AnsweredAssumed Answered

getting values from system explorer in .net

Question asked by benny on Apr 9, 2018
Latest reply on Apr 9, 2018 by rdavin

I'm retrieving data from PI in vb.net using the AFSDK. Recently I'm started to use the AF and made a lot of attributes in my elements. Some of them are based on PI database tags some are made by formula in the attributes. For instance a lookup table.

 

I'm using this snippet to get the data from the AF.

 

 

Works great. PiAFelementPAth is the long path like you use in de AF framework to identify a tag. "E" finally gets all the values,timestamps and flags from the desired tag. However this only works when the tag is based on a PI database tag. If the tag is e.g. based on a lookup table or other formula then the "findobject" returns nothing. I realize that "tag" in this sample is probably the underlying tag from the element but in the case of a formula it does not have a tag.

Is there a way to get data from attributes from elements that are based on not-tags? A snippet a code would be very appreciated.

 

 

 

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