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ISO G codes and M codes for CNC turning

 


G-codes and M-codes are fundamental to programming Computer Numerical Control (CNC) turning machines. They form the language used to instruct the machine on what to do, how to do it, and when to do it. While G-codes (preparatory codes) primarily dictate the geometry and motion of the cutting tool, M-codes (miscellaneous codes) control auxiliary functions of the machine.   

G-Codes for CNC Turning (Preparatory Codes)

G-codes tell the CNC turning machine what kind of motion to perform. They define the path, speed, and type of movement. Here's a detailed look at some common and important G-codes used in CNC turning:  

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