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Thread: Need Help - Final steps before movement

  1. #13
    Registered Benonymous's Avatar
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    Here's the internals of a standard single pole, double throw microswitch. You will see that in the relaxed state, the NC connection is made to the COM connection. When the switch lever is operated, the connection to the NO contact is made. Depending on how you want the software to behave when the switch is operated will make you use a combination of either the COM and NO contacts (switch conducting when operated) or the COM and NC (switch conducting at rest) my guess is that you want the switch to work when activated so use the COM and NO terminals.




  2. #14
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    Actually, for the G540 you want a normally closed Estop!!!!



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    His switch doesn't have a COM terminal, just two sets of NO and NC terminals.



  4. #16
    Registered Benonymous's Avatar
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    So its double pole single throw, strange. Do these come as part of a kit? Seems like a very non-standard switch.



  5. #17
    Community Moderator Al_The_Man's Avatar
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    Quote Originally Posted by Benonymous View Post
    So its double pole single throw, strange. Do these come as part of a kit? Seems like a very non-standard switch.
    Actually this is very standard for a push button switch, whether E_stop or normal operator P/B.'s also many of the component type such as Telemecanique, Square D etc have blocks that can be added or stacked in N.O. or N.C. configuration.
    What you are showing is the norm for limit/micro switch action types.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    Alright so I solve the issue with the e-stop. Thanks Al.

    The next step is getting the motors moving with mach. Any threads that would help a beginner get moving?



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    This thread has already been pointed out to you. It's probably what you are looking for
    http://www.cnczone.com/forums/diy-cn...ecko_g540.html



  8. #20
    Member BanduraMaker's Avatar
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    There's one last thing I needed to do to get the e-stop working correctly with my G-540.

    In the General Config page, there is a checkbox labeled "ChargePump On in E-stop" which should be checked.

    With this box checked and the e-stop enabled in the Ports and pins page, Mach 3 will recognize when you press the e-stop button.

    Without this box checked, you can't get Mach 3 out of e-stop if the e-stop function is enabled in ports and pins.

    If you disable the e-stop input (use emulated only) the e-stop will work on the G540 but, Mach 3 won't realize that an e-stop event has occurred when you hit the switch.

    At least, that's what my experience with it was.

    Seemed weird to me but it worked.

    -Andy B.
    http://www.birkonium.com CNC for Luthiers and Industry http://banduramaker.blogspot.com


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Need Help - Final steps before movement

Need Help - Final steps before movement