Hi
New to the forum.
I’ve just got the Solis Rai and using this forum, I was able to get Raw Modbus working using the Datalogger. No Solarman v5 protocol involved at all which I’m not sure is a good thing or not 
My issue with the modbus registers in circulation is, I’m unable to locate the correct register for the PV CT meter. Ive checked all the FC4 registers from 33000 to 33300.
Does anyone have any idea which register is used to get the PV reading from the PV CT? Or does anyone have an updated modbus doc for Solis? I’ve raised a ticket with Solis but they haven’t even picked it up yet
Edit, seems I put this in the wrong thread: the related thread is Solis Inverter Modbus integration