Complete G-Code & M-Code List for All Major CNC Brands (Fanuc, Haas, Siemens, Heidenhain, Mazak)

This is the ultimate reference guide to G-codes and M-codes across the most popular CNC controls.

Whether you are programming Fanuc, Haas, Siemens, Heidenhain, or Mazak, this guide helps you quickly find the right code — including some lesser-known and hidden codes for advanced users.

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📌 1. Fanuc G-Codes (ISO Standard + Fanuc-Specific)

G-Code	Function
G00	Rapid positioning
G01	Linear interpolation
G02 / G03	Circular interpolation (CW / CCW)
G10	Programmable offsets
G12 / G13	Circular pocket milling
G41 / G42	Cutter compensation (L/R)
G65	Custom macro simple call
G68	Coordinate rotation
G76	Fine boring cycle
G83	Peck drilling cycle
G84	Tapping cycle
G96	CSS (Constant Surface Speed)
G99	Return to initial plane

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📌 2. Fanuc M-Codes (Common)

M-Code	Function
M00	Program stop
M03 / M04	Spindle CW/CCW
M05	Spindle stop
M06	Tool change
M08 / M09	Coolant on/off
M30	Program end & reset
M98 / M99	Subprogram call / return

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📌 3. Haas CNC G-Codes (Additional)

G-Code	Function
G187	Motion smoothing
G150	Pocket milling
G47	Engraving cycle
G110–G129	Additional work offsets

Haas also supports VPS Macros for easy probing and tool setup.

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📌 4. Siemens Sinumerik G-Codes (Cycle-Based)

Cycle	Function
CYCLE82	Drilling
CYCLE83	Peck drilling
CYCLE97	Thread cutting
CYCLE800	Swivel cycle (5-axis)
CYCLE977	Workpiece measurement

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📌 5. Heidenhain Codes

Heidenhain uses plain language programming but still supports G-codes in ISO mode.

Code	Function
CYCL DEF 200	Drilling
CYCL DEF 205	Peck drilling
CYCL DEF 207	Tapping
CYCL DEF 400	Datum setting (probing)

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📌 6. Mazak Smooth Control (EIA / Mazatrol)

Mazak supports both EIA G-code and Mazatrol conversational programming.

• G61.1 → High-precision contouring
• G68 → Coordinate rotation
• G65 P98xx → Probing macros
• M198 → Call subprogram from memory card

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📌 7. Hidden & Advanced Codes (For Experts)

Control	Hidden Code	Function
Fanuc	G05.1 Q1	AI contour control (high-speed machining)
Fanuc	G12.1	Polar coordinate interpolation
Haas	M59/M69	Custom I/O control
Siemens	TRAORI	Tool center point control (5-axis)
Heidenhain	M128	TCPM (Tool Center Point Management)

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📌 8. Best Practices for Multi-Brand Programming

• Always verify G-code compatibility before running on a different machine.
• Use post-processors in CAM software tuned for each control.
• Leverage custom macros to reduce repetitive code.

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✅ Conclusion

This guide covers the most-used G-codes and M-codes for Fanuc, Haas, Siemens, Heidenhain, and Mazak — plus some hidden gems for advanced programming.

Bookmark this page as your go-to reference whenever you program a new part or switch between machine brands.