Need help troubleshooting Frankenmill

[Colorado Greg]

New to the forum so I'm not sure if this the ideal place to post this but here it goes....

I've got a Wells Index unit from 1984 that at some point in it's life was retrofitted with a Fanuc 11 controller. Mostly it seems to be working but I've got a problem with the Z axis in the it almost always overtravels + when doing a G28 before I get started. I'm new to the CNC game and really want to get get started cutting but this is something I need to get sorted out.

I'm not even sure what people will need to know in order to help but I'm hoping someone can help me out!

[dcoupar]

Do you use G91 G28 Z0?

[Colorado Greg]

Yes, that's what's typically causing it to overtravel in the Z+. I've got another discussion thread that I started that is getting me somewhere:

Need help troubleshooting Frankenmill

So, now I just need to get past the write issue and I should be able to get this sucker working as expected.

-Greg