Mori Seiki — Ex Alarm List Portable

Mori Seiki CNC machines are famous for their reliability and precision. However, when an EX alarm appears on your MSG or MAPPS control panel, production grinds to a halt. Unlike NC alarms (which relate to core Fanuc or Mitsubishi control system faults), EX alarms are external system alarms defined by Mori Seiki. They signal issues with the machine's peripheral hardware, safety switches, fluid levels, and mechanical systems.

Based on decades of field service reports, the following EX alarms represent over 80% of service calls. This curated list is a practical starting point before you open the full service manual. mori seiki ex alarm list

Look up the specific X-address (Inputs) or Y-address (Outputs) related to the faulted component in your Mori Seiki Electrical Schematic Manual. Mori Seiki CNC machines are famous for their

You will need your machine's serial number. Once logged in, go to: Documentation → Electrical Diagrams → Alarm List (PLC Messages) . The EX list is usually in Appendix B of the maintenance manual. They signal issues with the machine's peripheral hardware,

The chip conveyor belt is jammed, causing the motor thermal relay to trip.