RE: How do I set steps per unit

["jguenther-at-loudoun.com" <jguenthe-at-loudoun.com>]

Thanks Ray, that helped a lot.  I will be doing some more testing on Sunday,
as I will be in Alabama from now until noon Sunday.  I will let you know how
it goes.

Is there any way to make EMC default to inches instead of MM?

Thanks

John Guenther

> -----Original Message-----
> From: emc-at-nist.gov [emc-at-nist.gov]On Behalf Of Ray
> Sent: Thursday, February 22, 2001 10:43 AM
> To: Multiple recipients of list
> Subject: Re: How do I set steps per unit
>
>
>
>
> John
>
> Good on ya!
>
> INPUT_SCALE and OUTPUT_SCALE are number of pulses for each unit as defined
> in the
>
> UNITS =
>
> line. One for mm.  0.03937007874016 for inch.
>
> Using inch and steppermod, you just need
>
> INPUT_SCALE =		8000	0.000
>
> With inch and freqmod selected you need both
>
> INPUT_SCALE =		8000	0.000
> OUTPUT_SCALE = 	8000	0.000
>
> With inch and smdromod selected you can change the value between input and
> output.  Input would be the number of steps per unit on the stepper motor
> and output would be the number of pulses reported by the encoder per unit.
>
> Since output scale is written back into the ini, they may look a bit
> different that you ente after you run once but setting them as suggested
> above should do the trick.
>
> Ray
>
> On Thu, 22 Feb 2001, you wrote:
> > HI All,
> >
> > Ok, now that I have an EMC installation that will move things, I have
> > some more questions.
> >
> > How to I set the steps per unit for each axis?
> >
> > I am working with an Sherline mill which with a 20 tpi lead screw and
> > stepper motors in 1/2 step mode requires 8000 steps per inch.  I am at a
> > loss to figure out what parameters in the emc.ini file need to be set to
> > achieve this.
> >
> > Thanks for all the help
> >
> > John Guenther
>
>