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RachelP
Example: I need to do an analysis on a centralized modular solar inverter.  The PI AF structure for these inverters is "Inverter\Inverter Module," where the analysis sits on the "Inverter" parent element, and the "Inverter Module" is the child element that has attributes I need to reference. Depending on the manufacturer, there are anywhere… (Show more)
Victor
Click to view contentI'm trying to build some analysis templates for an element template I created in PI system explorer. At the moment all I want to do is compute a basic calculation using attributes Variable 2 and Variable 3, which are all linked to a PI tag Calc The calculation I want to perform is Variable 4 = Variable 2 – Variable 3.     How can I fix this… (Show more)
Arti Rajagopalan
I am working on an AF Analytics calculation that requires me to loop through all the values received for a PI tag received in past 2 minutes. Depending on the data quality of the tag, the value is included/excluded in the calculation.    For example: RecordedValues('dischargeIn|value','*-2m','*') expression returns 0 or more values. I want to… (Show more)
bjohanneck
I'm familiar with using BadVal(Float('Attribute')) to return a True or False as a Numeric status.   I'm also familiar with using PrevVal or PrevEvent for various purposes, but I can't successfully nest PrevVal or PrevEvent with BadVal.   I'm looking for something like this...   PrevEvent('Attribute',BadVal(Float('Attribute')),'*')
bjohanneck
I'm building an Analysis Template and I have a PrevVal('Attribute Name','*') variable that is returning the correct Value at Evaluation, whereas I have two subsequent problematic variables: PrevVal('Attribute Name',PrevVal('Attribute Name','*')) returns No Data PrevVal('Attribute Name',PrevVal('Attribute Name',PrevVal('Attribute… (Show more)
bjohanneck
When making an analysis template - how do I specify a time to check a specific PI Value? Similar question for checking Questionable flags.   I have 30 minute data (4 to 6 different values, once every 30 minutes), and in my analysis I need to check numerous things...some of those things being values (or their Questionable flags) at the present… (Show more)
Trish
I've just completed the first class exercise where the creation of an analysis is required.  I've done the work but when I look at the attributes tab on the HOU.Press.01 element, the new attributes that were mapped from the variables in the exercise are showing as Pi Point not found.  The example shows the output of the variables.  When I right… (Show more)
tommm
I'm trying to build some analysis templates for an element template I created in PI system explorer. At the moment all I want to do is compute a basic calculation using attributes Acetylene, Ethylene and Methane, which are all linked to a PI tag. The calculation I want to perform is Variable1 = 'Acetylene' + 'Methane'.   The error message in the… (Show more)
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