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？
! Z; r/ }$ {$ U* ^5 I  N/ T( Y
$ M, F5 y" I- X& z6 g( _conveyor元素的input rule：
1 H, @/ n# o; |- @4 i& ~1 pif nparts(coneyor001)<5
pull from buf1 with labor1 using path
& S( v3 u" T' Q2 O( x/ Welse
wait
endif