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Union Complex Data Type

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05 Sep 2019 07:44 - 05 Sep 2019 07:45 #7706 by support
Replied by support on topic Union Complex Data Type
OPC UA does not use the term "union", but if what you mean is a StructuredType with "switch" fields, as described in OPC UA 1.04 spec Part 5, Annex E: OPC Binary Type Description System, then yes, QuickOPC should be able to decode it.

For more information, see
- www.opclabs.com/products/quickopc/extensions/opc-ua-complex-data
- opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...omplex%20Data%20Extension.html

Complex data in UA is, well, complex, so I suggest that you test it out with your particular server and cponfiguration first.



Best regards
Last edit: 05 Sep 2019 07:45 by support.

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04 Sep 2019 22:03 - 05 Sep 2019 07:45 #7701 by kriskazmar
Union Complex Data Type was created by kriskazmar
Will QuickOPC-UA .NET be able to decode the data for the following array of structures, where the structure contains a union complex data type? The OPC UA server address space will define the Event, Alarm, Valve and Mode structures, and will define the union complex data type per Part 6 of the OPC UA specification.
structure Event
{
     UInt32 SwitchValue;
     union
     {
              structure Alarm;
              structure Valve;
              structure Mode;
      } Union;
     UInt32 EventId;
     DateTime EventDateTime;
};
array Event Events[500];
Last edit: 05 Sep 2019 07:45 by support. Reason: added formatting

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