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I'm trying to apply a filter expression to a compressed data query in PI DataLink that returns the values of a digital state tag as their respective numbers (ranging 1-4).

Are you doing this purely from Datalink? Don't use Archive Value but instead use Compressed Data with "number of values" set to 1 backwards in time. Then you can keep the same filter …

I would like to calculate with PI-Analysis a TagTot as event-weighed and including a filter expression. I'm able to do it in PI-DataLink.

Hi all, using PI Datalink I am trying to check if a sequence of steps was successfully processed. Basically it the sequence looks like this: 0, 5, 10, 20, ... , 300. Right now I am using Datalink -> …

Hello, I am trying to return a daily total of flow through a control valve. I am filtering the data based on 2 things, 1) the valve output must be greater than 0% (meaning the valve is …

Filter expressions are used to filter the data retrieve by a DataLink function. For example Compressed Data for sinusoid from Y to T with a filter expression of 'sinusoid'>60 would return …

The relevant options in this case are: fstExpRecordedValues (supported by all PI server versions): Sampling / evaluation is done based on the actual times of all tag values in the filter …

In order to facilitate using filter expressions is there any way to link cells inside a filter equations.

The syntax and examples are then provided in our Steam Functions Reference, and can be included in an Expression within a PI DataLink request for Archived, Sampled, Timed, …