How do I fix and clear Mazak alarm 739?

Change either the thread height or the setting of parameter TC78.

CRITICALAlarm code

739

ILLEGAL FINISHING ALLOWANCE (WNo., UNo., SNo.)

Q: What does Mazak alarm 739 mean?

Mazak alarm 739 is "ILLEGAL FINISHING ALLOWANCE (WNo., UNo., SNo.)". In the #0, #D type of THREAD unit data, the following condition exists: (Finishing allowance) > (First depth-of-cut/4) Calculated from the height (HGT) and the number of times (NUMBER) in unit data. Specified by parameter TC78. Error type: Registered Data — program or tool data error.

What it means

In the #0, #D type of THREAD unit data, the following condition exists: (Finishing allowance) > (First depth-of-cut/4) Calculated from the height (HGT) and the number of times (NUMBER) in unit data. Specified by parameter TC78.

What to do

1Change either the thread height or the setting of parameter TC78.

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 →