What should you do when the alarm "ALARM:4107 OUT OF RANGE (ABSO DATA)" is provided?

• A. You should recalibrate the encoder
• B. You should power cycle the system
• C. You should reset the controller
• D. You should check Second Home Position

Answer: (D)

ALARM 4107 OUT OF RANGE (ABSO DATA) means the absolute position data stored for the axis is invalid or outside the expected range. The controller uses absolute encoder data to know the true position after power-up, and when that data is corrupted or lost, it can’t reliably interpret moves, triggering this alarm.

The correct remedy is to reestablish a known reference by performing the Second Home Position. This process redefines the axis’ absolute reference from a defined point, refreshing the ABS data in the controller so it can again translate encoder counts into real positions. After completing this procedure, the alarm should clear and normal operation can resume.

Power cycling or resetting the controller may not fix the underlying issue with the absolute data, and while encoder recalibration can be related, the standard fix for this alarm is to perform the Second Home Position to refresh the absolute data.