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M24 Back spindle reverse (Citizen)
Swiss (Citizen Star) M-code · Lathe
Starts the back spindle in reverse with S2=. Used to match the main spindle before pick-off.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
S2= | Back spindle speed |
How it works
Modal, back spindle group.
Example program
M24 S2=3000 (MATCH MAIN SPINDLE)
G814 (SPINDLE SYNC)
M77 (WAIT FOR SYNC)
Example is in inch. Check offsets and clearances first.
Watch out for
- Set S2= equal to the main S1= before G814.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M24 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Thread chamfer off |
| Haas NGC | Chamfer out of thread off |
| Doosan (Fanuc) | Chip conveyor run |
| DMG Mori MAPPS (Fanuc) | External output |
| Mazak (EIA) | Robot service call |
| Okuma OSP | Chuck Barrier off |
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Open M24 in the app All Swiss M-codes