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Customer has had for a brief moment an accidental time travel on its PI DA server. How to delete the PI values generated in that time slot?

Sietse

Customer has had for a brief moment an accidental time travel on its PI DA server, for a couple of seconds the system time went two months in the future and back. During that time travel several entries were generated , especially Totalizer and Performance Equations tags have now a value in the future. We would like to remove these values but some how they cannot be deleted. Neither SMT/Archive editor nor Powershell RemovePivalue command is able to do that? Any suggestions? Is it because the entries are in an archive with different start and end times?

 

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    Interesting!

     

    I want to ask how these PI tags are defined. Because future values should only be possible to record when the tags are configured for "future data", as opposed to the normal configuration of "Real-time data". Normal tags are unable to record values more than appr. 5 minutes into the future, but future tags can have both future and historical data, so I expect this might be why it was even possible to record these in the future. Are they actively using these tags to record future values?

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  • 0

    Interesting!

     

    I want to ask how these PI tags are defined. Because future values should only be possible to record when the tags are configured for "future data", as opposed to the normal configuration of "Real-time data". Normal tags are unable to record values more than appr. 5 minutes into the future, but future tags can have both future and historical data, so I expect this might be why it was even possible to record these in the future. Are they actively using these tags to record future values?

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