Communication Cables Connection Of Master And Slave Battery Strings - Pylontech Force-H3 Operation Manual

3.5.3.2 Communication Cables Connection of Master and Slave Battery Strings

The communication for master/slave string connection shall use a 8pin pin-pin RJ45 cable,
connecting from the first BMS Link 1 to second BMS Link 0, then from second BMS Link 1 to third
BMS link 0(if has), all the way to the last BMS Link 0. The BMS with Link Port 0 EMPTY is defined
as the Master string. Select either CAN or RS485 on the master string for further connection with
the inverter or upper controller.
The slave strings` CAN/RS485 Port is ineffective in this case.
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