For General Release
PROTOCOL MANUAL
MODEL
DEST.
..............
..........
VPL-PX20
WORLD
WORLD
WORLD
VPL-PX30
VPL-VW10HT
VERSION 1.0
Projector Firmware ARC32
VPL-PX20/PX30
LCD DATA PROJECTOR
VPL-VW10HT
LCD VIDEO PROJECTOR
LCD DATA/VIDEO PROJECTOR
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Table of Contents
1. Introduction .......................................................................1
2. Communication Specifications........................................2
<RS-232C Communication Signal>.......................................................................... 2
3. Command Block Format...................................................3
4. Data of Code ......................................................................4
5. Connection ........................................................................6
<RS-232C Connection> ............................................................................................ 6
6. Communication Procedure ..............................................7
6-1. Outline of Communication............................................................................. 7
6-2. Reading the Command Tables ....................................................................... 7
7. Communication Rules ......................................................8
8. Approximate Return Waiting Times ................................9
9. Commands....................................................................... 11
VPL-PX20/PX30
VPL-VW10HT
1
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1. Introduction
This protocol manual describes the basic configuration and basic operations of various commands used
for projector. Projector can be controlled using the commands in the List of Commands provided in
Section 9 “COMMANDS”. Using an external CONTROLLER , etc., inputs can be switched and the
power can also be turned on and off. In the following paragraphs, “CONTROLLER” means an external
device such as a PC which controls projector using these commands.
VPL-PX20/PX30
1
VPL-VW10HT
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2. Communication Specifications
<RS-232C Communication Signal>
. Full duplex communication channels (Flow control not performed.)
. Start-stop synchronism system
. Baud rate: 38.4 kbps (bits per second)
. The bit configuration is defined as follows.
1 START Bit + 8 DATA Bits + 1 PARITY Bit + 1 STOP Bit
START
BIT
D0
D1
D2
D3
D4
D5
D6
D7
PARITY STOP
(LSB)
(MSB) (EVEN) BIT
EVEN Parity.....Total number of “1”s from D0 to D7 is an even number.
VPL-PX20/PX30
VPL-VW10HT
2
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3. Command Block Format
The code from B0 to B (n) + 2 as described below are transmitted.
1
B0
Start Code
2
B1
B2
B7
B3
B4
B9
B5
Peripheral Index
Group Index
Device Index
Device Index
SENDER (To) Index
3
B8
B6
B10
Peripheral Index
Group Index
SENDER (From) Index
4
B12
B11
B13
Cmd1
Cmd2
Cmd3
COMMAND
5
6
7
B14
B15
B16
Data Length 2
(00 h)
Data Length 3
(00 _ 7 Fh)
Data Length 1
(B16 + 2)
(02 _ 81 h)
Total Data Length
B16
Check Data Length
Data Length
8
Bn
Bm
Bn = B16 + 1
Bm = B16 + Total Data Length
Data (n)
Data (n + 1, 2, 3, 4...)
Data
9
Bm + 1
Check SUM
0
Bm + 2
End Code
VPL-PX20/PX30
VPL-VW10HT
3
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4. Data of Code
1 Start Condition
DATE
(hex)
NOTE
Bn
B0
NAME
Start Code
A5
Indicates the first packet
2 INDEX Header
/*--
RECEIVER INDEX
--*/
B1
B2
B3
B4
B5
PERIPHERAL INDEX
01
00
01
00
01
01: Projector
GROUP INDEX UPPER BYTE
GROUP INDEX LOWER BYTE
DEVICE INDEX UPPER BYTE
DEVICE INDEX LOWER BYTE
Group Index = 0001 hex
Device Index = 0001 hex
/*--
SENDER INDEX
--*/
B6
B7
B8
B9
PERIPHERAL INDEX
03
00
01
00
01: Controller
GROUP INDEX UPPER BYTE
GROUP INDEX LOWER BYTE
DEVICE INDEX UPPER BYTE
Group Index = 0001 hex
Device Index = 0001 - 0063 hex
B10
DEVICE INDEX LOWER BYTE 01 - 63
/*--
Command
--*/
Refer to attached
Refer to attached
CMD1
CMD2
CMD3
B11
B12
B13
00
80
90
Projector All
LCD Projector All
VPL-PX20, VPL-PX30, VPL-VW10HT only
Note: CMD1 and CMD2 are assigned with different commands for each unit. Consequently,
there is no compatibility of commands between units. For details of the commands, refer
to the respective list of commands for the units. Since there is no index function of this
unit, the receiver INDEX will be ignored even if the command is designated.
3 Sub Data Size
B14
Data Length 1
02 81
(B16 + 2) hex Data Size
Note: Error when 82 to FF hex codes are included.
4 Data Size 2
B15
Data Length 2
00
0: Fixed
Note: Error when 01 to FF hex codes are included.
VPL-PX20/PX30
VPL-VW10HT
4
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5 Data Size 3
B16
Data Length 3
00 7F
Size of 6
Note: Error when 80 to FF hex codes are included.
6 Data
Bn - Bm Data
XX
No Data in some cases
Bn = B16 + 1
Bm = B16 + Total Data Length
7 Check SUM
Check sum of Data from 2 to 6
Bm + 1 Check Sum
XX
(Calculate the XOR of the Data from 2 to 6)
XOR is the exclusive OR.
It is as follows when calculated by 1 bit.
Taking A XOR B = C;
A
0
1
0
1
B
0
0
1
1
C
0
1
1
0
<Example of Calculation>
When 0XA5 (165) and 0XA5 (165) are calculated by XOR;
A5
A5
10100101
10100101
(165)
(165)
(0)
Answer 00000000
When 0XA5 (165) and 0X5A (90) are calculated by XOR;
Answer
A5
5A
10100101
01011010
(165)
(90)
Answer 11111111
(255)
8 End Condition
Bm + 2 END Code
5A
Indicates the last packet
VPL-PX20/PX30
VPL-VW10HT
5
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5. Connection
<RS-232C Connection>
Communication is enabled by the use of a D-Sub 9 Pin cross (reverse) cable.
The pin assignment of D-Sub 9 Pin and D-Sub 25 Pin is as follows.
D-Sub 9 Pin D-Sub 25 Pin
Name
Grounding for safety protection or cable shield
Transmission data
Shell = FG
1
2
FG
3
2
7
8
6
5
1
4
9
TxD
3
RxD Reception data
4
RTS Transmission request
CTS Transmission permission
DSR Data set ready
5
6
7
SG
GND for signal
8
DCD Data channel signal carrier detection
DTR Data terminal ready
20
22
RI
Calling display (Presence/absence of calling signal)
Pins indicated as D-Sub 25 Pin are not used.
Assured cable length: 15 m (However, assurance may not be applicable for some cables.)
The software for controlling the projector from a PC is intended for performing transmission and
reception for only the TxD and RxD lines.
Therefore there is no handshake normally performed by RS-232C.
VPL-PX20/PX30
VPL-VW10HT
6
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6. Communication Procedure
6-1. Outline of Communication
All communication between CONTROLLER (PC, etc.) and DEVICE (PROJECTOR) is performed by the
command block format. Communication is started by the issue of a command at CONTROLLER and
ended when the return data is sent to CONTROLLER after DEVICE receives the command.
CONTROLLER is prohibited from sending several commands at one time. This means that after
CONTROLLER sends one command, it cannot send other commands until DEVICE returns the return
data. DEVICE sends the return data after processing the command. The time from when CONTROLLER
sends the command until the return data is returned differs according to the contents of the command.
In some cases, CONTROLLER may receive data from DEVICE even though it has not sent a command.
(For example, during SYS setting, SIRCS command, and switcher information when switcher is selected.)
Note: When Sircs Direct Command (CMD1 = 17 hex) is sent, return data may not be returned in
some cases.
6-2. Reading the Command Tables
The command tables can be found in Section 9 (page 11).
CMD1 indicates the command category. The ACK from the projector is returned attached with the
command category sent from the controller. However, when errors of the communication line occur, 10
hex (COMMON) will be returned.
CMD2 indicates the command processing method and processing results. 00 hex (SET) is set when
setting data from the controller to the projector or when requesting for data processing. 01 hex (GET) is
set when acquiring data. 2 hex (RETURN) is set when returning the ACK of the command received from
the projector to the controller and when attaching data. 03 hex (ACK) is set when returning only the
processing results.
However, F0 hex (COMM NAK) is set when the command the projector receives from the controller has
a communication line error or checksum inconsistency.
The top of each category indicates the meaning of the data.
VPL-PX20/PX30
7
VPL-VW10HT
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7. Communication Rules
. When sending a command from CONTROLLER, the return data (CMD1 = 10 hex or CMD1 = each
category value, CMD2 = 03 hex) from PROJECTOR should be received first before sending the next
command. Even if the next command is sent before receiving the return data, since PROJECTOR will
not be able to receive that command, it does not return a response to CONTROLLER. Consequently, no
error code is also sent.
The following lists the approximate waiting times for PROJECTOR to return the return data after
CONTROLLER sends the command.
. When a communication error occurs, PROJECTOR ignores the data received until now, and set into the
reception standby state.
. For undefined commands or commends determined as invalid by PROJECTOR, PROJECTOR will
send the “NAK” return data to CONTROLLER .
. Take note that when data is written when the input signal of PROJECTOR is unstable, that data (value)
will not be incorporated.
. When INDEX specified SIRCS direct command (CMD1 = 17 hex) is transmitted, leave an interval of
45 mSec until the next transmission. (Do not return the return data (ACK, NAK) when the SIRCS
direct command is received.)
VPL-PX20/PX30
VPL-VW10HT
8
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8. Approximate Return Waiting Times
CMD1
00
CMD2
00
DATA1
_
_
00
DATA2
TIME (mSec)
_
_
01, 02
20
20
20
20
20
25
20
00
01
01
01
01
00
00
05
01
01
00
05
03
00
00
_
_
03
00
01
Note: The times shown in this table are when communication is performed in the condition that it
will not be interrupted by some reason.
VPL-PX20/PX30
9
VPL-VW10HT
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9. Commands
FUNCTION
CMD1
CMD2
DATA1
DATA2
DATA
PX20/30 VW10
DATA3
DATA4
DATA5
DATA6DATA7
DATA8
DATA9
Power Status
ACK
EACH
ACK 03h
ACK/NAK
CATEGORY
VALUE
00 ACK
01 NAK
00 DUMMY
O
O
O
O
01 UNDEFINED
COMMAND
04 SIZE ERROR
05 SELECT ERROR
06 RANGE OVER
0A NOT APPLICABLE
O
O
O
O
O
O
O
O
O
O
_
_
_
_
_
_
_
_
_
_
O
O
O
O
O
O
COMMON
10h
COMM NAK
F0h
COMM ERROR
10 CHECK SUM ERROR
20 FRAMING ERROR
30 PARITY ERROR
40 OVER RUN ERROR
50 OTHER COMM ERROR
O
O
O
O
O
O
O
O
O
O
ADJUST
CATEGORY
00h
SET 00h
GET 01h
ADJ USER NO
OPTION
DATA
ADJ USER NO
01 INPUT
00 FIXED
O
O
O
O
O
O
O
O
02 FIXED
00 FIXED
00 VIDEO
01 S VIDEO
02 INPUT A
03 INPUT B
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
10 CONTRAST
11 BRIGHTNESS
12 COLOR
O
O
O
O
O
O
O
O
O
O
O
O
O
02 FIXED
02 FIXED
02 FIXED
02 FIXED
02 FIXED
02 FIXED
02 FIXED
02 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
O
O
O
O
O
O
O
O
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
_
O
O
O
O
O
O
O
_
13 HUE
14 SHARPNESS
15 RGB ENHANCER
16 VOLUME
17 COL TEMP
O
O
00 HIGH
01 LOW
00 HIGH
01 LOW
02 CUSTOM1
03 CUSTOM2
04 CUSTOM3
05 CUSTOM4
O
O
O
O
O
O
00 FIXED
20 ASPECT
O
O
02 FIXED
00 FIXED
00 16:9
01 4:3
00 FULL
01 FULL THROUGH
02 NORMAL
03 NORMAL THROUGH
04 ZOOM
05 SUB TITLE
06 WIDE ZOOM
O
_
_
_
_
_
_
_
_
O
O
O
O
O
O
O
00 FIXED
00 FIXED
00 FIXED
21 SCAN CONV
O
O
O
O
02 FIXED
02 FIXED
02 FIXED
00 FIXED
00 FIXED
00 FIXED
00 OFF
01 ON
O
O
O
_
_
_
_
_
_
_
_
_
_
_
_
_
O
O
_
O
O
_
O
O
_
30 PICTURE MUTING
31 AUDIO MUTING
O
O
O
O
00 OFF
01 ON
O
O
O
O
00 OFF
01 ON
VPL-PX20/PX30
VPL-VW10HT
11
11
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FUNCTION
CMD1
CMD2
DATA1
00 FIXED
DATA2
32 INPUT-A
PX20/30 VW10
DATA3
02 FIXED
DATA4
00 FIXED
DATA5
DATA6DATA7
DATA8
DATA9
Power Status
O
O
O
O
O
O
O
O
00 COMPUTER
01 COMPONENT
02 DTV-YPBPR
03 DTV-GBR
00 FIXED
33 INPUT-B
O
O
O
O
02 FIXED
00 FIXED
00 COMPUTER
01 COMPONENT
02 DTV-YPBPR
03 DTV-GBR
O
_
_
_
_
_
_
_
_
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
80 GAIN RED
81 GAIN GREEN
82 GAIN BLUE
83 BIAS RED
O
O
O
O
O
O
O
O
O
O
O
O
02 FIXED
02 FIXED
02 FIXED
02 FIXED
02 FIXED
02 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00~FF 0~255
00~FF 0~255
00~FF 0~255
00~FF 0~255
00~FF 0~255
00~FF 0~255
O
O
O
O
O
O
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
84 BIAS GREEN
85 BIAS BLUE
REPLY 02h
ADJ USER NO
VALID
LOWER
UPPER
DATA
00 FIXED
01 INPUT
O
O
O
O
O
O
O
O
00 FIXED
00 00
00 03
00 FIXED
00 VIDEO
01 S VIDEO
02 INPUT A
03 INPUT B
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
10 CONTRAST
11 BRIGHTNESS
12 COLOR
O
O
O
O
O
O
O
O
O
O
O
O
O
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 00
00 00
00 00
00 00
00 00
00 00
00 00
00 00
00 64
00 64
00 64
00 64
00 64
00 64
00 64
00 01
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
00~64 0~100
O
O
O
O
O
O
O
O
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
_
O
O
O
O
O
O
O
_
13 HUE
14 SHARPNESS
15 RGB ENHANCER
16 VOLUME
17 COL TEMP
O
O
00 HIGH
01 LOW
O
O
O
O
O
O
00 FIXED
00 00
00 05
00 FIXED
00 HIGH
01 LOW
02 CUSTOM1
03 CUSTOM2
04 CUSTOM3
05 CUSTOM4
00 FIXED
20 ASPECT
O
O
00 FIXED
00 FIXED
00 00
00 00
00 01
00 06
00 FIXED
00 FIXED
00 16:9
01 4:3
O
_
_
_
_
_
_
_
_
O
O
O
O
O
O
O
00 FULL
01 FULL THROUGH
02 NORMAL
03 NORMAL THROUGH
04 ZOOM
05 SUB TITLE
06 WIDE ZOOM
00 FIXED
00 FIXED
00 FIXED
00 FIXED
21 SCAN CONV
30 PICTURE MUTING
31 AUDIO MUTING
32 INPUT-A
O
O
O
O
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 00
00 00
00 00
00 00
00 01
00 01
00 01
00 03
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 OFF
01 ON
O
O
O
_
_
_
_
_
_
_
_
_
_
_
_
_
O
O
_
O
O
_
O
O
_
O
O
O
O
O
O
00 OFF
01 ON
O
O
00 OFF
01 ON
O
O
O
O
O
O
O
O
00 COMPUTER
01 COMPONENT
02 DTV-YPBPR
03 DTV-GBR
VPL-PX20/PX30
VPL-VW10HT
12
12
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FUNCTION
CMD1
CMD2
DATA1
00 FIXED
DATA2
33 INPUT-B
PX20/30 VW10
DATA3
00 FIXED
DATA4
DATA5
DATA6DATA7
DATA8
DATA9
Power Status
O
O
O
O
00 00
00 03
00 FIXED
00 COMPUTER
01 COMPONENT
02 DTV-YPBPR
03 DTV-GBR
O
_
_
_
_
_
_
_
_
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
80 GAIN RED
81 GAIN GREEN
82 GAIN BLUE
83 BIAS RED
O
O
O
O
O
O
O
O
O
O
O
O
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 00
00 00
00 00
00 00
00 00
00 00
00 FF
00 FF
00 FF
00 FF
00 FF
00 FF
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00 FIXED
00~FF 0~255
00~FF 0~255
00~FF 0~255
00~FF 0~255
00~FF 0~255
00~FF 0~255
O
O
O
O
O
O
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
84 BIAS GREEN
85 BIAS BLUE
SYSTEM
STATUS
01h
GET 01h
DU USER NO
DU USER NO
01 ERROR STATUS
DATA SIZE
DATA SIZE
01 FIXED
REPLY 02h
DATA 0
CATEGORY
00 FIXED
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
00 NO ERROR
01 LAMP ERROR
02 FAN ERROR
04 COVER ERROR
08 TEMP ERROR
10 D5V ERROR
20 POWER ERROR
40 WARNING TEMP
00 FIXED
02 POWER STATUS
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
01 FIXED
00 STANBY
01 MAIN ON EXE
02 D5V CHECK
03 D5V ON EXE
04 FAN ON EXE
05 LAMP ON EXE
06 LAMP ON CHECK
07 LAMP NG WAIT
08 ON EXE
09 ON
0A LAMP OFF EXE
0B COOLING1
0C COOLING2
0D FAN OFF EXE
0E OFF EXE
0F SAVING LAMPOFF EXE
10 SAVING1
11 SAVING2
12 SABING STANBY
SET 00h
DU USER NO
DATA SIZE
DATA 0
DATA 0
GET 01h
REPLY 02h
DU USER NO
DU USER NO
DATA SIZE
DATA SIZE
00 FIXED
05 CONTROL MODE
SELECT
O
O
O
O
01 FIXED
00 USER
01 SERVICE
SIRCS CODE
DIRECT
17HEX
00HEX
CATEGORY
SIRCS CODE
REPEAT
REPEAT NUMBER
REPEAT NUMBER
Same Same
process process
as the as the
usual usual
Same Same Same Same
process process process process
as the as the as the as the
usual usual usual usual
PS
state
cleared
85 5A 20BIT PJ SIRCS CODE (2BYTES)
40 54 15BIT PJ SIRCS CODE (2BYTES)
O
O
O
O
00~7F SEE ATTACHED 00 ONE SHOT
01 REPEAT
O
_
(2BYTES)
Sircs
Sircs
Sircs
Sircs
Sircs
Sircs
VPL-PX20/PX30
VPL-VW10HT
13
13
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FUNCTION
CMD1
CMD2
DATA1
RESET
DATA2
PX20/30 VW10
DATA3
DATA4
DATA5
DATA6DATA7
DATA8
DATA9
Power Status
MEMORY
03h
SET 00h
MEMORY NO
CATEGORY
00 RESET
01 Channel Memory
02 Status Memory
03 Set Memory
O
O
O
O
O
O
SAVE
01 SAVE
MEMORY NO
04 W/B ALL
05 W/B LOW
06 W/B HIGH
07 W/B CUSTOM1
08 W/B CUSTOM2
09 W/B CUSTOM3
0A W/B CUSTOM4
O
O
O
O
O
O
O
O
O
O
VPL-PX20/PX30
VPL-VW10HT
14
14
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SIRCS CODE
15Bit Category
x0
x1
x2
x3
x4
x5
x6
x7
x8
x9
xA
xB
xC
xD
xE
xF
0x
1x
VOLUME
VOLUME
_
DOWN
AUDIO
MUTING
POWER
ON/OFF
CONTRAST
CONTRAST
COLOR
+
HIGH
COLOR
_
LOW
BRITNESS
+
BRIGHT
BRITNESS
_
DARK
+
UP
+
HIGH
_
LOW
2x
HUE
+
PURPLISH
HUE
_
GREENISH
SHARPNESS
+
SHARPNESS
PICTURE
MUTING
STATUS
ON
STATUS
OFF
MENU
VIDEO
INPUT A
INPUT B
POWER
ON
POWER
OFF
_
SOFT
SHARP
3x
4x
5x
CURSOR
CURSOR
CURSOR
CURSOR
→
←
↑
↓
ADJ
R
ADJ
G
ADJ
B
RGB SIZE
RGB SHIFT
BLANKING
W/B
GAIN
W/B
BIAS
INPUT
SELECT
ENTER
MEMORY
PATTERN
S VIDEO
6x
7x
RESET
20Bit Category
x0
x1
x2
x3
x4
x5
x6
x7
x8
x9
xA
xB
xC
xD
xE
xF
0x
1x
2x
3x
4x
5x
VIDEO
MEMORY
OFF
VIDEO
MEMORY 1
VIDEO
MEMORY 2
VIDEO
MEMORY 3
VIDEO
MEMORY 4
VIDEO
MEMORY 5
VIDEO
MEMORY 6
VIDEO
MEMORY
TOGGLE
6x
7x
APA
DOT
PHASE
HELP
FUNCTION 1
FUNCTION 2
DIGITAL
ZOOM +
DIGITAL
ZOOM _
Bold: PX20/PX30 only
Italic: VW10HT only
PX20/PX30/VW10HT Communication Basic Structure
NO
COMMAND NAME
RS232C
CMD1
CMD2
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
DATA9
~
Data n
1
ADJUST CATEGORY
SET
GET
00h
00h
01h
02h
03h
00h
01h
02h
03h
00h
00h
03h
ADJ USER NO
OPTION
DATA
ADJ USER NO
ADJ USER NO
REPLY
ACK
STATUS
LOWER
UPPER
DATA
ACK/NAK
DATA
2
SYSTEM STATUS CATEGORY
SET
01h
DU USER NO
DU USER NO
DU USER NO
DATA SIZE
DATA SIZE
DATA SIZE
DATA [0]
DATA [0]
REPEAT
DATA [1]
DATA [1]
~
~
~
~
~
~
~
~
~
~
DATA [n-1]
DATA [n-1]
GET
REPLY
ACK
ACK/NAK
DATA
3
4
SIRCS
SET
17h
03h
CATEGORY
SIRCS CODE
REPEAT NUMBER
MEMORY CATEGORY
REQUEST
ACK
SAVE/RESET
ACK/NAK
MEMORY NO
DATA
VPL-PX20/PX30
VPL-VW10HT
15
15
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