g540 pin connection question


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  1. #1
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    Default g540 pin connection question

    On the g540, the parallel port pins 10-13 are labeled input 1-4. The main terminal block also has input 1-4 (pins 1-4). The main terminal block indicates that these are the same thing.
    The main terminal block has a spot for the E-stop switch, pin 10, also labeled Disable Input. Is there a corresponding pin on the parallel port? Fault?

    Thanks,
    Steve

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  2. #2
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    Default Re: g540 pin connection question

    What I'm trying to do is set up LinuxCNC, the stepconf table of parallel port wiring.

    Steve



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    Default Re: g540 pin connection question

    Pin 15 on the DB25 connector (parallel port) is labelled as Fault which is an input to the PC.
    See G540 documentation, page 7.



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    Default Re: g540 pin connection question

    Yes, that's what it says. The Gecko DB25 pinout shows FAULT on pin 15. The Gecko 12 pin Main Terminal Block shows DISABLE INPUT (E-STOP) on pin 10. Clearly I connect my e-stop switch between pin 10 and ground at the g540.
    What does FAULT on the DB25 mean?
    What do I set pin 15 of my parallel port to? There is no FAULT setting. There is E-STOP IN, ALL LIMITS, and UNUSED.
    That is my question. The g540 documentation does not explain.

    Thanks,
    Steve



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    Default Re: g540 pin connection question

    Pin 15 is used to signal the PC that a fault condition has occurred. i.e. emergency stop button pushed.

    Here's a troubleshooting procedure from Mariss:

    Here is a sure-fire test for the E-stop to Mach3 feedback.

    1) Remove all DB9 and DB25 cables from the G540.
    2) Set the slide switch to IGNORE CHARGE PUMP.
    3) Jumper DISABLE term 10 to terminal 12.
    4) Connect power supply to terminals 11 and 12. You should get a green LED.
    5) Measure the voltage on DB15 to DB25 gnd. It should be 0VDC.
    6) Disconnect DISABLE jumper. You should get a red LED.
    7) Measure the voltage on DB15 to DB25 gnd. It should be 3.3VDC or more.

    If you get those results then the G540 is sending an E-stop signal back to Mach3.

    Mariss




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    Default Re: g540 pin connection question

    Thanks, that is what I wanted to know.



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g540 pin connection question

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