Re: Stepper motors only turning one direction

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
> coldfusionracingproducts wrote:
>
> >Here is my setup:
> >
> >Centent Cn0143 Microstepping drives (older geckos)
> >680oz Camtronics Steppers
> >24v power supply
> >PC with Mach2
> >
> >My motors are only turning in one direction. The distance
traveled
> >is perfect though. When I jog 1 inch left then 1 inch right, it
> >makes it 2 inches right...
> >
> >I measured the signals coming out of the Parallel Port and I am
> >getting changes in the direction voltage.
> >
> >
> >
> Can you force the direction signal to reverse the drive, perhaps
using
> some AA batteries (and a resistor if it is an opto-isolator input)?
>
> Jon