The Shop > CNC
Calling MACH 3 experts
awemawson:
Well I've not implemented either of those two suggestions yet as I spent the day revising the wiring and altering it a bit. I'd slavishly copied the original, but now looking at it, the enable signal to the break out board was being taken away at the same time that eStop was asserted, so eStop never got passed on to Mach3 !
A little re-jigging and now MACH3 happily goes into eStop when the panic button is pressed, and MACH removes enables from the drives.
Next thing to look at is the homing and over travel switches. I seem to remember reading somewhere that having all the limit switches in series is the best way to go as MACH3 stops motion when any limit is reached, but I'd welcome comments from the more knowledgeable :scratch:
Given a bit of time I will implement the screen mod but time is against me at the moment.
To prove it was all working after the re-wire I cut a little memento out of 3/8" plate for my Son and Daughter in law to remind them of their recent wedding - another thing to gather dust :lol:
awemawson:
Can anyone spot the (not deliberate) mistake on that memento ?
:bang: :bang: :bang: :bang: :bang:
David Jupp:
Remember the future eh....
The limit switches in series is I think largely related to the small number of inputs available on parallel port (5 I think), wiring in series uses only a single input - it is also a very simple way to get a common action on hitting any limit.
If your hardware easily provides for more inputs, you might want to have separate limits to give improved diagnostics. I must admit I haven't looked into configuring that (if anything 'clever' is required).
seadog:
Is this their future recent wedding you're referring to Andrew :)
awemawson:
That's the one !
Error corrected - drawn in Inkscape I'd only saved it as an image and not the original text, so to remove the excess "I" I had to place a white box over it :bang:
Still it's all a learning exercise :ddb:
The other one will do for their first wedding anniversary :lol: :lol: :lol:
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