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ReadMultipleValues exception

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05 Feb 2020 17:30 #8200 by Boris
Replied by Boris on topic ReadMultipleValues exception
Hello. Thanks for the prompt reply and fix. Now the error does not occur.

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01 Feb 2020 12:33 #8192 by support
Hello.

This issue should now be fixed - QuickOPC 2019.2, (5.56.)1055.1 or later. Please download the latest version form our Web site, verify the build number (on the first page of the installation wizard), install, rebuild and retest.

Best regards

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31 Jan 2020 08:38 #8188 by support
Thank you. I now realized we have probably intentionally disabled it by configuration, as there were some disorganized users who could completely mess up the history and "flow" of the discussion by going back and making edits that changed thing A to thing B - instead of using the Edit for simple corrections that have no influence on the substance.

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30 Jan 2020 18:44 #8187 by Boris
Replied by Boris on topic ReadMultipleValues exception
It looks like a screenshot in the attachment.
Attachments:

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30 Jan 2020 18:34 #8186 by support
Thank you, I edited it now. On my side, I have an Action button below the post, and it has an Edit command in it. But I do not know how it looks to the regular user.

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30 Jan 2020 18:26 #8185 by Boris
Replied by Boris on topic ReadMultipleValues exception
I created a separate topic. But I can not edit the old message. There is no button for editing.

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30 Jan 2020 18:06 #8183 by support
Please create a separate forum thread for the second, unrelated issue, and then edit your original post to remove the parts that do not relate to the original issue.
Thank you.

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30 Jan 2020 09:19 - 30 Jan 2020 18:33 #8182 by Boris
Replied by Boris on topic ReadMultipleValues exception
Thanks.

> QuickOPC does not support them, so you won't be able to read that node after the fix anyway.
I understand it. The main thing for me is to avoid an error. The fact is that we made a program with which users can try to read any tag they wish. And the main thing for us is to exclude the program crash.

[unrelated part removed]
Last edit: 30 Jan 2020 18:33 by support.

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30 Jan 2020 08:08 #8180 by support
Hello.

I was able to reproduce the problem. This appears to be a bug in QuickOPC 2019.2. Thank you for reporting it.
There will be a fix (a new build). Please be patient - it may take some days. I will make another post here when it is ready.

Note that the problem has to do with reading values of type ExpandedNodeId that contain non-zero server index. QuickOPC does not support them, so you won't be able to read that node after the fix anyway. The proper behavior is that a non-null .Exception appears in the corresponding element of the array returned from ReadMultiple or ReadMultipleValues.

Regards

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29 Jan 2020 15:57 #8179 by Boris
Replied by Boris on topic ReadMultipleValues exception
Oh sure. This is not the first time I have been updating. I copied the new libraries from the "\OPC Labs QuickOPC 2019.2\Assemblies\net47" folder.I also updated all files "..._TLB.pas" from "\OPC Labs QuickOPC 2019.2\Examples-COM\OP\Imports" folder.
On your PC, the error does not occur when reading the tag "ExpandedNodeId"?

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