Rockwell Automation MSR04XI Serial Communications Module RS232 - Manual (Page 7)

MSR04XI October 2005 – Issue 8 7
Triguard SC300E MSR04XI Serial Communications Module RS232
Port 1
(9-way)
J2
(backplane)
1 n/c
2 Rx A12
3 Tx C10
4 n/c
5 Ground A14
6 n/c n/c
7 RTS A10
8 CTS C12
9 n/c n/c
Port 3
(9-way)
J2
(backplane)
1 n/c
2 Rx A28
3 Tx C26
4 n/c
5 Ground A30
6 n/c n/c
7 RTS A26
8 CTS C28
9 n/c n/c
EXTERNAL CONNECTIONS
Pinouts and signals for front panel connectors J4 to J6 through to J2 backplane are given in
Table 2-2.
Is your interface DTE (data terminal equipment) or DCE (data communications equipment)?:
The point of reference for all signals is the terminal (or PC).
Transmit and receive leads (2 or 3) can be reversed depending on the use of the equipment,
either DTE or DCE.
Table 2-2. Front panel & backplane connector pinouts with signals
Port 0
(9-way)
J2
(backplane
1 n/c
2 Rx A4
3 Tx C2
4 n/c
5 Ground A6
6 n/c n/c
7 RTS A2
8 CTS C4
9 n/c n/c
Port 2
(9-way)
J2
(backplane)
1 n/c
2 Rx A20
3 Tx C18
4 n/c
5 Ground A22
6 n/c n/c
7 RTS A18
8 CTS C20
9 n/c n/c
n/c =No connection
Wiring schematic for serial communication cables are shown in Figure 2-2 .