Device (10, 20, 30, 40) for treating containers (2) with a transport device (50) which transports the containers (2) to be treated along a predetermined transport path (TR) and with at least one treatment device (17, 18, 26, 27, 36, 37, 38, 39, 162) which is suitable and intended to treat a container (2) in a predetermined manner, wherein the device (1) has a movement device (14, 24, 34, 54, 64, 161), and this movement device has at least one first guide
cam (14, 24, 34, 54, 64), as well as at least one guide roller (161) which is suitable and intended to roll relative to the guide
cam (14, 24, 34, 54, 64), and wherein the device (1) further has a detection device (15, 65) which is suitable and intended to
record at least one measurement value which is relevant for a running characteristic of the guide roller (161) relative to the guide curve (14, 24, 34, 54,64) is characterized in that the device (1) has an evaluation unit (100) which is suitable and intended to evaluate this measured value taking into account at least one further operating value characteristic of the operation of the device.