Program parameter reuse

Program parameters allow you to define inputs for routines in a program, and the outputs from those routines. Program parameters also allow you to create reusable code. Unlike direct references to tags where copying and pasting the code for reuse requires updating all of the tag references, using parameters and connections requires only updating the parameter that the connection references to reuse the code.

Program parameters are also useful when you create an object definition in the

Library

explorer and do not know the direct reference. You can create a program parameter that does not yet have a connection. When you create instances of an object, you can then create a connection to the parameter.