In the world of DMG MORI service documentation, the term is searched thousands of times each month by engineers desperate to decode a flashing "EX 1050" or "EX 1402."
Introduction For any machinist, setup technician, or maintenance engineer running a Mori Seiki (now DMG MORI) CNC lathe or machining center, few things are as jarring as a sudden halt in production accompanied by a cryptic EX alarm on the control panel. Unlike standard CNC machine alarms (which often relate to servo overloads or program errors), EX alarms are machine manufacturer-specific. They are the machine tool builder’s way of telling you about a hardware limit, a missing input signal, or a safety violation. mori seiki ex alarm list
| Component | Check | Prevents EX Alarm(s) | | :--- | :--- | :--- | | Hydraulic breather | Replace filter | EX1402, EX1425 | | Way lube tank | Refill, check for water contamination | EX1411 | | Chip conveyor motor | Clean swarf from limit switch | EX2010, EX2011 | | Turret coupling | Clean, light oil mist | EX1506 | | Door interlock switches | Test with meter for continuity | EX1001 | The Mori Seiki EX alarm list is more than a table of codes – it is a diagnostic roadmap into the machine’s PLC logic. While no single article can list every possible EX alarm (Mori Seiki has produced hundreds of control variants over 40+ years), the codes and categories covered here represent the vast majority of daily production stoppages. In the world of DMG MORI service documentation,