OPC Automation DA 2.0

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1 total messages Started by Amir Thu, 07 Aug 2008 15:41

#267

Author: Amir
Date: Thu, 07 Aug 2008 15:41

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Dear friends
Who has worked with OPC Automation DA 2.0 in Delphi?
 I have implemented it completely but I have a big problem with all of
its events like OnDataChange,
My Events fires and the NumItems parameters have the values of the
changed tags, but the values of the ClientHandles, ItemValues,
Qualities and TimeStamps are nil.

Does anyone know what should I do?

Thanks for your help

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