Allen-Bradley ControlLogix - APR Fault Examples

Behavior models used in CIP Motion
Chapter 2
Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018 47
• Travel Mode
Care must be taken when changing these values that the new values are rightly
related to the Position Unit of the product and the mechanics of the system. This
is typically done as part of a product recipe change.
If the Axis Homed status bit is clear, indicating that position has not been
absolutely referenced to the machine, the APR function is bypassed and there is no
attempt to restore absolute position.
See also
APR Fault Attributes on page 279
APR Fault Examples on page 47
Scaling
Changing the Scaling parameters can potentially generate an APR fault because
internal constants computed from these two parameters may generate a motion
resolution change. If this happens, an APR fault is generated.
APR Fault Examples