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M08 Coolant on
Haas NGC M-code · Mill, Lathe
On mills: Coolant on
Turns on the main flood coolant.
Format
M08
How it works
Modal, until M09.
Example program
T1 M06 (TOOL 1)
G90 G54 G00 X0. Y0. S2000 M03 (POSITION)
G43 H01 Z1. M08 (LENGTH COMP AND COOLANT ON)
G90 G54 G00 X0. Y0. S2000 M03 (POSITION)
G43 H01 Z1. M08 (LENGTH COMP AND COOLANT ON)
Example is in inch. Check offsets and clearances first.
Watch out for
- Setting 32 can override coolant on or off.
- Low coolant level stops the coolant with an alarm or message.
On lathes: Coolant on
Turns on the flood coolant. On machines with variable flow coolant, P sets the pump pressure level.
Format
M08 [P]
Addresses
| Address | What it does |
|---|---|
P | Variable flow coolant only. P0 low, P1 normal, P2 high |
How it works
Modal until M09.
Example program
T0101 (OD TOOL)
G00 G54 X2.1 Z.1 M08 (APPROACH, COOLANT ON)
G01 Z-1. F.01 (TURN)
G00 G54 X2.1 Z.1 M08 (APPROACH, COOLANT ON)
G01 Z-1. F.01 (TURN)
Example is in inch. Check offsets and clearances first.
Watch out for
- The coolant level is only checked at program start. A low tank will not stop a running program.
- Do not run straight mineral cutting oil. It damages rubber parts in the machine.
Related codes
M08 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Coolant on |
| Doosan (Fanuc) | Coolant on (upper side) |
| DMG Mori MAPPS (Fanuc) | Coolant discharge ON |
| Mazak (EIA) | Flood coolant ON |
| Okuma OSP | Coolant on (Lathes & Mills) |
| Mitsubishi M70 M80 | Coolant on |
| Brother Speedio | Coolant on |
| Siemens 840D 828D | Coolant on |
| Heidenhain TNC (ISO) | Coolant on |
| Fagor 8055 8065 | Coolant on (builder defined) |
| LinuxCNC Tormach | Flood coolant on |
| Mach3 Mach4 | Flood coolant on |
| Centroid CNC12 Acorn | Flood coolant on |
| Hurco WinMax (NC) | Flood coolant on |
| Fadal | Coolant on |
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