Endless rotation
The endless rotation (M03/M04) functions command speed and direction of rotation. The spindle is accelerated at a constant speed (P-AXIS-00001, or P-AXIS-00002 during the deceleration phase) or an acceleration based on a curve. Endless rotation is terminated by spindle stop (M05), homing (G74) or a set-up block (M19).
DIN66025 programming
M3/M4 S..
Extended syntax