Specifications

Publication 1747-UM011G-EN-P - June 2008
RS-232 Communication Interface 213
Pin Assignments for Wiring Connectors
Use the following pin assignments to wire the connectors of
Allen-Bradley control devices with modems and peripheral devices
that support RS-232 communication. See the table below to find the
wiring diagram that you need.
Personal Computer to a Modem (Hardware Handshaking Enabled)
(1) Connect to the shield of the cable.
To connect this
device
To this Device Remarks See this
page
Personal computer Modem Hardware handshaking enabled 213
Peripheral DTE Hardware handshaking disabled 214
SLC 5/03, SLC 5/04,
and SLC 5/05
processors
Modem Hardware handshaking enabled 214
Peripheral DTE Hardware handshaking disabled 215
Personal Computer Using a 1747-CP3 cable 215
1747-KE module Modem Hardware handshaking enabled 216
Peripheral DTE Hardware handshaking disabled 216
1746-BAS module Modem Hardware handshaking enabled 217
Peripheral DTE Hardware handshaking disabled 217
2760-RB module Modem Hardware handshaking enabled 218
Peripheral DTE Hardware handshaking disabled 218
PLC-5 (channel 0) Modem Hardware handshaking enabled 219
Peripheral DTE Hardware handshaking disabled 219
1
2
3
4
5
6
7
8
9
8
3
2
20
7
6
4
5
22
1
1
3
3
4
5
6
7
8
9
8
2
DCD
TXD
DTR
COM
DSR
RTS
CTS
RI
RXD
DCD
GND
(1)
TXD
DTR
COM
DSR
RTS
CTS
RI
RXD
2
20
7
6
4
5
22
25-Pin 9-Pin PC
Modem 9-Pin 25-Pin
DTE DCE
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