Machsupport Forum
Mach Discussion => Mach4 General Discussion => Topic started by: rhtuttle on February 14, 2021, 02:15:52 PM
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Usual disclaimer...I'm electronically challenged.
Using Mach4 and Pokeys57cnc on a G0704 converted mill, manual tool change. I have a probe that is working for probing material and now want to add a tool height touch off.
Attached are photos of the electronics and PoKeys and Mach4 settings. You can see the ribbon connections and the red line. I think those are oriented correctly. The blue wires are attached to pins 17 and 6 on the db25 connector and I get a full 5 volts through. Can anyone tell me why I cannot get the Pokeys or Mach to read a change when contact is made with the wire ends?
Any help is greatly appreciated.
RT
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not really sure how you are setup don't see the pokeys57cnc
But i have the probe wired to input pin 19 on the pokeys board, also some of the older boards needed a resistor 1k or so.
its been a while so don't remember if it was a pullup or pulldown resistor..
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i didn't understand from yours question ,do you already have one prob work well now you want add one more?
as i know pokeys support only one probe
you can try connect both prob same input ,in any case they not working same time
**why you use printer connector?
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not really sure how you are setup don't see the pokeys57cnc
But i have the probe wired to input pin 19 on the pokeys board, also some of the older boards needed a resistor 1k or so.
its been a while so don't remember if it was a pullup or pulldown resistor..
I have rev 1.5 so in theory its not supposed to need one. I too have pin 19 going to probe for my edge/surface probe and that works fine.
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i didn't understand from yours question ,do you already have one prob work well now you want add one more?
as i know pokeys support only one probe
you can try connect both prob same input ,in any case they not working same time
**why you use printer connector?
Certainly makes sense to use the same probe connection for both probes. Problem is that one is NO and the other is NC. I guess I could add a button script that changes the probe signal to high or low as needed and a 2 position switch to select which probe is active. More things to forget and go wrong.
I thought I should be able to use any free input to use for another probe signal g32.1, g32.2, g32.3....but I have been wrong before. ;)
RT
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No my freind electric rules ,if you want use 2 probe same input , parallel ,only NO can use ,if you want tske chance can use both in line and then both shuld be NC
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you can use a relay for invert the signal work very well for me
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I don't think relay good ide,its probe and relay response time not presics
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i use it with a 3d probe result are very good after calibration
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If you look at 24dc relay response time you can see first its "up too" that mean not constant ,and its 15ms or 6 ms i think its not long time but its can make problem with tool length measure
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Did you resolve your issue?? I'm on the same boat, I do have auto Z probe and I do want to add extra corner finder probe, I can see the LED working fine in MACH4 but it's not doing any probing. So signal is reaching MACH4 but nothing is happening.