RC-1170/1270 Redundancy Switch Controllers
Revision 0
Installation and Connectors
2–7
MN-RC-1170/1270
J3, EIA 232/485
Table 2-3. ‘J3’ 2-Wire EIA-485 Interface Connector Pinout
Pin #
Description
Function
5
9
+RX/TX
Signal
4
8
-RX/TX
Signal Complement
3
7
+RX/TX
Signal
2
6
-RX/TX
Signal Complement
1
GND
Ground
Table 2-4. ‘J3’ 4-Wire EIA-485 Interface Connector Pinout
Pin #
Description
Function
5
9
+TX
Signal
4
8
-TX
Signal Complement
3
7
+RX
Signal
2
6
-RX
Signal Complement
1
GND
Ground
Table 2-5. ‘J3’ EIA-232 Interface Connector Pinout
Pin #
Description
Function
5
9
4
8
3
RD
Receive Data
7