使用photoeyes的blocked procedure和cleared procedure,例如:" A: Q* V2 ]# |* O
begin Conveyor.Photoeyes1 blocked procedure8 \2 Z G+ Y1 e
if the load color = red then begin2 o3 e' B/ B L% x3 b* t$ w
travel to ........8 L+ V# @' s' a" N. |: z
end / Z, f5 z; v7 p- C( fend' e9 Y1 F, K& G) P& V; [ V0 Q