Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Posted by
Art Fenerty
on 2002-02-01 13:53:40 UTC
Jon:
Yes, I was under the impression that a move like G01X.1A180 should ramp
the 180 as it is the longest move. But in fact the system computes the move
of .1 in the X and "fits" the 180 degree change into that movement, which
causes A axis to lose pulses as it goes too fast. What if A is a linear
axis?
Art
Master5 Software
http://users.andara.com/~fenerty/master.htm
Yes, I was under the impression that a move like G01X.1A180 should ramp
the 180 as it is the longest move. But in fact the system computes the move
of .1 in the X and "fits" the 180 degree change into that movement, which
causes A axis to lose pulses as it goes too fast. What if A is a linear
axis?
Art
Master5 Software
http://users.andara.com/~fenerty/master.htm
----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, January 31, 2002 2:02 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
> Art Fenerty wrote:
>
> > Hi All:
> >
> > I have an EMC question. Does a move like "G01 X .01 A180" cause a
servo
> > fault or stepper motor race condition? The Math of my trajectory
planner,
> > which is based on EMC's exhibits this problem. I have performed a fix to
> > stop it for now, but I'm curious if EMC's trajectory planning routines
have
> > the same bug. I'd appreciate someone with a rotary axis giving this a
try.
> > You can actually see just from looking at the display that the A takes
off
> > too fast so you don't really need a physical A-Axis to see it.
>
> Well, what is the feedrate? How, in fact, do you calculate the feedrate
> without knowing the radius of the object relative to the center of the
> A axis? The only way I can figure this out for EMC, is that you'd
> manually have to figure out the acceptable time for the A axis to
> move 180 degrees (I assume that is what you are doing) and then
> compute a linear feedrate for the X axis that will take as long.
> Assuming it takes 6 seconds for the A axis to turn 180 degrees,
> the feedrate should be .1 (minute) * .01 (inches) = .001 IPM.
> Is this the problem you are having?
>
> Jon
>
>
> Addresses:
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Discussion Thread
Chris L
2002-01-29 21:43:35 UTC
EMC Contouring Settings
Jon Elson
2002-01-29 22:31:06 UTC
Re: [CAD_CAM_EDM_DRO] EMC Contouring Settings
Chris L
2002-01-29 23:10:41 UTC
Re: [CAD_CAM_EDM_DRO] EMC Contouring Settings
awemawson
2002-01-30 00:58:38 UTC
Re: EMC Contouring Settings
Gene
2002-01-30 01:56:40 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings
chewy8833
2002-01-30 06:22:57 UTC
Re: EMC Contouring Settings/ downloading BDI
Richard Konnen
2002-01-30 08:13:40 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Engine Tech
2002-01-30 08:53:21 UTC
RE: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
ballendo
2002-01-30 09:05:42 UTC
Re: EMC Contouring Settings/ downloading BDI
Mike Gann
2002-01-30 09:11:15 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Chris L
2002-01-30 17:00:40 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings
Chris L
2002-01-30 18:08:18 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-01-30 18:35:28 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Jon Elson
2002-01-30 22:48:30 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-02-01 13:53:40 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
ballendo
2002-02-01 15:12:25 UTC
Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-02-01 15:25:57 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Alan Marconett KM6VV
2002-02-01 16:03:17 UTC
Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-02-01 16:47:06 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
dkowalcz2000
2002-02-01 20:50:03 UTC
Re: EMC Contouring Settings/ downloading BDI
Jon Elson
2002-02-01 22:25:32 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Jon Elson
2002-02-01 23:06:05 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Bill Vance
2002-02-02 02:02:57 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-02-02 06:24:20 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-02-02 07:06:19 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Alan Marconett KM6VV
2002-02-02 09:13:37 UTC
Re: EMC Contouring Settings/ downloading BDI
Jon Elson
2002-02-02 09:56:22 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Jon Elson
2002-02-02 10:01:44 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Art Fenerty
2002-02-02 10:48:44 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Paul
2002-02-02 13:31:39 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
Bill Vance
2002-02-02 14:09:59 UTC
Re: [CAD_CAM_EDM_DRO] Re: EMC Contouring Settings/ downloading BDI
ballendo
2002-02-03 01:43:45 UTC
Universal head was Re: EMC Contouring Settings/ downloading BDI
Bill Vance
2002-02-03 05:24:55 UTC
Re: [CAD_CAM_EDM_DRO] Universal head was Re: EMC Contouring Settings/ downloading BDI
Hugh Currin
2002-02-03 09:26:30 UTC
Re: Universal head was
ballendo
2002-02-04 08:09:08 UTC
Re: Universal head was