Attempt to add part at undefined sensor 1 on conveyor coneyor001？

dd13616

Attempt to add part at undefined sensor 1 on conveyor coneyor001是怎么回事？
" E0 g3 r/ x% S$ h* V' b) }( u
2 P; X5 ]4 F- F/ Q: fconveyor元素的input rule：
  a3 V( q  p6 f0 qif nparts(coneyor001)<5
: \  f8 d& e) _9 q8 k5 m. s8 q) _pull from buf1 with labor1 using path
else
wait
endif