使用photoeyes的blocked procedure和cleared procedure,例如:: b9 `8 {- b$ D4 x# e$ r
begin Conveyor.Photoeyes1 blocked procedure. t& T \$ a, {+ F$ v+ U
if the load color = red then begin& G! {0 y# ^! d
travel to ........ 5 W# }* l- G+ f1 D& s* W3 Q2 W end * T! Y4 \0 G0 { G0 t5 S5 [, Xend; T; j# |; H+ `0 }" h3 {1 R/ o; y