Huawei SmartACU2000D Quick Manual page 23

6.8 Connecting the Peripheral RS485 Communications Cable
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
9 RS485-5 (+)
10 RS485-5 (–)
11 RS485-6 (+)
12 RS485-6 (–)
• 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.
1. Prepare a communications cable.
2. Connect the communications
cable to the JX01 terminal block.
3. Crimp an OT terminal on the
shield layer, and then connect the
shield layer to the cabinet ground
point.
4. Bind the communications cable.
Definition
RS485A, RS485 differential signal+
RS485B, RS485 differential signal–
RS485A, RS485 differential signal+
RS485B, RS485 differential signal–
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