Decoding the Language of CNC: What Are G and M Codes That Power Modern Manufacturing
G and M codes form the universal programming language for CNC manufacturing, with G codes primarily controlling geometric movement and M codes managing machine functions. Developed in the 1950s, these commands have evolved while maintaining their fundamental structure and purpose. Though alternative programming interfaces have emerged, G and M codes continue to operate as the underlying instructions that direct machine tools. Their implementation varies across control systems and manufacturing processes, but mastering these codes provides valuable skills applicable throughout the industry. As manufacturing embraces digital transformation, G and M codes adapt to new technologies while remaining the essential link between design and production.