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？
' `# R3 N; J9 I. u
conveyor元素的input rule：
) w8 f- F" ~; M9 x# Q; yif nparts(coneyor001)<5
pull from buf1 with labor1 using path
: @( h, l/ p' C( qelse
; J* n) c4 }; @# u) }wait
2 `8 K4 k5 u% v$ s2 Vendif