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CompDevPercent and ExcDevPercent values different from configured values

Question asked by SeanDavey on Jun 22, 2017
Latest reply on Jun 27, 2017 by rdavin

Hi Everyone,

 

When I create tags in PI, I specify the CompDevPercent and ExcDevPercent.

However when I import the tag configuration into Excel later and review the CompDevPercent and ExcDevPercent values as part of a validation protocol, the imported values are very slightly different. See the examples in the image.

This only happens to some tags, and it seems to depend on the Zero and Span values.

This issue is impacting the tag configuration validation process, as our test scripts look for the exported and imported values to be the same.

 

Has anyone seen this ?, and is there a solution for it?

 

Thanks,

Seán

 

 

CompDevPercent Difference.PNG

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