Univ Step Ctrl - was Re: Backlash problem? - Solved

Jon
Any way to get this control to work with Mach2?
Kevin

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
> kdoney_63021 wrote:
>
> >Art (of Mach2 fame) suggested I not use the multiplier on the
Gecko
> >G210. I took his suggestion and it worked. I also removed the pll
> >from another G210 and it also worked. Art said that this error had
> >been reported to him before. It was something about the quick
change
> >of direction?
> >
> >
> The timing of the direction signal relative to step pulses is
critical for
> all step/direction drives. I think the Gecko step multiplier has a
timing
> requirement that is different from most other drives. The G201
drive
> used to have the same requirement, but the G201A changed it to
> be more relaxed. I think the old G201 and step multiplier boards
> needed the direction signal to stay at the same level it was at
during
> the step pulse for up to 20 uS or more after the step pulse. The
G201A
> only requires it to set up a microsecond before and hold a
microsecond
> after the step pulse.
>
> This has caused problems with many sources of step/direction
signals,
> and I had to put a special mode in my universal stepper controller
to
> accomodate this requirement.
>
> Jon