Installing The Rs485 Communications Cable - Huawei SUN2000-55KTL Quick Manual

4.6

Installing the RS485 Communications Cable

NOTICE
1. When routing communications cables, separate communications cables from power cables to
prevent communication from being affected by signal interference.
2. An RS485 cable can connect to either a terminal block or an RJ45 network port. It is
recommended that the RS485 cable connect to a terminal block.
Terminal Block Connection (Recommended)
The DJYP2VP2-22 2x2x1 computer cable or a communications cable with a conductor cross-
sectional area of 1 mm
1. Remove an appropriate length of the jacket and core wire insulation layer from the
communications cable using a wire stripper.
2. Remove the cable terminal base from the terminal block. Connect the communications cable to
the terminal base.
3. Route the cable through the waterproof
connector.
2
and outer diameter of 14–18 mm is recommended.
No. Port Definition
1 RS485A IN
2 RS485A OUT
3 RS485B IN
4 RS485B OUT
4. Install the terminal base on the terminal block,
and connect the shield layer to the ground point.
12
Description
RS485A, RS485
differential signal+
RS485A, RS485
differential signal+
RS485B, RS485
differential signal–
RS485B, RS485
differential signal–