Hmm, I'll take a closer look at this over the weekend. I suspect this issue
is due to one of the recent fixes. Do you still see violations if the Z
axis limit is the same as X and Y?


On Thu, Apr 10, 2014 at 9:57 PM, sam sokolik <sa...@empirescreen.com> wrote:

> Ok - I found another issue.  I have been playing with the little terco
> mill.  Z kept losing steps.  I figured noise or running too fast...
> well dad said - maybe linuxcnc is erroring..  I thought no way.  I have
> tested the new tp extensively.. :)
>
> well....  I ran the config in sim with the peak readings and it looks
> like the z axis's velocity constraints are violated.  Here is a
> screenshot of halscope.  z axis has a max velocity of 1in/s (60in/min)
> You can see that it violates the velocity - peaks at 1.6in/sec.
> (positive and negative)
>
> http://imagebin.org/304984
>
> here is a screenshot of the whole run - it peaks at 2in/sec at some
> point.  (way faster than that axis can go)
>
> http://imagebin.org/304985
>
> here is the ini
> http://pastebin.ca/2694160
>
> here is a short snippet of gcode.
>
> (it violates velocity -1.6in/sec)
> http://pastebin.ca/2694169
>
> dad always seems to be right....
>
> sam
>
>
>
> On 03/28/2014 06:40 PM, Robert Ellenberg wrote:
> > It turned out that the max feed override defaulted to zero if not set in
> > the INI, which caused the velocity to be set to zero. I added a default
> > value here that seems to fix that test. Also, I think the ripple issue is
> > fixed (I moved the vLimit check to always be called in the function that
> > calculates target velocity).
> >
> > On Fri, Mar 28, 2014 at 7:27 AM, sam sokolik <sa...@empirescreen.com>
> wrote:
> >
> >> inital testing now the feed override acts as expected.  (This is going
> >> from 100% to 90%)
> >>
> >> http://imagebin.org/302341
> >>
> >> I still see the same ripples when the maximim velocity is turned down.
> >> (ie - 20ipm sees peaks of 27ipm)
> >>
> >> http://imagebin.org/302342
> >>
> >> on thing - it seems to be failing a run test now. 'subroutine-return'
> >>
> >> Great work!
> >> sam
> >
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