I suggest you first to try modbus comminucation with a modbus master prgoram like Modbus Poll.

Then you get the correct register adresses of the drive and apply to IX developer.

Thanks

Hi.. I am working on a remote well project. In project I must communicate 12 slaves over Modbus by using an RF modem. My problem that; If my 12 station is online there is no problem at communication. However 1 of my station goes offline all my modbus communication faults. My parameters are default. ...