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What are the abnormal situation alarms for CNC milling machines?

Author: Site Editor     Publish Time: 2025-12-09      Origin: Site

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The alarms of CNC milling machines mainly fall into two categories: hardware and software. Hardware alarms are more common and urgent.


hardware alarms ‌ are usually directly related to mechanical and electrical components, such as:

limit alarm ‌ : such as "X/Y/Z AXIS OVERTRAVL", it is often caused by overtravel during operation or damage to the limit switch.

SPINDLE ALARM ‌ : such as "SPINDLE alarm" or "SPINDLE OVERLOAD", it may be due to motor overheating, overload or lubrication failure.

SERVO ALARM ‌ : such as "SERVO NOT READY" OR "HARD LIMIT OR SERVO ALARM", it is often related to drivers, motors or feedback systems.

Other hardware alarms ‌ : such as "LOW OIL LEVEL" (low oil level), "AIR PRESSURE DROP" (insufficient air pressure), etc.

software alarms ‌ are mostly related to system parameters, programs or control logic, such as "T CODE ERROR", "M CODE ERROR", etc.


When encountering an alarm, first check the alarm code displayed by the system and initially determine the type of fault based on the prompt information. For hardware alarms, the status of relevant components needs to be checked. For software alarms, it is necessary to verify the program or parameter Settings. If the problem cannot be solved, it is recommended to contact professional maintenance personnel.


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