. cable length

Characteristic impedance

Cable type

132 W

25 signal twisted pair

Stub wire

Terminator

£ 0.1 mm (from main cable in scanner to internal wiring)

See the figure under (3).

Signal level

Driver/receiver

Output characteristics

Open collector or three-state driver

Low level (true) = 0.0 to 0.5 VDC High Level (false)=2.5 to 5.25 VDC

Output current = 48 mA (corresponding output voltage £ 0.5V)

Low level (true) = 0.0 to 0.8 VDC High level (false) = 2.0 to 5.25

VDC Input load = -0.4 mA max. (at 0.4V input voltage Input

hysteresis = 0.2 VDC min.

Input characteristics

Connector pin assignments for lines

See (4).

4.1.3 Termination

220W

330W

4-4

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4.1.4 Pin assignments

Physical Specifications

Signal Name Pin Number

Signal Name

GND

Reserved

(Open)

Reserved

GND

OND

GND

-DB (0)

-DB(1)

-DB(2)

-DB(3)

-DB(4)

-DB(5)

-DB(6)

-DB(7)

-DB(P)

GND

Reserved

TERMPWR

Reserved

GND

-ATN

GND

-BSY

-ACK

-RST

-MSG

-SEL

-C/D

-REQ

-I/O

Note: Reserved pins are connected to GND.

Figure 4-1Pin assignment

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4.2 SCSI Bus

4.2.1 System configuration

4.2.1.1 System configuration

The SCSI bus connects up to eight SCSI units, each linked with a daisy chain. Both ends of the daisy chain require a

terminator.

Each SCSI unit operates as an initiator or a target, so that a series of operations are performed between an initiator

and target pair.

The system may be configured with any combination of initiators and targets as long as the number of the initiators

and targets combined does not exceed eight.

4.2.1.2 Addresses of SCSI devices

Every SCSI device on the bus is assigned a unique address (SCSI ID) that corresponds to the data bus bit number;

ID#7 through ID#10 correspond to DB7 through DB0. The SCSI ID provides identification for specifying particular

SCSI device when an initiator selects a target or when a target reconnects an initiator.

SCSI ID also represents the priority for using the bus in the arbitration phase. (A description regarding the bus phase

is given later;) Priorities are given in the descending order of data bus bit numbers (DBn), with the highest priority

placed on ID#7(DB7) and the lowest priority on ED#0(DB0).

4.2.1.3 Peripheral equipment

With the basic specification, an initiator can designate up to eight peripheral devices (logical units) belonging tt a

single target, where the peripheral devices are used as the I/O units of the initiator; Logical units are identified and

selected by specifying their LUNs (logical unit numbers) in the IDENTIFY message or command (CDB: command

descriptor block).

This scanner is equipped with a target and a logical unit, and its LUN is 000.

4-6

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4.2.2 Bus signals

Table 4-2 Bus signals

Signal name

Data

Type of signal

Initiator

Target

Eight data-bit signals, plus a parity-bit signal that forms a DATA

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

BUS. DB(7) is the most significant bit and has the highest

priority during the ARBITRATION phase. Bit number,

significance and priority decease downward to DB(O). A data bit

is defined as one when the signal value is true. A data bit is

defined as zero when the signal value is false. Data parity DB(P)

shall be odd. Parity is undefined during the ARBITRATION

phase.

(Data Bus n)

DBP

(Data Bus Parity)

BSY (Busy)

An "ORtied" signal that indicates that the bus is being used

Control Signals

An "ORtied" signal used either by an initiator to select a target or

by a target to reselect an initiator

SEL (Select)

RST (reset)

An "ORtied" signal that indicates the RESET condition

C/D (Control/Data)

I/O (Input/Output)

MSG Message

The C/D, I/O, and MSG signals are used to distinguish between

the different information transfer phases.

REQ (request)

A signal driven by an initiator to indicate a request for a

REQ/ACK data transfer handshake

A signal driven by an initiator in indicate and acknowledgment

for REQ/ACK data transfer handshake.

A signal driven by an initiator to indicate the ATTENTION

condition

ACK (acknowledge)

ATN (Attention)

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4.2.3 Bus signal drive conditions

SCSI devices drive signals of the SCSI bus. The types of SCSI devices are summarized in the following table, showing

the signals that they can drive for each operating phase of the interface.

There are two kinds of signal driving methods, OR tied and NON-OR tied, as shown in Table 4.2. During an interface

operating sequence. the BSY signal could be driven simultaneously by two or more SCSI units when the data bus is in

the ARBITRATION or RESELECTION phase. This situation also occurs with the RST signs (Reset). These two signals

must be ORtied. For other signals, either of the two methods may be used: further more, different drive methods may

coexist for a signal on the bus.

Table 4-3 Bus phases vs. signal drive sources (1/2)

Signal

Bus phase

C/D

DB7 to 0

DBP

BSY

SEL

'10

MSG

REQ

ACK

ATN

RST

BUSFREE

ARBITRATION

SELECTION

RESELECTION

COMMAND

DATAIN

I&T

l&T

DATAOUT

STATUS

MESSAGE IN

MESSAGE OUT

The signal shall be released, since it is not being driven by any SCSI device.

The signal shall be driven by all SCSI devices that are actively arbitrating.

If driven, this signal be driven only by the active initiation

ID:

If the signal is driven, it shall be driven only by the active target.

The signal shall be driven by the one SCSI device that wins arbitration.

A unique data bit (the SCSI ID) shall be driven by each SCSI device that is actively arbitrating.

The other seven data bits shall be released (shall not be driven) by this SCSI device. The parity bit

(DB(P)) may be released or driven to the true state, but shall never be driven to the false state

during this phase.

I&T:

The initiator and target drive the signal according to the interface operating sequence. The

RESELECTION phase includes a sequence in which the initiator and target simultaneously drive

the signal.

The signal shall be driven by the initiator, target, or both, as specified in the SELECTION phase and RESELECTION

phase.

4-8

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Table 4-4 Method of driving the interface signal

OR connection

NON_OR connection

False No signal is driven by any

SCSI device. Signal status is

The signal is driven false by

a certain SCSI device

made false by the termination (initiator or target), or is not

resistor circuits. driven by any SCSI device

A SCSI device drives the signal true.

True

4.3 Bus Phases

The SCSI architecture includes the following eight distinct phases:

BUS FREE phase

ARBITRATION phase

SELECTION phase

COMMAND phase

DATA phase

INFORMATION TRANSFER phase

STATUS phase

}

MESSAGE phase

The SCSI bus can never be in more than one phase at any given time.

The following diagram shows how each phase transmits to another.

Reset

MESSAGE OUT

COMMAND

SELECTION

DATA IN or

DATA OUT

BUS FREE

ARBITRATION

STATUS

MESSAGE IN

Figure 4-2 Phase sequence

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The signal delay times for each bus phase are defined as follows-

Table 4-5 Signal delay times definition

No.

Item

Time

Definition

Arbitration

delay

2.4 æs

The minimum time an SCSI device shall wait from

asserting BSY for arbitration until the DATA BUS can

be examined to see if arbitration has been won. There is

no maximum time.

Assertion

period

90 ns

The minimum time that a target shall assert REQ (or

REQB) while using synchronous data transfers. Also,

the minimum time that an initiator shall assert ACK

while using synchronous data transfers.

Bus Clear

delay

800 ns

The maximum time for an SCSI device to stop driving

all bus signals after: (1) The BUS FREE phase is

detected (BSY and SEL both false for a bus settle delay)

(2) SEL is received from another SCS] device during the

ARBITRATION phase (3) The transition of RST to true.

For the first condition listed. the maximum time for an

SCSI device to clear the bus is 1200 nanoseconds from

BSY and SEL first becoming both false. If an SCSI

device requires more than a bus settle delay to detect

BUS FREE phase, it shall clear the bus within a bus

clear delay minus the excess time

Bus free delay

Bus set delay

800 ns

1.8 _s

The minimum time that an SCSI device shall wait from

its detection of the BUS FREE phase (BSY and SEL

both false

The maximum time for an SCSI device to assert BSY

and its SCSI ID bit on the DATA BUS after it detects

BUS FREE phase (BSY and SEL both false for a bus

settle delay) for the purpose of entering the

ARBITRATION phase

Bus settle

delay

400 ns

10 ns

The minimum time to wait for the bus to settle after

changing certain control signals as called out in the

protocol definitions

The maximum difference in propagation time allowed

between any two SCSI bus signals measured between

any two SCSI devices.

The maximum time for an initiator to release the DATA

BUS signals following the transition of the I/O signal

from false to true.

Cable skew

delay

Data release

delay

400 ns

Deskew delay

Disconnection

45 ns

The minimum time required for deskew of certain

signals

The minimum time that a target shall wait after

releasing BSY before participating in an

200 æs

ARBITRATION phase when honoring a DISCONNECT

message from the initiator

4-10

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Table 4.5 Signal delay times definition

No.

Item

Time

definition

Hold time

45 ns

The minimum time added between the assertion of

REQ (Or REQB) or ACK (or ACKB) and the

changing of the data lines to provide hold time in the

initiator or target while using synchronous data

transfers. REQB and ACKIB timings only apply to

optional wide data transfers.

Negation

90 ns

The minimum time that a target shall negate REQ (Or

REQB) while using synchronous data transfers. Also,

the minimum time that an initiator shall negate ACK

(or ACKB) while using synchronous data transfers.

REQB and ACKB timings only apply to optional

wide data transfers.

Power-on to

selection

time

10 sec

(recommended)

The recommended maximum time from power

application until an SCSI target is able to respond

with appropriate status and sense data to the TEST

UNIT READY, INQUIRY, and REQUEST SENSE

commands

The recommended maximum time after a hard

RESET condition until an SCSI target is able to

respond with appropriate status and sense data to the

TEST UNIT READY, INQUIRY and REQUEST

SENSE commands

Reset to

selection

time

250 ms

(recommended)

Reset hold

25 æs

The minimum time over which RST must be kept

asserted

The maximum time required from the moment when

selection or deselection of an initiator or target is

detected until BSY is asserted

Selection

abort time

200 æs

Selection

timeout

delay

Transfer

period

250 ms

(recommended)

The minimum time required for an initiator or target

in the selection or deselection phase to wait for a

BSY response before it starts the timeout procedure

The minimum allowable period, during sync data

transfer, between the start of consecutive REQ pulses

and the start of consecutive ACK pulses

4.3.1 BUS FREE phase

The BUS FREE phase is used to indicate that no SCSI device is actively using the SCSI bus. and that it is available.

SCSI devices shall detect the BUS FREE phase after the SEL and BSY signals are both false for at least a bus settle

delay.

SCSI devices shall release all SCSI bus signals within a bus clear delay after the BSY and SEL signals become

continuously false for a bus settle delay.

4-11

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Bus settle delay

Bus clear delay

BSY

SEL

others

....................................................................................................................

Bus Free phase

4.3.2 ARBITRATION phase

The ARBITRATION phase allows one SCSI device to gain control of the SCSI bus so that it can initiate or resume an

I/O process. The procedure for an SCSI device to obtain control of the SCSI bus is as follows:

1. The SCSI device shall first wait for the BUS FREE phase to occur;

2. The SCSI device shall wait a minimum of a bus free delay after detection of the BUS FREE phase (i.e. after the

BSY and SEL signals are both false for a bus settle delay) before driving any signal.

Following the bus free delay in Step 2, the SCSI device may arbitrate for the SCSI bus by asserting both the

BSY signal and its own SCSI ID, however, the SCSI device shall not arbitrate (i.e. assert the BSY signal and its

SCSI ID) if more than a bus set delay has passed since the BUS FREE phase was last observed.

4. After waiting at least an arbitration delay (measured from its assertion) the SCSI device shall examine the

DATA BUS. If a higher priority SCSI ID bit is true on the DATA BUS (DB(7) is the highest), then the SCSI

device has lost the arbitration and the SCSI device may release its signals and return to Step I. If no higher

priority SCSI ID bit is true on the DATA BUS, then the SCSI device has won the arbitration and it shall assert

the SEL signal. Any SCSI device other than the winner has lost the arbitration and shall release the BSY signal

and its SCSI ID bit within a bus clear delay after the SEL signal becomes true. A SCSI device that loses

arbitration may return to Step 1.

5. The SCSI device that wins arbitration shall wait at least a bus clear delay plus a bus settle delay after assert mg

the SEL signal before changing any signals.

4-12

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ARBITRATION phase

Bus settle

delay

Bus free

delay

BSY

SEL

SCSI

ID7

ID3

ID1

Bus clear delay +

bus settle delay

Bus set delay

arbitration delay

BSY

SEL

Bus free

delay

DB(7)

Bus clear delay

Bus set delay

BSY

SEL

Bus free

delay

DB(3)

arbitration delay

BSY

SEL

Bus free

delay

DB(1)

ID7: Succeeds in ARBITRATION

ID3: Detects the SEL signals of other SCSI unit

ID1: Detects the SCSI ID with higher priority than itself

Ñ : The point at which the BUS FREE phase is detected by each SCSI unit

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4.3.3 SELECTION phase

The SELECTION phase allows an initiator to select a target for the purpose of initiating some target function (e.g.,

READ or WRITE command). During the SELECTION phase the I/O signal is negated so that this phase can be

distinguished from the RESELECTION phase.

1. The SCSI device that won the arbitration has both the BSY and SEL signals asserted and has

delayed at least a bus clear delay plus a bus settle delay before ending the ARBITRATION phase.

The SCSI device that won the arbitration becomes an initiator by not asserting the I/O signal.

2. The initiator shall set the DATA BUS to a value which is the OR of its SCSI ID but and the target's

SCSI ID bit, and it shall assert the ATN signal.

3. The initiator shall then wait at least two deskew delays and release the BSY signal.

4. The initiator shall then wait at least a bus settle delay before looking for a response from the target.

5. The target shall determine that it is selected when the SEL signal and its SCSI ID bit are true and

the BSY and I/O signals are false for a least a bus settle delay. The selected target may examine the

DATA BUS in order to determine the SCSI ID of the selecting initiator; The selected target shall

then assert the BSY signal within a selection abort time of its most recent detection of being

selected; this assertion is required for correct operation of the selection time-out procedure.

The target shall not respond to a selection if bad parity is detected. Also, if more than two SCSI ID

bits are on the DAT BUS, the target shall not respond to selection.

6. No less than two deskew delays after the initiator detects the BSY signal is true, it shall release the

SEL signal and may change the DATA BUS. The target shall wait until the SEL signal is false

before asserting the REQ signal to enter an information transfer phase.

SELECTION phase

Bus clear delay

+ bus settle delay

Deskew

delay x 2

Deskew

delay x 2

I/O

BSY

SEL

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4.3.4 INFORMATION TRANSFER phases

Note:

The COMMAND, DATA, STATUS, and MESSAGE phases are all grouped together as the information transfer phases

because they are a]l used to transfer data or control information via the DATA BUS The actual content of the

information is beyond the scope of this section.

The C/D, I/O, and MSG signals are used to distinguish between the different information transfer phases (see

Table 4.5). The target drives these three signals and therefore controls all changes from one phase to another.

The initiator can request a MESSAGE OUT phase by asserting the ATN signal, while the target can cause the

BUS FREE phase by releasing the MSG, C/D, I/O, and BSY signals.

Table 4-6 INFORMATION TRANSFER phase type

Phase

C/D

I/O MSG

DB7 to 9,P

Transfer

direction

DATA OUT

DATAIN

COMMAND

STATUS

Data

INIT Þ TARG

Command

Status

MESSAGE OUT

MESSAGEIN

Message

*: Reserved for future standardization

False

True

INIT: Initiator

TARG: Target

4-15

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INFORMATION

TRANSFER phase

INFORMATION TRANSFER phase

Min. Ons

Bus settle delay

BSY

SEL

C/D,

MSG, I/O

REQ

ACK

The INFORMATION TRANSFER phases use one or more REQ/ACK handshakes to control the information

transfer Each REQ/ACK handshake allows the transfer of one byte of information. During the

INFORMATION TRANSFER phases the BSY signal shall remain true and the SEL signal shall remain

false. Additionally, during the INFORMATION TRANSFER phases, the target shall continuously envelope

the REQ/ACK handshake(s) with the C/D, I/O and MSG signals in such a manner that these control signals

are valid for a bus settle delay before the assertion of the REQ signal of the first handshake. These control

signals remain valid until after the negation of the ACK signal at the end of the handshake of the last transfer

of the phase.

4.3.4.1 Asynchronous information transfer

The target shall control the direction of information transfer by means of the I/O signal. When the I/O

signal is true, information shall be transferred from the target to the initiator When the I/O signal is false,

information shall be transferred from the initiator to the target.

(a) Asynchronous transfer from target to initiator

If the I/O signal is true (transfer to the initiator), the target shall first drive the DB(7-O, P) signals to

their desired values, delay at least one deskew delay plus a cable skew delay then assert the REQ

signal. The DB (7-0, P) signals shall remain valid until the ACK signal is true at the target. The

initiator shall read the DB(7-0, P) signals after the REQ signal is true then indicate its acceptance of

the data by asserting the ACK signal. when the ACK signal becomes true at the target, the target

may change or release the DB(7-O P) signals and shall negate the REQ signal. After the REQ signal

is false, the initiator shall then negate the ACK signal.

After the ACK signal is false, the target may continue the transfer by driving the DB (7-0, P) signals

and asserting the REQ signal, as previously described.

4-16

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Bus settle delay

deskew delay +

cable skew delay

deskew delay +

cable skew delay

BSY

SEL

C/D,MSG

I/O

REQ

ACK

(b) Asynchronous transler from initiator to target

If the I/O signal is false (transfer to the target), the target shall request information by asserting the

REQ signal. The initiator shall drive the DB (7-0, P) signals to their desired values, delay at least

one deskew delay plus a cable skew delay then assert the ACK signal. The initiator shall continue

to drive the DB (7-0, P) signals until the REQ signal is false. When the ACK signal becomes true

at the target, the target shall read the DB (7-0, P) signals then negate the REQ signal. When the

REQ signal becomes false at the Initiator, the initiator may change or release the DB (7-0, P)

signals and shall negate the ACK signal. The target may continue the transfer by asserting the

REQ signal, as previously described.

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Bus settle

delay

deskew delay +

cable skew delay

deskew delay +

cable skew delay

BSY

SEL

C/D,MSG

I/O

REQ

ACK

4.4 Commands

Commands are directions issued from an initiator to a target. This image scanner supports the following

range of the commands specified by the SCSI standard.

(a) The identification number of logical unit (LUN: logical unit number) is B'000.’

If this scanner receives a value other than 000, it returns an error as follows:

Status key: B'0000l’(CHECK CONDITION)

Sense key: X'5’(ILLEGAL REQUEST)

(b) Relative addressing is not supported.

If this scanner receives a relative address (RelAdr) =1, it returns an error as follows:

Status key: B'OOOOl’(CHECK CONDITION)

Sense key: X'5’(WLEGAL REQUEST)

If this scanner receives a control byte ¹ X'00’, it returns an error as follows:

Status key: B'0000l ’(CHECK CONDITION)

Sense key: X'5’(ILLEGAL REQUEST)

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(d) A bit and field described as "Reserved" are 0.

If this scanner receives a value other than 0, it returns an error as follows:

Status key: B'00001 '(CHECK CONDITON)

Sense key: X~5'(ILLEGAL REQUES~I)

The commands supported by this scanner are listed below.

Table 4-7 Commands

Operation

Command

RESERVE UNIT

RELEASE UNIT

INQUIRY

code (hex)

Description

Declares the exclusive use of a logical unit

Cancels the declaration of the exclusive use of a logical unit

Examines the information regarding the target and logical unit

Requests a target for sense data

REQUEST SENSE

SEND DIAGNOSTIC

TEST UNIT READY

SET WINDOW

OBJECT POSITION

READ

Requests a target for self-check

Checks whether or not a logical unit is ready

Sets a window

Controls the automatic document feeder

Requests transfer of image data

SCAN

Requests the target to begin a scan operation

4.4.1 RESERVE UNIT command

The following table shows the normal sequence of the RESERVE UNIT command when used with this scanner.

Table 4-8 RESERVE UNIT command

Step

Bus phase

Initiator operation

Target operation

¬ ®

BUS FREE

ARBITRATION

SELECTION

Verifies bus free

Obtains bus-usage right

Selects target

Drives BSY signal

MESSAGE OUT

COMMAND

STATUS

Selects logical unit

Specifies RESERVE UNIT (CDB)

Reports GOOD status

Reports message

(Command complete)

MESSAGE IN

Releases ESY signal

BUS FREE

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4.4.1.1 RESERVE UNIT command: COMMAND phase (initiator Õ target)

Where a logical unit can be accessed by two or more initiators, there could be interferences with command

sequences, data, etc. This situation can be avoided by issuing the RESERVE UNIT command before

initiating series of operations.

Once a logical unit has properly accepted the RESERVE UNIT command, it will be occupied by the

initiator that issued the RESERVE UNIT command. If the 3rd party reservation option is supported, the

logical unit might be occupied by another SCSI unit - one having an initiator function - which is specified

TPID. In this condition called "reserved;' the logical unit cannot be accessed from any other initiators. The

reserved condition remains effective until one of the following events take place:

1. The reservation is replaced by a new RESERVE COMMAND from the same initiator that has

reserved the logical unit. (issuing another RESERVE UNIT command with the reservation still

effective does not result in an error. The previously established reservation is released as a result of

2,3, or 4 described below.)

2. The RELEASE UNIT command is issued from the same initiator that has reserved the logical unit.

3. The BUS DEVICE RESET message is sent from any initiator.

4. A hardware reset condition is detected.

The condition in effect after 3 or 4 is indicated by a sense key X'6' (UNIT ATTENTION), which is

returned in response to a subsequent command.

When a logical unit is already reserved by another initiator, if a command other than RELEASE

UNIT, INQUIRY, or REQUEST SENSE is issued, the target returns the following status:

Status: B'01100' (RESERVATION CONFLICT)

The initiator having reserved a logical unit can change the reservation by issuing the RESERVE

UNIT command to the same logical unit.

The command descriptor block (CDB) of this command is shown in the following illustration.

Byte 0

Operation code X'16'

Logical unit number

TPID

(Reserved)

Control byte

(a) TP (third party): Byte 1

If the 3rd party reservation option is not supported, setting this bit to 1 causes the target to return

the

following error:

· Status key: B'00001 '(CIIECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

This scanner does not support the 3rd party reservation option.

(b) TPID (third party device ID): Byte 1

This scanner ignores TPID.

4-20

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4.4.2 RELEASE UNIT command

The following table shows the normal sequence of the RESERVE UNIT command when used with this

scanner.

Table 4-9 RELEASE UNIT command

Step

Bus phase

BUS FREE

Initiator operation

Verifies bus free

Target operation

¬ ®

ARBITRATION

SELECTION

Obtains bus-usage right

Selects target

Drives BSY signal

MESSAGE

OUT

Selects local unit

COMMAND

Specifies RELEASE

UNIT (CDB)

STATUS

Reports GOOD status

MESSAGE IN

Reports message (Command Complete)

Releases BSY signal

BUSFREE

4.4.2.1 RELEASE UNIT command: COMMAND phase (initiator ® target)

The RELEASE UNIT command releases a reserved status. If this command comes from an initiator that has

not declared reservation, the target ignores the command and responds with the GOOD status (the reserved

status is not released).

The CDB of this command is shown in the following illustration.

Byte 0

Operation code X'17'

Logical unit number

TPID

(Reserved)

Control byte

(a) TP (third party): Byte 1

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If the 3rd party reservation option is not supported, setting this bit to 1 causes the target to return the

following error;

Status key: B'0000I'(CHECKCONDITION)

Sense key: X~5'(ILLEGAL REQUEST)

This scanner does not support the 3rd party reservation option.

(b) TPID (third party device ID): Byte 1 This scanner ignores TPID.

4.4.3 INQUIRY command

The following table shows the normal sequence of the INQUIRY command when used with this scanner.

Table 4-10 INQUIRY command

Step

Bus phase

Initiator operation

Target operation

¬ ®

BUS FREE

Verifies bus free

Obtains bus-usage right

Selects target

ARBITRATION ON

SELECTION

Drives BSY signal

MESSAGE OUT

COMMAND

DATA IN

Selects logical unit

Specifies INQUIRY (CBD)

Reports inquiry data

STATUS

Reports GOOD status

MESSAGE IN

Reports message (Command Complete

Releases BSY signal

BUS FREE

4.4.3.1 INQUIRY command: COMMAND phase (initiator ® target)

The INQUIRY command checks information regarding a target and logical unit.

The CDB of this command is shown in the following illustration.

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Byte 0

Operation code X'12'

(Reserved)

Logical unit number

EVPD

Page Code

(Reserved)

Allocation length

Control byte

(a) EVPD (enable vital product data): Byte 1

This scanner does not support EVPD. If this bit is set to 1, the scanner returns the following error:

Status key: B'OOOO1 '(CHECK CONDITION)

Sense key: X'5'(ILLEGAL REQUEST)

(b) Page code: Byte 2

This scanner does not support page code. If this bit is set to 1, the scanner returns the following error:

Status key: B'00001'(CHECK CONDITION)

Sense key: x'5'(ILLEGAL REQUEST)

(C)Allocation length: Byte 4

This field specifies the storage area in bytes that the initiator allocates for inquiry data. If a 0 is set here,

inquiry data is not transferred, but this is not regarded as an error. The target terminates the DATA IN

phase when it has transferred either the bytes of inquiry data specified in this field or all of effective

inquiry data.

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4.4.3.2 Inquiry data: DATA IN phase (target ® initiator)

Byte 0

Peripheral qualifier

Peripheral device type

Device type qualifier

ECMA version

Reserved

RMB

ISO version

AENC

ANSI approved version

Response data format

Additional length (n-4)

(Reserved)

Rel Adr Wbus32 Wbus16 SYNC

(MSB)

LINKED CACHE CMDQUE

SftRst

LSB

Vendor identification

(MSB)

ADF

Product identification

Product revision level

(Reserved)

Color mode

Color plane sequence

(a) Peripheral qualifier: Byte 0

Indicates the connection status of the devices under control of the target This scanner returns B' 000'.

(b) Peripheral device type: Byte 0

Indicates the type of the devices under control of the target. This scanner returns B'00110' (scanner).

This scanner does not support RMB. This scanner returns B'0'.

(d) Device type qualifier: Byte 1

This scanner does not support this field. This scanner always returns B'0000000'.

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(e) ISO version, ECMA version, ANSI approved version: Byte 2

Indicates the version number of the governing standard. This scanner returns X'02' (SCSI-2).

(f) Asynchronous event notification capability (AENC): Byte 3

This scanner does not support this field, so it returns B'0'.

(g) Response data format: Byte 3

Indicates the standard, and its version number, that governs the format of inquiry data. This scanner returns

B'0010' (SCSI-2).

(h) Additional length (n-4): Byte 4

Specifies the number of bytes, from byte 5 to the last byte. This value will not change with the allocation length

value specified in CDB. This scanner returns ~5B' (the 91 bytes from byte 5 to byte SF).

(i) RelAdr, Wbu~2, Wbusl6: Byte 7

This scanner does not support ReIAdrIwbus32(Wbusl6. This scanner returns B' 000'.

(j) SYNC (synchronous transfer): Byte 7

This scanner returns B'0' ("synchronous transfer not supported").

(k) Linked, cache, CMDQUE: Byte 7

This scanner does not support linked/cache/CMDQUE. This scanner returns B'000'.

(l) sftRst (Soft Reset): Byte 7

This scanner performs Hardware Reset. This scanner returns B'0'.

(m) Vendor identification: Bytes 8 to F

Indicates the vendor of the logical unit in ASCII code. The vendor name is left-justified, with the blank filled

with spaces (x'20'). This scanner returns "FCPA".

(n)Product identification: Bytes 10 to 1F

Indicates the product name in ASCII code. The name is left-justified, with the blank filled with spaces (X'20').

This

scanner returns one of the following names:

Scan Partner 10

(o) Product revision level: Bytes 20 to 23

Indicates the version number of the product in ASCII code. This number is left-justified, with the blank filled

with

spaces (X'20').

(p) ADF mode: Byte 24, bit 7

0: No built-in ADF module

1: With built-in ADF module

(q) Color mode: Byte 24, bit 6 to 4

000: B&W image only

001: 3-pass color scan mode

101: 1-pass color scan mode

(r) Color plane sequence: Byte 24, bit 3 to 0

0000: RGB

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4.4.4 REQUEST SENSE command

The following table shows the normal sequence of the REQUEST SENSE command when used with this scanner.

Table 4-11 REQUEST SENSE command

Step

Bus phase

Initiator operation

Verifies bus free

Target operation

¬ ®

BUS FREE

ARBITRATION

SELECTION

Obtains bus-usage right

Selects target

Drives BSY signal

MESSAGE OUT

COMMAND

Selects logical unit

Specifies REQUEST

SENSE (CDB)

DATA IN

Reports sense data

STATUS

Reports GOOD status

MESSAGE IN

Reports message

(Command Complete)

Releases BSY signal

BUS FREE

4.4.4.1 REQUEST SENSE command: COMMAND phase (initiator ® target)

The REQUEST SENSE command requests the sense data that shows the status of a logical unit. On receiving this

command, the target sets the unit's status in the sense data and returns it to the initiator.

The CDB of this command is shown in the following illustration.

Byte 0

Operation code X'03'

Logical unit number

(Reserved)

Allocation length

Control byte

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(a)

Allocation length: Byte 4

Specifies the storage area in bytes that tile initiator allocates for sense data If a 0 is set here, sense data is not

transferred, but this is not treated as an error. The target terminates tile DATA IN phase when it has

transferred either the bytes of sense data specified in this field or all of effective sense data.

4.4.4.2 Sense data: DATA EN phase (target ® initiator)

The target creates sense data if its status is B'00001 ' (CHECK CONDITION) or if a BUS FREE error has occurred.

This scanner creates sense data when any of tile errors described later is encountered.

The sense data on this scanner is shown in tile following illustration.

Byte 0

Valid

Error code

Segment number

EOM

ILI

(Reserved)

Sense key

(MSB)

Information bytes

(LSB)

LSB

Additional sense length

(MSB)

Command-specific information byte

Additional sense code

Additional sense code qualifier

Field replaceable unit code

SKSV

Sense-key specific bytes

(a)

Valid: Byte 0

Indicates whether or not the INFORMATION BYTES field is as specified by ANSI. This scanner

returns B'1' ("specified by ANSI").

(b)

(c)

Error code: Byte 0

Differentiates between current error or deferred error. This scanner returns X'70' ("CURRENT ERROR").

Segment number: Byte 1

This scanner does not support SEGMENT NUMBER. This scanner returns X'00'.

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(d) FM (file mark): Byte 2

This scanner does not support FM. This scanner returns B'0'.

(e) EOM (end of medium): Byte 2

Indicates the completion of window reading: 1 when completed, 0 when not completed.

(f) ILI (incorrect length indicator): Byte 2

Indicates that an error in logical block length has been detected.

(g) Sense key: Byte 2

Indicates the logical unit status using a sense key. This scanner supports the sense keys shown in the

following table:

Table 4-12

Sense key status of logical unit

NO SENSE

The logical unit has no information to be specifically described in a sense key.

This status occurs because either a command has succeeded, or because a

command has terminated in the CHECK CONDITION status since tile ILI bit has

been set to 1.

NOT READY

The specified logical unit cannot be accessed.

MEDIUM ERROR

A command has terminated because of a trouble with tile medium. Typical

causes of this error with this scanner are that tile ADF paper chute is empty,

paper is jammed in the ADF, or the ADF cover has been opened.

HARDWARE ERROR

An unrecoverable error was detected

ILLEGAL REQUEST

An illegal parameter exists either in a command (CDB), or in a group of

parameters sent in the DATA OUT phase following a command.

UNIT ATTENTION

The target has been reset.

ABORTED COMMAND

The target has aborted a command.

(h) Information bytes: Bytes 3 to 6

The information in this field is effective if ILI is 1. This scanner returns the remainder (2's complement

any negative value) so tile requested transfer amount subtracted by tile actual transfer amount

(i) Additional sense length: Byte 7

Specifies the number of sense bytes that follows. Even if all additional sense bytes cannot be transferred

because the allocation length in CDB is small, the value in this field is not adjusted to indicate the remaining

data. This scanner always assumes ~0A'.

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(j) Command-specific information bytes: Bytes 8 to B

On this scanner, this field is not supported and is fixed to X'00000000'.

(k) Additional sense code, additional sense code qualifier: Bytes C and D

A combination of these fields specifies detailed information about the error reported in the sense key. This

scanner reports the following information:

Table 4-13

Sense

key

Additional

sense code

Additional

sense code

qualifier

Description

No-sense

Not ready

Jam

ADF cover open

Document chute empty of paper

Abnormal internal target

SCSI parity error

Invalid command

Invalid field in CDB

Unsupported logical unit

Invalid field in parameter list

UNIT ATTENTION

Message error

(l) Sense-key specific bytes: Bytes F to 11

This field is reserved on this scanner.

(X'00000000' must not be expected.)

4.4.5 SEND DIAGNOSTIC command

The following table shows the normal sequence of the SEND DIAGNOSTIC command when used with this scanner.

Table 4-14 SEND DIAGNOSTIC command

Step

Bus phase

BUS FREE

ARBITRATION ON

Initiator operation

Verifies bus free

Target operation

¬ ®

Obtains bus-usage right

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Table 4.14 SEND DIAGNOSTIC command

Step

Bus phase

Initiator operation

¬ ®

Target operation

SELECTION

Selects target

Drives BSY signal

MESSAGE

OUT

COMMAND

Selects logical unit

Specifies SEND

DIAGNOSTIC

(CDB)

Performs self-test

STATUS

MESSAGE

Reports GOOD status

Reports message (Command Complete)

Releases BSY signal

BUSFREE

4.4.5.1 SEND DIAGNOSTIC command: COMMAND phase (initiator ® target)

The SEND DIAGNO~C command is used by an initiator to request a target or local unit for self-test. Two types of

self-diagnostic are: (a) the selftest performed by the unit itself, and (b) the test conducted according to the instruction

data from the initiator.

This scanner supports the self-test only.

The results of self-test are reported using the status and sense da~

The CDB of this command is shown in the following illustration.

Byte 0

Operation code X'1D'

Reserved

Logical unit number

(Reserved) SLFTST

(MSB)

Parameter list length

Control byte

(LSB)

(a) PF (page format): Byte 1

This scanner ignores PF.

(b) SLFTST (selftest): Byte 1

Specifies the self-test done by the unit itself. This value is 1 on this scanner.

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This scanner ignores DO and UO.

(d) Parameter list length: Bytes 3 to 4

This scanner does not support parameter list length.

4.4.5.2 Contents of self-test

The contents of self-test shall be an equivalent of NOP, provided that CHECK CONDITION is reported if err

information is withheld in the unit.

4.4.5.3 Results of self-test

This scanner reports the results of self-test as follows:

(a) Normal

The GOOD status is returned.

Status: B'00000' (GOOD)

Sense key: X'O' (NO SENSE).

(b) Abnormal

If error information is being withheld, the following status is returned:

Status: B'00001' (CHECK CONDITION)

Sense key: Error information being withheld

4.4.6 TEST UNIT READY command

The following table shows the normal sequence of the TEST UNIT READY command when used with this scanner.

Table 4-15

Step

Bus phase

BUSFREE

ARBITRATION

SELECTION

Initiator operation

Target

operation

¬ ®

Verifies bus free

Obtains bus-usage right

Select target

Drives BSY

signal

MESSAGE OUT

COMMAND

STATUS

Selects logical unit

Specifies TEST UNIT READY (CDB)

Reports GOOD

status

MESSAGE IN

Reports message

(Command

Complete)

Releases BSY

signal

BUS FREE

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4.4.6.1 TEST UNIT READY command: COMMAND phase (initiator ® target)

The TEST UNIT READY command checks whether a logical unit is ready. The command does not request. The

acknowledgment of this command reported using the status and sense data.

The CDB of this command is shown in the following illustration.

Byte 0

Operation code X'00'

Logical unit number

(Reserved)

Control byte

4.4.6.2 Acknowledgment

This scanner reports the acknowledgment of the TEST UNIT READY command as follows:

(a) When ready:

Status: B'00000' (GOOD)

Sense key: X'0' (NO SENSE)

(0) When not ready:

Status: B'0000l' (CHECK CONDITION)

Sense key: X'2' (NOT READY)

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4.4.7 SET WINDOW command

The following table shows the normal sequence of the SET WINDOW command when used with this

scanner.

Table 4-16 SET WINDOW command

¬ ®

Step

Bus phase

BUS FREE

ARBITRATION

SELECTION

Initiator operation

Verifies bus free

Obtains bus-usage right

Selects target

Target operation

Drives BSY signal

Sets window

(MESSAGE OUT)

COMMAND

DATA OUT

STATUS

Selects logical unit

Specifies SET WINDOW (CDB)

Specifies window data

Reports GOOD status

Reports message

MESSAGE IN

(Command Complete)

Release BSY signal

BUS FREE

4.4.7.1 SET WINDOW command: COMMAND phase (initiator ® target)

The SET WINDOW command is used to set a window.

The CDB of this command is shown in the following illustration.

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Byte 0

Operator code X'24'

Logical unit number

(Reserved)

(MSB)

Transfer length

Control byte

(LSB)

(a) TRANSFER LENGTH: Bytes 6 to 8

Specifies the number of window data bytes sent in the DATA OUT phase. A 0 means that no data

transferred; this situation is not considered an error.

If the number of bytes is not enough (less than 48) to set a single window, the scanner returns the

following error

Status: B'00001' (CHECK CONDITION) Sense key: X'5' (ILLEGAL REQUEST)

Sense key: X'5' (ILLEGAL REQUEST)

4.4.7.2 Window date: DATA OUT phase (initiator ® target)

Window data specifies the details of a window. Window data contains a bead and one or more window

descriptor block. Each window descriptor block specifies the attributes of a window (size, position, sca

etc.).

If a target receives the SET WINDOW command when it already has window data, ..the target discards a

current window data and validates the newly received data.

(a) Header

Window data (header) is shown in the following illustration.

Byte 0

Reserved

(MSB)

Window descriptor block length

(LSB)

Window descriptor block length: Bytes 6 and 7

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Specifies the length in bytes of a window descriptor block. Each block has the same length. The

allowable range of length is between 40 and 248 bytes. For a length outside this range, this scanner

returns the following error:

Status: B'00001' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(b) Window descriptor block

Window parameter data (window descriptor block) is shown in the following illustration.

Window identifier

(Reserved)

Byte 0

(MSB)

X resolution

(LSB)

Y resolution

Upper Left X

Upper Left Y

Width

(LSB)

(MSB)

Length

Brightness

Threshold

Contrast

Image composition

Bit per pixel

(MSB)

Halftone pattern

(LSB)

RIF

(MSB)

(Reserved)

Padding type

Bit ordering

Compression type

Compression argument

(Reserved)

Vendor unique parameter

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Specifies a unique value that identifies a window. The value may be 0 to 255. If two or more window

identifiers are specified for a single set of window data, the most recently specified identifier is

validated This scanner allows only one window to be set Therefore, only 0 may be specified in this

field. II other than 0 is specified, this scanner returns the following error:

Status: B~0000l' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(d) Auto: Byte 1

This scanner does not support auto. If a value other than 0 is specified, this scanner returns the foIl

error:

Status: B'0000l' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(e) X, Y resolution (XR, YR): Bytes 2 to 3 and 4 to 5

Specified here are the resolutions in the horizontal (X) and vertical (Y) scanning directions, in pixels

per

inch. If 0 is specified, the default value (300 dpi) is assumed. The acceptable resolution value is as

60, 75, 80, 100, 120, 150, 200, 240, 300, 600. If a value is specified that does not comply with these

conditions, this scanner returns the following error:

Status: B'0000l' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(f) Upper left X,Y(ULX, ULY): Bytes 6 to 9, A to D

Specified here are the X and Y coordinates of the upper-left comer of the window. The coordinates

expressed in units of 1/1200 inches relative to the upper-left comer of the maximum scan area. If the

ULX or ULY value is outside the maximum scan area of this scanner, this scanner returns the

following error:

Status: B'00001'(CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(g) Width, length (W, L): Bytes E to 11, 12 to 15

Specifies here are the width and length of the window, in units of 1/1200 inches. If the W or L value

outside the maximum scan area of this scanner; the following error is returned:

Status: B'0000l' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

The same error is also returned if this scanner is set to less than one raster line for vertical scanning

less than two bytes for horizontal scanning.

Notes:

ULX, ULY, W, L versus maximum scan area:

0< (ULX + W) ó 10200 (in 1/1200 inches)

0< (ULY + L) ó 13937 (in 1/1200 inches) for flatbed scan

0< (ULY + L) ó- 16800 (in 1/1200 inches) for ADF scan

Conditions for horizontal scanning:

9< {XR x W/1200] ó 5100

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(Values under 0 in [ ] are omitted.)

Conditions for vertical scanning:

1 ó [YR x L/1200] ò- 6968 (for flat-bed scan)

1 ó [YR x L/1200) ó 8400 (for ADF scan)

(Values under 0 in [ ] are omitted.)

(h) Brightness: Byte 16

Specifies the brightness for half-tone monochrome output. For multibit output, this scanner ignores

this field. On this scanner, brightness is variable to seven levels as shown in the following table.

Table 4-17

Value

Brightness

Remarks

Same as 80 to 9F range (with built-in dither)

00 to 1F

20 to 3F

40 to5F

60 to 7F

80 to 9F

A0 to BF

C0 to DF

E0 to W

Brighter

Digitized

Darker

(i) Threshold: Byte 17

Specifies the threshold value for use in digitizing multivalued image data. A 0 value causes auto

digitization. A value other than 0 indicates a relative brightness, where the darkest value is at X'FF',

the brightest value is at X'01', and the normal (ordinary) value is at X'80'.

This scanner is limited to 64 levels of brightness. Internally, this scanner excludes X'00' and ignores the lowest

two bits. (X'00' represents Dynamic Threshold; X'01' to X'03' are the darkest.

(j) Contrast: Byte 18

If a value other than X'00' is specified, this scanner returns the following error:

· Status: B'0000l' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

(k) IMAGE COMPOSITION: Byte 19

Specifies the type of image to be read. The following values are supported by this scanner:

X'00': Binary monochrome

X'0l': Dithered monochrome

X'02': Gray scale

X'03': bi-level RGB color

X'04': Dither RGB color

X'05': Multi-level RGB color

If a value X'03' or greater is specified, this scanner returns the following error:

Status: B'00001' (CHECK CONDITION)

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Sense key: X'5' (ILLEGAL REQUEST)

(I) Bit per pixel: Byte 1A

Specifies the number of bits per pixel. This value shall be X'Ol', X'04' and X'08' for this scanner. For

an:

value, this scanner returns the following error:

Status: B'00001' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(m) Halftone pattern: Bytes lB to 1C (lB reserved)

Specifies the dithered pattern used in binarizing multibit multivalued image data. This scanner

validates

this field only with the selection of dither/half-tone monochrome or mixed mode processing. For

other

selections, this field is ignored. The values are specified in the following format:

· Byte IB: Reserved

· Byte IC

Half-tone pattern number

this bit is reserved

This scanner has four types (X'00' to X'03') of built-in pattern. If a value greater than the four range

is specified, this scanner returns the following error:

· Status: B'00001' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

(n) RIF (reverse image format): Byte 1D, bit 7

This scanner does not support RIF. If a value other than X'O' is specified, this scanner returns the

following errors:

· Status: B'00001' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

(o) Padding type: Byte 1D, bits 0 to 2

This scanner does not support Padding type. If a value other than X'000' is specified, this scanner

returns

the following error:

· Status: B'0000l' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

(p) Bit ordering: Bytes 1E to 1F

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This scanner does not support BIT ORDERING. If a value other than X'0000' is specified, this scanner

returns the following error:

· Status: B'00001' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

(q) Compression type, argument: Bytes 20 to 21

This scanner does not support compression type nor compression argument If values other than X'0'

are

specified, this scanner returns the following error:

· Status: B'00001' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

4.4.7.3 Update of ScanPartner 600C OEM manual

ScanPartner 600C has now updated to accept paper size setting and color scanning setting. The setting

parameters are specified in vender Unique Parameters of Windows Descriptor Block.

The Vender unique parameters for color image scanning is different from that of B&W image scanning.

Please see table 4.19 and table 4.20. The command sequence of color image scanning is also different

from B&W image scanning. See 4.7.2.1 and 4.7.2.2 for details.

4.4.7.4 B&W Scanning Vender unique parameters

Table 4-18 Vender unique parameters (byte 28 and later)

Vender unique identification code

Reserved

Paper size

(MSB)

Paper width X

Paper length Y

(LSB)

Reserved

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4.4.7.4.1 Vendor unique identification code: Byte 28

Specified a vendor unique identification code. For B&W image scanning, X'00' must be specified. If other

value is specified, this scanner returns the following error:

Status: B'00001' (CHECK CONDITION)

Sense Key: X'05' (ILLEGAL REQUEST)

4.4.7.4.2 Paper size: byte 35

Specified a Paper Size. Set paper size used only in ADF mode.

Bit 7

Bit 6

: 0 Undefined

: 1 See Bit 6 to determine the paper size.

: 0 Standard document size (bits 3 to 0 effective)

: 1 Nonstandard document size (bytes 36 to 4D effective)

Bit 5

Bit 4

: Must be zero

Bit 3 to 0:

: Stand document size

0000 Undefined

0001 Undefined

0010 Undefined

0011 Undefined

0100 A4

0101 A5

0110 Undefined

0111 Letter

1000 Undefined

1001 Undefined

1010 Undefined

1011 Undefined

1100 Undefined

1101 B5

1110 Undefined

1111 Legal

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4.4.7.5 Color Scanning Vender unique parameters

Table 4-19 Vendor unique parameters (byte 28 and later)

Vender unique identification code

Parameter length

Color

ADF source

Reserved

Highlight value

Shadow value

Line width

Line count

Reserved

4.4.7.5.1 Vendor unique identification code: Byte 28

Specifies a vendor unique identification code. For color image scanning, X'FF' must be specified. If other

value is specified, this scanner returns the following error:

Status: B'00001' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

4.4.7.5.2 Parameter length: Byte 29

Specifies parameter length for color scan.

4.4.7.5.3 Color scanning parameters

a) ADF: Byte 2A, Bit 7

0: Flatbed scan mode

1: ADF scan mode

b) Source: Byte 2A, Bit 6

0: The initiator could read the line width and line count of the current scan page by using "READ"

command. When the bits is specified X'00', the data field of Line width (X'2D' to X'2E') and Line

count (X'2F') to X'30') will be ignored by the scanner.

1: The initiator can tell the scanner the line width and the line count for the current page. The

information

should be placed in Line width (X'2D' to X'2E') and Line count (X'2E' to X'30').

c) Color: Byte 2A, Bit 5 to 3

Specifies a color pass.

000: Green channel

001: Red channel

010: Green channel

011: Blue channel

100: R-G-B color image

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d) Highlight value: Byte 2B

Specifies the starting point for Hi-lighting. The value is in the range of X'01' to X'FF'.

e) Shadow value: Byte 2C

Specifies the starting point for shadowing. The value is in the range of X'00' to X'FE'.

f) Line width: Byte 2D to 2E

Specifies line width in bytes for the current scan page.

g) Line count: Byte 2F to 30

Specifies line count for current scan page.

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4.4.8 OBJECT POSITION command

The following table shows the normal sequence of the OBJECT POSITION command when used with this

scanner.

Table 4-20

Step

Bus phase

BUS FREE

Initiator operation

Verifies bus free

Target operation

¬ ®

ARBITRATION

Obtains bus-usage

right

SELECTION

Selects target

Drives BSY signal

MESSAGE OUT

COMMAND

STATUS

Selects logical unit

Loads/unloads paper (ADF)

Reports GOOD status

Reports message (Command Complete)

Release BSY signal

Specifies OBJECT POSITION (CDB)

MESSAGE IN

BUS FREE

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4.4.8.1 OBJECT POSITION command: COMMAND phase (initator ® target)

The OBJECT POSITION command controls the sheets in the ADF. When the ADF is used for reading

document sheets are loaded with this command before the READ command is issued.

The CDB of this command is shown in the following illustration.

Byte 0

Operator code X'31'

(Reserved)

Logical unit number

Position type

(MSB)

(Count)

(LSB)

(Reserved)

Control byte

(a) Position type: Byte 1

Specifies positioning functions

Bit 2

Bit 1

Bit 0

POSITION TYPE

Unload object

Load object

This scanner supports the unload object and load object functions only. If an other value is specified,

this scanner returns the following error.

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· Status: B'00001' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

(b) Unload object

This scanner unloads the documents from the ADF. If the ADF does not contain a document when this

command is received, this scanner does not generate an error but returns the GOOD status.

The unload object function is not vital to the scanner. After completion of reading with the READ

command, the scanner automatically unloads the documents.

This scanner loads the document from the ADF paper chute. If a document is already loaded in the

ADF when this command is received, this scanner does not generate an error but returns the GOOD

status.

(d) Count: Bytes 2 to 4

This scanner does not support this field. If a value other than 0 is specified, this scanner returns the

following error:

Status: B'00001' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

4.4.8.2 Acknowledgment

This scanner reports the acknowledgment of the OBJECT POSITION command as follows:

(a) Normal

The GOOD status is returned.

Status: B'00000' (GOOD)

Sense key: X'0' (NO SENSE)

(b) Abnormal

The CHECK CONDITION status is returned and sense data is created.

Status: B'00001' (CHECK CONDITION)

Send key: X'3' (MEDIUM ERROR)

(The cause of the error is jammed paper, an open ADF cover, or an empty paper supply.)

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4.4.8.3 ADF sequence

Read on ADF

Read on FB

OBJECT POSITION command

(Load object)

READ command

OBJECT POSITION command

(Unload object)

Note

If the document is shorter than the window area specified by the SET WINDOW command, the deficient portion is

supplemented by white data. The deficient portion is supplemented so that the data covers the entire specified window

area and is transferred.

4.4.9 READ command

The following table shows the normal sequence of the READ command when used with this scanner.

Table 4-21

Step

Bus phase

BUS FREE

ARBITRATION

SELECTION

Initiator operation

Verifies bus free

Obtains bus-usage right

Selects target

Target operation

¬ ®

Drives BSY signal

MESSAGE OUT

COMMAND

DATA IN

STATUS

MESSAGE IN

Selects logical unit

Specifies READ (CDB)

Reads document

Transfer image data

Reports GOOD status

Reports message (Command Complete)

Releases BSY signal

BUS FREE

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4.4.9.1 READ command: COMMAND phase (initiator ® target)

The READ command is used by an initiator to request a target for transfer of data. Upon receiving this

command, the target returns scan data to the initiator.

The CDB of this command is shown in the following illustration.

Byte 0

Operator code X'28'

(Reserved)

Logical unit number

RelAdr

Data type code

(Reserved)

(MSB)

Data type qualifier

(LSB)

Transfer length

Control byte

(a)Data type code: Byte 2

Specifies the type of data to be transferred between the initiator and target. This scanner supports

X'00'

(image data) only. If any other value is specified, this scanner returns the following error:

Status: B'0000l' (CHECK CONDITION)

Sense key: X'5' (ILLEGAL REQUEST)

(b) Data type qualifier: Bytes 4 to 5

Identifies each data of the same type. This scanner requires specifying byte 4= X'00' and byte 5 =

window

identifier. If the window identifier specified in byte 5 has not been declared by the DEFINE

WINDOW

PARAMETERS command, this scanner returns the following error:

· Status: B"0000l' (CHECK CONDITION)

· Sense key: X'5' (ILLEGAL REQUEST)

Specifies the bytes of storage area that the initiator has allocated for the data to be transferred. If TL

= 0, no data is transferred. This is not assumed an error.

The target does not transfer more data than that which is indicated by Th. This scanner requires that

the transfer length not exceed 64K.

If the actual transfer amount differs from the amount indicated by TL, the target creates the

following status and sense data:

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· Status: B'00001' (CHECK CONDITION)

· Sense key: X'0' (NO SENSE)

· Sense data (VALID): 1

· Sense data (ILI):1

Difference in transfer amount

· Sense data (INFORMATION): TL indicated transfer amount subtracted by actual transfer amount

Note:

For the read sequence, see items (2) and (3) in Section 4.7.

4.4.9.2 DATA IN phase (target ® initiator)

(a) Image data: (DATA TYPE CODE = x'00')

Horizontal scan direction

ULX

ULY

Raster line 1

Raster line 2

Raster line 3

Pixel 1

i+1

2i+1

Pixel 2

i+2

2i+2

i-1

2i-1

3i-1

Vertical

scan

direction

j pixels

Raster line j

i(j-1)+1

i(j-1)+2

ij-1

Pixel ij

i pixels

The following format is the data format that this scanner uses when transferring the image data of a

window comprising i x j pixels.

(b) For binary data

1 pixel

1 bit

8 pixels 1 byte

Raster line 1 Raster line 2

Byte 0

Raster line j

Byte n

Byte 0

Pixel 1 Pixel 2 Pixel 3 Pixel 4 Pixel 5

Pixel 6

Pixel 7

Pixel 8

Pixel

ij-7

Pixel

ij-6

Pixel

ij-5

Pixel

ij-4

Pixel

ij-3

Pixel

ij-2

Pixel

ij-1

Pixel

Byte n

If the data amount per raster line is not a multiple of 8 bits, the window is raised to a multiple of 8 bits.

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This scanner calculates the numbers of X-direction pixels and Y-direction pixels of the image data to be

transferred to the initiator. The scanner performs this calculation by referencing the resolution and area up with the

SET WINDOW command. This data need not be issued if the number of pixels are known 1 the initiator.

The transfer format for this data is shown in the following illustration.

Byte 0

(MSB)

Number of X-direction pixels

Number of Y-direction pixels

(Reserved)

(LSB)

4.4.10 Scan command

The following table shows the normal sequence of the SCAN command when used with this scanner.

Step Bus phase

Initiator operation

Verifies bus-free

Obtains bus-usage right

Selects target

Target operation

¬ ®

BUS FREE

ARBITRATION

SELECTION

Drives BSY signal

MESSAGE OUT

COMMAND

DATA OUT

STATUS

Selects logical unit

Specifies SCAN (CDB)

Transfer data

Reports GOOD status

Reports message (Command Complete)

Releases BSY signal

MESSAGE IN

BUS FREE

4.4.10.1 SCAN Command phase (initiator ® target)

The Scan Command requests the target begin a scan operation. It is required for scanning color image, but

not required for scan B/W image.

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Byte 0

Operator code X'1B'

(Reserved)

Transfer length

Control byte

Transfer length: X'01'

The transfer length specifies the length in byte of the window identifier list that should be sent in the

DATA OUT phase.

Window identifier: X'00'

4.5 Status: STATUS phase (target ® initiator)

Each time a command is terminated, the target moves into the STATUS phase and returns a status byte to the initiator to

report the completion of the command.

Status byte

(Reserved)

Status byte code

The status supported by this scanner are summarized in the following table.

Table 4-22

Code

Status of unit

000000

GOOD

The command has successfully terminated

000001

CHECK CONDITION

a) The command has abnormally terminated.

b) An abnormal condition was detected before a unit is selected.

The target detected an error before start of command-

controlled processing.

A unit that switched from the NOT READY status to the

READY status was selected for the first time.

A unit that received a RESE~ CONDITION or a BUS

DEVICE RESET message was selected for the first time.

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Table 4.22

Code

Status of unit

00100

BUSY

A target or logical unit cannot accept a new command.

The logical unit is executing processing.

The target is executing processing on a specified logical unit or other logical unit.

The target intends to report to an other initiator the sense data of a specified logical unit.

The target intends to report to an other initiator the sense data of a logical unit that was not specified.

The target intends to report the status to any initiator.

01100

RESERVATION CONFLICT

The specified unit is already reserved by another initiator.

When a target is released from the BUSY status, it will not issue a notification of the release. Therefore initiator needs to

check the status of units periodically and needs to issue the command again.

4.6 Messages

This section describes the detection of an ATN signal and explains the types of messages supported by this scanner.

4.6.1 ATN detection

The following table summarizes the timing at which this scanner detects and ATN signal.

Table 4-23

Phase

ATN detection timing

SELECTION

COMMAND

DATA OUT

DATA IN

Immediately before a phase change

Upon each reception of a message

Upon each transmission of a message

STATUS

MESSAGE OUT

MESSAGE IN

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4.6.2 Message types

Messages provide information consisting of one or more bytes that are transferred in the MESSAGE IN and

MESSAGE OUT phases. These messages are used to control the bus phase sequence.

The initiator creates an ATTENIION condition for the target, indicating that it has a message to be reported

to the target Only then the target switches to the MESSAGE OUT phase to receive the message.

If the target has completed the SELECTION phase, it can execute the MESSAGE IN phase at any time to

send the message to the initiator.

The messages that can be communicated with this scanner are listed on the following table.

Table 4-24

Code

Message

COMMAND COMPLETE

INIATIATOR DETECTED

ERROR

ABORT

MESSAGE REIECF

NO OPERATION

MESSAGE PARITY ERROR

BUS DEVICE RESET

8O TO FF IDENTIFY

4.6.2.1 COMMAND COMPLETE (X'00'): MESSAGE IN phase (target ® initiator)

This message indicates that a command has been terminated and a valid status has been reported to the

initiator.

The target always reports the COMMAND COMPLETE message after the STATUS phase at the

completion the input/output operation. (This requirement also applies if the COMMAND phase is not

executed because command cannot be received.)

Upon receiving the COMMAND COMPLETE message, the initiator knows that a command has

terminated.

After sending the COMMAND COMPLETE message, the target switches into the BUS FREE phase.

If the COMMAND COMPLETE message is rejected with the MESSAGE REJECT message, this scanner

switches into the BUS FREE phase.

4.6.2.2 INITIATOR DETECTED ERROR (X'05'): MESSAGE OUT phase (initiator ® target)

This message indicates that the initiator detected a retriable error and intends to request the target for retry.

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The initiator does not intend to issue another message by activating ATN before it deactivates the ACK INITIATOR

DETECTED ERROR message.

Table 4-25

ATN detection phase

Action

SELECTION

COMMAND

Moves to the BUS FREE phase

Discards the CDB already received and returns to the

COMMAND phase

DATA OUT

DATA IN

Discards the data already received and returns to the

DATA OUT phase

When transferring image data, the scanner moves to the

STATUS phase (Check Condition) ® MESSAGE IN

phase (Command Complete) ® BUS FREE phase and

keeps the sense key X'B' (Aborted Command)

When transferring inquiry data or sense data, returns to

the DATA IN phase and transfers data again

Returns to the STATUS phase and sends the status byte

again

STATUS

MESSAGE OUT

MESSAGE IN

Ignores this message

Returns to the MESSAGE IN phase and sends the

message byte again

4.6.2.3 ABORT (X'06'): MESSAGE OUT phase (initiator ® target)

The initiator requests the target to clear the input/output operation of the specified I/O unit (i.e., the input operation

ordered by the initiator that issued this message) and to move to the BUS FREE phase. Input/output operations

ordered by other initiators are not affected.

If a logical unit is not identified before the ABORT message, the target merely moves to the BUS FREE

If no operation to be cleared, an error does not occur.

The initiator does not intend to issue another message by activating ATN before it deactivates the ACK of ABORT

message.

This scanner does not have a function that clears input/output operation for certain initiators. This scanner must have

been reserved when it is operated in multi-initiator environment.

4.6.2.4 MESSAGE REJECT (X'07'): MESSAGE IN/OUT phase (initiator ® target)

This message indicates that a transferred message was rejected by the receiver as invalid or unexecutable.

The initiator does not intend to issue another message by activating AIN before it deactivates the ACK of MESSAGE

REJECT message.

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Upon receiving the MESSAGE REJECT message, this scanner takes action as shown in the following table

Table 4-26

Message rejected

Action

COMMAND COMPLETE

Moves to the BUS FREE phase. (It is not

assumed as an error.)

MESSAGE REJECT

No message issued

Responds the CHECK CONDITION status

Moves to the BUS FREE phase

4.6.2.5 NO OPERATION (X'08'): MESSAGE OUT phase (initiator ® target)

This message is issued in response to a message request from the target and indicates that the initiator does have a

valid message.

The initiator does not intend to issue another message by activating ATN before it deactivates the ACK of the

OPERATION message.

4.6.2.6 MESSAGE PARITY ERROR (X'09'): MESSAGE OUT phase (initiator ® target)

This message indicates that the initiator detected a parity error in the message received. The target resends that

message.

The initiator does not intend to issue another message by activating ATN before it deactivates the ACK of the

MESSAGE PARITY ERROR message.

Upon receiving the MESSAGE PARITY ERROR message, this scanner takes action as shown in the following table.

Table 4-27

Phase when ATN is detected

Action

MESSAGE IN

Moves to the MESSAGE IN phase and

resends the message (*1)

Other

Moves to the BUS FREE phase

* 1

This scanner retries three times with the message in the MESSAGE IN phase. If the third

retry fails, the scanner immediately moves to the BUS FREE phase.

4.6.2.7 BUS DEVICE RESET (X'0C'): MESSAGE OUT phase (initiator ® target)

This message addresses any initiators that are operating, or waiting for operation, on the target. The message

initializes those initiators by resetting their input/output operations.

The BUS DEVICE RESET message is transferred in the asynchronous mode.

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This scanner generates the UNIT ATTENTION condition to all initiators.

After being initialized, the initiators move to the BUS FREE phase.

The initiators do not intend to issue another message by activating ATN before they deactivate the ACK of

the BUS DEVICE RESET message.

4.6.2.8 IDENDIFY (X'80' TO X'FF'): MESSAGE OUT phase (initiator ® target)

This message specifies either a logical unit under control of the target, or a process incorporated in the

target (maintenance, self-diagnostic, etc.).

Specifies a logical unit number

(for bit 5 = 0)

Specifies a process incorporated in

the target (for bit 5 = 1)

(Reserved)

1. Processed by the target alone

0. Processed by the target and logical unit

1. The initiator does not permit disconnect

0. The initiator permits disconnect

Bit for distinguishing from other messages

This scanner does not support the target-incorporated process function. Therefore, if a 1 is set in bit 5, the

IDENTIFY message is rejected with the MESSAGE REJECT message.

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4.7 Command Sequence

This section describes the initial sequence and read sequence.

4.7.1 Initial sequence

Host side

Scanner side

Power ON/reset/initialize

Scanner does not respond for 3 sec

Verify the logical unit

INQUIRY

Prepare INQUIRY data

Respond with INQUIRY data

INQUIRY data

..........................................................................................................................................................................

Verify scanner READY

TEST UNIT READY

Status byte

Respond with GOOD status

if READY

Respond with CHECK

CONDITION status if

UNIT ATTENTION

Check status byte

Receive GOOD status

Receive CHECK CONDITION

status

REQUEST SENSE

Sense data

Prepare sense data

Request sense data

Receive UNIT ATTENTION

sense data

Respond with sense data

Clear sense data (Release

UNIT ATTENTION)

....................................................................................................................................................................................

Verify scanner READY

Check status byte

TEST UNIT READY

Status byte

Respond with GOOD status

if READY

Respond with CHECK

CONDITION status if

NOT READY

Receive GOOD status

Receive CHECK CONDITION

status

Prepare sense data

Request sense data

Receive sense data

NOT READY

REQUEST SENSE

Sense data

Respond with sense data

HARDWARE ERROR

........................................................................................................................................................................

End (Ready to read) End (Ready to read)

........................................................................................................................................................................

Abnormal termination

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4.7.2 Read sequence

The following illustration is an example of the command sequence used with this scanner. All commands

are assumed to be issued from a single initiator.

4.7.2.1 Read sequence for B&W mode

Initiator

Target

RESERVE UNIT

Move to reserved status

SET WINDOW

- Set window parameters

- Calculate the number of scan

lines covering all windows set

up, in terms of lines effective

after magnification change

OBJECT POSITION

Start scan/transfer

(Not required if ADF is not used)

READ command sequence

(See section 4.7.3 for the READ command sequence)

OBJECT POSITION

Unload document from ADF

(Not required if ADF is not used)

(Not required if ADF is used because document is unloaded automatically)

RELEASE UNIT

Release reserve state

4.7.3 READ command sequence

4.7.3.1 Single READ

READ command

Request image data (TL).

(one page)

Start scanning

Command completion

Send image data (TL).

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4.7.3.2 Multiple READ

READ command

Request image data (TL).

Start scanning.

Send image data

Image data:

(TL: when data

volume ò TL or

Data volume: when data volume < TL)

Next data request

GOOD status

Uncompleted

reading (one page)

CHECK CONDITION Completed

Status

See Notes 1 and 2

Notes:

1. If the requested transfer volume is more than the actual data volume, this scanner informs the initiator that

the requested transfer amount is abnormal. This is done as the scanner returns the status 00001 (CHECK

CONDITION) and creates the following sense data:

IL = 1

INFORMATION = requested transfer amount (TL).- actual data amount

This status is usually sent to the last READ command of the sequence. (For commands other than the last

READ, the GOOD status is reported.) If the data amount requested by the last READ command agrees

with the last data amount left, the GOOD status is reported to the READ command, and the CHECK

CONDITION status is reported to the next READ command.

2. Once all scan data has been transferred, the CHECK CONDITION status is always reported to the READ

command that follows. Before attempting another read, first issue the SET WINDOW command.

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4.8 Status Transition of Logical Unit

GOOD status

CHECK CONDITION status

Status transition

Power ON

Reset

BUS DEVICE RESET message

Other command

UNIT ATTENTION status

INQUIRY command REQUEST SENSE command

UNIT ATTENTION reported/cleared

Range protected in reserved status

NOT READY status

Time to READY

At room temperature

(25§C): £ 30 seconds

At low temperature

(5§C): £ 3 minutes

Other command

NOT READY status

REQUEST SENSE

COMMAND

(NOT READY reported)

Normal status

READY status: Waiting

Other command

READ command

Reading under way

Scan completed

C.A. status

- Hardware error

- Abnormal command

- Abnormal parameter

- Medium error

C.A status

REQUEST SENSE command

(Error detail reported/cleared)

Other command

(C.A. status released)

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4.9 Error Table

The following table lists errors that may occur upon issue of each command.

Table 4-28

Sense key

SENSE

NOT

READY

MEDIUM

ERROR

HARD-

WARE

ERROR

UNIT

AT-

TENTION

Content

ILLEGAL

REQUEST

ABORTED

COMMAND

(*1)

SET WINDOW

INQUIRY

OBJECT POSITION

READ

RELEASE UNIT

REQUEST SENSE

RESERVE UNIT

SEND DIAGNOSTIC

TEST UNIT READY

(*1)

(*2)

*1 Error in command descriptor

*2 Jam of document being unloaded from ADF at power ON or reset time.

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4.10 Items for Specifying Window

The following table lists the items available for specifying a window

Table 4-29

Image

composition

Item

Binary

monochrome

Dithered/ halftone

monochrome

Multibit

Window

X, Y resolution

Upper left X, Y

Width, length

Threshold

Bit per pixel

Halftone pattern

¡: Can be specified

´ : Cannot be specified

s: Ignored

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5. Diagnostics

5.1 Online Diagnostics

5.2 Offline Diagnostics

5.3 Diagnostic Flowcharts

The ScanPartner 600C has diagnostics to help you determine the cause of operational problems. Some of the

diagnostics function with the scanner online, while others are part of a separate offline diagnostic feature.

5.1 Online diagnostics

Determine operational problems by observing the control panel Ready and Paper Jam LEDs. With the scanner

online and operating normally, the Ready LED is on and the Paper Jam LED is off. Any other LED

combination indicates a problem, as shown in the following table.

Ready LED

Off

Paper Jam LED

Error indication

Group 3 error

Off

Blinking

Off

ADF cover open

Power on diagnostics

Run offline diagnostics

Table 5-1 Online diagnostics

If the ADF cover is open, close it. For the group errors, see the flowcharts later in this section. When both

lights are blinking, run the offline diagnostics as explained in the next section.

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5.2 Offline diagnostics

To run the offline diagnostics, turn the scanner off, set the SCSI ID switch (located on the back, next to the

SCSI connector) to 8, and turn the power back on. When you first turn the scanner back on, the READY light

will blink, indicating that the diagnostics are in progress. Observe the front panel LEDs closely. In a short

time, the LEDs indicate the results of the offline diagnostics as explained in the table below.

Ready LED

Paper Jam LED

Error indication

The two LEDs blink alternately.

RAM error

2 blinks

3 blinks

4 blinks

5 blinks

6 blinks

2 blinks

ROM error

3 blinks

4 blinks

5 blinks

6 blinks

DC offset adjust failure (too dark)

DC offset adjust failure (too bright)

Group 2 error

Group 1 error (inverter check error)

Table 5-2 Offline diagnostics results

For RAM or ROM errors, refer to Main Control PCBA Replacement in Chapter 4. For the Group 2 error, see

the flowchart in the following section.

To return the scanner to online operation, turn off the scanner, reset the SCSI ID to its pretest setting, and

turn the scanner back on.

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5.3 Diagnostic flowcharts

Use the flowcharts that follow to determine the exact problem when either the online or offline diagnostics

indicate a group error. Refer to Chapter 4 for parts replacement.

5.3.1 Group 1 error flowchart (Lamp assembly)

This flowchart applies when the Ready and the Paper Jam LED each blinks 6 times the same while, with the

scanner offline.

Group 1 Error

Yes

Lamp is on?

CCD error

Replace optical

assembly

Inverter error

Replace lamp

inverter circuit

Yes

Lamp is on?

End of test

Replace the lamp

5.3.2 Group 2 error flowchart (Flatbed/ADF motor)

This flowchart applies when the offline diagnostics error indication is the simultaneous blinking 5 times of

the Ready and Paper Jam LED.

Group 2 error

Flatbed

motor

moves?

Yes

ADF/Flatbed home

position sensor error

Flatbed motor error

Replace flatbed

motor

Replace home

position sensor

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5.3.3 Group 3 error flowchart (paper in ADF paper tray)

This flowchart applies when the Ready LED is off and Paper Jam LED steadily on with the

scanner online, and there is paper in the ADF paper tray.

Group 3 error

Remove the papers

from ADF’s input paper

tray, and wait 3 seconds

ADF

Yes

motor

moves?

ADF paper-in

sensor error

Wait 30

seconds

Replace ADF

PCBA

Paper

Jam LED

on?

Yes

ADF Motor

error

Paper

Jam

Replace ADF

unit

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5.3.4 Group 3 error flowchart (no paper in ADF paper tray)

This flowchart applies when the Ready LED is off and Paper Jam LED steadily on with the

scanner online, and there is no paper in the ADF paper tray.

Group 3 error

Put a piece of paper into

ADF’s input paper tray,

and wait 3 seconds

ADF paper-out

ADF motor

moves and

ejects paper?

Yes

sensor error

Replace ADF

PCA

Wait 30

seconds

Paper Jam

LED on?

ADF paper-in

sensor error

Replace ADF

PCBA

Yes

ADF motor error

Replace ADF

unit

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