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Any way to access attribute data from an Event Frame to an Element Attribute?

MarcusHultgren

Hello,

 

I have data that is generated as attributes to Event Frames through and EMDVB interface (DeltaV connection) that I would like to make available for users inside PI Vision in a clear way. In System Explorer I can do an Attribute search and get a list of the data I am interested in - but I seem unable to import that data into an Element Attribute through reference.

 

My optimal solution would be if a could make a element attribute that was updated everything a new Event Frame that contains the data I am looking for was created.

 

Is this possible ?

 

Regards,

 

Marcus

  • 0

    Hi Marcus

     

    The "normal" way to map data and use it in an Event Frame would be to:

    1. Create AF Element
    2. Map data into AF Attributes
    3. Create Event Frame and reference your element of interest
    4. Add EF Attribute and link it to the attribute from the primary referenced element

    In this case, the data always exists in the AF Element and the Event Frame looks up the data from the element, in the context of the time window for the EF.

     

    In your case, you start off with the Event Frame and have data stored inside the EF. By doing it this way, there's no obvious way to move data into elements/attributes.

     

    I've never used the EMDVB interface so I can't answer anything about that, but I would ask if you think you could integrate the DeltaV data into AF in a different way? I.e. to associate equipment with AF Elements, and data streams with AF Attributes

  • 0

    I got the same question, some attributes in the Event Frame each Procedure/Operation/Phase which come from EMDVB interface, want to access them to map to Element attributes, so can be used in analysis and PI Vision easily.

    Appreciated for advice.