Fronius battery control?

Hi,

while I unfortunately don’t own any Fronius inverter myself to tamper with, I’m trying to implement battery control for it.
There’s the powerflowchannelpakku channel to read what’s going into/out of battery but I want to enforce charging or discharging.
The Fronius Modbus document mentions a register ChaGriSet to allow for charging from the grid or not but I have not seen this in the binding.

By chance, has anyone played with or implemented battery control on a Fronius inverter or knows how that would work ? maybe @JimT ? (sorry for pinging you).

thanks

Unfortunately I don’t have a battery, and only a Fronius Symo inverter, not the Gen24 (Hybrid). If you know the json / API to control this, I’d be happy to add the capability to the binding.