How to identify the direction by rotary encoder！

How to identify the direction by rotary encoder
    

A new generation of rotary encoder can achieve universal higher energy efficiency, reliability, and other electrical equipment, its innovative design can be widely applied to transportation technology requirements, applications include automobile manufacturing, food and beverage, logistics and warehousing circuits and other industries.

Rotary encoder applications in the circuit, mainly the encoder pulse recognition using microcontrollers. Specifically is to see A, B phase, A or B lead lag to determine the encoder is forward or reverse, which is called by the application direction of the rotary encoder identification circuit.

The rotary encoder is how to identify the direction of the circuit? First, the PLC counter direction recognition. PLC in the high-speed counter can be set to various modes, including AB quadrature pulse can be increased according to the latter to reduce the digital counter to determine the direction, there are some PLC instruction judge speed, direct judgment reversing! This can be judged from the hardware on up.

Also need only choose the right mode A, B phase quadrature mode can be! A phase proved to be 90 degrees ahead of phase B when HC0 current value increases to determine the encoder is forward or reverse, and to determine the number of pulses recorded by coding revolutions how many laps.

The rotary encoder is used to measure the speed of the device, optical rotary encoders by photoelectric conversion, can convert the output shaft angular displacement, angular velocity and other mechanical quantity into corresponding electrical pulses to the digital output (REP), small size and weight light, variety, full-featured, high frequency response, high resolving power, torque is small, low power consumption, stable performance, by many users of all ages.

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