CNC Information | Learn CNC | CNC Programming G-Code

M03, M04, M05 Spindle CW, Spindle CCW, Spindle Stop
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M08, M09 Coolant/lubricant On, Coolant/lubricant Off
M02 Program Stop
M30 Program end, rewind
M98 Subprogram call
M99 Return to call program
M00, M01 Program stop, optional stop
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G96, G97 Constant surface speed, Constant Spindle speed
G50 Maximum spindle speed
G95, G94 Feed mm per revolution, feed mm/min
G00, G01 rapid movement, Linear Interpolation (cutting in a straight line)
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F Feed
S Spindle Speed
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direction Coordinates X Y Z A B C U V W

explain the ifference between the rewind function M30 and program end M02 are they the same?

Here is my take, others chime in. In my experience, G-Code and M-Codes are so specific to the CAM/CNC Machine Combo, that a lot of the "rules" go out the window. These are the ISO Codes, but there are tons of differences.

Here is my take:
M02 - could be used to stop the program from executing. Possible quality check, tool wear check, tool change, etc.
M30 - Ends the program, final line to stop the execution. Tells the machine to stop. Most times this also "rewinds" the program back to the start. In the meantime, you load another part and start the cycle again. That way the program is ready to run again.

Hope that helps,
Others chime in,
Ivan