Two more clues. I can jog the 1 joint (y joint) at full speed with no errors and it moves the correct distance. (in joint view)
and I changed ferror n the ini from FERROR = 0.05 MIN_FERROR = 0.01 to FERROR = 0.5 MIN_FERROR = 0.1 and I was able to run the speed faster like 140ipm (in world view). Although I can still make it give joint errors if I click the + button multiple times quickly to make it accelerate and decelerate quickly. What does the ferror do? I thought that was only used for encoders? On Sun, Aug 21, 2011 at 11:24 AM, Bryce Johnson <sie...@gmail.com> wrote: > On my first setup with the slave X joint. I measured the distance and it > was correct. > > I switched to using the sample config that John pointed me to. Starting > off with the one doing no homing. > > The setups are pretty much identical except for the gantrykiins and the > settings for the additional axes. > > If I move the machine any faster then 50 ipm on any axes than i am getting > joint following errors for that axes. X gives joint follow errors 0 and 3. > Y gives joint follow errors 1. Z gives joint error two. > > Any hints on what to try next? I attached my files I'm usng the Gantry one > is based off the link I got from John. my-mill1 is the slaved config that > is working with no errors. > > (Another issue that might be a bug. When I have a joint following error. > And I re-toggle machine power. The next command I give it will have the old > one in as well. For example. If my X axis gave a joint error. I re-toggle > machine power and give it a Y movement. Then it will do the Y movement as > well as the X... and the X movement will get stuck on and i'll have to hit > the estop.) > > Thanks > Bryce > > > On Sun, Aug 21, 2011 at 9:40 AM, Bryce Johnson <sie...@gmail.com> wrote: > >> Viesturs, that is true. I should have changed the comments. A bad comment >> is worse then no comments at all. >> >> I'll check today that it is actually moving the correct distance for each >> command. >> >> John, >> I'll change my setup to follow that config. It is a whole lot easier to >> understand and looks a lot cleaner. >> >> Thanks >> Bryce >> >> >> On Sun, Aug 21, 2011 at 6:06 AM, John Thornton <bjt...@gmail.com> wrote: >> >>> There is another config that starts out a bit simpler for gantries but >>> for some reason it is only in master. >>> >>> >>> http://git.linuxcnc.org/gitweb?p=emc2.git;a=tree;f=configs/gantry;h=f3ae14446af4775372c3dd11bcc94ac227bf3fad;hb=HEAD >>> >>> John >>> >>> On 8/20/2011 7:11 PM, Bryce Johnson wrote: >>> > I am in the process of setting up a 4 stepper gantry machine (XYZX). I >>> > started off using the stepgen and slaving the axis... this appeared to >>> work. >>> > >>> > >>> > This stepup: >>> > Used the gecko 540 selection (i have the 251 which are the same) to get >>> the >>> > correct steptime, stepspace, etc. >>> > Got a base period of 65449 in my INI. (My jitter is at about 45000) >>> > Scale is 1909.9 steps per inch >>> > >>> > hal looks like this for the X and Y motors >>> > >>> > setp stepgen.0.position-scale [AXIS_0]SCALE >>> > setp stepgen.0.steplen 1 >>> > setp stepgen.0.stepspace 0 >>> > setp stepgen.0.dirhold 45200 >>> > setp stepgen.0.dirsetup 45200 >>> > setp stepgen.0.maxaccel [AXIS_0]STEPGEN_MAXACCEL >>> > net xpos-cmd axis.0.motor-pos-cmd => stepgen.0.position-cmd >>> > net xpos-fb stepgen.0.position-fb => axis.0.motor-pos-fb >>> > net xstep<= stepgen.0.step >>> > net xdir<= stepgen.0.dir >>> > net xenable axis.0.amp-enable-out => stepgen.0.enable >>> > >>> > >>> > Now what I want to do is use gantrykins so I can home my X >>> > joints separately. >>> > >>> > I based my config off of the stepper-gantry in the config. I got it >>> to >>> > run... but when I increase the speed on the X or Y axis EMC will show >>> it >>> > moving faster. But the motor will be running slow (like it is missing >>> > steps). This happens around 250 in/min. Slaving the Xs together I >>> ran it >>> > up to 480in/min >>> > >>> > Any idea would could be the issue? >>> > >>> > I attached those hal and the INI files. Not sure if you attach >>> files to >>> > the list? >>> > >>> > >>> > >>> ------------------------------------------------------------------------------ >>> > Get a FREE DOWNLOAD! and learn more about uberSVN rich system, >>> > user administration capabilities and model configuration. Take >>> > the hassle out of deploying and managing Subversion and the >>> > tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 >>> > >>> > >>> > _______________________________________________ >>> > Emc-users mailing list >>> > Emc-users@lists.sourceforge.net >>> > https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> ------------------------------------------------------------------------------ >>> Get a FREE DOWNLOAD! and learn more about uberSVN rich system, >>> user administration capabilities and model configuration. Take >>> the hassle out of deploying and managing Subversion and the >>> tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >> >> > ------------------------------------------------------------------------------ Get a FREE DOWNLOAD! and learn more about uberSVN rich system, user administration capabilities and model configuration. Take the hassle out of deploying and managing Subversion and the tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
