Last updated: 2025-10-01. Compatible with MAPPS IV, MAPPS V, and Celos 5.x. For Fanuc 31i-based Mori machines, EX alarms may appear as “USER ALARM” followed by a number – refer to the separate Fanuc PMC manual.
Leave your machine model and full EX message in the comments below, or consult your local DMG Mori technical support with the 4-digit code and alarm text exactly as shown on the screen.
When a sensor fails to activate within a set time, or a hydraulic pressure switch remains open, the PLC triggers an EX alarm.
Attempting to start the cycle while the chuck is not clamped. DOOR NOT CLOSED The front door is open during a cycle start command. DOOR LOCK TIME OVER mori seiki ex alarm list
The spindle cannot start because the sensors do not detect that the chuck is safely clamped onto a part (or safely unclamped during automated bar feeding).
– The turret attempted to move without a command; check the output driver or clamp signal. Need Turret Zero-Return
Alarm: 7010 / AIR SUPPLY LOW
Check for mechanical tool interference or heavy weight imbalances on the turret. Check the turret clamp/unclamp proximity sensors located inside the turret housing sheet metal. Verify hydraulic pressure to the turret clamping mechanism.
The Mori Seiki EX alarm list typically consists of a series of alphanumeric codes, each corresponding to a specific alarm message. The list is organized into categories, such as:
The main coolant tank volume has dropped below the float switch level. Last updated: 2025-10-01
The turret took too long to rotate to the next tool station or failed to hydraulically re-seat and clamp back down tightly onto the curvic coupling.
The tailstock body or quill is not in the correct position for machining, or the forward pressure switch wasn't satisfied when pressing against the part center.