Rockwell Automation 1769-ASCII Compact I/O ASCII Module - Manual (Page 19)

Rockwell Automation Publication 1769-UM012B-EN-P - January 2014 19
Compact I/O ASCII Module Chapter 1
Figure 2 - RS-232 Wiring Diagram - Module to Printer (hardware handshaking enabled, standard
printer adapter cable)
Figure 3 - RS-422 Wiring Diagram
Figure 4 - RS-485 Wiring Diagram
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
ASCII
TXD-
NC
NC
1
2
3
4
COM 5
RXD+
RTS
CTS
6
7
8
TXD+ 9
RXD-
TXD-
COM
TXD+
RXD+
RXD-
TRXD-
NC
NC
NC
NC
1
2
3
4
COM
RTS
CTS
5
6
7
8
TRXD+ 9
TRXD-
COM
TRXD+
ASCII