Starting script needed for home made cnc machine

Hi folks,

I've just setup endstops of X and Y. For my Z I use a touch plate. I want to Home Z using the touch-plate (3.9mm thick) first, then I want it to home X Y before starting the job.
One thing needs to be noted is that my Y homes 142mm past the start of my work area. So I can set an offset on my Y with something like M206 Y-142??? I think.

This is what I have now but I'm very unsure if this will work as I want it to.

;Project <project>
;Created by Estlcam version <version> build <build>
;Machining time about <time> hours
G28 X Y
G1 Y150 F600
M0 INSTALL TOUCH-PLATE
G28 Z (Home Z to touchplate)
G1 Z10 F120
M17 (Enable Steppers)
M0 REMOVE TOUCH-PLATE
G1 Z-3.9 F120
G92 X0 Y0 Z0
G1 Z4 F120
G28 X Y
G90

Thanks in advance,

John

Quote:

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Originally Posted by solly747

Hi folks,

I've just setup endstops of X and Y. For my Z I use a touch plate. I want to Home Z using the touch-plate (3.9mm thick) first, then I want it to home X Y before starting the job.
One thing needs to be noted is that my Y homes 142mm past the start of my work area. So I can set an offset on my Y with something like M206 Y-142??? I think.

This is what I have now but I'm very unsure if this will work as I want it to.

;Project <project>
;Created by Estlcam version <version> build <build>
;Machining time about <time> hours
G28 X Y
G1 Y150 F600
M0 INSTALL TOUCH-PLATE
G28 Z (Home Z to touchplate)
G1 Z10 F120
M17 (Enable Steppers)
M0 REMOVE TOUCH-PLATE
G1 Z-3.9 F120
G92 X0 Y0 Z0
G1 Z4 F120
G28 X Y
G90

Thanks in advance,

John

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Z is never homed to a touch -plate machine Home is Z axes up to it's max travel or where ever you want it to stop by activating the Home/ limit switch

Z axes offset and Touch-Plate is used for setting Tool length offset G43 Etc Tool offsets G43

Work Offsets us G54 Etc

G28 try G53 or just G0

G92 X0 Y0 Z0 never do a Z axes move on the same line as a X and Y axes move Z axes move is always done before a X Y move

This is how Z axes Tool offset works

Thanks for all this.

Are you able to change what I have to what you recommend as a whole script? G53 is not supported by Marlin (sorry I should've said that's what I was using).

Still trying to get my head around it all.

Thanks again for the reply

Quote:

---

Originally Posted by solly747

Thanks for all this.

Are you able to change what I have to what you recommend as a whole script? G53 is not supported by Marlin (sorry I should've said that's what I was using).

Still trying to get my head around it all.

Thanks again for the reply

---

No I can't help you with your control, you are best to try where the Marlin software is used there may be some users on here, but in general that is what is happening when people get into a system with very little support

Quote:

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Originally Posted by mactec54

No I can't help you with your control, you are best to try where the Marlin software is used there may be some users on here, but in general that is what is happening when people get into a system with very little support

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This thread most likely has a better system than what you are working with https://www.cnczone.com/forums/uncat...cam-forum.html

Quote:

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Originally Posted by mactec54

This thread most likely has a better system than what you are working with https://www.cnczone.com/forums/uncat...cam-forum.html

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Thanks mate

Marlin is great for 3d printers, but not what you want on a CNC. Your way better off going with GRBL or Linux CNC or one of the other open source packages for CNC.