CNC Machinist Calculator UltraHome › M-codes › Swiss (Citizen Star) › M81
M81 Rotary tool 1 reverse (Citizen)
Swiss (Citizen Star) M-code · Lathe
Starts the first rotary tool spindle in reverse.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
M81 S3=
Addresses
| Address | What it does |
|---|---|
S3= | Rotary tool speed |
How it works
Modal. Stop with M82.
Example program
M18 (C AXIS ON)
M81 S3=2000 (ROTARY TOOL REVERSE)
G00 X.6 Z.25 T1400 (CROSS TOOL)
M81 S3=2000 (ROTARY TOOL REVERSE)
G00 X.6 Z.25 T1400 (CROSS TOOL)
Example is in inch. Check offsets and clearances first.
Watch out for
- Check the tool hand. Cross tools on the far side may need reverse.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M81 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | Automatic door close |
| Doosan (Fanuc) | Q-setter swing arm up |
| DMG Mori MAPPS (Fanuc) | Shower coolant OFF |
| Mazak (EIA) | Workpiece measurement start |
| Okuma OSP | Over cut retract |
| Fadal | Automatic doors close |
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 M81 in the app All Swiss M-codes