Program Library Tag

Help Contents


The Program Library Tag stores user defined IEC 61131-3 Functions and IEC 61131-3 Function Blocks as a shared library.

Other Program Tags and Calculated Data Point Tags can reference shared library resources with the USE pragma directive.

The Program Library Tag is a license free tag. You can create any number of these tags without restriction.

Configuration Properties

The Program Library Tag supports the configuration properties of the Core Tag.

In addition to the IEC 61131-3 Common Elements, the Program Library Tag can reference these additional function blocks:

Tag Commands

The Program Library Tag does not support tag commands.

Relationships to Other Tag Types

The Program Library Tag builds on the features of these tag types:

Further Information

IEC 61131-3 Function

To learn about Functions you can declare in the Program Library Tag.

IEC 61131-3 Function Block

To learn about Function Blocks you can declare in the Program Library Tag.

Core Data Driver

To learn about the Core Driver.


For the meaning of terms used in Fernhill SCADA.