Re: Parallel Port Woes

--- In CAD_CAM_EDM_DRO@y..., "Carol & Jerry Jankura"
<jerry.jankura@s...> wrote:

> Whose windows based controller are you using? Have you tried to

measure the

> pulse train jitter with your 900 Mhz processor?
>
> -- Jerry

I am currently using a demo version of Kellyware. I was looking at
Art's creation (Master5) but this application needs to be able to
read an Excellon Drill format. For my normal engraving I was using
Microkinetics Superscribe. It's a DOS based controller that will
only take HPGL input. I built a verticle mounted rotary table and
have been custom engraving 303 stainless steel pens and pencils I
make for friends and gifts. I have long been an advocate of Windows
as the base OS (last time I said this it fired off a storm
of "protest") since I like to have my layout software and controller
on the same box.

I have not checked the jitter but the XY table runs pretty smooth and
the accuracy is very good. I exported a 600 hole drill file and
somewhere in the process the software duplicated each "series" of
holes and it ended up darting back about every 5 or 6 holes and
redrilling the sequence of holes in reverse (real boring to watch!)
at the end of the 30 minute run it ended back precisely at 0,0 and
all of the holes were dead on. If it has jitter I guess it doesn't
matter as long as I get what I want ;-)

BTW the XY steps per inch are 3200 and my table is currently setup to
run at 25IPM. I am going to double that rate next to see if accuracy
suffers.