I've just connected my SMA Inverter (SB3.0-1AV-41) using the ModBus protocol. Connection was made successfully, but all I retrieve from fetching values is -1 or synonyms (65535 for uint16, 4294967295 for uint32,...).
I have some ModBus information on this specific inverter ( modbuslist_en.html), and I've tried to crosscheck this with the (slightly outdated) SMA-Modbus example on the Library, but no dice... I cannot read out values from my Inverter and start building my Solar dashboard...
I'm using the bèta of bOS 4.8.0 and these are my settings for getting the value of Phase A, address 199 in the SMA datasheet, so I use 198 in bOS;
Advise or tips?
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