Installing The Rs485 Communications Cable - Huawei SUN2000-90KTL Series Quick Manual

4.6

Installing the RS485 Communications Cable

1. When routing the communications cable, separate it from power cables and connect the shield
layer to the ground point to prevent communication from being affected.
2. The RS485 communications cable can connect to a terminal block or an RJ45 network port.
Select one in actual installation.
Connecting to a Terminal Block (Recommended)
No. Definition
1 RS485A IN
3 RS485B IN
After the RS485 communications cable is installed, seal the cable gland.
Description
RS485A, RS485
differential signal+
RS485B, RS485
differential signal–
No. Definition
2 RS485A OUT
4 RS485B OUT
9
Description
RS485A, RS485
differential signal+
RS485B, RS485
differential signal–