VE.Bus specification support thread

[kukosek]

Hello Yves and thanks for your work.

I am starting a thread so we can share our knowledge about the VEBus protocol.

[kukosek]

Device: VE Multiplus II
Data I was looking for: Power output in watts
Where I found it: read-ram 16

I also suspect that read-ram 14 or read-ram 17 is the power consumption of the invertor. The values are close to 25, which should be the value in watts.

[yvesf]

Hi @kukosek!
thanks, this matches with my findings, see https://github.com/yvesf/ve-ctrl-tool/blob/master/pkg/vebus/constants.go#L23

[tomjnixon]

If it helps, i worked out exactly what's going on with the two inverter power numbers in the spec:

https://github.com/tomjnixon/mk2.py/blob/bf74e781b0d14ae82624e572987118a20df53e11/mk2/ram_var.py#L21-L30