What does Mazak alarm 422 mean?

Mazak alarm 422 is "MEMORY PROTECT (I/O BUSY)". An attempt has been made to edit or input the machining program, tool data, etc. during I/O operation. Error type: Operation — wrong key or incorrect operation. Machine state: Operation continued — machine still running.

How do I fix and clear Mazak alarm 422?

Wait until the I/O operation is completed, and then repeat the editing or input operation from the beginning. Clearing procedure: Tap alarm clear button.

ALARMSMazatrol Assistant

NOTICEAlarm code

422

MEMORY PROTECT (I/O BUSY)

What it means

An attempt has been made to edit or input the machining program, tool data, etc. during I/O operation.

What to do

1Wait until the I/O operation is completed, and then repeat the editing or input operation from the beginning.

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 →