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？
* `# i! x3 n9 R+ L' J, u
5 w, e% P  q9 I: D. L/ Uconveyor元素的input rule：
: B7 i7 X0 [% Q; f& u  Qif nparts(coneyor001)<5
pull from buf1 with labor1 using path
& X; }, |4 ~0 G* r( {3 qelse
# x; H8 w# V( Zwait
: M: J9 R% P: }( {; A3 v" iendif