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DennisF
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« on: September 10, 2011, 04:58:56 PM »

Hi Guy's
 I have a question for you mach guru's is there a way to stop mach feeding g-code when the drives fault out i hope i am getting my point across what happens is if the drives on my machine fault out mach keeps running the code and the part and now code won't match is i do a reset and run i have to try and set the start point and run the code until i get it to a point where i can check it's location then return to 0 make an adjustment and try it again it's a real pain thanks.


Rg's
Dennis   
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Hood
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« Reply #1 on: September 10, 2011, 05:27:46 PM »

If your drives have a fault signal you can feed that to Mach to do an E-Stop.
The way I do it is via my PLC, heres a screenshot of the E-Stop to Mach via my PLC but you could do similar with a Brain. I also have the enables to the drives in a similar fashion in the PLC so if a limit or E-Stop button or drive faults then enables are taken away from the drives.

Hood


* ScreenHunter_03 Sep. 10 23.26.jpg (31.08 KB, 1325x622 - viewed 22 times.)

* ScreenHunter_02 Sep. 10 23.25.jpg (48.34 KB, 1338x392 - viewed 23 times.)
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DennisF
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« Reply #2 on: September 10, 2011, 06:27:26 PM »

Hood
Thanks for the reply, i have all my drives linked together so if one drive faults they all go didn't want any thing moving and cutting in only one axis i have break out board in between my computer and the drives so i am not sure how this effects what you have pictured above or how it's done.

Thanks again for the help
Dennis
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Hood
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« Reply #3 on: September 10, 2011, 06:49:19 PM »

I take it your drives have a fault signal then? If so feed that to an input to Mach and have a brain look at that input and call an E-Stop.
Hood
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BR549
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« Reply #4 on: September 10, 2011, 08:46:42 PM »

Another trick is to bring your fauilt signal into the Estop input pin.

(;-) TP
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Hood
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« Reply #5 on: September 11, 2011, 04:23:25 AM »

Another trick is to bring your fauilt signal into the Estop input pin.

(;-) TP

Thats the preferred way I would say, its what I do but as I use a PLC its easy to have all sorts in the E-Stop string to Mach. I have dual E-Stop string, the one to Mach and the other to my drives contactors etc.

Hood
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DennisF
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« Reply #6 on: September 11, 2011, 12:55:51 PM »

Thanks guy's for the help
so then all i have to do is take one of the input line's in the Lpt port wiring and tie it into the fault wire is my thinking correct?

Dennis
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Hood
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« Reply #7 on: September 11, 2011, 01:15:29 PM »

or you could also put it in as Input 1 then enable the option on General Config page (lower left) That will stop code when the input is active however it will not E-Stop Mach.
Hood
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DennisF
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« Reply #8 on: September 12, 2011, 12:51:21 PM »

Hood
if i do the above on pin one it would stop Mach and the G-code feed at the time the drives fault correct ? that's what i wish to accomplish when and if the drives fault out mach stops the code from going any further it all comes to a stop at the same time.

Dennis
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Hood
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« Reply #9 on: September 12, 2011, 01:00:00 PM »

Yes thats what would happen, you just have to remember to rehome as you will likely have lost position but you would likely do that anyway. Personally I prefer Mach gets an e-stop but thats just my personal choice.
Hood
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