Which term describes the standards that dictate the language used by CNC machines and part programs?

Which term describes the standards that dictate the language used by CNC machines and part programs?

• A. CNC standards
• B. G code
• C. Computer-aided manufacturing
• D. Program zero determination

Answer: (A)

G-code is the language that tells CNC machines how to move and operate. The standards define how that language is written and interpreted, including the meanings of G-codes for geometry and motion (like rapid or linear moves) and M-codes for machine functions (like spindle on/off). These standards—developed and maintained as ISO/ASME conventions (and their historical RS-274-D lineage)—specify the syntax, format, and behavior of the programs that control the machine. That’s why this term is the correct description of the language standards used by CNC machines and their part programs. Broad terms like CNC standards are too general, while computer-aided manufacturing refers to software tools and workflows, and program zero determination is a setup step for locating the work coordinate system.

G-code is the language that tells CNC machines how to move and operate. The standards define how that language is written and interpreted, including the meanings of G-codes for geometry and motion (like rapid or linear moves) and M-codes for machine functions (like spindle on/off). These standards—developed and maintained as ISO/ASME conventions (and their historical RS-274-D lineage)—specify the syntax, format, and behavior of the programs that control the machine. That’s why this term is the correct description of the language standards used by CNC machines and their part programs. Broad terms like CNC standards are too general, while computer-aided manufacturing refers to software tools and workflows, and program zero determination is a setup step for locating the work coordinate system.