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nygma2004 / growatt2mqtt

Growatt Solar Inverter Modbus Data to MQTT Gateway
MIT License
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Growatt MOD 6000TL3-X #27

Closed Teppis88 closed 1 year ago

Teppis88 commented 1 year ago

Have to say that this code works fine with this 6kw 3phase model. Only problem is that I can't get voltages from different phases.

Can I somehow scan all the messages that growat sends so I could check em if it sends them?

nygma2004 commented 1 year ago

Yes you can. To make your life easier, maybe you can get a RS485 to USB dongle and you can access modbus directly on your laptop. It is easier to change the modbus parameters in a modbus tester program like Modbus Poll than changing the code, compile and upload. Just like other voltages, the voltage is stored on 0.1V, so you should look for values in 2200-2500 range.

joe288 commented 1 year ago

You can query additional values ​​in the growattInterface.cpp in the ReadInputRegisters() function. As an example you can see how gridvoltage is implemented.

image

I think the values ​​you should be interested in are in the area. image

You have to test the value of the information that interests you.

Unfortunately, I only have the single-phase version and can't do it for you.

joe288 commented 1 year ago

see changes from here https://github.com/wroadd/growatt2mqtt_for3phases

Teppis88 commented 1 year ago

Thanks Joe288! That works :)