Mori Seiki CNC machines are known for their precision and durability, but operational errors—signaled by —are inevitable in a busy production environment. Unlike standard CNC control alarms (like Fanuc P/S alarms), EX codes are "External" or machine-specific alarms defined by Mori Seiki’s own Programmable Logic Controller (PLC).
General fault in the spindle drive; check the drive unit itself for a secondary error code . mori seiki ex alarm list
If the alarm does not clear, perform a standard machine power cycle (Power Off, wait 30 seconds, Power On). Mori Seiki CNC machines are known for their
are external Programmable Machine Control (PMC/PLC) error codes generated by the machine tool builder rather than the core CNC system. While standard NC alarms (like Fanuc or Mitsubishi system errors) indicate core controller faults, EX alarms explicitly signify issues with peripheral machinery, safety interlocks, hydraulics, sensors, and mechanical overloads managed by Mori Seiki's custom logic. If the alarm does not clear, perform a
: Turret indexing time-out (Turret #1 or #2). EX0456 : Spindle orientation or indexing time-up.