Understand configuration of data references

You can configure an attribute or attribute template to obtain a value from a specified source. This configuration is called a data reference. Attributes that include them are called data reference attributes. You create a data reference for the following sources:

• PI point

  Produces a value from a PI point, or the summary, or other operation on the point value, depending on how you configure it.

• PI point array

  Produces a single value from an array of PI points.

• Formula

  Produces a value from a calculation result. The calculation itself can include attributes, as well as other data reference attributes.

• String builder

  Produces a string value from text-manipulation functions and substitution parameters.

• Table lookup

  Produces a value from:

  • Internal table

  • Imported value from an external (non-PI) table

  • Linked value in an external table

• URI builder

  Produces a dynamic link for attributes from attribute values and substitution parameters. You can use the attribute in a notification or in a client application, such as AVEVA PI Vision.