Fanuc 3T-F on a Nakamura Slant -I need some help

[Flyer007]

Hi all,

I have a new to me lathe and first one that is "industrial". I have some experience with LinuxCNC and manual turning.
Have been spending a lot of time researching this controller and 6T as I have seen threads that they are similar. I do have some manuals but some are missing pages and others don't seem well written.

1. I can ZRN the machine. When doing so the POS screen reads Relative U -12, W 4 ; Absolute X -12, Z 4 ; Machine X 0, Z0.(in mm) I try to X Cancel, Z Cancel to zero these out (doesn't work) I can Cancel U,W. I notice a G28 U0 W0 works in MDI whether I cancel those at home or not. Also, I notice that I can go into a manual mode and move the Z further another 4inches before over travel alarm.
Are these behaviors correct? Can I change the Z/W ZRN point further back to get more travel? Is Machine coord in mm okay if I program in inches?

2. This machine does have FAPT and it seems to be working. I have searched everywhere but cannot find manuals for this model or tutorials on FAPT. I have found a 3T-D manual that shows FAPT content. Would it be worthwhile getting at $150?

I'm excited to learn and start using this machine. it was at a price that was too good to turn down even at this age.

 

[sinha]

Home position does not restrict tool movement. You can go beyond that even in AUTO mode. It is mainly used as a safe tool-change position.
If is, however, possible to change the home position.

 

[atex57]

After ZRN switch to MDI and type in '"G50 Z0", Input then Start.See if the POS has changed to Z0. I have a 3T and a 6T and they are enough different to need different cheat sheets. LCNC does not have a few of the capabilities as a Fanuc control. I have a Hardinge lathe with LCNC on it and it has paid for itself many times over. I am waiting for 2.9 with G70,71, and 72 and a few other goodies.

Ed.

 

[Dan from Oakland]

Go to your work shift page and check your work offset values. Good chance these are set to the x-12. and Z4. you are seeing on your position screen after homing. To clear the these- hit Z> cancel and X> cancel. They should both go to zero at that point. Go back and rehome- pos should be 0.0

 

[Flyer007]

Thanks for the replies, I will try them out. Dan from Oakland- I don't believe this has a work shift page. On all the POS pages, only U,W can be zero'd with the cancel button. I can G50 X, Z.

I am hoping to follow the 6T notes on using the tool offsets as geometry offsets (not wear) and using G50 Z0 as my part touch-off point.

I can deal with the machine zero being -12, -4 knowing that it is safe tool change area and that I have another 5" in Z I can move to programmatically.

Now, on to FAPT, anybody know of any early FAPT documentation out there?