What version of linuxcnc are you running? Could it be 2.8 or newer? If it is take a look at axis.x.jog-accel-fraction - maybe it isn't 1?
On Fri, Feb 21, 2020 at 7:19 PM Gene Heskett <[email protected]> wrote: > On Friday 21 February 2020 17:43:34 John wrote: > > > Inches at the moment since the screws are imperial. And 3.3 x 60 is > > almost 200ipm. So plenty of speed. > > > But that 3.3 is IPM, not IPS. > > > Sent from John's iPhone 4S > > > > On 2020-02-21, at 2:23 PM, Gene Heskett <[email protected]> wrote: > > > On Friday 21 February 2020 17:02:13 John Dammeyer wrote: > > >> I'm confused about the acceleration parameters. > > >> In the hal file. > > >> setp stepgen.1.maxaccel [AXIS_1]STEPGEN_MAXACCEL > > >> > > >> Which comes from the ini file. > > >> MAX_VELOCITY = 3.3 > > >> MAX_ACCELERATION = 15.0 > > >> STEPGEN_MAXACCEL = 35.0 > > >> > > >> What I'm finding is if I do a G00 X5 > > >> It accelerates very quickly. > > >> But if I use the jog buttons on the AXIS screen it takes a really > > >> long time to get there. > > >> > > >> It's even worse with the 4th axis. Fairly quick with G00 A360 from > > >> say 0 for one complete turn. But it's not even up to speed by the > > >> time one turn has been done. > > >> > > >> These values aren't that much different. > > >> MAX_VELOCITY = 180.00 > > >> MAX_ACCELERATION = 720.0 > > >> STEPGEN_MAXACCEL = 900.00 > > >> I'm missing something but where? > > >> Thanks > > >> John > > > > > > Are you running in metric or inches?. If inches, those accell's > > > would be too high, and is likely too quick even for metric. > > > > > > The MAXVEL's are both pretty slow as those are either ipm's or > > > degrees per minute > > > > > >> "ELS! Nothing else works as well for your Lathe" > > >> Automation Artisans Inc. > > >> www dot autoartisans dot com > > >> > > >> > > >> _______________________________________________ > > >> Emc-users mailing list > > >> [email protected] > > >> 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) > > > If we desire respect for the law, we must first make the law > > > respectable. - Louis D. Brandeis > > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > 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) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
