>Phase to Phase value is full scale for AB and BC, half for CA. LCD display full scale for all phase.
Apparently you can read values from the Power Logic into the RTU, but you do not believe the values are correct. Hence it is not a comm hardware layer issue.
Whose LCD display? The drive or the RTU? Is this the source of the discrepancy?
>If I use modscan program I can read all the values without any issues.
If Modscan can read the correct values (how do you know they're correct values?) from any or all registers in the Power Logic, then as a Modbus slave, the Power Logic is not the problem. The hardware transfers the contents of the registers.
Some issue in the RTU . . . . display not reading the register that you think it's reading???