APPENDIX B
PATTON ELECTRONICS MODEL 593 SERIES
EIA-530 PIN CONFIGURATIONS
DIRECTION
“DCE” SETTING
DIRECTION
USER
MANUAL
MODELS 593/25, 593/45
and 593/TB
RS-422/RS-485
7- Signal Ground
To Model 593 Series Receive Data-B (RD)-16
From Model 593 Series Transmit Data-B (RD)-14
Optical Isolators
3-(RD) Receive Data-A From Model 593 Series
2-(TD) Transmit Data-A To Model 593 Series
Part# 07M593
Doc# 055041U Rev. A
Revised 07/05/00
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
Copyright © 1999
Patton Electronics Company
All Rights Reserved
An ISO-9001
Certified
Company
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2.0 GENERAL INFORMATION
1.3 SERVICE
All warranty and nonwarranty repairs must be returned freight pre-
paid and insured to Patton Electronics. All returns must have a Return
Materials Authorization number on the outside of the shipping contain-
er. This number may be obtained from Patton Electronics Technical
Support at:
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warrant-
ed for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to con-
tact Patton Electronics Technical Services at (301) 975-1007.
2.1 FEATURES
telephone: (301) 975-1007
email: [email protected]
web address: http://www.patton.com
• Asynchronous Operation
• Half or Full Duplex over 2 or 4 wire lines
• Maximum cable length 4000 ft.
• Supports Data rates to 115.2 kbps
• 2500 Vrms isolation
NOTE: Packages received without an RMA number will not be
accepted.
Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Patton Model 593/25, 593/45, and 593/TB. Technical Support hours:
8AM to 5PM EST, Monday through Friday.
2.2 DESCRIPTION
The Patton Models 593/25F, 593/45 and 593/TB are asynchro-
nous RS-422/RS-485 optical isolators, which guard your asynchronous
data equipment from the hazards of ground looping. All Models have
selectable Dip switch settings for RS-422/RS-485 applications. The
Model 593 series provides 2500Vrms of isolation and supports data
rates up to 115.2 kbps. Models 593/25F/45/TB are powered by an
external +5V regulated power supply.
The Models 593/25F, 593/45, and 593/TB isolates transmit data
(XMT+ and XMT-) and receive data (RCV+ and RCV-). The model
593/45 has a RJ-45 on both sides, the model 593/TB has a terminal
block on both sides and the model 593/25F has DB-25 female connec-
tors on both sides.
Warning: This product will not provide complete protection should your
equipment or building be subject to a direct lightening hit.
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3.0 CONFIGURATION
The Models 593/25F, 593/45, and 593/TB feature configuration via hard-
ware switches and headers. This section describes all possible hardware config-
urations, including the factory default settings. Table 1 below summarizes config-
uration of switches and headers for the Model l 593/25F, 593/45, and 593/TB.
Figure 2. Close up of DIP switches showing ON/OFF positions.
The switch is shown in the Off position.
Typical Application Settings
3.1.1 Configuration DIP Switches Sets S2 and S3
Switch
Mode
422 4W
485 2W
485 4W
Position
Function
ON/OFF
Full Duplex Half Duplex Half Duplex
The two eight-position Dip switches are used to configure the units for
common asynchronous data rates, full or half duplex over 2-wire/4-wire twisted
pair. The following sections describe all the possible configurations.
S2-1
S2-2
S3-1
S3-2
S1-1,2
S1-3
S1-4
S4-1, 2
S4-3
S4-4
TX Mode HD/FD
Operation 422/485
TX Mode HD/FD
Operation 422/485
Interface 2W/4W
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
ON
X
ON
OFF
ON
OFF
OFF
ON
X
NOTE: When selecting any hardware configurations
below, Switch S2 and Switch S3 must be set the same.
OFF
RX IMP.
120 Ω/HI ON
Not Used ( )
Interface 2W/4W
Ω
X
3.1.2 Full/Half Duplex S2-1 and S3-1
OFF
ON
ON
X
OFF
ON
X
Switches S2-1 and S3-1 determine full duplex or half duplex trans-
mission mode.
RX IMP.
120 /HI ON
Not Used ( )
X
Table 1. Configuration summary of swithes and headers
Half Duplex
ON
ON
Full Duplex
OFF
OFF
S2-1
S3-1
3.1 DIP SWITCH S2 & S3
The Models 593/25F, 593/45, and 593/TB feature two eight-position Dip
switches (S2 and S3). These switches are accessed by opening the plastic
3.1.3 422/485 Operation S2-2 and S3-2
case by inserting a small flat blade screwdriver in the slot on either side of the
case and twisting gently. Figure 1A, below shows Models 593/TB & 593/45
bottom view of the printed circuit board and the location of the dip switches.
Figure 1B shows Model 593/45 bottom view of the printed circuit board and the
location of the DIP switches
The Models 593/25F, 593/45, and 593/TB switches (S2-1 thru S2-8 &
S3-1 thru S3-8) can be configured as either “On” or “Off”. Figure 2 shows the
orientation of the DIP switches with respect to ON/OFF positions.
Switches S2-2 and S3-2 determine RS-422 or RS-485 interface
operation.
RS-422
ON
RS-485
OFF
S2-2
S3-2
ON
OFF
S2
OFF
S3
OFF
OFF
ON
OFF
ON
ON
ON
S2
S3
Figure 1A. Models 593/TB & 593/45, location
Figure 1B. Model 593/25, location of S2 &
of S2 & S3 on Printed Circuit Board
S3 on Printed Circuit Board
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3.2 DIP Switch S1 & S4
3.3 Data Rates DIP Switch Setting S2 and S3
The Models 593/25F, 593/45, and 593/TB features 2 four-position DIP
switches S1 and S4. Figure 3A (below) shows Models 593/TB & 593/45 top
view of the printed circuit board and where S1 and S4 are located. Figure 3B
shows Model 593/25 top view of the printed circuit board and the position of S1
and S4. Following figure 3A/3B is a detailed description on the different switch
settings and their functions.
The table below shows the data rates DIP switch settings for S2 and S3.
Switches S2 and S3 must be set identically to operate properly.
Model 593 Series Data Rate Table
Switch Positions
Data Rates
S4
S1
S2 Position S3 Position 4800 bps 9600 kbps 19.2 kbps
S2-3
S2-4
S2-5
S2-6
S2-7
S2-8
S3-3
S3-4
S3-5
S3-6
S3-7
S3-8
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF`
OFF
ON
Figure 3A. Models 593/TB & 593/45 Location of JP7 Pins 1-4 & JP8 Pins 1-4
Model 593 Series Data Rate Table (continued)
Switch Positions
S1
Data Rates
S2 Position S3 Position 38.4 kbps 57.6 kbps 115.2 kbps
S2-3
S2-4
S2-5
S2-6
S2-7
S2-8
S3-3
S3-4
S3-5
S3-6
S3-7
S3-8
OFF
OFF
ON
OFF
ON
ON
S4
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF`
OFF
OFF
OFF
OFF
Figure 3B. Model 593/25, Location of JP7 Pins 1-4 & JP8 Pins 1-4
3.2.1 2W/4W Interface S1-1, 2 and S4-1, 2
Switches S1-1, 2 and S4-1, 2 set up the interface for 2 wire or 4 wire
operation.
2 Wire 4 Wire
S1-1, 2 ON
S4-1, 2 ON
OFF
OFF
3.2.2 Receive Impedance S1-3 and S4-3
Switches S1-3 and S4-3 set the receive impedance for 120 Ohms or
high impedance.
120 Ohm High Impedance
S1-3
S4-3
ON
ON
OFF
OFF
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4.0 INSTALLATION
4.1.1 4-Wire Connection Using RJ-45
Once you have properly set the configuration switches and
jumpers, you are ready to connect Models 593/25F, 593/45, or 593/TB
to your system. This section tells you how to connect the interfaces
and how to operate your Model 593/25F, 593/45, or 593/TB.
The RJ-45 connectors on the Model 593/45 are pre-wired for a
standard TELCO wiring enviroment. The signal/pin relationships are
shown below.
4.1 CONNECTING TO THE RS-422 OR RS-485 INTERFACE
RJ-45
SIGNAL
To function properly, the Models 593/25F, 593/45, and 593/TB
must have one or two pair of twisted pairs of metallic wire. These pairs
must be “dry” (unconditioned) metallic wire between 19 and 26 AWG.
1 ......................................N/C
2 ......................................GND*
3 ......................................RCV-
4 ......................................XMT+
5 ......................................XMT-
6 ......................................RCV+
7 ......................................GND*
8 ......................................N/C
The 593 Series has three physical interfaces as listed below.
Following the list is figure 4, which shows the location of the physical
interfaces.
1. Model 593/45: RJ-45 jacks on both sides
2. Model 593/TB: Terminal blocks with strain relief on both sides
3. Model 593/25F: DB-25 female connectors on both sides.
*Connection to ground is optional
1
2
3
4
5
6
7
8
In most modular RS-422/RS-485 applications it is necessary to
use a "cross over" cable. The diagram below shows how a cross over
cable should be constructed for an environment where the Model
593/45 and the RS-422/RS-485 device uses a 8-wire RJ-45 connector.
Similar logic should be followed when using RJ-45 connectors or a
combintion of the two.
MODEL 593/45
SIGNAL PIN#
RS-422/485 DEVICE
RS-422/485 SIGNAL
PIN#
NC
1 -------------------N/C
2 -------------------N/C
3 -------------------5
4 -------------------6
5 -------------------3
6 -------------------4
7 -------------------N/C
8 -------------------N/C
GND
RCV-
XMT+
XMT-
RCV+
GND†
N/C
XMT-
RCV+
RCV-
XMT+
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4.1.2 2-Wire Connection Using RJ-45
Most RS-485 devices employ a two-wire, half duplex configuration.
When using this configuration, be sure to first set the Model 593/45 to
half duplex mode by switching DIP switches and jumpers (refer to sec-
tion 3.0 for this configuration)—then use only the transmit (XMT) pair
as shown below
593/45 SIGNAL
RS-485 SIGNAL
XMT+....................................+
XMT-.....................................-
Figure 5. Model 593/TB, showing Terminal Block & Cable Routing
4.1.3 4-Wire Connection Using Terminal Blocks
If you purchased the Model 593/TB, you will need to open the
case to access the terminal blocks. The following instructions will tell
you how to open the case, connect the bare wires to the terminal
blocks, and fasten the strain relief collar in place so that the wires
won't pull loose.
5. If you are using 4-wire mode, connect the other pair of wires to
RCV+ and RCV- (receive positive and negative) on both of the
terminal blocks, again making careful note of which color is
positive, and which is negative.
Ultimately, you will want to construct a four pair cross over cable
that makes a connection with the RS-422/485 device, as shown below.
1. If the case is not already open, open it now by twisting it open
with a small plastic screwdriver.
Model 593/TB
RS-422/-485 Device
SIGNAL
2. Strip the outer insulation from the twisted pairs about one inch
from the end.
SIGNAL
TERMINAL BLOCK
TXB+
TXA-
RXB+
RXA-
TB (5)
TB (4)
TB (1)
TB (2)
RXB+
RXA-
TXB+
TXA-
3. Strip back the insulation on each of the 2 twisted pair wires
about .25 inch.
4.1.4 2-Wire Connection Using Terminal Blocks
Most RS-485 devices employ a two-wire, half duplex configuration.
When using this configuration, be sure to first set the Model 593/TB to
half duplex mode by switching DIP switches and jumpers (refer to sec-
tion 3.0 for this configuration)—then use only the transmit (XMT) pair
as shown below
4. Place the cable through the end plate, and make a small loop
in the cable and feed the cable under the tie wrap which is cur-
rently installed in the board. When you have completed this
assembly it should resemble figure figure 5. Connect one pair
of wires to XMT+ and XMT- (transmit positive and negative)
on the terminal block, making careful note of which color is
positive, and which color is negative.
Model 593/TB
RS-485 Device
XMT+ .......................... +
XMT- ............................ -
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APPENDIX A
4.1.5 4-Wire Connection Using DB-25
PATTON ELECTRONICS MODEL 593/25, 593/45, and 593/TB
SPECIFICATIONS
Most DB-25 connectors on the Model 593/25F conform to EIA-530
interface standards. When connecting to the RS-422/485 devices
which also conform to EIA-530 standards, your cable should have
crossed over wiring, as shown below.
Transmission Format:
Interface Standard:
Connectors:
Asynchronous, full or half duplex
RS-422/RS-485
Model 593/TB
RS-485
DB-25 PIN
Model 593/25F; DB-25 female on
both sides
SIGNAL
DB-25 PIN
SIGNAL
TXA+
TXB-
RXA+
RXB-
2
14
3
3
16
2
RXA+
RXB-
TXA+
TXB-
Model 593/45; RJ-45 on both sides
Model 593/TB; Terminal block on
both sides
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4.1.6 2-Wire Connection Using DB-25
Data Rates:
Up to 115.2 kbps
Most DB-25 connectors on the Model 593/25F conform to EIA-530
interfaces standards. The RS-422/485 devices also conform to EIA-530
requirements and when connecting these devices, follow the wiring
shown below.
Power Supply:
External wall-mount transformer,
Regulated +5 VDC @ 120mA
Isolation:
2500 Vrms/optical Isolation
Dimensions:
Model 593/45 & 593/TB
3.8”L x 2.1”W x 0.79”H
Model 593/25F
RS-485
SIGNAL
DB-25 PIN
SIGNAL
Model 593/25
4.1”L x 2.1”W x 0.79H
TXA
TXB
2
14
+
-
Temperature Range:
Altitude:
0-60°C (32-140°F)
0-10,100 feet
4.2 OPERATING THE MODELS 593 SERIES
Humidity:
5 to 95% noncondensing
Once the Models 593/25F, 593/45, and 593/TB are properly configured
and installed, it should operate transparently___as if it were a standard cable con-
nection. Plug in the external power supply and the units will be powered up.
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