High Speed Inputs Measuring Line Speed and Length of film or paper on a production line This application shows how to measure and calculate line speed and length of rolled film moving down a production line by the number of generated pulse Motor Rotary encoders and roll diameter from a rotary encoder. The rotary encoder is connected to a rolling shaft on a film production line. Using digital outputs allows send a command High-speed inputs signal to cut a film or to send an alert to a signal tower. Rievtech Micro PLC 11