Systems and methods for facilitating add-on functions for employment with an industrial device. One system includes an electronic processor configured to detect an add-on function call from a user program executing within the industrial device. The electronic processor is also configured to determine a function name of an add-on function associated with the add-on function call. The electronic processor is also configured to provide a set of operations for executing the add-on function, based at least in part on the function name of the add-on function.