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M9 Coolant off
Mach3 Mach4 M-code · Mill
Turns off all coolant outputs.
Format
M9
Addresses
| Address | What it does |
|---|---|
M9 | No address words |
How it works
Modal, coolant group.
Example program
G0 G20 G90 G54 G17 G40 G49 G80 (SAFE START, INCH)
T1 M6 (TOOL CHANGE)
G43 H1 Z1.0 M8 (FLOOD ON)
G0 Z1.0 (RETRACT)
…
T1 M6 (TOOL CHANGE)
G43 H1 Z1.0 M8 (FLOOD ON)
G0 Z1.0 (RETRACT)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Put M9 before every tool change and at the end of the program.
Related codes
M9 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Coolant off |
| Haas NGC | Coolant off |
| Doosan (Fanuc) | Coolant off (upper side) |
| DMG Mori MAPPS (Fanuc) | Oil shot OFF Coolant discharge OFF |
| Mazak (EIA) | Coolant OFF |
| Okuma OSP | Coolant off (Lathes & Mills) |
| Mitsubishi M70 M80 | Coolant off |
| Brother Speedio | Coolant off |
| Siemens 840D 828D | Coolant off |
| Heidenhain TNC (ISO) | Coolant off |
| Fagor 8055 8065 | Coolant off (builder defined) |
| LinuxCNC Tormach | Coolant off |
| Centroid CNC12 Acorn | Coolant off |
| Hurco WinMax (NC) | All coolant off |
| Fadal | Coolant off |
Every M-code for Mach3 Mach4 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 M9 in the app All Mach3 Mach4 M-codes