Oh hey that looks exactly like what I need! Thanks! Danny
---- sam sokolik <sa...@empirescreen.com> wrote: > would any of these help? > http://linuxcnc.org/docs/2.7/html/gcode/m-code.html#mcode:m48-m49 > > On 10/12/2016 1:09 PM, dan...@austin.rr.com wrote: > > As described earlier, I have a probe I used to set the Z after changing > > tools. The Probe Z button calls an MDI which calls a .ngc g-code file > > which uses the G38 probe routine. > > > > What I realized is the Feedrate Override mucks with the probe cycle. The > > probe cycle needs to operate at a consistent speed, but Feedrate Override > > is being used, sometimes resulting in terribly slow or fast probes. > > > > What are the options here? The g-code can't ignore or set the Feedrate > > Override, can it? > > > > All I could think of was tying the Probe Z button to a HAL which copies FO > > to a backup net "FeedOverride_Back" on rising edge, writes FO=1.0, and > > copies back on falling edge of is-auto. This sounds super-convoluted. > > > > Also, important question to know overall- how could that work? If I have a > > a rising edge of Probe Z button, and I both copy FO to FeedOverride_Back > > AND write FO=1.0 concurrently, is there a way to predict what gets stored > > in FeedOverride_Back? This sounds like it's two separate threads, and you > > don't have a guarantee as to which executes first. > > > > e.g. Feedrate Override is 0.2. Does FeedOverride_Back always get 0.2, or > > could FO=1.0 execute first so both Feedrate Override and FeedOverride_Back > > = 1.0, and the 0.2 value is lost forever? > > > > Would it make sense to get sneaky and, inside the G-code for the probe, > > divide the desired F-parameter by the current Feedrate Override, e.g. > > desire F10, write F10/[some way to get Feedrate Override=0.2] = 50 which > > will result in a feedrate of 10 due to the 0.2 multiplier? > > > > Danny > > > > > > ------------------------------------------------------------------------------ > > 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 ------------------------------------------------------------------------------ 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
