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Retrieve non-interpolated data through PI SDK

Question asked by mvisconte on Sep 20, 2016
Latest reply on Sep 21, 2016 by mvisconte

Dear all,

I come to you with what is (I think) a very simple question, but I can't seem to find out how to do it.

I am a read-only user on a PI server, and I'd like to retrieve non-interpolated data from this server. (ie. between begin and end, every hour, the last actual value that was in the system at that time)

 

The point in question is NOT set to step.

 

So far, I have come up with:

If oSDK Is Nothing Then oSDK = New PISDK.PISDK

Dim oPoint = oSDK.GetPoint("\\" + srv + "\" + tag)

Dim oData = oPoint.Data.RecordedValues(temp_begin, temp_end, PISDK.BoundaryTypeConstants.btOutside)

 

But that would only give me interpolated values.

 

I have tried as well

Dim oData = oPoint.Data.TimedValues(aTime)

 

with aTime an array of PITimes, but this still gives me interpolated values.

 

I could do a loop or ArcValue, but I assume that would take forever.

 

Is there a method in the SDK that would allow me to achieve this?

 

Thanks a lot,

Maxime Visconte

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