Fanuc alarm 198: SOFTWARE SYSTEM ERROR
30i/31i/32i system alarm · Fanuc 30i/31i/32i-B
What it means
Internal self-checks found a contradiction or abnormality in CNC system software processing. It is a generic catch-all for software-detected inconsistencies that do not map to a specific hardware test. Record the system alarm log and the PCB named on the third line before replacing anything.
Likely causes
- Internal software inconsistency triggered by corrupted data
- Failing memory or CPU board hardware
- Rare firmware bugs - compare ROM/FROM contents with a healthy control
Need the part urgently?
Send us alarm 198 with your machine details — typical RFQ turnaround is 24–48h.