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？
$ ?. ]& ]. N/ U  M: Z2 w# R
7 b# |& `6 W! {$ U' v& c* {- T& bconveyor元素的input rule：
- Q+ }4 o% W& [- Q  g% R5 _if nparts(coneyor001)<5
3 _  d2 Z  N  Ipull from buf1 with labor1 using path
else
wait
endif