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" @1 T( F# |/ c
% C4 d4 w# C' m- G% W+ iconveyor元素的input rule：
* H% P) `/ x$ G# ~, [( Uif nparts(coneyor001)<5
# W0 a2 S! q& L9 dpull from buf1 with labor1 using path
else
$ h& X7 W1 p$ `! q( {6 W; zwait
endif