Fanuc alarm SP1999: SPINDLE CONTROL ERROR
spindle alarm (serial spindle, alpha i) · Fanuc 0i-D
What it means
A generic spindle control error occurred on the CNC side outside the more specifically classified conditions. Fanuc documentation directs recording the system configuration, operation in progress and occurrence frequency, since diagnosis depends on reproducing the exact circumstances.
Likely causes
- Internal inconsistency in CNC spindle control software state
- Interaction of PMC sequence with spindle control timing
- Latent hardware fault on the CNC spindle interface
Triage note: Collect diagnostics and contact Fanuc with occurrence details.
Need the part urgently?
Send us alarm SP1999 with your machine details — typical RFQ turnaround is 24–48h.