Omron C200H-MC221 Operation Manual page 270

Additional Origin Search Patterns
Reverse-mode Origin Searches 12
These origin searches are performed with an origin proximity switch and the initial search direction set to CW.
Limit switches
Origin proximity
switch
Z-phase signal
Speed
Error (No origin proximity signal)
Error (No origin proximity signal)
The following error can occur if the CCW limit switch is ON for a short time and the CCW limit switch signal is close
to the origin proximity signal.
Limit switches
Origin proximity
switch
Z-phase signal
Speed
250
CCW
CCW
CW
Error (No origin proximity signal)
Error (No origin proximity signal)
CW
Error (Overtravel reverse error)
Appendix B