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  1. #1
    Join Date
    Sep 2008
    Posts
    3

    Unhappy Enable how????

    Just recently I bought a 3 axis cnc board which was tested and does work on kcam. I myself have tested the board on a trial of kcam and it does work.
    Here is the million dollar question, the pin setup calls for an x Ebable (as for y and z). I've tried to leave the pins that call for " (x,y,z) Enable" as unused but to no avail. From what information I have seen my answer lies with Hal. I have no clue what to do in order to get my board working with emc2. Whats more my board's manual was translated from spanish to english, which = alota giberish.

    Thanks in advance!
    here is my board's called for pin setup

    1 OPORT+20INVERTEDSPINDLE RELAY
    2 OPORT0 NORMALX-STEP
    3 OPORT1 NORMALX-DIR
    4 OPORT2 NORMALX-ENABLE
    5 OPORT3 NORMALY-STEP
    6 OPORT4 NORMAL Y-DIR
    7 OPORT5 NORMAL Y-ENABLE
    8 OPORT6 NORMAL Z-STEP
    9 OPORT7 NORMAL Z-DIR
    10 IPORT+16 NORMAL NU
    11 IPORT+17 INVERTEDX-HOME SWITCH
    12 IPORT+15 NORMAL Y-HOME SWITCH
    13 IPORT+14 NORMAL Z-HOME SWITCH
    14 OPORT+21 INVERTEDZ-ENABLE
    15 IPORT+13 NORMAL NU
    16 OPORT+22 NORMALM CODE FUNCTION
    17 OPORT+23 INVERTEDM CODE FUNCTION

  2. #2
    Join Date
    Mar 2008
    Posts
    267
    If the pins are ENABLE active high then leaving them unconnected may in fact not enable axes.

    You need to connect the enable pins to a logic high in order to get them going.

    In the first instance take a voltmeter ( set it to DCV ) and measure the voltage on ENABLE pins with board powered up and nothing connected to pins.

    It should probably read less than 1 volt.

    Take a resistor of a few hundred ohms ( just to contain smoke on the input ) and hook it up to +5v and the pin and again measure pin voltage.

    Should be close to 5 Volts and the axis should be active.

    If the voltage is below four volts then you will need a buffer to drive the enable pins.

    Solution 1) permanently tie the enable to +5volts... may be an unsafe option.

    Solution 2) tie enable to +5 volts via E-Stop pushbutton activated relay

    Solution 3) In configuration wizard you will be able to select which pin from paralle port is machine enable ( sorry do not have software to hand to check exact name) Feed the enable pin signal via a buffer and through E_Stop activated relay to the axis enable pins.


    E-Stop interlock gives you added level of safety.

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