I want to configure a point (as a String type) and then have a fixed value as 'Asset1'. How do I configure this in PI server?
When ever I need a fixed value tag, I create a Performance Equation tag and just input the value I need in the equation input box.
In your case, the equation would be 'Asset1'. I usually have my dummy_tag PE just be 0, or 'sinusoid'-'sinusoid' which always returns 0.
Doesn't matter how often you schedule it to run!
I have mine scheduled to run once per hour, but that's because I often edit the archive values to display different values when I develop and debug in MS Visual Studio.
This works perfectly. Thank you.
You can also create a point with 'L' point source and manually assign your fixed value via SMT (Archive Editor or Record Values). This is (as I think) more sophisticaed as dummy calculation.
I would definitely go with Sergey's suggestion to create a "Lab" point (Point Source = L) and assign it a fixed value. That way you don't get the Performance Equations (PE) scheduler to load those fixed value points and spend CPU time on them.
I agree. My "fixed" values often need changing - so it's comfortable to let the PE Scheduler reset it for me.
But if CPU time is of that much importance, maybe it's overkill to spend an entire tag for this static value as well? If so, I'd recommend storing your static string value either in the Module Database or in AF.
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