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？

conveyor元素的input rule：
6 U6 g+ r: k8 E) Dif nparts(coneyor001)<5
pull from buf1 with labor1 using path
else
% U2 D: k9 c0 s4 _$ k; ~wait
4 W4 T% o' D! h. O& r' ^endif