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M15 Back spindle chuck close (Citizen)
Swiss (Citizen Star) M-code · Lathe
Closes the back spindle collet to pick off or support the part.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
M15
Addresses
| Address | What it does |
|---|---|
None | No addresses |
How it works
One shot.
Example program
($2 BACK PATH)
G814 (SPINDLE SYNC)
M77 (WAIT FOR SYNC)
M15 (BACK CHUCK CLOSE)
…
G814 (SPINDLE SYNC)
M77 (WAIT FOR SYNC)
M15 (BACK CHUCK CLOSE)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Sync the spindles first with G814 or G114.1 and M77.
- A short G04 after M15 lets the collet grip before the cut-off.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M15 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Live tool stop |
| Haas NGC | Main spindle brake off |
| Doosan (Fanuc) | Left spindle air blow off |
| Mazak (EIA) | Milling tool stop |
| Okuma OSP | C-axis positioning in positive direction |
Every M-code for Swiss (Citizen Star) in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open M15 in the app All Swiss M-codes