Value

Use the value symbol to show the value of a data item on your display. A value is the reading obtained for a data item at the end time of a display. It is shown as a number, timestamp, string, or digital state. If the data item stores a URL, then the symbol shows an active hyperlink in the display. When the underlying data updates, this symbol updates at the next update interval (default 5 seconds).

To add a value to a display, click the value symbol icon in the Symbol Gallery, and then drag a data item from the search results onto the display. You can configure the unit of measure (UOM) shown for the value. If you select a different UOM from what is stored for the value, the value is converted to that UOM for the display. For AF calculation values, select the UOM for the calculation, which can then be converted.

Note: When you create a value symbol from a data item that is in a null or shutdown state, the value symbol is darkened.

Default configuration

Administrators can set the default configuration for value symbols across all displays. For more information about display defaults, see the Default display and symbol configuration topic in the AVEVA PI Vision Installation and Administration Guide. The configuration settings which a default can be set for are:

• Style

  • Fill Color

  • Text Color

  • Font Size

  • Text Alignment

  • Value Color

• Font

  • Name

  • Size

• Visibility

  • Label

    • This includes the label type, though Custom cannot be set as the default

  • Units

  • Timestamp

  • Value