Fanuc 15M - Feedrate Override Knob Disabled?

[ktmrider]

I have a Niigata HN80C with a Fanuc 15M controller. It appears the feedrate override switch is disabled in the controller. The controller is seeing the switch change and the binary numbers are changing in the controller but the feed rate is not changing during a program. Does anybody know how the feedrate override can be disabled and more importantly how it can be turned back on? Thanks.

[cncserveng]

There is an M code for this on some machines to stop operators messing with feedrate and spindle overrides in program, Rapid traverse cannot be locked out. Check the M code listing and also for operator settings or keep relay options.

[stevo1]

Does this happen in all programs or just some of them? I don't have any documents here at home but there is a #3000 variable that will disable the feed override. This is a shot in the dark but IIRC it may be #3010 set to 1 will disable the over ride and set to 0 will allow the override. I used this on a product line that I set up so the operators could not override during the cut. Then I enabled it right after the cut so anything else done on the machine you can override. I can check tomorrow and get back to you when I get time. If you can't wait I know that I have posted this variable once before in a thread god only knows when but a search for #3000 with my name may find the thread for you.

Stevo

[sinha_nsit]

It is #3004 on 0i, possibly different on your control.
But, this variable starts with 0 in a new machining session, enabling feed override. Possibly, it is being disabled by your program.
See the attachment for more details.

[stevo1]

Sinha,
You are correct. It is the same on the 15series as it is the Oi series. I just double checked this morning.

Ktmrider,
Check to see if this is being used anywere in your programs. Especially in any macros that might be running. I also think that once this is active it stays active so you may want to try setting #3004=0 in MDI mode. If it is set to 2 then it will disable the override.

Stevo