ALLEN BRADLEY 847H-JL2C-RE01024 encoder

Encoders are devices that encode signals (such as bitstreams) or data and convert them into signals that can be used for communication, transmission, and storage. Encoders convert angular or linear displacements into electrical signals, the former called a dial and the latter called a yardstick. According to the reading mode encoder can be divided into contact type and non-contact type two; According to the working principle, encoders can be divided into incremental type and absolute type. Incremental encoders convert the displacement into periodic electrical signals, which are then converted into counting pulses. The number of pulses represents the displacement. Each position of the absolute encoder corresponds to a certain digital code, so its indication value is only related to the start and end of the measurement, and has nothing to do with the middle process of measurement