On 2010-12-17, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus6780 fired this volley in
:

I would like to count the index pulses separately
and compare index count with the angular position oft he spindle. They
should always stay within "1" of each other, if no counts are missed.

I have not yet figured out how to do it.

Am I missing something, Ig?

How else would you determine the angular position of the spindle without
the encoder? I thought that's what it _did_.(?)

Well, the basic equation is that there is a full revolution of the
encoder between the index pulses. If EMC2 sees a different number of
pulses than 4096 (4096 pulses make a full revolution of the encoder),
between two index pulses, thos would mean that pulses are missed. This
is what I want to check somehow.

i

(You do have a "zero index" on that encoder disk, right?)
LLoyd