Function extension: As of firmware version 18.00.00, the 8400 TopLine can follow a setpoint modulo position (saw-tooth). With firmware version 20.00.00, the evaluation function for touch-probe signals has been extended. In the attached document you will find a detailed description of the complete function. Contained in which products? The function is contained in all 8400 TopLine devices from version 20.00.00. Application: Position follower for setpoint modulo position.