HI @zlomennypez
I have been trying to figure out what registers to use
i have tried using CAS modbus scanner, when i change work mode from solax app i can see that holding register 140 changes accordantly 0-3
If i look in https://secondlifestorage.com/index.php?attachments/hybrid-x1-x3-g3-modbustcp-rtu-v3-21-english-pdf.24841/ it looks like 180 is read holding reg and 64 is write single input reg
i have no clue where to look