> On Jun 3, 2017, at 5:17 AM, andy pugh <bodge...@gmail.com> wrote: > > On 3 June 2017 at 01:11, <tom-...@bgp.nu> wrote: >> However, what we were seeing (and have seen multiple times now but cannot >> yet re-create at will) is that even though our routine is commanding say, a >> diameter of .324, the DRO in Axis is showing the cutter down below that. >> Meaning there is a disconnect between the commanded position and where the >> machine is really is. > > Are you displaying commanded or actual position? ie, is the axis not > where LinuxCNC commands it to be, or is LinuxCNC not commanding the > numbers from your G76 command?
The DRO is showing the actual position. I am pretty sure the commanded position from G76 is being sent correctly, at least when this problem is NOT happening it works fine. I am going to try cutting some more today and will see if I encounter this issue again, though I am not sure what I should look at when it is happening? > > The G76 code is here: > https://github.com/LinuxCNC/linuxcnc/blob/9e4641a816ab8fe4f6a09a48fac550cc8aef1dee/src/emc/rs274ngc/interp_convert.cc#L4590 > > That seems quite explicit: > double end_depth = fabs(k_number) + fabs(i_number); > > And the last moves are cut at start_x - end_depth We were talking about looking at the G76 code to see what it was doing, thanks for the pointer to it. -Tom > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1916 > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
