使用photoeyes的blocked procedure和cleared procedure,例如:/ o+ |& o) f" |3 L Y
begin Conveyor.Photoeyes1 blocked procedure 4 z+ {% e( ~' q6 _; w) x, B if the load color = red then begin 2 W2 K' k9 A3 l: k) M; Y travel to ........ 7 [9 _0 b! t$ g; k) w1 ~6 B3 w end4 I1 y- L! N0 V6 Q
end [5 b7 ~8 J3 L