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. 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.
Introduction: Why the EX Alarm List Matters Mori Seiki (now known as DMG Mori) is synonymous with high-precision, reliable CNC lathes, milling machines, and multi-tasking machining centers. However, even the most robust machines encounter errors. Among the various alarm groups (e.g., NC alarms, servo alarms, PLC alarms), the EX series alarms (External User Alarms) are the most common—and often the most misunderstood. mori seiki ex alarm list
Keep a printed EX alarm quick-reference sheet near your machine’s electrical cabinet. Train every operator to differentiate between an EX alarm (usually a recoverable condition) and an NC alarm (requires deeper technical intervention). And finally, use historical EX alarm data to drive predictive maintenance—because the best downtime is the one that never happens. Leave your machine model and full EX message
If you have ever seen a red banner flashing or "EX1011 CHIP CONVEYOR STOP" on your MAPPS or Celos control, you have encountered an EX alarm. Unlike fatal system errors, EX alarms are typically user-defined or sensor-based signals that stop the machine to prevent damage or ensure safe operation. For Fanuc 31i-based Mori machines, EX alarms may