I am using this inverter and know that it is possible to charge the battery via the grid.
I would like to do this based on the lower prices during night and therefore safe some money 
I connected the inverter via modbus already and I am able to read out all the interesting values and a lot of other stuff.
But I don’t know how I can instruct the inverter to charge via grid.
Does anyone have an idea how t do so or has already implemented this?
Thanks
Stefan