Home and Limit switch wiring assistance needed.

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Thread: Home and Limit switch wiring assistance needed.

  1. #1
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    Default Home and Limit switch wiring assistance needed.

    Hi, been lurking here a while. Finally got a CNC router. It is a Blackfoot DIY machine. I got it used and disassembled. I am not exactly sure why the wiring was removed completely before disassembly but it was. I have most of it wired up and can actually make sawdust now.
    I found quite a few threads, but not exactly what I was looking for and didn't want to resurrect a post from 2006. (maybe I'm not searching the right keywords)
    Anyway I really want to get the home and limits working, right now all I have is the E-stop switch.

    I have the CNC4PC C1 Parallel BoB. Currently I have E-stop on 10 and 13 has a jumper (that was in place) which from the settings in Mach3 is the limit switches. 15 is set as probe for zeroing
    I have 2 switches on each axis and was thinking I could use one on each axis as the home switch. I wired the other 3 in series as NC and they work.

    I wired the other 3 in Parallel to be my Home switches, my problem is I don't have enough inputs for everything.

    I have 5 available, but have six things to input.

    I guess my question is can the E-stop and the Limit switches share one input? That would leave me 3 for home and 1 for probe.

    another thing, the wiring diagram i found from Jerry Clark /2006 shows 3 switches per axis. Should I go ahead and put in a 3rd switch or is 1 home and 1 limit per axis enough?


    Thanks

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  2. #2
    Community Moderator ger21's Avatar
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    Default Re: Home and Limit switch wiring assistance needed.

    You could wire all of the switches to a single input, as long as you only home one axis at a time.

    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
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    Default Re: Home and Limit switch wiring assistance needed.

    So If I wired them all in series and I hit ref all to home that could cause a problem. I should just home one axis at a time?
    on a side note, how often do you home each axis? I've just been zeroing each axis to whatever piece I'm cutting.
    Thanks



  4. #4
    Community Moderator ger21's Avatar
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    Default Re: Home and Limit switch wiring assistance needed.

    If you use the default homing script, it won't cause any problems, because by default, they home one at a time.

    I home my machine when I turn it on, and run all my parts from the home position.

    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)


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Home and Limit switch wiring assistance needed.
Home and Limit switch wiring assistance needed.