Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module - Manual (Page 47)

Publication 1747-UM005B-EN-P - March 2006
Installation and System Configuration 4-9
These illustrations show wiring diagrams for the RS-423/232, RS-422,
and RS-485 communications.
RS-423/232 DTE to DCE (Non-modem Hardware Handshake to DCE)
RS-423/232 DTE to DCE (Modem Hardware Handshake to DCE)
NC
RXD
TXD
DTR
COM
DSR
RTS
CTS
NC
1
2
3
4
5
6
7
8
9
CD
TXD
RXD
COM
RI
1
2
3
4
5
6
7
8
9
8
3
2
20
7
6
4
5
22
DTR
DSR
RTS
CTS
DTE DCE
Peripheral Interface Module
9-pin 25-pin
NC
RXD
TXD
DTR
COM
DSR
RTS
CTS
NC
1
2
3
4
5
6
7
8
9
CD
TXD
RXD
COM
RI
1
2
3
4
5
6
7
8
9
8
3
2
20
7
6
4
5
22
DTR
DSR
RTS
CTS
DTE DCE
Peripheral Interface Module
9-pin 25-pin