On Sunday 23 September 2007, Chris Radek wrote: >On Sun, Sep 23, 2007 at 12:43:58AM -0700, Brian Pitt wrote: >> I've finally gotten around to slapping the stepper on my rotary table and >> I'm having some trouble getting it to run the way it should >> >> it jogs just fine ,right up there at 1080 deg/min and the scale reading >> matches the display and even goes in the right direction so that much of >> it is configured right >> >> but when I go to MDI the 'A' axis it runs dead slow or slower no matter >> what feed rate I give it in G01 and doesn't go any faster in G00 >> >> is there any fix for this ? > >Your [TRAJ]MAX_VELOCITY and [TRAJ]MAX_ACCELERATION need to be as high >or higher than the highest of all your [AXIS_0] ... [AXIS_3] sections
I have been under the impression it was the other way around so the steppers could play catchup. I've actually mine overspeed for a small fraction of a second doing that I think, or I was hearing the backlash comp moves, not sure which now. >When you increase those two things it'll fix the behavior in >coordinated mode. Hmm, if A is the only thing commanded to move, that shouldn't be a 'coordinated' move for an MDI command, or so I'd think. >The sample configuration "max" is my XYZA stepper mini mill. Maybe >looking at it might help you too. Where is this 'max' located? It doesn't seem to be part of ~/emc2/configs/stepper in this 2.1.7 install. I've gotta get a motor on my table so I can play in a slightly deeper section of the pool. Got the 4 axis amp & 4 of those 425 motors from Jeff, came in friday. But I'm in the middle of a gun cabinet project, for me. :-) Thanks, Chris -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) MS-DOS must die! ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
