if !global.mmu_servo_engaged
  M280 P{global.mmu_servo_num} S{global.mmu_servo_engage}
  G4 P200
  ;M98 P"mmu/lib/generated/buzz.g"
  M400
  ; servo off disabled due to truncated final pulse issue
  ; https://forum.duet3d.com/topic/32172/turning-off-servos-and-m42-interrupting-the-last-pulse
  ;M42 P{global.mmu_servo_num} S0

set global.mmu_servo_engaged = true