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OPC UA Connection configuration

Pascal

Dear users,

I need to communicate between a DeltaV Project (V14.3) and a Citect project (2018 R2 Update 17) . In my Citect project I have to access some tags of the DeltaV project, a temperature measurement (Real) and a value of type UINT.

The result on display is as follows:

I can read the temperature but it is impossible to read the UINT value ?!

The result with TagDebug after several 'Read' attempts

To make sure that the OPC UA server is ok I installed another client on the Citect station to test the communication:

Communication is working properly and tags are read normally. 

Can anyone help me solve this problem!
Thanks in advance

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  • Hi Patrick,

    I tried reading the variable with declarations of different Citect data types:

    Reading is ok for Long, Ulong and String type, strange then that the type declared on the DeltaV system side is 16 bit Integer

    So I will change the Citect data types to ULong or Long instead of Uint and Int

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  • Hi Patrick,

    I tried reading the variable with declarations of different Citect data types:

    Reading is ok for Long, Ulong and String type, strange then that the type declared on the DeltaV system side is 16 bit Integer

    So I will change the Citect data types to ULong or Long instead of Uint and Int

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