Huawei LUNA2000-NHS0 Quick Manual page 15

COM Port Pin Definitions
Pins 6 to 10 are close to the groove side.
The communications terminals on the inverter side need to be connected to RS485+\RS485-,
EN+\EN-, and PE. The communications terminals on the cascading side need to be connected to
RS485+\RS485-, EN+\EN-, CANH\CANL, and PE.
No. Label Definition
1 PE Ground point on the shield
layer
2 Enable- Enable signal GND
3 Enable+ Enable signal+
4 485A1 RS485A, RS485 differential
signal+
5 485A2 RS485A, RS485 differential
signal+
6 485B2 RS485B, RS485 differential
signal–
7 485B1 RS485B, RS485 differential
signal–
8 CANL Extended CAN bus port
9 CANH Extended CAN bus port
10 PE Ground point on the shield
layer
groove
Description
Ground point on the shield layer
Connects to the enable signal GND of the
inverter.
Connects to the enable signal of the inverter.
Connects to the RS485 signal port + of the
inverter or cascaded batteries.
Reserved
Reserved
Connects to the RS485 signal port – of the
inverter or cascaded batteries.
Used for signal cable cascading in battery
cascading scenarios.
Used for signal cable cascading in battery
cascading scenarios.
Ground point on the shield layer
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