What type of programming language is primarily used in CNC machines?

G-code is the primary programming language used in CNC (Computer Numerical Control) machines. It is specifically designed to control the movement and operation of CNC machinery such as lathes, mills, and routers. G-code provides a way to tell the CNC machine how to perform tasks such as moving to positions, controlling feed rates, and activating the tool for cutting. Each command in G-code typically starts with a letter 'G' followed by a number, which specifies a particular action or operation that the machine should perform.

Programming in G-code allows operators to create precise and repeatable parts through detailed instructions that dictate the path and speed at which the machine operates. This precision is essential in manufacturing processes, where exact dimensions and tolerances are critical for part functionality and quality.

Other programming languages, such as Python, C++, and JavaScript, are generally used for software development or scripting in broader contexts, not specifically optimized for direct machine control like G-code is.