Rockwell Automation MSR04XI Serial Communications Module RS232 User 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 .