This is my first exposure to PI software. I have watched some of the applicable online tutorials. I have one simple question.
My customer has a counter that rolls over every 30,000 counts. I would like to display the number of counts in the last 12 hours. Always displaying the last 12 hours from now. This give me a moving total for the last 12 hours.
Counts Now - Counts 12 hours ago
If negitive add 30,000 to account for the rollover.
It appears ProcessBook PI Calcs is unable to grab a historical value from 12 hours ago. I see you can also use VBA macros, but I beleive it requires the historical data to be pulled from a trend, which I am not trending this value.
Can anyone point me in the right direction to perform this simple calculation. I would perfer it to be on the ProcessBook side, instead of server.
Thanks Ahead of Time,