Rockwell Automation 1769-XXXX Compact I/O Modules - Manual (Page 47)

Rockwell Automation Publication 1769-IN088A-EN-P - February 2011 47
Module Wiring Chapter 2
1769-ASCII Compact ASCII module
NC 1
RXD 2
TXD 3
NC 4
COM 5
NC 6
RTS 7
CTS 8
NC 9
DCD
TXD
RSD
DSR
COM
DTR
CTS
RTS
GND
8
2
3
6
7
20
5
4
1
1
3
2
6
5
4
8
7
ASCII DTE DTE 9-pin 25-pin
TXD-
NC
NC
1
2
3
4
COM 5
RXD+
RTS
CTS
6
7
8
TXD+ 9
RXD-
TXD-
COM
TXD+
RXD+
RXD-
ASCII
NC
NC
NC
1
RXD 2
TXD 3
4
COM 5
6
RTS 7
CTS 8
N.C. 9
CD
TXD
RXD
DSR
COM
DTR
CTS
RTS
RI
8
2
3
6
7
20
5
4
22
1
3
2
6
5
4
8
7
9
GND 1
ASCII DTE DTE 9-pin 25-pin
TRXD-
NC
NC
NC
NC
1
2
3
4
COM
RTS
CTS
5
6
7
8
TRXD+ 9
TRXD-
COM
TRXD+
ASCII
RS-232 Wiring Module to DTE Device (hardware handshaking disabled)
RS-232 Wiring Module to Printer (hardware handshaking enabled, standard
printer adapter cable)
RS-422 Wiring
RS-485 Wiring