使用photoeyes的blocked procedure和cleared procedure,例如:7 e7 J2 \" H# w( O0 K3 v
begin Conveyor.Photoeyes1 blocked procedure1 ?2 m% v) v/ |0 Q# u' O3 ^6 f
if the load color = red then begin0 }9 B' |, t2 E/ O, \% s# F5 _- J6 m
travel to ........7 g- p3 I' A# R7 Q3 a
end * Q3 B, y! m: d0 i- s5 q0 ~end. Y Q( t, l% P