Integrate Chisage Mars 3p lv hybrid Inverter

[oli2m3]

Hello,
my goal is to develop an integration for this hybrid inverter to accomplish charging and discharging the battery. Theoretically I have broken down this to a modbus write of 14 registers, if everything else is setup right. I have chosen this project because the hybrid inverter seems to be similar to deye/sunsynk.
I have aleady integrated the read part for the chisage mars 3p lv hybrid inverter in a definition. As a part time developer it is not so easy for me to understand the write part. To steer charging and discharging I have to write 14 modbus registers? At the moment I have no clue how to accomplish it. Does someone has a hint for me?
Best regards