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CallResponse not compatible with Beckhoff client
May 23, 2023
18:07, EEST
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Manfred Hausmann
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Hi

In the CallResponse of the method ResetJobCounters (see Euromap 83) the Porosys server returns an ArraySize of -1 for the StringTable in the ResponseHeader and the DiagnosticInfo.
The client from Beckhoff does not accept this. Now the question is, whether an ArraySize of -1 is legal (compliant to opc ua standard).

Can you please answer this question?

Best regards,
Manfred

May 23, 2023
19:57, EEST
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Jouni Aro
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https://reference.opcfoundation.org/Core/Part6/v105/docs/5.2.5

“If an Array is null, then its length is encoded as −1. See 5.1.9 for a discussion of zero-length vs null arrays.”

May 24, 2023
11:41, EEST
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Manfred Hausmann
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Thanks a lot for the clarification

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