19877
« on: March 12, 2009, 10:31:35 AM »
The ideal setting for the Debounce Interval is zero but you need to have everything wired well when it comes to the shielding for you to get that. Routing the limit cables close to any power cables can cause a fair amount of noise and Mach is very sensitive at picking up limit signals and it seems to be the case with yours.
I have the limits on my Lathe and Beaver Mill on 24v and change this to 5v just prior to the signal entering the breakout board, 24v is much more imune to noise than 5v for the simple reason that the difference between Hi and Low is much greater in the 24V system.
My Bridgeport just has 5v to the optical limits but I took care to shield the wires properly and tried to keep them routed away from mains wiring, I have the debounce as zero, so it shows that it can work. If setting the debounce to 2000 helps then its time to look at the shielding and cable routing.
Hood