[CAD_CAM_EDM_DRO] EMC home/limit switch quality

Well I am trying to get ready for an EMC test here.
Mechanically I am just about done.

About the only mechanical thing left is verifying true
90 degrees (or other number with soft correction) between
axes before I tighten the bolts and pin 'em. I have a way, but that is
another story.

Plenty of wiring to do though.

Right now I have a box full of microswitches in the electronics lab and want
to use them. I do not consider them a precise
method of localization though.

For homing I always used the method of detecting a home
switch then reversing to the next index pulse of the encoder
for accuracy. (tech80 boards) All my encoders have an index channel.

I need to know where to stick these switches for emc.

I read the archives some and am aware of the home offset
parameter and the shared single home input issues.

I just still want to use an index pulse for home as before so I
don't have to worry about mechanical home switch repeatability but I am not
sure emc is set up to do this.

If it is not... what if I logic anded a switch engagement
with an nearby index pulse? So the mechanical switch would
just enable the next index pulse detection for the single home input
(without a direction change). Then offset to get off the switch and next
axis.

Sound like a plan?

Do I need to do this or can emc deal with it soft?

Thanks,
les

Leslie Watts
L M Watts Furniture
Tiger, Georgia USA
http://www.rabun.net/~leswatts/wattsfurniturewp.html