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M4 - Spindle CCW / Laser On

1.1.2 control Set the spindle CCW speed or laser power SPINDLE_LASER_ENABLE

Description

Wait for moves to complete, then set the spindle speed (counter-clockwise) or laser power.

Notes

S is interpeted as the configured value range: PWM (default), Percentage, or RPM. (See CUTTER_POWER_UNIT)

M3 and M4 aren’t needed with LASER_POWER_INLINE and LASER_MOVE_POWER enabled. Power is set directly in G1G5

Usage

M4 [I<mode>] [O<power>] [S<power>]

Parameters

[I<mode>]

Inline mode ON / OFF.

    [O<power>]

    Spindle speed or laser power in PWM 0-255 value range

      [S<power>]

      Spindle speed or laser power in the configured value range (see CUTTER_POWER_UNIT). (PWM 0-255 by default)

        Examples

        Set spindle rotation counter-clockwise at 50% with CUTTER_POWER_UNIT set to PERCENT

        M4 S50

        Set spindle rotation counter-clockwise at 50% with CUTTER_POWER_UNIT set to PWM

        M4 S128

        Set spindle rotation counter-clockwise at 80% in PWM

        M4 O204

        Turn on the laser at full / SPEED_POWER_STARTUP power

        M4

        Fire laser at 80% on next G1,G2 and G3 move

        M4 S204 I