Optical absolute single turn rotary encoder
max. 800 rpm, RS422 | FPCOA23 series Codechamp

This concept has been developed to compensate for the performance limitations of incremental encoders :

need for initialization
must be re–zeroed after a power interruption: zero reset to obtain the mechanism angular position
sensitivity to the interference

The absolute encoder supplies the shaft position as a binary code.
The output code is unique for each position. The resolution is equal to 2n (n= number of bit).
The shaft position information is given instantly when power is supplied.
Single turn absolute optical encoder –> gives the absolute angular position over 360° rotation.