On 5/10/2013 4:18 PM, Viesturs Lācis wrote: > Hello! > > Today I was helping my client to prepare a g-code for their new machine I > built. > The particular code was manually optimized for faster performance and I > thought that having a code for one part in subroutine and then creating > another file, which just moves around material and calls subroutine in > appropriate places would be easier than hand-optimizing one big and long > g-code file. > > Since I have not had any experience with subroutines so far, I looked in > manuals. Based on them I was able to define subroutine and call it from the > master file. > > What I do not know, how to do properly, is when the subroutine has been > called once and is finished, machine moves to next point to call the > subroutine again. How do I move subroutine's coordinate origin to the new > spot? > > I tried 2 things: > 1) G55 is specified at the beginning of subrouting file; > in master file I had: > G21 > G54 > G40 G90 > G64 P0.02 > G0 Z15 > G0 x0 y0 > G10 L2 P2 X0 Y0 Z15 > o101 call > G54 > G0 Z15 > G0 X0 Y200 > G10 L2 P2 X0 Y0 Z15 > o101 call > .... > > 2) then I tried to move G10 L2 P2 X0 Y0 Z15 to subroutine so that it is > done in subroutine > > Anyway, none of these 2 approaches work properly, G55 origin is not moved > and as soon the subroutine was called for the second time, machine started > to move somewhere. Z axis was moving down too much, so I never allowed it > to finish as it really seemed to be willing to crash the tool in material > (I tested it in the air some 100 mm above material). > > I would appreciate, if someone could share some working example of how to > do these things properly. > I usually just specify the coordinates as arguments to the subroutine. For example, if I have a subroutine that mills a circular pocket, I pass the center of the pocket as the first two arguments to the subroutine.
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