APR Behavior for IncrementalEncoders

APR for incremental encoders means Absolute Machine Reference Position Retention. When an incremental encoder is homed the homed bit is set.

When any of the events and/or conditions that generate an APR fault for an absolute encoder occurs on for an incremental encoder then an APR fault is generated and the axis home bit is cleared.

For example, the behavior of APR faults for an incremental encoder is identical to that of an absolute encoder except when an incremental encoder is power cycled, and its position comes up as 0. Its Absolute Machine Reference Position is lost. An APR fault is not generated.