> On 23 Mar 2025, at 01:51, John Dammeyer <jo...@autoartisans.com> wrote: > > How does the system calculate this new G54.Z value?
Depending on how you look at it, it doesn’t. The displayed (and working) position is just machine (G53) position + G54 offset + tool offset (+G92 offset) When you set zero at the top of the block with the 4” probe (assuming you are using G10 , or the GUI is doing that for you) then the G54 offset is calculated such that the sum is zero. Then you put the shorter tool in, the G54 offfset stays the same, the tool offset is less, and the displayed position is 2” above your datum surface (the 123 block) I prefer to keep the probe offset as zero and have all tool offsets relative to that. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
