Stack’d Series HOMEGRID Technical
Page 14 Chapter3: How to use Monitoring Software EMS Tools
Rear panel CAN communication port: (RJ45 port) follows CAN protocol and RS485 protocol.
For the output system information, the system master uses this interface to communicate with
External inverter PC and other equipment.
Port definitions RJ45 Pin Function
1 CAN-H
2 CAN-L
3 CAN -GND
4 CAN-H
5 CAN-L
6 CAN -GND
7 CAN-H
8 CAN-L
Link A / B communication port:(RJ45 port) the definition of link a and B on the rear panel of
the interface main control module is the same. RS485 interface is used for parallel
communication between the main control modules, and up to 15 devices can be connected in
parallel.
Port definitions RJ45 Pin Function
1 RS485-B
2 RS485-A
3 RS485-GND
4 NC (No connect)
5 NC (No connect)
6 RS485-GND
7 RS485-A
8 RS485-B
Inverter CAN communication port
Rear panel Link A / Link B communication port
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