Atlantic/Fujitsu Zone Control 1.0 control

Hello,

Is someone has found a way to control via home assistant an Atlantic/Fuji ZoneControl 1.0 ? It’s based on Siemens Climatix (POL422 controler), seems to have a Modbus RTU output, and all thermostats are KNX ?

Of course OEM has never release anything to remote control …

Best regards.