RE: [CAD_CAM_EDM_DRO] EMC setup questions

I have never used EMC in metric, but I know that there is a parameter in
the .ini file (can also be passed as a G-code) of G21 which tells the
interpreter to work in metric units. My guess is that you are in G20
mode which is english units.

Also, EMC will do well over 5kHz. I know it is referenced somewhere in
the documentation or on the web that this value is some type of limit,
but I have EMC setup doing 25kHz just fine.

Tim
[Denver,CO]

> > Hi All,
> >
> > Thanks for all the answers to my previous questions. I have
> now got my
> > system up and running with EMC. I am still looking for the right
> > settings to get my units correct: Now EMC works in mm and
> shows mm on
> > the screen, but my table moves lots more than 1mm when commanded to
> > move 1mm. This is when I have input_scale=1000 and the
> emc-gui shows a
> > feedrate of around 20-60 units?/s
> >
> > I am using steppermod.o
> >
> > I have linear_units =1
> >
> > I have tried to calculate input_scale as follows:
> > my steppers are 200step/rev driven with halfs steps =>
> 400steps/rev my
> > ballscrews give me 5mm movement for every rev. =>
> input_scale should
> > be 80 ??
> >
> > when I set input_scale to 80 on one axis for testing it, it
> seems to
> > work when jogging in the + direction, but I immediately get a
> > following error when pressing the - button. The FAQ tells
> me to reduce
> > feedrate when this happens. I have max_velocity set to 20
> on all axes.
> > If I understand correctly the parallell port whould be able to do
> > around 5 kHz which would be equivalent to a feedrate of
> over 60mm/sec
> > on my system (5000steps/s / 400 steps/rev * 5 mm /rev > 60 mm/s)
> > even with a very low feredrate I get the following error when trying
> > to move in the - direction.
> >
> > thanx for any help,
> >
> > AW
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> >
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