If M03 command is present in the CNC program, spindle rotation is clockwise (forward).

Function M03 is usually used with an spindle speed address S to define the spindle speed. If an spindle speed S is not specified the last spindle speed is used.

Example of using CNC command M03 in an CNC program.

%
O1011 (M03 example)    (Program number (O1011) and Program name (M03 example)
G00 Z0.25                             (Safe Z)
G00 X123 Y457                       (go to X,Y coordinates of the hole center)
S450 M03                           (Spindle clockwise (CW), n=450)
G84 X123 Y457 Z-0.5 R1 F85       (Z-final depth of tap before retract)
G00 Z0.5                              (Safe Z)
M03                                     (Stop CNC program execution)
G00 X0 Y0                            (go to machine Zero)
M30                                    (End)
%

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