Re: [CAD_CAM_EDM_DRO] G code Examples

Alan Marconett KM6VV wrote:

> Jon,
>
> Lots of useful information! I am interested in:
>
> G92 - Programming of absolute zero point (from NIST)
>
> As I understand it, G92 "sets" the controller's coordinates to that
> specified? And something is saved to a file, for the next time the
> machine is run? I'm not clear on what gets remembered. MaxNC remembers
> the last coordinates the machine was at (when restarted), is that part
> of G92's function?
>
> I was looking for a "Gcode" instruction to set the current location for
> MY program! Thanks!

I don't really understand what you mean. G01 X2.345 moves the machine
to an X coordinate of 2.345 units. If you want to set some position the machine
is currently sitting at to x=2.345 inches, you enter G92 X2.345, and EMC
now considers that position to be X=2.345". Is that what you mean?
Yes, EMC also saves the offset between home and the position you set with
a G92, so after homing, you will have the same coordinate system as before
you shut it down. This is great when referencing off the fixed chuck jaw or
a fixture left on the machine for several days running.

Jon