Re: which commercial linear scale for EMC & S2G card?

[Doug Fortune <pentam-at-home.com>]

Jon Elson wrote:

> Doug Fortune wrote:
> > I'm sure this has been answered before (ie before
> > I joined the list), but it looks like I will be needing
> > to get direct linear feedback into EMC.

> You need an encoder counter card.  The Servo-to-Go card is currently supported.

I am assuming we are talking about a linear scale attached directly to
each axis.  I understand the S2G card can count encoder blips
but I had assumed that was for rotary encoders only,  attached
to the screw (and hence not guaranteed to be reading the position
of the table).   You are implying that linear encoders do the
same thing as rotary encoders,  and that the S2G is compatable
with them as well.

Or in other words, I am to find out whose 52" linear scales are
compatable with S2G's card.

**** Can someone save me the "experimentalism" and recommend a
vendor for the linear scales (which has been tested successfully with
the S2G cards and Linux/EMC) ?   *****

> I believe that a cheaper, ISA-bus encoder counter card is either just now
> supported, or will be, soon.

Where can I find more information about the ISA encoder card?

Tx
Doug