```
o<m13> sub

; Move tool carousel CCW until ATC zero
; ; Parameter #5170 is used to track the current tool pocket (persistently)
(print, o<M13> P#<p>)

M65 P10 (set atc widget unhomed)
M64 P11 (show atc widget referencing msg)
M64 P3 ; Move Motor FWD
M66 P3 L1 Q10
 O120 if [#5399 LT 0]
      (abort, failed to home carousel)
      M65 P3; stop motor
 O120 endif
   #5170 = 1
M65 P3 ; Stop motor
M65 P11 (hide atc widget referencing msg)
M64 P10 (set atc widget homed)
#5171 = 1
m61 q#5210
 O130 if [#5171 EQ 1]
      M14
 O130 endif

o<m13> endsub [1]

M2