Selecting A Communication Mode - Huawei SUN2000-36KTL Quick Manual

4.5

Selecting a Communication Mode

1. You can choose either the PLC or RS485 communication mode for the SUN2000-36KTL/42KTL.
2. FE communication is optional for the SUN2000-36KTL. If you need to use the FE
communication mode, contact local technical support.
3. If the SUN2000-36KTL adopts FE communication mode, it supports only RS485 and FE
communication modes, and does not support PLC communication mode.
NOTE
• If PLC is used, you do not have to connect any cable to the inverter, but have to connect AC
power cables to the PLC CCO module or SmartLogger2000. For detailed operations, see the
PLC CCO01A User Manual or SmartLogger2000 User Manual.
• If RS485 is used, do not connect the PLC CCO module to the AC power cable.
4.6
Installing RS485 Communications Cables
NOTICE
1. When routing communications cables, separate communications cables from power cables to
prevent communication from being affected.
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.
Connecting to a terminal block (recommended)
The DJYP2VP2-22 2x2x1 computer cable or a communications cable with a cross-sectional area
2
of 1 mm and outer diameter of 14–18 mm is recommended.
1. Remove an appropriate length of the jacket and core wire insulation layer from the
communications cable using a wire stripper.
2. Remove the locking caps from the COM1 and COM2 connectors at the inverter bottom and then
remove the plugs from the caps.
3. Route the communications cable through the locking caps, and then the COM1 (RS485 IN) and
COM2 (RS485 OUT) connectors at the inverter bottom.
4. Remove the terminal base from the terminal block, and connect the communications cable to
the terminal base.
No. Port Definition
1 RS485A IN
2 RS485A OUT
3 RS485B IN
4 RS485B OUT
10
Description
RS485A, RS485 differential
signal +
RS485A, RS485 differential
signal +
RS485B, RS485 differential
signal –
RS485B, RS485 differential
signal –