使用photoeyes的blocked procedure和cleared procedure,例如: 9 s. l1 l2 I! P2 S1 I9 p* x& J1 Z9 q4 }begin Conveyor.Photoeyes1 blocked procedure& W; C+ V" ^0 [9 ]" ^# U
if the load color = red then begin # M, h) v8 F( p travel to ........; f' e- G2 |% R# D9 t$ ^9 G
end ( y& i: \7 m) n3 @4 G9 i8 }end+ {7 o3 A8 ^4 p: a1 @0 G