On Wednesday 10 April 2019 11:21:11 Jon Elson wrote: > On 04/09/2019 08:31 PM, Gene Heskett wrote: > > Greetings all; > > > > out of the logic that determines whether the machine will run gcode > > when that A axis has not been homed because its unplugged, off the > > machine and stored and either is unhomed, or was never homed since > > this power up. > > > > How is this best done? Preferably done so that a powerdown to switch > > its homing on or off, won't disturb LCNC's ability to run gcode just > > because the A isn't homed?? > > Well, there usually is not a huge reason to have home > switches on a rotary axis, unless you have setups that will > be reused on following days.
Or need a reference for setting angles while shaping HSS tools in it. If I can find a CBN cup small enough. I've already tore up $200 worth of diamond stuff trying to use diamond on HSS. No matter how slow you turn the diamond, it will fail, usually before the desired shape has been attained. > So, you can set the A to home > wherever it is (search and latch velocity of zero). Ground > encoder inputs with a shorting plug, so noise doesn't cause > LinuxCNC to think the axis is moving without command. Then, > you can even unplug the axis while LinuxCNC is running, and > plug in the shorting plug. No, not with stepper drivers. You do any connection foolery with power off. With the relay I put in yesterday, disabling machine motion does that. > > Another scheme is to have two LinuxCNC config file sets, one > with the A axis and one without. I'm leaning somewhat in that direction. I see by the Docs that the halfile spec says files. Plural. So that and the #INCLUDE may show a way fwd. Time will tell. Might be 2 .ini's and 4 or more .halfiles before thats all done. And becoming hell to maintain. :( The addf's should probably be two separate but complete lists just to maintain a working addf ordering. Twopass should help with that if I put the A addf stuff as an #INCLUDE right in the correct location in the 2nd halfile's addf list. I can see my coffee consumption, already too high, going up before thats finished. :( Thanks Jon. > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
