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？
6 \- L& v5 u/ W  K: W0 ?
. [3 o! Q' Z9 ^  R% @conveyor元素的input rule：
if nparts(coneyor001)<5
% {" n" g3 E: _2 `8 \. X: cpull from buf1 with labor1 using path
0 |& r% R! p& D4 Jelse
$ k' |+ @5 i% c* Y% d6 mwait
endif