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Re: Pump running time
gmichaud-verreault
Oct 24, 2017 12:26 PM
Hi Igor,
KB01100 - How to use a PI ProcessBook display to show the total time(seconds) that a tag was equal to a specific state or value, within a time range should answer your question.
The first parameter is the tag, second and third the time period, and the last parameter is the value to compare against.
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Gabriel
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Re: Pump running time
I tried this but something is wrong (Calc Failed):
TimeEq('TRIGGER_TEST.MDE', PrevEvent('TRIGGER_TEST.MDE', "STOP"), '*', "RUN")/3600
When TRIGGER_TEST.MDE go to 'RUN' starts counting time, so I need time period from last 'STOP' to now '*' and until 'RUN' will be changed to 'STOP'.
Thanks,
Igor
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Re: Pump running time
gmichaud-verreault
Oct 24, 2017 5:50 PM
You will need to have two counters, one for runtime and for Stop-time
Here is how I built my totalizer for runtime - note that I created mine for the random tag BA:ACTIVE.1 which has two states Active and Inactive:
This totalizer will calculate the runtime and write the final value (and reset to 0) when the status does not equal "Active"
Note that I am not using double-quotes around my status because it is a digital state. If it were a string tag, then you would need the double quotes.
Gabriel
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