The system is configured by building a tree structure of objects in the configurator. The view is divided in the plant configuration, and the node configuration.
The plant configuration, in the middle in the figure below, is a view of the plant, with objects for pumps, fans, motors, valves, sensors and switches. There are also Plc programs that contain code to control the plant.
The node configuration, to the right, is a view of the hardware and software configuration of the process or operator station, with objects for I/O devices and system programs.