The output signals of incremental rotary encoders！

The output signals of incremental rotary encoders
incorporate two channels to indicate rotation of the
encoder shaft plus a zero marker pulse channel.
These A and B channels (quadrature) are defined as
pulses per revolution (ppr) and define the smallest
rotational angular position of the shaft that can be
resolved. Since these signals are in quadrature
mode, 90-degree phase shift relative to each other,
they can also be used to determine the direction of
the encoder shaft. The zero marker pulse channel, Z
or 0, is a once-per-revolution pulse that can be used
to indicate a zero or home position relative to a single
revolution of the encoder.

Previous：How to select, apply and integrate the right encoder for your industrial automation application.
Next：What is Singleturn and multiturn