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General Mach Discussion / Auto Tool Zero / Touch Plate issues
« on: July 24, 2013, 02:03:24 PM »
Hey all,
I've been trying to set up a touch plate, and having little to no success. I'm using the script that seems to have been going around for a few years:
The main issue is that GetVar(2002) always returns "0" regardless of where the probe touched.
Also, I hard-coded the plate thickness, since GetUserDRO(1151) also always returned "0" (I entered the thickness in both of the "Gage (sic) Block Height" DROs in the Offsets tab -- why are there two anyway?)
Any help is greatly appreciated.
I've been trying to set up a touch plate, and having little to no success. I'm using the script that seems to have been going around for a few years:
Code: [Select]
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
PlateThickness = .028 'Z-plate thickness DRO
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
Code "G90 G31Z-5 F5" '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 axact 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, PlateThickness) 'set the Z axis DRO to whatever is set as plate thickness
Code "G4 P0.25" 'Pause for Dro to update.
Code "G1 Z0.5 F10" 'put the Z retract height you want here
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 aplicable
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
Exit Sub
The main issue is that GetVar(2002) always returns "0" regardless of where the probe touched.
Also, I hard-coded the plate thickness, since GetUserDRO(1151) also always returned "0" (I entered the thickness in both of the "Gage (sic) Block Height" DROs in the Offsets tab -- why are there two anyway?)
Any help is greatly appreciated.
