question

offpist avatar image
offpist asked

2 pcs A-BMS on same CAN-BUS network.

Hi.

I currently have two REC A-BMS connected to the same Cerbo.

One BMS is ID 2 and other is ID 4 in RS485 network, so far so good.

But when I connect them both to CAN-BUS there seems to be some conflict.

I tried separating them, one on VE.CAN input (250kbps), the other on BMS-CAN (500 kbps).

They both show up as separate batteries in device list on the touch screen, but with same VRM instance.

In VRM there is only one battery where one "overturns" the other if it is connected or not.

The multiplus gets confused, and this also brings other errors on my NMEA200 network like autopilot droping out. So the way it is now, I have to leave one disconnected, or turn of NMES2000 output from cerbo.

I believe the problem is they both ID themselves with same name/ID on CAN bus.

Any idea on how to solve this?

I have read thru the manual and don't see how to ID/NAME them different on CAN bus.

cerbo gxBMSVE.Can
2 |3000

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1 Answer
Paul B avatar image
Paul B answered ·

best would be to contact Rec themselves for a solution

2 |3000

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