Which code controls the motion mode and machine operations in a CNC program?

Which code controls the motion mode and machine operations in a CNC program?

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

Answer: (A)

G codes define how the tool moves and the type of motion the machine follows. They specify rapid positioning (G00), linear moves (G01), circular interpolation (G02/G03), and the working plane (G17/18/19), as well as different positioning modes (G90/G91) and canned cycles. These codes directly control the motion path and how the machine operates along that path. While auxiliary machine actions like spindle on/off or coolant are handled by M codes, the motion mode and the core path execution come from G codes, making them the primary language for motion control in a CNC program.

G codes define how the tool moves and the type of motion the machine follows. They specify rapid positioning (G00), linear moves (G01), circular interpolation (G02/G03), and the working plane (G17/18/19), as well as different positioning modes (G90/G91) and canned cycles. These codes directly control the motion path and how the machine operates along that path. While auxiliary machine actions like spindle on/off or coolant are handled by M codes, the motion mode and the core path execution come from G codes, making them the primary language for motion control in a CNC program.