[Cause]
The encoder rotation limit 4085 was exceeded.
[Countermeasure]
Reduce the gear ratio or narrow the axis range. Alternatively, before performing other operations (power-off and jogging operations) after this alarm occurs, execute the abnormal-condition recording function ("Abnormal Condition Record" in the auxiliary menu), obtain an image backup, and contact the FANUC service center. If that function cannot be used, record the conditions and operating steps leading up to the alarm, obtain an image backup, and contact the service center.