search

ArdescoConsulting / growattRS232

Python wrapper for getting data asynchonously from Growatt inverters via serial usb RS232 connection and modbus RTU protocol.
MIT License
20 stars 8 forks source link

Growatt SPH series #2

Open sandervandegeijn opened 3 years ago

sandervandegeijn commented 3 years ago

I'm looking at the possibilities of using a Growatt SPH series inverter which supports feeding power back to the grid from a battery. Would it be possible to change the mode/times/maybe even output power through RS-232? This would make the inverter perfect for DIY battery builds :)

I haven't found new protocol documentation on Google but maybe I have overlooked some stuff.

haqa commented 2 years ago

I would like to help with this as I have an SPH5000. I can provide data dumps or access to the Pi connected to the plant but I'm uncertain where to start decoding the data stream.

I am seeing curious scaling effects on some of the data (I think) and would welcome any assistance you can offer.

If this is a published protocol I'm very happy to take the spec and augment the decoder and PR the changes.