The fouction of rotary encoder in PLC.！

Encoder generally used in the general motor shaft rotation angle acquisition, servo motor encoder  and stepper motor has its own signal feedback generally do not need to install the encoder, the rotor inside the encoder through the number of dark engraved lines To output the number of pulse signal, the accuracy of choice is the number of encoder resolution, the higher the angle record the more accurate, AB output also has A + B + AB- output, the two signal lines connected to the PLC input High-speed counting input terminals, are generally the first few points of PLC input, the program control is to find a manual with a high-speed counter to receive the signal, by calculating the motor you want to rotate the number of turns and then to control the motor start to stop The motor is precisely positioned on the linear or turntable angle.

absolute encoder, incremental encoder,

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