Hie all,

I need to configure WinCC Advance RT to communicate as modbus master with multiple slave devices. Where i am able to read single device only. M finding difficulty to read Float data from other device. these are the modbus address and function code used.

device 1 - Function Code: 4 : Input register

Modbus address : 30071. ( this data not readable in WinCC)

Device 2 - Function code: 1: Input Status

modbus address : 10001. ( data Read in WIncc).

M attaching few screen shots. for better understanding.

P.S: device1 : energy meter, Device 2 : ICP CON DI module

thanks in advance,

Regards.

Closed cause question posted twice.

The second thread with the subject Modbus 485 config is published within the conference SIMATIC WinCC (TIA Portal).