Which code describes the operations a machine should perform in a part program?

Which code describes the operations a machine should perform in a part program?

• A. G code
• B. N code
• C. Coordinate code
• D. Address

Answer: (A)

G-code is the language that tells a CNC machine exactly what to do. It defines the operations to perform—how the tool should move, at what feed rate, which tool to use, and when to turn the spindle or coolant on or off. Commands like those that control motion (rapid moves, linear interpolation, arcs) and auxiliary actions come in G-codes and M-codes, forming the sequence of operations in the part program. Other terms like line numbers or generic “coordinate” labels aren’t the instructions that drive the machining itself, so they don’t describe the operations in the same way.

G-code is the language that tells a CNC machine exactly what to do. It defines the operations to perform—how the tool should move, at what feed rate, which tool to use, and when to turn the spindle or coolant on or off. Commands like those that control motion (rapid moves, linear interpolation, arcs) and auxiliary actions come in G-codes and M-codes, forming the sequence of operations in the part program. Other terms like line numbers or generic “coordinate” labels aren’t the instructions that drive the machining itself, so they don’t describe the operations in the same way.