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5.3.1 DA Client no longer working under 2018.3 COM runtime

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15 May 2019 14:18 #7370 by support
"... the DA reads are no longer working." is not specific enough. What precisely is happening? Some error?

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15 May 2019 13:18 #7367 by jestraub
We have a VB6 OPC Client application that was originally written using COM DA using QuickOPC 5.3.1.

Application uses the EasyDAClient.ReadItemValue. All worked fine running under the QuickOPC 5.3.1 runtime.

We recently upgraded to QuickOPC 2018.3 and added (not replaced) our applications ability to also use COM UA (EasyUAClient.ReadMultipleValues).

Running the application under 2018.3 runtime, the UA portion runs fine but the DA reads are no longer working.

Any advice?

Thanks!

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15 May 2019 05:35 #7366 by support

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14 May 2019 21:42 #7364 by jestraub
Recently updated to 2018.3 to add UA capabilities to our program.

UA working great but DA portion (originally written under 5.3.1) is no longer working under 2018.3 runtime (COM only).

Both are COM.

Any advice?

Thanks!

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