CNC G-Code and M-Code Reference for Milling

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G-Code and M-Code Reference for Milling

These are the common g-codes and m-codes for milling that G-Wizard Editor supports for Mills. Code categories are the groupings for the g-code Wizard (type Ctrl+G for the Wizard). Function tells what the g-code does, Notes gives a little more information such as the parameters, and Tutorial is a link (if any) to a tutorial from our Online G-Code Tutorial that uses G-Wizard Editor to teach how to program the g-code.

	Code	Category	Function	Notes	Tutorials
	G00	Motion	Move in a straight line at rapids speed.	XYZ of endpoint	G00 and MDI. Linear Motion: G00 and G01
	G01	Motion	Move in a straight line at last speed commanded by a (F)eedrate	XYZ of endpoint	G01 and MDI. Linear Motion: G00 and G01
	G02	Motion	Clockwise circular arc at (F)eedrate	XYZ of endpoint IJK relative to center R for radius	G02 / G03 Tutorial and Examples
	G03	Motion	Counter-clockwise circular arc at (F)eedrate	XYZ of endpoint IJK relative to center R for radius	G02 / G03 Tutorial and Examples
	G04	Motion	Dwell: Stop for a specified time.	P for milliseconds X for seconds
	G09	Motion	Exact stop check
	G10	Compensation	Programmable parameter input
	G15	Coordinate	Turn Polar Coordinates OFF, return to Cartesian Coordinates		G15/G16 Polar Coordinates
	G16	Coordinate	Turn Polar Coordinates ON		G15/G16 Polar Coordinates
	G17	Coordinate	Select X-Y plane
	G18	Coordinate	Select X-Z plane
	G19	Coordinate	Select Y-Z plane
	G20	Coordinate	Program coordinates are inches
	G21	Coordinate	Program coordinates are mm
	G27	Motion	Reference point return check
	G28	Motion	Return to home position
	G29	Motion	Return from the reference position
	G30	Motion	Return to the 2nd, 3rd, and 4th reference point
	G32	Canned	Constant lead threading (like G01 synchronized with spindle)
	G40	Compensation	Tool cutter compensation off (radius comp.)
	G41	Compensation	Tool cutter compensation left (radius comp.)
	G42	Compensation	Tool cutter compensation right (radius comp.)
	G43	Compensation	Apply tool length compensation (plus)
	G44	Compensation	Apply tool length compensation (minus)
	G49	Compensation	Tool length compensation cancel
	G50	Compensation	Reset all scale factors to 1.0
	G51	Compensation	Turn on scale factors
	G52	Coordinate	Local workshift for all coordinate systems: add XYZ offsets
	G53	Coordinate	Machine coordinate system (cancel work offsets)
	G54	Coordinate	Work coordinate system (1st Workpiece)
	G55	Coordinate	Work coordinate system (2nd Workpiece)
	G56	Coordinate	Work coordinate system (3rd Workpiece)
	G57	Coordinate	Work coordinate system (4th Workpiece)
	G58	Coordinate	Work coordinate system (5th Workpiece)
	G59	Coordinate	Work coordinate system (6th Workpiece)
	G61	Other	Exact stop check mode
	G62	Other	Automatic corner override
	G63	Other	Tapping mode
	G64	Other	Best speed path
	G65	Other	Custom macro simple call		Subprograms and Macros
	G68	Coordinate	Coordinate System Rotation		G68 and G69 Tutorial and Examples
	G69	Coordinate	Cancel Coordinate System Rotation		G68 and G69 Tutorial and Examples
	G73	Canned	High speed drilling cycle (small retract)
	G74	Canned	Left hand tapping cycle
	G76	Canned	Fine boring cyle
	G80	Canned	Cancel canned cycle
	G81	Canned	Simple drilling cycle
	G82	Canned	Drilling cycle with dwell (counterboring)
	G83	Canned	Peck drilling cycle (full retract)
	G84	Canned	Tapping cycle
	G85	Canned	Boring canned cycle, no dwell, feed out
	G86	Canned	Boring canned cycle, spindle stop, rapid out
	G87	Canned	Back boring canned cycle
	G88	Canned	Boring canned cycle, spindle stop, manual out
	G89	Canned	Boring canned cycle, dwell, feed out
	G90	Coordinate	Absolute programming of XYZ (type B and C systems)
	G90.1	Coordinate	Absolute programming IJK (type B and C systems)
	G91	Coordinate	Incremental programming of XYZ (type B and C systems)
	G91.1	Coordinate	Incremental programming IJK (type B and C systems)
	G92	Coordinate	Offset coordinate system and save parameters
	G92 (alternate)	Motion	Clamp of maximum spindle speed	S
	G92.1	Coordinate	Cancel offset and zero parameters
	G92.2	Coordinate	Cancel offset and retain parameters
	G92.3	Coordinate	Offset coordinate system with saved parameters
	G94	Motion	Units per minute feed mode. Units in inches or mm.
	G95	Motion	Units per revolution feed mode. Units in inches or mm.
	G96	Motion	Constant surface speed		G96: Constant Surface Speed
	G97	Motion	Cancel constant surface speed		G96: Constant Surface Speed
	G98	Canned	Return to initial Z plane after canned cycle
	G99	Canned	Return to initial R plane after canned cycle


M-Codes
	Code	Category	Function	Notes	Tutorials
	M00	M-Code	Program Stop (non-optional)
	M01	M-Code	Optional Stop: Operator Selected to Enable
	M02	M-Code	End of Program
	M03	M-Code	Spindle ON (CW Rotation)		M03 and MDI.
	M04	M-Code	Spindle ON (CCW Rotation)
	M05	M-Code	Spindle Stop		M05 and MDI.
	M06	M-Code	Tool Change
	M07	M-Code	Mist Coolant ON		M07 and MDI.
	M08	M-Code	Flood Coolant ON		M08 and MDI.
	M09	M-Code	Coolant OFF		M09 and MDI.

	M30	M-Code	End of Program, Rewind and Reset Modes

	M97	M-Code	Haas-Style Subprogram Call		Subprograms and Macros
	M98	M-Code	Subprogram Call		Subprograms and Macros
	M99	M-Code	Return from Subprogram		Subprograms and Macros