Writes a value to a tag using the WriteValue Tag Command.
The TagWriteValue 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 write a value from a Program Tag, running on the SCADA Server, use the TagWriteValueFB Function Block.
Informal Syntax:
TagWriteValue( TagName, Value )
Formal Syntax:
TagWriteValue(
TagName:=Expression,
Value:=Expression )
| Parameter | Type | Description |
|---|---|---|
| TagName | ANY_STRING | The full name of the tag. |
| Value | ANY | The value to write to the tag. |
The TagWriteValue Function sends the WriteValue Tag Command to the database tag.
None.
Sends the WriteValue Tag Command to the tag "Storage.StartPump" with the value TRUE.
TagWriteValue( "Storage.StartPump", TRUE );
To learn about the WriteValue Tag Command.
TagWriteValueFB Function Block
To learn how to write a value to 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.