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Thread: autotoolzero

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  1. #1
    Join Date
    Mar 2011
    Posts
    24

    Question autotoolzero

    I am still having a problem with my z axis. After initiating the auto zero tool in Mach3 the motor is retracting up to set height before it goes down to touch plate. My programs run fine but I have to use the paper under the bit method. I had changed out the drive. It worked fine before. I am totally frustrated...Please help Here is the VB script:

    CurrentFeed = GetOemDRO(818) 'Get the current feedrate to return to later
    CurrentAbsInc = GetOemLED(48) 'Get the current G90/G91 state
    CurrentGmode = GetOemDRO(819) 'Get the current G0/G1 state

    If GetOemLed (825)=0 Then 'Check to see if the probe is already grounded or faulty
    DoOEMButton (1010) 'zero the Z axis so the probe move will start from here
    Code "G4 P3" ' this delay gives me time to get from computer to hold probe in place
    Code "G90 G31Z-4. F4" 'probing move, can set the feed rate here as well as how far to move
    While IsMoving() 'wait while it happens
    Wend
    ZProbePos = GetVar(2002) 'get the exact point the probe was hit
    Code "G0 Z" &ZProbePos 'go back to that point, always a very small amount of overrun
    While IsMoving ()
    Wend
    Call SetDro (2, .250) ' change .060 to your plate thickness and then adjust for final accuracy
    Sleep 200 'Pause for Dro to update.
    Code "G1 Z1. F50" 'put the Z retract height you want here, must be greater than the touch plate thickness
    While IsMoving ()
    Wend
    Code "(Z axis is now zeroed)" 'puts this message in the status bar
    Code "F" &CurrentFeed 'Returns to prior feed rate
    Else
    Code "(Z-Plate is grounded, check connection and try again)" 'this goes in the status bar if applicable
    End If
    If CurrentAbsInc = 0 Then 'if G91 was in effect before then return to it
    Code "G91"
    End If
    If CurrentGMode = 0 Then 'if G0 was in effect before then return to it
    Code "G0"
    End If

  2. #2
    Join Date
    Mar 2003
    Posts
    35538

    Re: autotoolzero

    Try jogging close to the plate, then zeroing the Z axis, then running the auto zero.

    It's bad code, that could move up or down, depending on the Z axis coordinate.
    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
    Mar 2011
    Posts
    24

    Re: autotoolzero

    Yes I have done that. I position about an inch above plate but still retracts. Could be wiring problem with probe and breakout board. I have the plate on the input 13 and the other from the clip to 5v or board. Not sure what to do.

  4. #4
    Join Date
    Mar 2003
    Posts
    35538

    Re: autotoolzero

    Could be wiring problem with probe and breakout board.
    If it were you'd get an error message.
    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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