Multiple controllers configuration management interface for system connectivity

A configuration management interface system is provided for standardizing communication between an external application and one or more hardware or emulated industrial controllers. The interface system reads one or more industrial control programs and presents available data tags defined by the control programs to a user via an interface screen. The user can select a subset of the available data tags that are to be exposed to the external application for data communication. Based on the selected data tags, controller configuration information read from the control programs, and additional configuration information provided by the user, the interface system generates a control unit file that acts as a communication bridge between the external application and the selected data tags residing on the industrial controllers. The control unit file can be used to interface the application (e.g., an industrial simulation or another type of application) with either hardware controllers or emulated controllers.