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Is there a way to get PI tags to refresh with current data?

bknowles

Excuse the potential ignorance of this question, I am very new to this system. We had an instance where the Data Archive lost connection to its source. As a result, our PI vision dashboard is displaying incorrect information. The tags will read correctly as soon as a new value is pushed, as some of them already are. But many of them don't update for a couple of days leaving the dashboard incorrect for some time. Is there a way to ask PI to pull this information to update all the tags to current values?

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    I hope I understand the situation properly. There is a buffered source at one end and a PIV display at the other. After times where the connection from the buffer to the DA is lost, the PIV does not update for a long time?

     

    This is expected behaviour because it takes a certain amount of time for the buffer at the source to be cleared into the DA. This is a process which happens in chronologic/FIFO order, so until all the old data are in the DA the new ones won't get pushed to the DA, and thence to PIV.

     

    PIV should be updating during the process. As new values from the buffer enter the snapshot they will be displayed in PIV. Depending on the duration of the outage and the performance of the link from the buffer to the DA this may take a long time and your users may well report that the PIV is not updating at all.