Selecting A Communication Mode - Huawei SUN2000-25KTL-US Quick Installation Manual

3.4

Selecting a Communication Mode

Model
SUN2000-
25KTL/30KTL-US
(with PLC)
SUN2000-
25KTL/30KTL-US
(without PLC)
3.5
Installing RS485 Communications Cables
NOTICE
When routing communications cables, ensure that communications cables are separated from
power cables and away from interfering source to prevent communication from being affected.
NOTE
1. If RS485 is used, connect the RS485 communications cable. If PLC is used, do not connect the
communications cable.
2. The RS485 communications cable can connect to either a terminal block or an RJ45 network port.
Use one connection mode in practice. Connecting to the terminal block is recommended.
3. If the RS485 communications cable is required, you are advised to route the RS485
communications cable through a pipe. Before connecting cables, remove the corresponding
waterproof cable connectors.
Method 1: Connecting to the Terminal Block (Recommended)
The DJYP2VP2-22 2 x 2 x 1 cable or a communications cable with a wire sectional area of 1 mm
2
(0.00155 in. ) and external diameter of 14–18 mm (0.55–0.71 in.) is recommended.
1. Peel off the RS485 communications cables.
Communication Mode
RS485
Communication Communication
Supported
Supported
PLC
1. Only one communications mode
can be selected in practice.
2. If PLC is used, do not connect the
Supported RS485 communications cable.
3. If RS485 is used, do not connect
the PLC CCO module to the AC
power cable.
Not supported N/A
11
Remarks
2