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M77 Wait for spindle sync (Citizen)
Swiss (Citizen Star) M-code · Lathe
Makes the path wait until the back spindle has matched the main spindle after G814 or G114.1.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
M77
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)
Example is in inch. Check offsets and clearances first.
Watch out for
- Close the back chuck only after M77, or the part can twist in the collet.
- This is a sync wait, not a wait between systems. For that Citizen uses the ! L code.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M77 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | Control display active |
| Doosan (Fanuc) | Chamfering off |
| DMG Mori MAPPS (Fanuc) | External output |
| Okuma OSP | Parts catcher advance |
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