I have connected one Daly BMS over their interface board (WNT) to the VE. BMS CAN.
Works fine, only charging/discharging is exchanged.
If I connect more than one device, the first two minute it works fine and switch the BMS boards. SOC and voltage are correct. The current change from positive to negative. After two minutes, the values don't change anymore.
After disconnecting the cable for 5 seconds and connecting again, it works fine for the next two minutes.
BMS CAN communication TX/RX is counting up every second and there are no protocol errors.