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M30 End of program
Siemens 840D 828D M-code · Mill and lathe
Ends the main program and resets the control to the program start. Same effect as M2 on Siemens.
Format
M30
How it works
Non modal.
Example program
G0 Z100 M5 M9 ; RETRACT, SPINDLE AND COOLANT OFF
G0 X0 Y0
M30 ; PROGRAM END
G0 X0 Y0
M30 ; PROGRAM END
Example is in inch. Check offsets and clearances first.
Watch out for
- Turn off the spindle and coolant before M30 so the next start begins safely.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M30 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | End of program and rewind |
| Haas NGC | Program end and reset |
| Doosan (Fanuc) | Program end & rewind |
| DMG Mori MAPPS (Fanuc) | Program end and rewind |
| Mazak (EIA) | Reset & tape rewind |
| Okuma OSP | End Program (Lathes & Mills) |
| Mitsubishi M70 M80 | End of program and rewind |
| Brother Speedio | Program end and rewind |
| Heidenhain TNC (ISO) | End of program, same as M2 |
| Fagor 8055 8065 | End of program and return to start |
| LinuxCNC Tormach | Program end and pallet shuttle |
| Mach3 Mach4 | Program end and rewind |
| Centroid CNC12 Acorn | End of program, custom |
| Hurco WinMax (NC) | Program end |
| Fadal | End of all subroutines, or end of program |
| Swiss (Citizen Star) | Program end and reset (Star) |
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