fanuc 18-T parameter question

[rob jerico]

got a okuma lathe a while back and just started playing with it,it has a fanuc 18-T control on it, it was in a GM production plant and the single block, feed traverse overide, rapid traverse overide and rpm overide are all locked out, i cannot figure out what parameters i need to fix, anyone have any idea? thanks for your time

[short round]

Rob,
I have seen some vertical lathes that came from a GM plant that had a custom screen written in C language that let the engineers control what the operator could and could not do on the machine. If this is the case you will need the password for the higher level that shows the settings in the custom screen.

Good luck,
short round

[rob jerico]

i hope someone has a better idea, the plant closed months ago

[viorel26]

this may help

[Shoprag]

These functions are normally controlled from the ladder logic using G-addresses. Look at the following coils:

G46.1 when this is high the machine enters single block
G10 through G11 These form a binary pattern to control feed rate override
G14 bits 1 and 0 Rapid override
G30 a binary pattern that establishes the spindle override

It's easy to modify the ladder to prevent the operator from manipulating the cutting program.

[rob jerico]

thanks guys, im not a expert on how to play with the ladder, i will keep you posted, thanks again

[sinha_nsit]

System variable #3003 and #3004 might have been used in the beginning of the program to control single block, feed override etc.