KB87284
Published: March 7, 2023
Revision: 1.0

Event messages with OPC-UA, Data Simulator, and other "Automatic" tags may briefly report an error


Applies To:

groov View

Versions Affected:

3.0a to current


Symptoms:

After configuring an event to display a tag's value in its message body, you may see this instead of the correct value:

<no value found for tag (74, 0, 1)>

The numbers in parentheses depend on the tag/project.

groov View may not load some tags into the project database until a gadget or event calls for it. The delay in loading it into the database may cause groov View to briefly display that error message. The error message should clear up within a second or so; usually, by the next time the event is triggered.

Note that the same error message appears if a tag doesn't exist in the project database. In that case, the error will continue to appear in each sent message.

Resolution:

This issue resolves itself the next time the event is triggered.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


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