What Is an Encoder? | Encoder Working Principle Explained Simply (PLC & Automation) An encoder is a sensor used to measure position, speed, and direction of a rotating shaft. It converts mechanical motion into electrical signals. Encoders are widely used in PLCs, CNC machines, motors, and robotics. There are mainly two types: incremental and absolute encoders. This video explains encoder working in simple language with practical examples. #Encoder #EncoderWorking #IncrementalEncoder #AbsoluteEnc