4.11.4.2 M01: Optional Program Stop
The function of M01 is the same as that of M00, but it is only effective when M01 in the status display area of the system shows a light blue background. When M01 does not have a light blue background, its function is equal to M00. If there is no light blue background in M01, the M01 command will not be executed, the program will not be aborted due to M01. If the CNC milling machine performs M00 or M01 after rough milling, the program will stop execution and the precision milling cutter can be replaced manually; if you want to continue the finishing milling program, press the start button or F9 key.