M48 Overrides on

Mach3 Mach4 M-code · Mill

Enables the feed rate and spindle speed override controls.

Format

M48

Addresses

Address	What it does
`M48`	No address words

How it works

Modal, override group.

Example program

G0 G20 G90 G54 G17 G40 G49 G80 (SAFE START, INCH)
M49 (OVERRIDES LOCKED)
M98 P2000 (SENSITIVE SECTION)
M48 (OVERRIDES BACK ON)

Example is in inch. Check offsets and clearances first.

Watch out for

Turn overrides back on after a section that needed M49.

Related codes

M49

M48 on other controls

The same number can mean something different on another control.

Control	Meaning
Haas NGC	Check program is right for loaded pallet
DMG Mori MAPPS (Fanuc)	Override cancel OFF
Mazak (EIA)	Parts catcher advance
Okuma OSP	Spindle speed override ignore cancel
LinuxCNC Tormach	Enable feed and speed overrides
Fadal	Feed and RPM override active

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 M48 in the app All Mach3 Mach4 M-codes

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