How do I fix and clear Mazak alarm 841?

Check the program and register the necessary tools on the TOOL DATA display.

CRITICALAlarm code

841

DESIGNATED TOOL NOT FOUND (WNo., NNo., BNo.)

Q: What does Mazak alarm 841 mean?

Mazak alarm 841 is "DESIGNATED TOOL NOT FOUND (WNo., NNo., BNo.)". The tools that are not yet registered on the TOOL DATA display are specified using T-code command in an EIA/ISO program. Error type: Registered Data — program or tool data error.

What it means

The tools that are not yet registered on the TOOL DATA display are specified using T-code command in an EIA/ISO program.

What to do

1Check the program and register the necessary tools on the TOOL DATA display.

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 →