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Historians: Write Metadata

This article describes a starter solution related to writing metadata to AVEVA PI System Asset Framework.

What Does This Article Cover?

When writing data to a historian, it might be necessary to create metadata.  For example, an Intelligence Hub data pipeline solution can create an Asset in the AVEVA PI System Asset Framework.  This article provides a starter solution for this scenario.  

Design considerations 

These considerations pertain to writing metadata to the AVEVA PI System Asset Framework. 

  • Use the Intelligence Hub PI Connection Asset Type Output.  This Output provides the ability to create Asset Framework Assets, Asset Framework attributes, and PI Points, and update PI Point values.
    • Asset hierarchy and assets can be created using the Path and Asset fields and the Create radio button switched to "on".
    • An asset can be created based on an existing Asset Framework template using the _model attribute to match an existing template name.  
    • Payload attributes that are not filtered out of the payload using the attribute filter will become attributes in the PI System.  
    • The syntax of the PI Point is determined by Intelligence Hub.  
    • Consider the Update Options and how the Data Archive should be updated for the respective use case.​
  • The duration to create a PI Point is longer than the duration to add a new value to the Data Archive, so consider this when creating PI Points.

A project file may be downloaded [here].

Navigate to the interactive demonstration [here].

 

 

Summary

Please utilize the considerations provided in this article as you implement an Intelligence Hub solution.