RE: [CAD_CAM_EDM_DRO] RE: Lost Steps

> I can't get my pc to run freqmod at all with the 0.000015 period
> that your ini file suggests that you are using. I have a
> cyrix pr300 and
> can only get to a period of 0.00004 and still have anything
> left for the
> gui.

That is the actual period I am running on my K6-450 and I have plenty left
to drive the gui.

> I normally run 4000 steps per inch but reset the ini file to 8000. At
> that frequency, above about 60 ipm I loose steps rather
> consistently with
> freqmod. It does seem to creep in one direction rather than
> being random.

I can go reliably to 80 or so ipm without losing any position if I can
accelerate past a stall I have at ~50 ipm on the X axis.

> I used the same settings with steppermod.o and found that I
> could get a
> little higher speed 65 ipm before I started loosing steps.
> It seems to me
> that there is some kind of upper bound in the steppermod
> software around 10
> kpps. If I remember correctly Fred mentioned an upper limit
> around 5 kpps.

I definitely get faster feeds with freqmod. BTW, using the Geckodrive servo
units at 10,000 steps per inch I can get 180 ipm with no problem using
either motion module.

Tim
[Denver, CO]