Understanding G-code and M-code in CNC Programming

When it comes to CNC programming, G-code and M-code are essential elements that control the operation of the machine. Here's a brief explanation of the difference between the two:

G-code:

G-code, also known as the “geometric code,” is a language used to instruct CNC machines on how to move, position, and perform specific actions such as cutting, drilling, or milling. It consists of a series of alphanumeric codes that define the toolpath and operations.

M-code:

On the other hand, M-code, or “machine code,” is used to control auxiliary functions of the CNC machine, such as turning on and off the spindle, coolant, or other accessories. The M-codes tell the machine to perform specific tasks unrelated to the toolpath.

In summary, G-code primarily focuses on tool movement and operations, while M-code controls machine functions and auxiliary actions. It's crucial for CNC programmers to understand and utilize both types of codes effectively to ensure proper machine operation and precise manufacturing processes.