Machsupport Forum
Third party software and hardware support forums. => SmoothStepper USB => Topic started by: joeharney100 on April 01, 2018, 07:46:01 AM
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Hi,
I've set my Mill with a ESS and everything is working perfectly, since I'm upgrading everything else I wanted to set up
an auto zero, I have my touch pad set up giving the input light at "digitize" lighting, everything was going great.
But when I added the script to the auto zero button and pressed it the following happens:
1 Press Auto Zero
2 Dwell
3 Zeros Z
4 Moves down
5 Touches plate
6 Stops
7 Moves back to where it had originally zeroed (STEP 3)
8 then retracts to the setting I had asked it to retract to
9 Stops says Z is Zeroed
So this is my problem the starting Zero is usless to me as it could be anywhere
Not know much about basic, here is the script that I got from Gurubrew on youtube which was a great video
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. F50" '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, 1.5) ' change 1.5mm 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
I had read on a differant post that the line that starts with "Call setdro (2,1.5) should be a 0 instead of a 2 but that didnt make any differance
Any help would be great
Thanks
Joe
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The 1.5 in this line needs to be changed to your touch plate thickness.
Call SetDro (2, 1.5)
Also, if you are using version 3.043.066, try using 3.043.062.
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The 1.5 on that line is my touch plate thickness 1.5mm
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Sorry and yes I'm using version 62
Thanks tho
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Code "G1 Z1. F50"
The Z1 here needs to be greater than the plate thickness, so it should be at least 2, but I'd set it to at least 10.
After the tool touches the plate, the Z DRO should be changed to 1.5. Are you seeing that happen?
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I'll have a look at that z1 when I get home but I think it's only a mistake from where I copied the script from because the original was in inches and I've changed the figures to metric, I do see the z dro go to 1.5 the second the spindle gets back to zero which is the original point I press auto zero, not at the top of the plate, if you understand me
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Just copied the script exactly from mach3 that i am using
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-100. F200" '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, 1.5) ' change 1.5mm to your plate thickness and then adjust for final accuracy
Sleep 200 'Pause for Dro to update.
Code "G1 Z25. F200" '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
it seem the z dro isnt zeroing when it touches the plate
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It should be setting the DRO to 1.5 when it touches the plate.
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Oh I know that but it's not doing it I'm afraid
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Ok with a little trial and error I got it to work
I removed the line "Code "G0 Z" &ZProbePos"
worked first time exactly right
if this could cause any problems that I'm not aware of let me know
but as it stands I'm very happy I finally got some success
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worked first time exactly right
It will not be ‘exactly right’ because there will always be some overrun (Z axis deceleration at the chosen feed-rate) and that line of code is intended to apply the correction but, if you are happy with the results then that’s all that is important.
Tweakie.
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Thanks for all the help, I'll probably be back onto ye when the sensors for my homing arrive and I get going on setting them up
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I removed the line "Code "G0 Z" &ZProbePos"
try to replace it by I "Code "G1 Z" &ZProbePos"
Looks like you machine is not able to follow G0 Speed.
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I changed G0 to G1 and it worked lovely, I've backed up everything so I don't have to try and figure that out again