How do I fix and clear Mazak alarm 901?

Set the tool diameter offset cancellation command (G40) before the fixed-cycle command.

CRITICALAlarm code

901

INCORRECT FIXED CYCLE COMMAND (WNo., NNo., BNo.)

Q: What does Mazak alarm 901 mean?

Mazak alarm 901 is "INCORRECT FIXED CYCLE COMMAND (WNo., NNo., BNo.)". The fixed-cycle command has been set in the program during the tool diameter offset (G41 or G42) modal status. Error type: Registered Data — program or tool data error.

What it means

The fixed-cycle command has been set in the program during the tool diameter offset (G41 or G42) modal status.

What to do

1Set the tool diameter offset cancellation command (G40) before the fixed-cycle command.

Codebook — decoded

BError typeRegistered Data — program or tool data error

I (L)Stop statusunspecified

O (S)Clearingunspecified

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

Still stuck? Ask the Mazatrol assistant →