4.4.2 M code that controls program execution

M Code	Format	Function
M00	M00	System stop
M01	M01	Optional program termination
M02	M02	The program ends and the cursor stops at the end of the program
M30	M30	The program ends but the cursor points back to the first line of the program
M95	M95 P_P_L	Section program loop (from the first P_ to the second P_, execution L_ times)
M97	M97 P_L_	Intercom call L_ times
M98	M98(filename)L_	External subprogram call L_ times
M99	M99	The end of the subprogram (by the program to return to the original call)
M100	M100	Program stop, and can be changed to manual operation along the cutting path forward or backward feed
M101	M101	Optional program aborted, and can be changed to manual operation along the cutting path forward or backward feed