使用photoeyes的blocked procedure和cleared procedure,例如: / ]7 ~5 R. U; Y5 r% Lbegin Conveyor.Photoeyes1 blocked procedure % h, K. A, G- H! K* n0 N if the load color = red then begin 8 k# h9 B l" u7 m travel to ........ 1 W' X$ c; u7 h. I6 O6 \8 o end ]9 e7 V3 \; Fend , j V; F2 g' G0 ^& e- j