Huawei SUN2000L-5KTL Quick Manual page 12

COM Port Pin Definitions
No. Label Definition
1 485B1 RS485B, RS485 differential signal–
2 485A1 RS485A, RS485 differential signal+
3 485B2 RS485B, RS485 differential signal–
4 485A2 RS485A, RS485 differential signal+
5 EN– Enable signal–
6 EN+ Enable signal+
7 N/A N/A
8 PE
Grounding the shield layer
Description
Connect to the RS485 signal port on the
energy meter.
Connect to the RS485 signal port and
enable signal port on a battery.
N/A
Connects to the shield layer of the cable.
11
COM port (COM)
Click