Since you ask here I guess you have a victron system.
I don’t have a REC-BMS.
But: connect the REC via CAN to the GX-device.
Enable on the GX the mqtt-protocol. (hint: keepalive).
Now you can get the data from the gx.
I should have stated that I am running the REC BMS on the Victron CERBO on the CAN bus with a Quattro
I want to use the REC BMS values in Homeassistant. I can most likely read the values from the REC BMS Wifi module using the REST Sensor (not yet tested) but as I am getting the other Victron values over MODBUS it would have been easier to read that values in the same way.
But I will go with the MQTT setup as per your proposal
Hi @SFH
Is the BMS broadcasting those values?
Are you see them on the Cerbo’s remote console pages?
If yes, for Modbus, those (mincellvoltage and maxcellvoltage) are 1290 and 1291 registers.
And the BMS is mapped as 225 as far as unit ID is concerned.