@HonzaS Thanks!
Too bad REG 141 description is a total mess. I think it represents System Work mode.
I'd be interested switching between Zero Export to Load and Zero Export to CT by modbus command.
Found it and verified regWrite() with Deye Cloud Read of System Work Mode-1 Page for 12k 3f model.
System Work Mode = REG 142
0 : Solar Sell
1: Zero Export to Load
2: Zero Export to Ct
