On Sunday 27 May 2018 17:16:50 Gene Heskett wrote: > Giveing up on the jig brace, I decided to make a wooden one as it > doesn't have to last till the rapture. I laid out a circle, then > contemplated how to draw this circle such that its position was offset > half a mm for each time that it was drawn, until I got the proper > depth of cut. > > Without doing the arcgenm18 routine in 50 pieces of code, I tried to > make a sub routine out of it by manipulating the y offset, but whilew > it moved, it didn't want to do it in a straight line up the y axis, > but wandered off the the right and got smaller. I moved vars around, > but that failed similarly. So I got this wild hair to move the > co-ordinate, then I could re-use the same subroutine until I'd hit the > offset I wanted. But I stopped it as it was starting the 2nd > semi-circle, which means the y coordinate had been moved what I > thought was half a mm. > > But on further study of the docs, neither G10 L2 or G10 L20 take > anything but absolute values. > > So this means I have to get the current y coordinate from the memory > for P1's map, add my small var, and rewrite y with a G10 L2 y new > value. > > Except I moved it 40mm with the first command, and now it says the > first mpve will exceed the y limits. Then I noticed the - sign was > missing too for y. > > Is this a place where I have to g53 g0 x0 y0 z0 > and then rewrite the p1 map to all balls at that location? A shutdown, > restart and rehome has not fixed it. Then reset y for each pass with > G10 L2 P1 y[#5222 + 0.50000000] mm mode! > > And end the program with either a saved initial #5222, or another g53 > etc etc?
And I just found out why the corrections applied are so gross as to disable lcnc. The value stored is in #5222(G54Y) is in inches, despite its being in G21 mode. So I need to divide my var for increments by 25.4 to make it inches. Sigh... Sure as hell there ought to be a way to walk a D pattern in a while loop without unrolling it to a 50kb file. Funny part is it looks great in the back plot. Thanks -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ 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
