Fanuc alarm SP1970: SPINDLE CONTROL ERROR
spindle alarm (serial spindle, alpha i) · Fanuc 0i-D
What it means
Spindle initialization on the CNC side did not complete. During power-up the CNC performs a structured bring-up of the serial spindle interface; failure to finish indicates the amplifier never reached the expected ready state or the handshake stalled partway.
Likely causes
- Serial spindle link not established (cable, power sequencing, amplifier off)
- Amplifier held in its own alarm state during CNC boot
- CNC-side spindle control hardware fault
Triage note: Power-cycle CNC and spindle amplifiers together; escalate to Fanuc if persistent.
Need the part urgently?
Send us alarm SP1970 with your machine details — typical RFQ turnaround is 24–48h.