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M99 Subprogram end and return
Mitsubishi M70 M80 M-code · Mill and lathe
Ends a subprogram and returns to the calling program. With P, returns to that sequence number.
Format
M99 [P]
Addresses
| Address | What it does |
|---|---|
P | Sequence number to return to |
How it works
Non-modal.
Example program
O1234 (SUB PROGRAM)
G91 G01 Z-.05 F10. (STEP DOWN)
G90 (ABSOLUTE)
M99 (RETURN)
G91 G01 Z-.05 F10. (STEP DOWN)
G90 (ABSOLUTE)
M99 (RETURN)
Example is in inch. Check offsets and clearances first.
Watch out for
- M99 in a main program loops it forever. Use only on bar feeders or loops on purpose.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M99 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Subprogram end and return |
| Haas NGC | Subprogram return or loop |
| Doosan (Fanuc) | End of sub program |
| DMG Mori MAPPS (Fanuc) | Sub-program end Repeat program |
| Mazak (EIA) | EIA → EIA Return to main EIA program |
| Okuma OSP | Subprogram return (Lathes & Mills) |
| Brother Speedio | Subprogram end |
| Heidenhain TNC (ISO) | Cycle call in a positioning block |
| LinuxCNC Tormach | Fanuc style subprogram return |
| Mach3 Mach4 | Subprogram return |
| Centroid CNC12 Acorn | Return from subprogram or macro |
| Hurco WinMax (NC) | Subprogram return |
| Fadal | End of subprogram, or line jump |
| Swiss (Citizen Star) | Subprogram return or program loop |
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