On Tue, 10 Nov 2009, Pat Lyons wrote:
> Date: Tue, 10 Nov 2009 11:40:35 -0500
> From: Pat Lyons <p27...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] Anilam linear encoder OUTput...
>
> my photo attachment of the red slide unit was rejected cause it was too big
> a file.
>
> I have a new question though-
>
> is it possible that these encoders can be counted on both the rising and
> falling edge of both signals?
> in other words:
>
> if I count the falling edges on one wire as *640 falling edges per inch*,
> does this actually mean its *640 x 2* for rising and falling edges? then x2
> again for two signal quadrature? or is the quadrature pair only to provide
> direction information?
Yes, quadrature counters normally count all edges, so your 640 line per inch
encoder would have 2560 quadrature counts per inch.
>
> thanks!
> -pat
Peter Wallace
Mesa Electronics
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