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？
. ]7 o: Z) z1 ]7 \! F
1 R' Y, l  o1 J2 B% Y$ g9 M+ g' Mconveyor元素的input rule：
if nparts(coneyor001)<5
pull from buf1 with labor1 using path
: U3 B5 C$ M3 l3 c7 V" Aelse
% T& \$ H' ?$ v4 q7 _wait
+ a' ~* [4 ^* W- |, M8 Y  ^endif