Connecting the Peripheral RS485 Communications Cables
Connect peripheral RS485 communications cables to the JX01 terminal block. All RS485 communications cables are connected in the same way. This section describes how to connect two RS485 communications cables.
No. |
Port on the JX01 Terminal Block |
Definition |
|---|---|---|
1 |
RS485-1 (+) |
RS485A, RS485 differential signal+ |
2 |
RS485-1 (–) |
RS485B, RS485 differential signal– |
3 |
RS485-2 (+) |
RS485A, RS485 differential signal+ |
4 |
RS485-2 (–) |
RS485B, RS485 differential signal– |
5 |
RS485-3 (+) |
RS485A, RS485 differential signal+ |
6 |
RS485-3 (–) |
RS485B, RS485 differential signal– |
7 |
RS485-4 (+) |
RS485A, RS485 differential signal+ |
8 |
RS485-4 (–) |
RS485B, RS485 differential signal– |
9 |
RS485-5 (+) |
RS485A, RS485 differential signal+ |
10 |
RS485-5 (–) |
RS485B, RS485 differential signal– |
11 |
RS485-6 (+) |
RS485A, RS485 differential signal+ |
12 |
RS485-6 (–) |
RS485B, RS485 differential signal– |
- For the SmartACU2000D-D-01, do not connect a peripheral RS485 communications cable to the RS485-1 port (ports 1 and 2 on the JX01 terminal block), because the PID01 communications cable has been connected to this port.
- For the SmartACU2000D-D-03, do not connect a peripheral RS485 communications cable to the RS485-1 and RS485-2 ports, because the PID01 communications cable has been connected to the RS485-1 port (ports 1 and 2 on the JX01 terminal block) and the PID02 communications cable has been connected to the RS485-2 port (ports 3 and 4 on the JX01 terminal block).
- For the SmartACU2000D-D-03, do not connect a peripheral RS485 communications cable to the RS485-3 port (ports 5 and 6 on the JX01 terminal block) because the communications cable of the MBUS CCO module has been connected to this port.
- JX01 ports 7, 8, 9, 10, 11, and 12 on the SmartACU2000D-D-03 can be connected to the RS485 cable.
- JX01 ports 7, 8, 9, 10, 11, and 12 on the SmartACU2000D-D-01 can be connected to the RS485 cable only after the SmartModule is installed.
- Prepare the communications cable.Figure 5-18 Length for cable stripping
- Connect the communications cable to the JX01 terminal block.
- Crimp an OT terminal on the shield layer, and connect the shield layer to the cabinet ground point.
- Bind the communications cable.Figure 5-19 Connecting RS485 communications cables
