Bargraph displays have the great advantage of being able to display a current situation and its tendency even at great distances. On the optional ACTUAL display, the exact value can be read off as required. Bargraph displays with switching output offer as multicolor types also a color display of the current process situation. The switching points can be easily adjusted via the keypad while the process is running, on the front. Different front scale divisions are possible and can be adapted to customer-specific requirements.