What does Mazak alarm 397 mean?

Mazak alarm 397 is "OPERATING SWITCH FAULT". A switch on the operating panel is faulty. Or a switch is held down by some external force. Error type: Machine (PLC) — machine failure. Machine state: Emergency stop — machine fully stopped.

How do I fix and clear Mazak alarm 397?

Check if the switch is held down by something. Clearing procedure: Fix cause → Power OFF → Power ON.

ALARMSMazatrol Assistant

CRITICALAlarm code

397

OPERATING SWITCH FAULT

What it means

A switch on the operating panel is faulty. Or a switch is held down by some external force.

What to do

1Check if the switch is held down by something.

Codebook — decoded

FError typeMachine (PLC) — machine failure

HStop statusEmergency stop — machine fully stopped

NClearingFix cause → Power OFF → Power ON

Still faulted after these steps? Do not restart under load — ask the Mazatrol assistant.

Still stuck? Ask the Mazatrol assistant →