Maintenance triage

CNC Alarm Category Table

Triage CNC alarms by category before reset, recovery, service dispatch, or downtime-cost review.

Direct answer: CNC alarms should be triaged by safety, servo, spindle, tool, coolant, program, and communication category before reset. Follow the builder manual and site lockout process.

Maintenance triage

CNC Alarm Category Table

Alarm-category triage table for separating safety, servo, spindle, tool, coolant, program, and communication issues before reset.

Source: Created from the 2026-06-24 error-code and maintenance support opportunity; always follow the control builder manual and site lockout procedure.Updated: 2026-06-24

Alarm category	Likely system	First triage step	Do not reset until
Safety / E-stop	Door, interlock, E-stop, safety relay	Verify people, guarding, and machine state.	The unsafe condition is physically cleared.
Servo / axis	Drive, encoder, following error, overtravel	Check axis position, obstruction, and drive message.	Root cause is understood and travel is safe.
Spindle	Drive, orientation, overload, chiller, lubrication	Check load, tool, coolant/chiller, and spindle status.	Thermal or overload condition is cleared.
Tool / ATC	Magazine, arm, tool pot, tool clamp	Confirm tool location, clamp state, and recovery procedure.	Manual recovery procedure is complete.
Coolant / hydraulic / lube	Pump, pressure switch, tank, way lube	Check fluid level, filter, pressure, and leaks.	Pressure and lubrication are restored.
Program / macro	Code, offset, macro variable, subprogram	Review recent edit, modal state, and line number.	The program path and offset state are verified.
Communication / control	Network, I/O, HMI, PLC, memory	Check cable, network, file transfer, or PLC message.	Backup and control status are stable.