1,997 alarms · 218 guides · 8 languages
The machine stopped.
The answer is here.
Independent CNC knowledge base: alarm troubleshooting and machining guides — searchable, or answered directly by AI.
Troubleshooting
Find the alarm, follow the fix
Step-by-step diagnostic trees for 1,997 real controller alarms.
FanucMitsubishiSiemens
SP9056 — INNER COOLING FAN STOP
Browse alarms →
AI assistant
Describe it in your own words
The assistant answers from this knowledge base — with sources cited, in your language.
“My MDS-E drive shows Alarm 50 and 52…”
Ask AI →
Guides
Learn it properly
In-depth programming and maintenance guides written for the shop floor.
G83 Deep-Hole Peck Drilling Cycle: Complete CNC Programming Guide
Read articles →
Asked by machinists
All questions →What are the fundamental differences between G00 and G01 commands in CNC programming, and what is each used for?answered→On Mitsubishi drives, I encountered alarm 3D which was resolved by increasing input power capacity. However, I also need to understand the troubleshooting steps for alarm 52 across different Mitsubishi drive models (MDS-E, MDS-C, and M70/M700/M800/M80 Series CNCs), as it has been indicated as 'Excessive Error 1' or 'Battery fault' depending on the model.answered→My Mitsubishi MDS-E drive is continuously showing Alarm 50 and Alarm 51. What are the possible causes for these alarms, and what steps should I follow to troubleshoot the issue?answered→
Made for machinists, by machinists — independent and free.
8 languagessources citedno paywall