Rockwell Automation 2706-M1 MESSAGEVIEW 421 HARDWARE MANUAL - Manual (Page 105)

6–12 Remote I/O and RS-232 Connections
Publication 2706–816
To an Allen-Bradley PLC ASCII I/O Module
(Catalog No. 1771-DA)
DB-9 Connector (Female)
(DCE)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
2
3
6
7
20
5
4
TXD
RXD
Common
CTS
RTS
DTR
DSR
Common
Note: If you create a cable, connect the cable shield to metal housing or pin 9 of MessageView terminal connector.
RS-232 Communication Cable
MessageView Terminal PLC ASCII I/O Module
NC
Shield
TXD
RXD
DSR
RTS
CTS
DTR
RS-232 Peripheral Port
To an Allen-Bradley PLC BASIC Module
(Catalog No. 1771-DB)
DB-9 Connector (Female)
(DCE)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
2
3
6
7
20
5
4
TXD
RXD
Common
CTS
RTS
DTR
DSR
Common
Note: If you create a cable, connect the cable shield to metal housing or pin 9 of MessageView terminal connector.
RS-232 Communication Cable
MessageView Terminal PLC BASIC Module
NC
Shield
TXD
RXD
DSR
RTS
CTS
DTR
RS-232 Peripheral Port