Re: [CAD_CAM_EDM_DRO] Re: Which controller card for EMC?

On Wednesday 28 September 2005 18:20, Jim Colley wrote:
> > Emc does not support dual loop encoding. The cards do not
> > have sufficient encoder inputs anyway.
> >
> > But that could be changed...
>
> This is actually why I was looking at the Vigilant card now as well. It
> is *very* expandable up to about 20 axes or so. Each add-on module
> gives your four more axes and 8 dio. Now if they just made the drivers...

Played around with the Vigilant stuff a few years ago - Reasonably well made
and loads of IO options on the expander card. A couple of things I didn't
like.. The cabling, connectors, and breakout boards were a significant cost
of the installation. There was also a problem with some of the chips running
excessively hot (in my opinion). I believe this last problem has been
addressed in recent revisions.
Even so, I feel a pair of Vital cards plus one of the many 8255 based IO cards
would give better value for money for the same results.

As for dual encoder inputs - There are motion control cards that do support
just such a feature. Expensive, requiring bespoked software for many
applications, but they are out there.

Catch me on IRC at an earlier hour, and I may be able to answer some of your
questions.


Regards, Paul.


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