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Former Member

Matrikon OPC HDA and MII 11.5


The Resolution query parameter in the query builder doesn't seem to work with a OPC HDA connection.

If I want yesterdays hourly data on the hour I have to set the query SD/ED and RowCount=24 to get 24 rows starting at 00:00 and ending at 23:00. The Resolution seems to have no affect!

Are we missing something in the UDS setup for OPC HDA or is there some sort of config setting on the OPC server that needs set?


Roger DeWeese

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1 Answer

  • Aug 14, 2010 at 02:14 AM

    What UDS version, 2.5.x or 4.0.x?

    I assume your query is History mode?

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    • Former Member Former Member


      Continuing the discussion... I did find UDS 4.x but according to the documentation it does not play well with 11.5.

      So back to the question as to why the resolution does not work in HistoryMode? Maybe I have to live with it!