Even if you don’t have the full list, their remote diagnostic can pull the exact ladder rung causing the EX alarm.
On Mori Seiki machines (typically using MAPPS interfaces or Fanuc controls), refer to External (PLC) Alarms . These are generated by the machine tool builder rather than the CNC control itself, usually relating to peripheral hardware like the chip conveyor, tool changer, or coolant system. Common Mori Seiki EX Alarm Categories