Connecting cables – Rockwell Automation 1203 Serial Communications Module Series B User Manual
Page 27
2–13
Installation
1203–5.5 September 1995
This section provides information that you need to connect the cables
to your Serial Communications Module.
Important: When connecting your cables, you should make sure
that the network is properly terminated. You should
also ground the shield at the end furthest from the Serial
Communications Module.
1746-BAS Module Serial Connections
Communications Module
9-Pin D-Shell
1
2
3
4
5
9
8
7
6
5
4
3
2
1
6
7
8
9
COM
N.C.
TX
N.C.
RX
N.C.
N.C.
N.C.
COM
COM
N.C.
DTR
CTS
TX
RTS
RX
DSR
N.C.
1746-BAS Module
Port Connection
Serial Communications Module to 1746-BAS Module
PRT1, PRT2 RS–232 Mode Port Connection Diagram
AB0401B
Communications Module
9-Pin D-Shell
1
2
3
4
5
9
8
7
6
5
4
3
2
1
6
7
8
9
COM
RXD –
RXD +
N.C.
SHIELD
N.C.
TXD +
TXD –
COM
COM
TXD +
N.C.
N.C.
N.C.
N.C.
RXD –
RXD +
TXD –
1746-BAS Module
Port Connection
Serial Communications Module to 1746-BAS Module
PRT1, PRT2 RS–422 Mode Port Connection Diagram
AB0402B
Communications Module
9-Pin D-Shell
1
2
3
4
5
9
8
7
6
5
4
3
2
1
6
7
8
9
COM
N.C.
N.C.
N.C.
SHIELD
N.C.
TXD/RXD +
TXD/RXD –
COM
COM
TRXD +
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
TRXD –
1746-BAS Module
Port Connection
Serial Communications Module to 1746-BAS Module
PRT1, PRT2 RS–485 Mode Port Connection Diagram
AB0403B
GND
GND
GND
Connecting Cables