Re: RE: windows or dos based NC software

Jerry

I think that the key in your excellent post is the notion of, "some
'intelligent' peripheral boards." These thing, although rather expensive
compared to the cost of a PC these days, can rather easily get around the
latency or non-deterministic nature of signals from the PC. Most
commercial CNC systems load part of the motion control into peripherals.

Ray

>    From: "Carol & Jerry Jankura" <jerry.jankura@...>
> Subject: RE: windows or dos based NC software
>
> Hi Terry:
> > Why not keep it on list and bang your drum to your hearts content, it
> > is very on topic. I would like to know "The Truth" as well rather
> > than reading that it is possible and be given no details.
>
> As Mulder often said, "The Truth is out there!.
>
> To answer your question - I built some Win 95 'real time' controls a
> few years back using Borland's Delphi along with some 'intelligent'
> peripheral boards - a DSP based frame grabber and a Compumotor three
> axis stepper/servo driver. The frame grabber (actuall, there were two
> of them) ran blob analysis software to analyze an image and reported
> locations to the PC. The PC ran the algorithm and calculated the number
> of steps the motors should turn. The motor controllers took those step
> commands and generated the acceleration profile to move the motors.
>
> It worked like a charm. This was about six years ago.
>
> -- Jerry