RE: High stepper rate troubles

[Tim Goldstein <tgoldstein-at-mlh-services.com>]

I ran into the same problem when I was testing G320 step and direction servo
drives with EMC and 1000 line encoders. The results of that test and
discussions with Mariss is what lead to the creation of the G340. You may
want to contact Mariss and see if you can exchange the G201 for the pulse
multiplied version. Also, what speed computer are you using? A faster
processor would be of some value.

Tim
[Denver, CO]


> Hello all,
> 
> I am a hobbyist with a CNC converted Sherline mill using steppers
> driven by Geckodrive G201 stepper drives.  I am running 
> emc-0.9-25 with
> steppermod.o.
> 
> With my setup, I get a INPUT_SCALE of 40000.  This value is 
> so high that
> it crashes the computer after the modules have been loaded.  
> It looks to
> me like there are too many interrupt per second so nothing else gets a
> chance to run. 
> 
> So my question is this:  How do I fix it?  I tried lowering the
> MAX_VELOCITY variable, but that did not help.
> 
> Thanks,
> John.
> 
>