ABB Watermaster

[YoungWint]

I have an ABB watermaster on a Siemens Profibus Platform.

Obviously I want to read this data but each slice of data is 5 bytes in length. 4 bytes being the value and the 5th being status.

To read this do I need to use the DP read instruction? Or can I simply map as PID (Value) and PIW (Status).

In my hardware I have configured so each Slot of IO being started on an even number, guess if DP read is required this must be changed to consecutive.

Any thoughts would be appreciated.

 

[KalleOlsen]

Try to put the addressing in the process image area, QB/IB127 and downwards. (Might allow higher address - it is cpu dependant). Then you can read the status with L IBx, and the value with L IDz.

Kalle

 

[YoungWint]

As the data is already mapped to Peripheral area I think as you suggest Kalle should be fine to L PID xxx and L PIB xxx.

Thanks