使用photoeyes的blocked procedure和cleared procedure,例如: ) Q- V7 o# ?/ q, K3 h/ Pbegin Conveyor.Photoeyes1 blocked procedure . V# E& |# Q+ _; X if the load color = red then begin * J4 W' K2 I- S% r travel to ........, ]; ]' E+ v1 i% P/ @
end 8 i( i J! m- l& uend, g" o2 J) k+ F X, }