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About Rotary Encoders, Absolute

Absolute rotary encoders provide a unique output for every resolvable movement or shaft rotation. They do not lose their position after power-down, but instead provide absolute position upon power-up without requiring a home cycle or any shaft rotation. Traditional absolute rotary encoders have one track per encoder bit, and provide one fixed resolution. Consequently, a 1024-position encoder has 10 tracks with 1 bit per track. Multiple transmitter-receiver sets may be arranged to provide multiple counts per line. Lines or sections of varying angular width can be combined to determine absolute angular position rather than simply an incremental move referenced to zero at power-up. 


Products & Services Related to Rotary Encoders, Absolute
Rotary Encoders, Incremental
Incremental rotary encoders are multi-turn sensors that use optical, mechanical, or magnetic index-counting for angular measurement. They contain no absolute reference, but instead count relative to the turn-on position.



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