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M7 Mist coolant on
Mach3 Mach4 M-code · Mill
Turns on the mist coolant output.
Format
M7
Addresses
| Address | What it does |
|---|---|
M7 | No address words |
How it works
Modal, coolant group. Cancel with M9.
Example program
G0 G20 G90 G54 G17 G40 G49 G80 (SAFE START, INCH)
T1 M6 (TOOL CHANGE)
S8000 M3 (SPINDLE ON)
G43 H1 Z1.0 M7 (MIST ON)
…
T1 M6 (TOOL CHANGE)
S8000 M3 (SPINDLE ON)
G43 H1 Z1.0 M7 (MIST ON)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- The output pin is set in Ports and Pins on Mach3 or in the IO setup on Mach4. Nothing happens if it is not mapped.
- The Mach3 manual text swaps M7 and M8 in one place. The table says M7 is mist.
Related codes
M7 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Mist or second coolant on |
| Haas NGC | Shower coolant on |
| Doosan (Fanuc) | Bed shoer coolant on |
| Mazak (EIA) | Chuck clamp (holding workpiece) |
| LinuxCNC Tormach | Mist coolant on |
| Centroid CNC12 Acorn | Mist coolant on |
| Hurco WinMax (NC) | Mist coolant on |
| Fadal | Mist coolant on |
| Swiss (Citizen Star) | Main chuck open (Citizen) |
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Open M7 in the app All Mach3 Mach4 M-codes