GetTagValue

Syntax

GetTagValue( "strTagName", optNumRefresh )

strTagName

The name of the tag of which you want to get the value.

Note: The tag name must be enclosed in quotes, as shown in the syntax diagram, or else the project will try to get the value of the named tag.

optNumRefresh

Tag that you want to use as a trigger to refresh the function. When the value of the specified Tag changes, the function is executed again. (Normally, a function executes only when the object on which it is configured changes in some way, such as when a Pushbutton object is clicked.) To execute the function at a regular interval, you can use one of project's system tags such as Second, Minute or Hour.

Returned value

This function only returns the value of the Tag specified by strTagName. If the specified Tag does not exist, then the function returns null.

Examples