Hi Yair,
are you mind to share you program for this to me, i have similar project that using 2 inverter 3G3MV with CPU CQM1H. this project, already old project but i need to replace the screen in beginning but somehow the inverter giving alarm CAL and i not so understand where the logic for communication. I hope with looking you case can find solution in here.
really appreciate if you can share it.
Thanks & regards,
Irvan