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« on: September 16, 2013, 01:03:25 PM »
Hi all,
I'm having an intermittent problem with false e stops at random occurrences during jobs. 'external e-stop' warning is displayed in mach 3, which I can then reset. It is not due to limits, it's just the external e stop. I'm using a gecko g540 and a smoothstepper. I have the e-stop pin of the gecko (pin 10) connected to a rocker switch on my enclosure, with the second terminal wired directly to my power supply negative. I just use this like an enable switch and I have a separate e stop on the enclosure power input. Would this false e stop come from a false low on pin 10 through noise? It is very sporadic, happened twice today and 3 times about 2 weeks ago, both times it repeats and then for days I have no trouble. I have just set the mach 3 input debounce to 2000 to help deal with noise. Could the 'external e stop requested' come from anything else other than this input? Is it possible to record the input states over time to identify if it is noise on this input? Would a small inline capacitor between my rocker switch and pin 10 work/help? I have run a break in wizard for 4 hours today, with debounce at 0, with no problems. It's so frustrating when problems are not regularly reproducible. When this occurred earlier today, I reset the estop and restarted the job from the line of G code I was on pressing 'start from here', only this started the toolpath from the beginning but from the location the spindle was in....wasted a nice plank of french oak (why couldn't it have been mdf!!!). Is there a way to continue a toolpath from the position of the stall/fault?
Any help with this would be very much appreciated, I'm really tearing my hair out!