[smyers755]

We were in the middle of running parts on our 2006 Fanuc O-T Control Femco CNC Lathe when it shut down with an AL-34 PARAMETER SETTING ABNORMAL alarm.

No one was changing any Parameters on the machine, it was running bar-feeder parts at the time and had made 150+ parts on this job before the error came up mid-cycle.

We are located in a remote area of the USA, and there's no local service people to come have a look at it.
We tried disconnecting the main power, waiting a few hours and restarting it, but as soon as the O-T Control screen comes on, the error comes up.


Any idea where to start to diagnose this error and get back to making parts?

[servtech]

We were in the middle of running parts on our 2006 Fanuc O-T Control Femco CNC Lathe when it shut down with an AL-34 PARAMETER SETTING ABNORMAL alarm.

No one was changing any Parameters on the machine, it was running bar-feeder parts at the time and had made 150+ parts on this job before the error came up mid-cycle.

We are located in a remote area of the USA, and there's no local service people to come have a look at it.
We tried disconnecting the main power, waiting a few hours and restarting it, but as soon as the O-T Control screen comes on, the error comes up.


Any idea where to start to diagnose this error and get back to making parts?

"Correct a parameter value according to FANUC AC SPINDLE MOTOR ?i series PARAMETER MANUAL (B-65280EN). If the parameter number is unknown, connect the spindle check board, and check the indicated parameter".

It appears you may have a corrupt parameter or parameters. Check spindle parameters and edit against your back up or hard copy. Set PWE = 1 to edit or you may need a programming device however.

You could try power off and hold P and Cancel during power on, making sure axis are mid position so reference return will be ok.

[smyers755]

Thanks for the information!
It was corrupt parameters in the OT Control itself, most likely due to low batteries.
I put new batteries in, found a copy of the "As-Built" parameters and hand typed them in and it's back up running!