Fanuc alarm SP9077: AXIS NUMBER MISMATCH
spindle alarm (serial spindle safety monitoring) · Fanuc 0i-D
What it means
The spindle axis number held by the amplifier disagrees with the number the CNC expects for it. Under Dual Check Safety each monitored spindle must be uniquely identified across both channels; a mismatch means configuration data diverged.
Likely causes
- Amplifier swapped without updating axis-number assignment
- Safety-related configuration changed on only one monitoring channel
- Corrupted identification data in the amplifier
Need the part urgently?
Send us alarm SP9077 with your machine details — typical RFQ turnaround is 24–48h.