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Author Topic: External e-stop  (Read 5117 times)

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External e-stop
« on: June 26, 2012, 06:46:03 AM »
Please help, machine is driving me nuts
I run cutting and machining programs and no matter what g-code i run randomley my machine shuts down and says "External E-stop requested". I have wired out all the external stop buttons to eliminate this, checked all limit switches for loose cables or bad connections, fitted a large earth strap from the machine to fuse board ground. Debounce is set to 3500.  Don't know what else to check
Thanks in anticipation
Gary
« Last Edit: June 26, 2012, 07:00:27 AM by gaz221269 »

Offline Tweakie.CNC

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Re: External e-stop
« Reply #1 on: June 26, 2012, 07:50:14 AM »
Hi Gary,

Sometimes (depending on age / quality) limit switches can misbehave when subjected to vibration. Also electrical noise, picked up by the wiring can also cause false triggering.

I would be inclined to fit a 0.1uF miniature capacitor between each used input connection to your breakout board and GND.

Tweakie.
KEEP SAFE !
Re: External e-stop
« Reply #2 on: June 26, 2012, 08:50:26 AM »
Thanks Tweakie
I'll give it a go and post up what happens
Re: External e-stop
« Reply #3 on: June 26, 2012, 11:07:14 AM »
Further to my problems, when external e-stop has interupted my job, i then try to run from line so as not to start again and mach3 scrolls through my g-code problem and stops randomly at a line no where near where the run from line  should return to !!!!!!!!!!!!!!!!!!!!

Offline Hood

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Re: External e-stop
« Reply #4 on: June 26, 2012, 01:27:09 PM »
Are you licensed? RFH does not work in Demo mode.
Hood
Re: External e-stop
« Reply #5 on: June 28, 2012, 06:34:49 AM »
Hi Hood, yes running licensed, RFH??
Gary
Re: External e-stop
« Reply #6 on: June 28, 2012, 06:37:46 AM »
Sorry Hood
run from here
dohh

Offline Hood

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Re: External e-stop
« Reply #7 on: June 28, 2012, 06:58:56 AM »
If you attach the code and your xml I will have a look.
Hood
Re: External e-stop
« Reply #8 on: June 28, 2012, 07:29:20 AM »
Hi Hood, many thanks for this, i hope i have attached the correct files for you
Gary
« Last Edit: June 28, 2012, 07:33:27 AM by gaz221269 »
Re: External e-stop
« Reply #9 on: June 28, 2012, 09:00:44 AM »
Sorry Hood attatched the wrong xml file, this is the one we are using
regards gary