Hi,
We are using a Profibus DP card. Since this is a Profibus PA instrument, we are using a DP/PA coupler (Pepperl+Fuchs KFD2-BR-1PA.1500) to connect to it. And we have many types of instrument connected to it amongst them is Samson Valve Postioner 3730-4.
We have established communication with Device, but thing of concern is we cannot send Setpoint to it, whereas we can read its Readback value.
Need your help in this regard.