使用photoeyes的blocked procedure和cleared procedure,例如:" r7 f; w* [! w* J
begin Conveyor.Photoeyes1 blocked procedure * W# m. m) `9 x8 j if the load color = red then begin* V- B( u' d( ~% Z7 v
travel to ........ ! a+ v+ J/ X# T! s, C) d end 0 a/ S C7 w9 R3 i3 m( Y3 Y, yend6 g6 z: q4 t# t, [$ m