Re: PCI 4 axis step and direction board

Howdy..

I bought a PCI card for OPTO-22 products, it has 24 fixed I/O. Problem with
some software is the addresses it sets at. I have a couple of the older ones,
that fit a isa slot.. I have used them a lot with the pamux type I/o

I use a 7414 hex inverter (simple to make) hooked to step/dir pins on my
machine. It invertes and has a schmitt trigger output and helps to isolate the
parallel port from the drives.. As you probably know you have to invert the
signal to a sinking signal and the port by my meter is a positive one.. THEN
using the old legend 4 I/O opto cards bought on ebay I input the home
switches and output the drive signal for the inverter, coolant and
accessories.. this way you don't hardly have anything in your logic system..
Opto-22 boards go for less than $10 on ebay. There are different types thou,
negative and positive logic.. you have to read the pdfs online..

David..




--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ballendo" <ballendo@y...>
wrote:

> Hello,
>
> The only folks I know selling driver cards like this these days are
> Microkinetics and Arrick robotics... (both are isa or eisa, not PCI)
>
> Though I'm sure there are others. Less than before, though. Most have
> gone to external drives.
>
> Now if you mean a motion contol card, rather than a drive card... I
> don;t know of ANY that can compete price wise with the s/w based pc
> controllers. Feature-wise, some can still top the s/w solutions. But
> not in "cheap" price range, IMO.
>
> Hope this helps,
>
> Ballendo
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, tommy clay

<tclay_35117@y...>

> wrote:
> > anybody know a good inexpensive PSI (can also use ISA)
> > step and direction board for CNC?
> >
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