Abstract: An electronic functional module for control electronics of a centrifugal pump assembly has a functional unit that adds an additional function to the control electronics, and the control electronics has operating software with a graphical user interface for settings of the centrifugal pump assembly whose appearance is defined by image frame data. The functional module transmits values of attributes that describe properties of at least one variable of the functional unit to the control electronics, and the control electronics generates, as a function of the attribute values using the image frame data and according to a set of rules, screen views that are independent of the operating software and that supplement the user interface at least temporarily. These screen views, including a value of the variable integrated into one of the screen views, are shown on a display.