Re: [Emc-users] Acceleration Settings?

[gene heskett]

On 5/15/24 19:21, Jon Elson wrote:

On 5/15/24 12:23, Todd Zuercher via Emc-users wrote:
I'm trying to figure out something goofy that seems to be going on 
with my acceleration settings.

I'm running Linuxcnc 2.9.0 and Axis ui.
I have all of the max_acceleration settings set for 20.0 (and 
stepgen_maxaccel = 25), and for some reason everything only  moves 
with an acceleration of 10 ipsps for G0 and G1 moves (confirmed with 
Halscope), but jogging does go at 20.  Is there normal behavior or am 
I missing some setting somewhere that is limiting the acceleration?


In the latest LinuxCNC there are TWO places that have accel and max 
velocity settings.  Jogging is in the JOINT_x part, and CNC moves are in 
the AXIS_x section.  In general, you want the same settings in both 
JOINT and AXIS sections.


Jon


I didn't know you could set them differently Jon. Any time I fiddle with 
those, if they don't match, hal yell's at me and exits.



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Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis



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Re: [Emc-users] Acceleration Settings?

[Peter Wallace]

On Wed, 15 May 2024, John Dammeyer wrote:


Date: Wed, 15 May 2024 16:57:44 -0700
From: John Dammeyer 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "'Enhanced Machine Controller (EMC)'" 
Subject: Re: [Emc-users] Acceleration Settings?





-Original Message-
From: Jon Elson [mailto:el...@pico-systems.com]
Sent: May 15, 2024 4:20 PM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Acceleration Settings?

On 5/15/24 12:23, Todd Zuercher via Emc-users wrote:
> I'm trying to figure out something goofy that seems to be going on with my
acceleration settings.
> I'm running Linuxcnc 2.9.0 and Axis ui.
> I have all of the max_acceleration settings set for 20.0 (and
stepgen_maxaccel = 25), and for some reason everything only  moves with
an acceleration of 10 ipsps for G0 and G1 moves (confirmed with Halscope),
but jogging does go at 20.  Is there normal behavior or am I missing some
setting somewhere that is limiting the acceleration?
>
In the latest LinuxCNC there are TWO places that have accel
and max velocity settings.?? Jogging is in the JOINT_x part,
and CNC moves are in the AXIS_x section.?? In general, you
want the same settings in both JOINT and AXIS sections.

Jon



That's interesting.  What is then the major difference between Joint and 
Axis?  Just jogging parameters?

John


LinuxCNC versions 2.8 and > separate joints (think of these as actuators or 
motors) and Axis. Axis are normally cartesian or rotary axis. This makes sense
for machines where joint and axis do not map exactly, such as gantry devices 
that may have duplicated X,Y,Z joints (so up to 6) but only 3 axis or say a 
CoreXY laser cutter where the joints and cartesian axis are related by a 
kinematics equation.


Peter Wallace
Mesa Electronics___
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Re: [Emc-users] Acceleration Settings?

[John Dammeyer]

> -Original Message-
> From: Jon Elson [mailto:el...@pico-systems.com]
> Sent: May 15, 2024 4:20 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Acceleration Settings?
> 
> On 5/15/24 12:23, Todd Zuercher via Emc-users wrote:
> > I'm trying to figure out something goofy that seems to be going on with my
> acceleration settings.
> > I'm running Linuxcnc 2.9.0 and Axis ui.
> > I have all of the max_acceleration settings set for 20.0 (and
> stepgen_maxaccel = 25), and for some reason everything only  moves with
> an acceleration of 10 ipsps for G0 and G1 moves (confirmed with Halscope),
> but jogging does go at 20.  Is there normal behavior or am I missing some
> setting somewhere that is limiting the acceleration?
> >
> In the latest LinuxCNC there are TWO places that have accel
> and max velocity settings.� Jogging is in the JOINT_x part,
> and CNC moves are in the AXIS_x section.� In general, you
> want the same settings in both JOINT and AXIS sections.
> 
> Jon
> 
That's interesting.  What is then the major difference between Joint and Axis?  
Just jogging parameters?
John

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> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users



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Re: [Emc-users] Acceleration Settings?

[Jon Elson]

On 5/15/24 12:23, Todd Zuercher via Emc-users wrote:

I'm trying to figure out something goofy that seems to be going on with my 
acceleration settings.
I'm running Linuxcnc 2.9.0 and Axis ui.
I have all of the max_acceleration settings set for 20.0 (and stepgen_maxaccel 
= 25), and for some reason everything only  moves with an acceleration of 10 
ipsps for G0 and G1 moves (confirmed with Halscope), but jogging does go at 20. 
 Is there normal behavior or am I missing some setting somewhere that is 
limiting the acceleration?

In the latest LinuxCNC there are TWO places that have accel 
and max velocity settings.  Jogging is in the JOINT_x part, 
and CNC moves are in the AXIS_x section.  In general, you 
want the same settings in both JOINT and AXIS sections.


Jon



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[Emc-users] Acceleration Settings?

[Todd Zuercher via Emc-users]

I'm trying to figure out something goofy that seems to be going on with my 
acceleration settings.
I'm running Linuxcnc 2.9.0 and Axis ui.
I have all of the max_acceleration settings set for 20.0 (and stepgen_maxaccel 
= 25), and for some reason everything only  moves with an acceleration of 10 
ipsps for G0 and G1 moves (confirmed with Halscope), but jogging does go at 20. 
 Is there normal behavior or am I missing some setting somewhere that is 
limiting the acceleration?

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031


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