M49 Overrides off

Mach3 Mach4 M-code · Mill

Disables the feed and speed overrides so the programmed values run.

Format

M49

Addresses

Address	What it does
`M49`	No address words

How it works

Modal, override group. Cancel with M48.

Example program

G0 G20 G90 G54 G17 G40 G49 G80 (SAFE START, INCH)
M49 (LOCK OVERRIDES FOR PROBING)
G31 Z-1.0 F3.0 (PROBE)
M48 (OVERRIDES ON)

Example is in inch. Check offsets and clearances first.

Watch out for

Useful in probing and tool setting macros where an override would spoil the result.

Related codes

M48 · G31

M49 on other controls

The same number can mean something different on another control.

Control	Meaning
Haas NGC	Set status of pallet
Doosan (Fanuc)	Milling spindle orientation
DMG Mori MAPPS (Fanuc)	Override cancel ON
Mazak (EIA)	Parts catcher retract
Okuma OSP	Spindle speed override ignore
LinuxCNC Tormach	Disable feed and speed overrides
Fadal	Feed and RPM override inactive

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 M49 in the app All Mach3 Mach4 M-codes

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