Fanuc alarm 34: Parameter data out of allowable range
αi SPM · Fanuc αi SPM
What it means
A spindle parameter outside its specifiable range is set in the CNC driving the αi SPM. With a spindle check board attached, the display alternates 'AL-34' and 'F-xxx', where F-xxx identifies the offending parameter number.
Likely causes
- Out-of-range spindle parameter after edit or restore
- Parameters loaded from incompatible machine/amplifier
Triage note: Software issue only; no hardware replacement warranted.
Need the part urgently?
Send us alarm 34 with your machine details — typical RFQ turnaround is 24–48h.