使用photoeyes的blocked procedure和cleared procedure,例如:: |9 G* t8 j- B7 K3 Z4 O
begin Conveyor.Photoeyes1 blocked procedure; F5 ?9 N$ f% B5 N1 ` ^
if the load color = red then begin 6 l9 r& Q% G+ u+ `- u travel to ........2 U7 z7 [9 b% `8 S6 ?8 V Z
end7 S' n- [! x% `9 z+ P( o4 O
end2 D9 S C+ L/ F, A