How do I fix and clear Mazak alarm 428?

Input allowable data only after placing the NC unit in its reset state or after changing the current mode over to another mode. Clearing procedure: Tap alarm clear button.

ALARMSMazatrol Assistant

NOTICEAlarm code

428

MEMORY PROTECT (AUTO OPERATION)

Q: What does Mazak alarm 428 mean?

Mazak alarm 428 is "MEMORY PROTECT (AUTO OPERATION)". An attempt has been made to input unallowable data on a display (such as the TOOL DATA display) during automatic operation. Error type: Operation — wrong key or incorrect operation. Machine state: Operation continued — machine still running.

What it means

An attempt has been made to input unallowable data on a display (such as the TOOL DATA display) during automatic operation.

What to do

1Input allowable data only after placing the NC unit in its reset state or after changing the current mode over to another mode.

Codebook — decoded

AError typeOperation — wrong key or incorrect operation

LStop statusOperation continued — machine still running

SClearingTap alarm clear button

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

Still stuck? Ask the Mazatrol assistant →