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« on: June 01, 2019, 03:08:54 PM »
i have been using the following script i got from youtube for auto zero .
you have a plate a certain thickness the tool will touch retract then come in slow ,retract add the plate thickness and give you a z height from the part .
i have used this a few times on my mill.
i have an issue either with the script or my set up .
every now and again it touches , stops but instead of retracting it up .it goes in the opposite direction and pushes into the plate .for me z zero is top of stock
any ideas??
i have been using the following script i got from youtube for auto zero .
you have a plate a certain thickness the tool will touch retract then come in slow ,retract add the plate thickness and give you a z height from the part .
i have used this a few times on my mill.
i have an issue either with the script or my set up .
every now and again it touches , stops but instead of retracting it up .it goes in the opposite direction and pushes into the plate .for me z zero is top of stock
any ideas?
i have been using the following script i got from youtube for auto zero .
you have a plate a certain thickness the tool will touch retract then come in slow ,retract add the plate thickness and give you a z height from the part .
i have used this a few times on my mill.
i have an issue either with the script or my set up .
every now and again it touches , stops but instead of retracting it up .it goes in the opposite direction and pushes into the plate .for me z zero is top of stock
any ideas?
REM Updated 30 Aug 2018
REM Auto Tool Zero Z- Metric 2 pass Version
REM Based On the BigTex script
REM (09 Feb 2018) Hint added To Material Thickness offset request box.
REM (20 Feb 2018) Request To touch the touch the touchoff plate To the bit To start probing added. Thanks To Glen Higgs For this addition.
REM (27 Jul 2018) Minor changes To Error Handling And Grammer correction
REM (30 Aug 2018) Feedrate override safety Reset And restore added.
PlateThickness = 19.86 'Enter Z-plate thickness here
DownStroke = -100 'Set the down stroke to find probe
DownFeedRate = 250 'Set the down FeedRate
RetractStroke = 10 'Set the retract Stroke
RetractFeedRate = 1000 'Set the retract FeedRate
SmallRetractStroke = 1 'Retract 1mm for a 2nd pass
SmallDownFeedRate = 25 'Set the slow down FeedRate for 2nd pass
SmallDownStroke = -(SmallRetractStroke *2) 'Set down stroke for 2nd pass as twice the retract distance.
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
CurrentFeedOverride = GetOEMDRO(821)'Get current Feedrate override setting
REM Request Material Thickness offset
Offset = InputBox("Enter Material Thickness offset Hint: To probe from the Spoilboard surface, enter the nominal thickness of the material. Enter '0' or leave blank if probing from the material surface", "Material Offset", "")
REM Touch plate To Cutter To Begin probe.
message "Briefly touch the plate to the bit to start probing for zero."
Touched_Flag = False
count = 40
seconds = 60
For i = 1 To 600
If GetOEMLed(825) <> 0 Then
Beep
Touched_Flag = True
Exit For
End If
count = count - 1
If count = 0 Then ' 1 second elapsed
count = 40
seconds = seconds -1
End If
Sleep 25
Next i
If Touched_Flag = False Then
message "The Auto Zero timed out, no touch detected"
Exit Sub
End If
REM 1st Pass at fast rate
sleep 2000 'give time to remove block from tool and position
REM Code "(Z axis 1st pass)" 'puts this message in the status bar
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 P2" ' this delay gives me time to get from computer to hold probe in place
SetOEMDRO(821,100) 'Reset feedrate overide to 100% for safety
Code "G90 G31 Z" &DownStroke &" F" &DownFeedRate 'probing move
While IsMoving() 'wait while it happens
Wend
ZProbePos = GetVar(2002) 'get the exact point the probe was hit
If Abs(ZprobePos) <= Abs(DownStroke)-0.1 Then 'Check if the probe has been found
Code "G0 Z" &ZProbePos 'go back to that point, always a very small amount of overrun
While IsMoving ()
Wend
Call SetDro (2, 0) 'set the Z axis DRO to whatever is set as plate thickness less the offset value
Code "G4 P0.25" 'Pause for Dro to update.
Code "G1 Z" &SmallRetractStroke &" F" &RetractFeedRate 'retract
While IsMoving ()
Wend
REM Code "(Z axis 2nd pass)" 'puts this message in the status bar
Else
Rem Code "G0 Z0" 'retract to start pos
While IsMoving ()
Wend
Code "(Z-Plate not found, check connection or stroke and try again)" 'puts this message in the status bar
Code "F" &CurrentFeed 'Returns to prior feed rate
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
Exit Sub
End If
Else
Code "(Z-Plate is grounded, check connection and try again)" 'this goes in the status bar if aplicable
End If
Code "F" &CurrentFeed 'Returns to prior feed rate
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
REM 2nd pass at slow rate
DoOEMButton (1010) 'zero the Z axis so the probe move will start from here
Code "G4 P1" ' this delay gives me time to get from computer to hold probe in place
Code "G90 G31 Z" &SmallDownStroke &" F" &SmallDownFeedRate 'probing move
While IsMoving() 'wait while it happens
Wend
ZProbePos = GetVar(2002) 'get the exact point the probe was hit
If Abs(ZprobePos) <= Abs(SmallDownStroke)-0.1 Then 'Check if the probe has been found
Code "G0 Z" &ZProbePos 'go back to that point, always a very small amount of overrun
While IsMoving ()
Wend
Call SetDro (2, PlateThickness - offset) 'set the Z axis DRO to whatever is set as plate thickness less the offset value
Code "G4 P0.25" 'Pause for Dro to update.
Code "G1 Z" &RetractStroke + PlateThickness &" F" &RetractFeedRate 'retract
While IsMoving ()
Wend
Code "(Z axis is now zeroed)" 'puts this message in the status bar
Else
Code "G0 Z0" 'retract to start pos
While IsMoving ()
Wend
Code "(Z-Plate not found, check connection or stroke and try again)" 'puts this message in the status bar
End If
Code "F" &CurrentFeed 'Returns to prior feed rate
SetOEMDRO(821,CurrentFeedOverride) 'Return feedrate override to previous value
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
Exit Sub
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