Really ? A standard patch cable worked for you with canbus? From the Seplos bms? Never ever did work for me. What’s the file name of what they sent you?
Ok so what you guys are saying is that even though the port on the boards are labelled canbus/rs485 they do not support them both on the same board? I have spoken to Link at Seplos and I really only tried Can communication and it works with my Rosen batteries