Hello
I have a Multplus II 48/5000/70 and a EEL LiFePo4 battery with what I know a JK BMS with CAN communication. The BMS allows me to choose "Victron" as communication protocol and it should work with MPII.
But as soon as I connect the UTP cable to VE.BUS in the MPII, it switches off and gives me various error codes via LEDs (I can not connect via MK3-USB while the MPII is in error).
LEDs indicate error no 5, 11 and 14. When I switch the MPII on while the UTP cable is already connected, it gives me this disco (attached).
When the UTP cable to the BMS is disconnected, everything works fine.
I have updated both MPII and BMS firmware and as far as I know, they should be compatible with each other.
What else could I be missing? In the beginning I did not have the MPII earth connected to battery GND - could this have damaged some communication components? This is remote setting, no constant AC-IN is available.