Magnetic incremental encoders and magnetoelectric absolute encoders:！

 BEN encoders are able to memorize the absolute position, angle encoder and number of turns of the device. That is, once the position, angle and the number of turns fixed, when the encoder shows the value of the only fixed, including power after the power. Incremental encoder can not do this, the general incremental encoder output two A, B pulse signal, and a Z (L) zero-bit signal, A, B pulse 90 degree phase difference angle, through the pulse count You can know the position, angle and the number of turns is increasing, by A, B pulse signal ahead or lag can know the forward and reverse, after power failure, you must start from the agreed benchmark count. Incremental encoders need to be reprocessed when measuring the position, angle and number of turns, and re-energized to do the "zeroing" operation. Therefore, although incremental encoders are less expensive than absolute encoders, With the increasing degree of automation in China, the absolute encoder is bound to gradually replace the incremental encoder, as well as the technical characteristics of magnetic encoder reasons, the cost to gradually close to incremental encoders.

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