13
COM Port Pin Definitions
The COM port definitions on both sides of the power control module are the same. It is
recommended that the COM port on the switch side be connected to the inverter and the COM port
on the other side be connected to the cascaded battery.
•
When laying out a signal cable, separate it from power cables and keep it away from strong
interference sources to prevent communication interruption.
•
Ensure that the protection layer of the cable is inside the connector, that excess core wires
are cut off from the protection layer, that the exposed core wire is totally inserted into the
cable hole, and that the cable is connected securely.
•
Use a plug to block the idle cable hole with the waterproof rubber ring, and then tighten the
locking cap.
•
If multiple signal cables need to be connected, ensure that the outer diameters of the signal
cables are the same.
Installing a Signal Cable
4.5
No. Label
Definition
Description
1
PE
Ground point on the shield
layer
Ground point on the shield layer
2
Enable-
Enable signal GND
Connects to the enable signal GND of the
inverter.
3
Enable /12V+
Connects to the enable signal of the inverter and
the positive terminal of the 12 V power supply.
4
485A1
RS485B, RS485 differential
Connects to the RS485 signal port of the
inverter.
5
485A2
RS485A, RS485 differential
6
485B1
RS485B, RS485 differential
signal–
Connects to the RS485 signal port of the
inverter.
7
485B2
RS485A, RS485 differential
signal–
8
CANL
Extended CAN bus port
Used for signal cable cascading in battery
cascading scenarios.
9
CANH
Extended CAN bus port
Used for signal cable cascading in battery
cascading scenarios.
10
PE
Ground point on the shield
layer
Ground point on the shield layer
