1) G CODES ARE USED TO INITIATE CONTROL COMMANDS IN CNC MACHINE THESE ARE ALSO CALLED AS PREPARATORY FUNCTION CODES
2) G96 IS CONSTANT SURFACE SPEED OR CUTTING SPEED.
3) CNC CONTROL USE THIS CODE TO CALCULATE RPM ACCORDING TO DIAMETER OF WORKPIECE
4) G50 IS USED TO LIMIT SPINDLE SPEED OF CNC MACINE
5) MEANING OF G50 IS LIMITING MAX SPINDLE SPEED