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Description
 Returns the value of the tag at the path specified. Normally, you'd use the expression language's built-in bound-value syntax to use a tag value in an expression. What makes this function useful is that the path itself can be the result of an expression, meaning it can be dynamic.
Syntax
 tag(tagPath)
Examples
tag("Tanks/Tank5") //returns Tank5's value.
tag("Tanks/Tank" + {Root Container.TankNum}) //returns the value for the tank represented by the dynamic property TankNum on the Root Container.
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1 Comment

  1. Anonymous

    Can you use this function to directly address a device's tag or data point?  Like with modbus for example.  Something like tag('[MODBUS_DEVICE]1.IRI200')....I've tried a few different ways (with OPC server path etc.), but no dice so far...