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Author Topic: External E stop  (Read 11707 times)

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Re: External E stop
« Reply #40 on: April 05, 2012, 03:47:54 AM »
Hi Seem to be getting a similiar problem, when running a program at any point in the program machine will stop saying "external estop requested"
I am almost certain this is down to noise on the pin because it is so random, any ideas how to stop this
many thanks
gary

Offline Hood

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Re: External E stop
« Reply #41 on: April 05, 2012, 03:52:17 AM »
Definitely sounds like noise, noise can be very random and only happen occasionally.
Have you tried increasing the Debounce Interval a bit?
Could also be a loose connection on a limit switch or E-Stop switch that only occasionally gets the right conditions to break contact for a split second but that is enough for Mach to see.
Hood
Re: External E stop
« Reply #42 on: April 05, 2012, 04:04:44 AM »
Hi Hood, checked all connections, at present have got all the e-stops wired out except on/off button, debounce now set at 3500, could noise be generated by static on the plastic dust extractor pipe, maybe run a ground wire in parallel with the extractor pipe to ground the machine head to the strap ground on the dust extractor, any thoughts
gary

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Re: External E stop
« Reply #43 on: April 05, 2012, 04:08:17 AM »
Proper shielding and grounding is always a good idea.
Although you didnt mention it, next time make ure there is not a watchdog  error, if there is then disable watchdogs in General Config

Hood
Re: External E stop
« Reply #44 on: April 05, 2012, 04:13:18 AM »
sorry to sound thick, where do i see watchdog error

Offline Hood

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Re: External E stop
« Reply #45 on: April 05, 2012, 04:15:07 AM »
It would be in the error message line.
Hood
Re: External E stop
« Reply #46 on: April 05, 2012, 04:18:22 AM »
never seen anything in error message about watchdog, it was active in general config, have disabled just to try
Re: External E stop
« Reply #47 on: April 05, 2012, 04:30:07 AM »
still not worked, going to get to work earth strapping everything
Re: External E stop
« Reply #48 on: April 05, 2012, 04:39:47 AM »
Hood
Thanks for your help, i'll post how i go on
regards
gary