SP9077
MISSMATCH THE RESULTS OF AXIS NUMBER CHECK
Fanuc · Alpha i Series Servo Amplifier
What does SP9077 mean?
The spindle detected a mismatch between the CNC result of the axis number check and the spindle's own result. This indicates a configuration inconsistency regarding axis numbering between the CNC and spindle, which can lead to incorrect axis control.
Common Causes
- The number of axes reported by a component does not match the expected count.
- Mismatch in axis configuration between the main controller and an expansion module.
- Faulty axis detection circuit.
- Incorrect addressing of axis modules.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Replace the SPM control printed-circuit board.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fanuc Alpha i Series Servo Amplifier