💻 G & M-Code Reference

Why a G-Code Reference Matters

G-codes and M-codes are the language of CNC machines. Even experienced programmers need a quick reference — especially when switching between Fanuc, Haas, and other controls where codes can behave differently or have different modal groups.

• G00/G01 for rapid and linear moves, G02/G03 for arcs, G41/G42 for cutter comp — the codes every machinist must know cold
• M-codes control spindle, coolant, and program flow — M03/M04 for spindle direction, M08/M09 for coolant, M30 for program end
• Modal vs. non-modal codes matter: G01 stays active until you change it, but G28 executes once — mixing these up causes crashes

Related Tools