Can you use a magnetic reed switch for the inputs? (24v) We use one like
you are talking, pneumatic, swing, then clamp, but it uses reed switches
for the open/closed detection. I can't think of the name at the moment,
but it will come to me.

Something like that... The drill I provided has a dry contact proof of
return switch so I'm looking for something I can put in series with that so
that BOTH (or actually ALL since there are more than one clamping locations)
have to be made for the circuit to be completed and thus the signal received
at the PLC to proceed.
--


Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R