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  1. #1
    Join Date
    Jan 2010
    Posts
    6

    Limit Switch Software Problem

    I recently rewired my limit switches to free up a pin for an emergency stop button and auto zeroing and now each time I engage a limit switch it doesn't allow me to reset the switch automatically and I have to go back into Config - Ports and Pins in Mach 3 to disable them each time before I can reset my cnc machine. I was previously able to do so via a warning screen that showed me that a limit switch was triggered and asked me if I wanted to reset the switch automatically. I'm not sure why this is happening now and don't want to waste a lot of time trying to figure this out myself. Is there anyone that has had a similar problem or that can give me a hand with solving this problem for me. Thanks in advance for any assistance that you can provide.

  2. #2
    Join Date
    Mar 2003
    Posts
    35538

    Re: Limit Switch Software Problem

    Do you have Automatic Limit Override turned on?
    Or have you tried Manual override?
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  3. #3
    Join Date
    Jan 2010
    Posts
    6

    Re: Limit Switch Software Problem

    Quote Originally Posted by ger21 View Post
    Do you have Automatic Limit Override turned on?
    Or have you tried Manual override?
    I have corrected the problem myself and I did have it set on manual limit override. Thanks for your reply.

  4. #4
    Join Date
    Aug 2017
    Posts
    12

    Re: Limit Switch Software Problem

    Hi everyone am a newbie and in need of help
    On how to wire up limit switches to my new
    Cnc 6040z USB 3 axis machine ?
    The board in the black box is JP-3163B with
    Optional A-axis connectors or (4th axis) now there's
    Connectors on it which I don't know where or
    how to connect 2(limit switches) on each axis???? Please help

  5. #5
    Join Date
    Mar 2007
    Posts
    2083

    Re: Limit Switch Software Problem

    is this your board ???


    Attachment 370550

    (first web search result for JP-3163B)



    john

  6. #6
    Join Date
    Aug 2017
    Posts
    12
    The board you showed me is similar, im send
    pic attachments of actual board and also a single
    Stepper motor card for the A axis I bought that I
    Want to connect ..also mine has only one big parallel
    DB connector and no db 9...

  7. #7
    Join Date
    Mar 2007
    Posts
    2083

    Re: Limit Switch Software Problem

    combining the information I found on the web with your second photo

    I would connect the limit switches like this for the first 3 axis

    Click image for larger version. 

Name:	photo 2 plus limit switch detail.jpg 
Views:	0 
Size:	154.3 KB 
ID:	370612


    when you add the 4th axis

    you could either use the input labled probe if your not using a probe

    Click image for larger version. 

Name:	4 axis limits.jpg 
Views:	0 
Size:	154.4 KB 
ID:	370620
    or
    combine the 4th axis switches with one of the other axis limit switches
    Click image for larger version. 

Name:	probe & 4 axis limit switch detail.jpg 
Views:	1 
Size:	155.5 KB 
ID:	370622

    I can not add more detail to this diagram to connect the 4th axis driver
    without detailed photos of the connectors
    or the user manuals for the 3 axis board and the single axis driver

    Attachment 370614

    Click image for larger version. 

Name:	connecting 4th axis 2 .jpg 
Views:	0 
Size:	104.8 KB 
ID:	370618

    John

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