What does Mazak alarm 21 mean?

Mazak alarm 21 is "SYSTEM ERROR". Software of this system has become abnormal. Error type: NC Equipment — system hardware/software error. Machine state: Emergency stop — machine fully stopped.

How do I fix and clear Mazak alarm 21?

Contact the nearest Mazak Technical Center or Technology Center. Clearing procedure: Power OFF → fix cause → Power ON.

ALARMSMazatrol Assistant

CRITICALAlarm code

SYSTEM ERROR

What it means

Software of this system has become abnormal.

What to do

1Contact the nearest Mazak Technical Center or Technology Center.

Codebook — decoded

EError typeNC Equipment — system hardware/software error

HStop statusEmergency stop — machine fully stopped

MClearingPower OFF → fix cause → Power ON

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

Still stuck? Ask the Mazatrol assistant →