Requests an immediate refresh of data using the Refresh Tag Command.
The TagRefresh Function is intended for use in an Operator Action. Operator Actions run in response to user input gestures in the Operator Interface. In an Operator Action, code execution is suspended until the function completes.
If you want to refresh the value of a tag from a Program Tag, running on the SCADA Server, use the TagRefreshFB Function Block.
Informal Syntax:
TagRefresh( TagName )
Formal Syntax:
TagRefresh( TagName:=Expression )
| Parameter | Type | Description |
|---|---|---|
| TagName | ANY_STRING | The full name of the tag. |
The TagRefresh Function sends the Refresh Tag Command to the database tag.
None.
To learn about the Refresh Tag Command.
To learn how to refresh a tag from a Program Tag.
To learn where you can use this function.
To learn about calling a function from IEC 61131-3 structured text.
To learn about the different types of expression to use as function parameters.
For the meaning of terms used in Fernhill SCADA.