Concept
RJ45 Pinout for the RS-485 Ports of the RP-C Controller
This section provides the RJ45 pinout for the RP-C controller's two RS-485 ports.
The RS-485 ports are labeled RS-485 Com A and RS-485 Com B. For more information, see RP-C Communication Ports .
The RJ45 pinout differs only with regards to pin 2 between the two RS-485 ports.
For the RP-C-12A-F-24V, RP-C-12B-F-24V, RP-C-12C-F-24V, and RP-C-16A-F-230V controller models, the rating for the RS-485 Com A port, the RJ45 pinout for the RS-485 Com B port, and the labeling of the two RS-485 ports differ between different hardware versions of the controllers. For more information, see Differences Between RP-C Hardware Versions .
The wiring recommendations for the RS-485 ports depend on the type of network the ports are used for. For more information, see Communication Port Wiring .
RJ45 pinout for the RP-C controller RS-485 ports
|
RJ45 Pin |
Description |
|
1 |
Not connected |
|
2 |
Not connected |
|
3 |
RS485+ (A) |
|
4 |
+24 VDC |
|
5 |
Ground |
|
6 |
RS485– (B) |
|
7 |
+24 VDC |
|
8 |
Ground |
|
RJ45 Pin |
Description |
|
1 |
Not connected |
|
2 |
TXEN |
|
3 |
RS485+ (A) |
|
4 |
+24 VDC |
|
5 |
Ground |
|
6 |
RS485– (B) |
|
7 |
+24 VDC |
|
8 |
Ground |
Wiring
Communication Port Wiring
RP-C Communication Ports
RP-C Sensor Bus
RP-C Room Bus
RP-C Modbus
Differences Between RP-C Hardware Versions
RP-C Models