In this video we go through how a rotary incremental encoder works, what it means to quadrature count, how counters determine direction, and go through an exercise to program a high speed counter in ladder logic to better understand how these high speed counters work. Items used in this video: PLC Tools Encoder Simulator https://controls.tw/yt-servo-encoder-simulators Allen Bradley Micro850 PLC Trainer https://controls.tw/yt-plc-trainers The above links make these videos possible. Please use them! Support these videos while you advance your skills https://controls.tw/yt-courses