Fanuc M-Code G-Code list

Introduction to G Codes and M Codes

Fanuc M-Code G-Code, G codes (preparatory commands) and M codes (auxiliary commands) are essential instructions used to control machine tools.

• G codes govern motion, positioning, and machining operations (e.g., linear interpolation, circular movements, tool compensation).
• M codes manage auxiliary functions (e.g., spindle control, coolant activation, tool changes).

These Fanuc M-Code G-Code vary slightly depending on the machine type (lathe, mill, etc.) and Fanuc control version. Always consult your machine’s manual for specifics.

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Common Fanuc G Codes

Machining Centers

Code	Description
G00	Rapid positioning (fast traverse)
G01	Linear interpolation (straight-line motion)
G02	Circular interpolation (clockwise)
G03	Circular interpolation (counterclockwise)
G04	Dwell (pause)
G05	non standard g-code
G17	XY plane selection
G18	XZ plane selection
G19	YZ plane selection
G20	Programming in inches
G21	Programming in millimeters
G22
G28	Return to reference position (home)
G29	Return from reference point
G30	Return to secondary reference position
G40	Cancel tool radius compensation
G41	Tool radius compensation left
G42	Tool radius compensation right
G43	Tool length compensation (positive)
G44	Tool length compensation (negative)
G49	Cancel tool length compensation
G54–G59	Work coordinate system (WCS) selection
G61	Exact stop check (precision mode)
G90	Absolute programming
G91	Incremental programming
G92	Set position by programming
G94	Per-minute feedrate mode
G95	Per-revolution feedrate mode
G100–G199	Macro programs (varies by configuration)

LATHES

Some G codes are not avialable depending on kind of CNC

Code	Description
G00	Rapid positioning (fast traverse)
G01	Linear interpolation (straight-line motion)
G02	Circular interpolation (clockwise)
G03	Circular interpolation (counterclockwise)
G04	Dwell (pause)
G05	High-speed cycle machining
G09	Exact stop
G10	Data setting
G11	Data setting mode cancel
G15	Polar coordinates command cancel
G16	Polar coordinates command
G17	XY plane selection
G18	XZ plane selection
G19	YZ plane selection
G20	Programming in inches
G21	Programming in millimeters
G22	Stored stroke check function on
G23	Stored stroke check function off
G27	Reference point return check
G28	Return to reference position (home)
G29	Return from reference position
G30	Return to secondary reference position
G31	Skip fonction
G33	Treading
G39	Corner offset circular interpolation
G40	Cancel tool radius compensation
G41	Tool radius compensation left
G42	Tool radius compensation right
G43	Tool length compensation (positive)
G44	Tool length compensation (negative)
G45	Tool offset extension
G46	Tool offset reduction
G47	Double extension of tool offset
G48	Tool offset reduction by half
G49	Cancel tool length compensation
G50	Scaling cancel
G51	Scaling
G52	Local coordinate system setting
G53	selection of machine coordinate system
G54–G59	Work coordinate system (WCS) selection
G60	Unidirectional positioning
G61	Exact stop check (precision mode)
G62	automatic corner override
G63	Tapping mode
G64	Cutting mode
G65	Macrocommand, macro call
G66	Custom macro modal call
G67	Custom macro modal call cancel
G68	Coordinate rotation
G69	Coordinate rotation cancel
G70	Finish cycle
G71	Rough cutting cycle of outer diameter
G72	Rough cutting cycle end face
G73	Peck drilling cycle
G74	Counter tapping cycle
G75	Outer inner diameter cutting off cycle
G76	multiple threading cycle
G80	Canned cycle cancel
G81	Drilling cycle, spot boring
G82	Drilling cycle, counter boring
G83	Peck drilling cycle
G84	Tapping cycle
G85	Boring cycle
G86	Boring cycle
G87	Back boring cycle
G88	Boring cycle
G89	Boring cycle
G90	Absolute programming
G91	Incremental programming
G92	Set coordinate system by programming
G94	Per-minute feedrate mode
G95	Per-revolution feedrate mode
G96	Constant surface speed control
G97	Constant surface speed control cancel
G98	Return to initial point
G99	Return to R point
G100–G199	Macro programs (varies by configuration)

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Common Fanuc M Codes

Code	Description
M00	Program stop
M01	Optional stop
M02	Program end
M03	Spindle on (clockwise)
M04	Spindle on (counterclockwise)
M05	Spindle stop
M06	Tool change
M07	Mist coolant on (air cooling)
M08	Flood coolant on
M09	Cooling (air cooling, water cooling, central outlet) OFF
M10	Chuck CLAMP
M11	Chuck UNCLAMP
M12	QUILL OUT
M13	QUILL IN / 4th axls clamp
M14	4th axls unclamp
M15	5th axls clamp
M16	5th axls unclamp
M17	AUTO DOOR CLOSE
M18	AUTO DOOR OPEN
M19	Spindle orientation
M20	Open tool magazine door
M21	Close tool magazine door
M23	CHAMFERING ON / Main shaft center water opening
M24	CHAMFERING OFF / Main shaft center water outlet is closed
M25	LNS BAR FEEDER EXTEND
M26	BAR FEEDER ON
M27	BAR FEEDER OFF
M28	PART CATCHER EXTEND / Enable external data input
M29	PART CATCHER RETRACT / Disable external data input
M30	Program end and return to start
M31	CHUCK BYPASS ON
M32	CHUCK BYPASS OFF
M37	CHIP CONVEYOR CW
M38	CHIP CONVEYOR STOP
M43	SETTER DOWN
M44	SETTER UP
M47	SOFT LIMIT 2 VALID
M48	SOFT LIMIT 3 VALID
M49	SOFT LIMIT 2/3 UNVALID
M41–M49	Tool changer preparation
M51	ERROR DETECT OFF
M52	ERROR DETECT ON
M53	STEADY CLAMP
M54	STEADY UNCLAMP
M55	TAIL STOCK CLAMP
M56	TAIL STOCK UNCLAMP
M61–M69	Tool selection (machine-specific)
M79	Tool reset (suitable for arm type tool store)
M97	PARTS COUNTED
M98	Subprogram call
M99	Subprogram return
M100–M199	Customizable codes (user-defined)

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Notes

1. Variations: Codes may differ by machine manufacturer or Fanuc control version.
2. Documentation: Always refer to your machine’s manual for exact code definitions.
3. Compatibility: Codes depend on the machine type (e.g., lathe vs. mill).

For exhaustive lists of Fanuc M-Code G-Code, consult Fanuc technical manuals or your machine’s programming guide.