Here is the script code I use and it has always worked for me.
My plate is 1.5mm and it retracts 10mm from the plate.

I did notice that I have a line different to yours. I've highlighted it in red.
Maybe mine isn't correct, but it works.

CurrentFeed = GetOemDRO(818)
PlateThickness =  1.5
If GetOemLed (825)=0 Then
DoOEMButton (1010)
Code "G4 P2"
Code "G31 Z-5 F100"
While IsMoving()
Wend
ZProbePos = GetVar(2002)
Code "G0 Z" &ZProbePos
While IsMoving ()
Wend
Call SetDro (2, PlateThickness)
Code "G4 P0.25"
Code "G0 Z10"
Code "(Well done the Z axis is now zeroed)"
Code "F" &CurrentFeed
Else
Code "(Z-Plate is grounded, check connection and try again)"
Exit Sub
End If

No, you had this:
Call SetDro (2, .887402) 'set the Z axis DRO to whatever is set as plate thickness

It should be this:
Call SetDro (2, .787402) 'set the Z axis DRO to whatever is set as plate thickness

No, you had this:
Call SetDro (2, .887402) 'set the Z axis DRO to whatever is set as plate thickness

It should be this:
Call SetDro (2, .787402) 'set the Z axis DRO to whatever is set as plate thickness

Correct, but I had it with the .787402 before and then tried it again after you wrote this and it still does not retract.  If I put the .887402 it does not retract but the DRO will read the correct number.


so with the Call SetDro (2, .787402) 'set the Z axis DRO to whatever is set as plate thickness code the DRO reads .787402 and does not retract.

Thanks for the help,

Try this. You had some other issues in there as well:


Sub Main()

CurrentFeed = GetOemDRO(818) 'Get the current feedrate to return to later
PlateThickness =  0.787402
Retract = 0.10

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 "G31 Z-1 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 axact point the probe was hit
Code "G1 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
Sleep(250)
Code "G0 Z" & Retract 'put the Z retract height you want here
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
Exit Sub
End If

End Sub

No luck, it did not retract nor put any change in the DRO nor say "Z axis is now zeroed" at the contact.

Is there anything I needed to input into this code?

Thanks!

Are you sure your not running a different copy of this macro? It sounds like your editing a different macro then the one you're actually running.

Not sure, I am new to this but some changes make changes to the DRO so I assume it is in the correct place.

Click the button in the one area ( I forget the path) but all the buttons blink.  I click on the Auto Z one and an editor opens which I past the code and save.

Not sure if there is something else I need to do.

Are you using a parallel port, or a motion controller? If a motion controller, which one?
Which version of Mach3?

I use a parallel port with a Vista M1 usb pendant.

I use : Mach3Version3.043.062

Thanks!

I think in the "diagnostics" tab when I would make the connection between the plate and bit that a yellow light would also come on?  Now only a green light comes on when I touch the bit to the plate for a test?