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Author Topic: touch probe install on mack 3  (Read 397 times)

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Offline jon b

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touch probe install on mack 3
« on: August 25, 2020, 04:16:37 AM »
Hi guys please excuse  me if this is not directly connected to mack 3 but i would like to install a touch probe to the interface board on my cnc , my problem is i have used all 3 available inputs 10/13/15 for limit switches xyz . is there a way to loop the 3 switches to one available input thus freeing up 10 or 15 and how may i do this ?
kind regards Jon
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Offline Tweakie.CNC

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Re: touch probe install on mack 3
« Reply #1 on: August 25, 2020, 04:47:59 AM »
If your limit switches are wired N.C. (normally closed contact) then just connect all three switches in series and then connect to just one input.

(If your switches are wired N.O. (normally open contact) then the switches are connected in parallel)

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Offline reuelt

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Re: touch probe install on mack 3
« Reply #2 on: September 12, 2020, 09:09:37 PM »
Hi guys please excuse  me if this is not directly connected to mack 3 but i would like to install a touch probe to the interface board on my cnc , my problem is i have used all 3 available inputs 10/13/15 for limit switches xyz . is there a way to loop the 3 switches to one available input thus freeing up 10 or 15 and how may i do this ?
kind regards Jon
What model BOB are you using?
It may be cheaper to change the BOB to one with 4 or more inputs
or
If using parallel ports, add another PCI parallel port card + another $10 BOB for MORE inputs and outputs.
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Re: touch probe install on mack 3
« Reply #3 on: September 24, 2020, 09:28:30 AM »
hi mike c here hookup z touch probe (i watch a video from guru brew) but when i touch the ground lead to the spindle the limit switch trips
and the digitized button is on when i touch the probe ground to the plate it goes off
can you help thanks mikec

Offline ZASto

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Re: touch probe install on mack 3
« Reply #4 on: September 24, 2020, 10:26:07 AM »
Config -> Ports & Pins -> Input Signals
Check the state of Probe input. If needed, check Active Low to reverse behavior of your probe.
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