How do I fix and clear Mazak alarm 646?

The machining order within one unit has been reversed by the incorrect priority numbering. Change the priority numbers.

CRITICALAlarm code

646

ILLEGAL PRIORITY NUMBER (WNo., UNo., SNo.)* (LNo. 1, LNo. 2, )**

Q: What does Mazak alarm 646 mean?

Mazak alarm 646 is "ILLEGAL PRIORITY NUMBER (WNo., UNo., SNo.)* (LNo. 1, LNo. 2, )**". The priority numbering order within a unit is not correct. * During setting the priority numbers on the PROGRAM display. ** During setting the priority numbers on the PROGRAM LAYOUT display - data in the layout lines LNo. 1 and LNo. 2 are not correct. Error type: Registered Data — program or tool data error.

What it means

The priority numbering order within a unit is not correct. * During setting the priority numbers on the PROGRAM display. ** During setting the priority numbers on the PROGRAM LAYOUT display - data in the layout lines LNo. 1 and LNo. 2 are not correct.

What to do

1The machining order within one unit has been reversed by the incorrect priority numbering.
2Change the priority numbers.

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 →