Recent content by cxtinac

Just wanted to add my appreciation and thanks for this thread, it has helped me enormously. I had been struggling to find clear data for the Modbus register mapping on our 2 Growatt SPF3000TL inverters. The register list near the top of this thread (p1) has been incredibly helpful. I don't mean...

In case anyone else searches & comes across this thread, I did solve the problem. More details are in this Reddit thread, but briefly this Growatt inverter has to be cold-rebooted for the Modbus device ID to be recognized. As well, I can confirm that setting #28 "Address setting" is indeed...

Thanks for responding, that's a possibility. I know others have done this. Anyone?

Thanks for responding. I am connecting over RS485 Modbus RTU as I mentioned. This is a wired protocol, it has nothing to do with bluetooth and this Growatt does not support bluetooth. My code sends an ID over the serial modbus wires that is intended to match the ID of the Growatt. It appears the...

I have 2 Growatt SPF 3000TL LVM inverters which are running great, and I'm trying to get RS485 Modbus RTU data from them. I have code running on an ESP32 and I'm pretty sure talking valid protocol to one of them (I've put a scope on the connection and I can see the dialog back & forth). But when...