使用photoeyes的blocked procedure和cleared procedure,例如: - S% d$ _4 f. V1 d3 I% E0 q% wbegin Conveyor.Photoeyes1 blocked procedure. V. ~! l# j4 B( f2 w1 G$ h/ r
if the load color = red then begin % w% u% S' H0 J travel to ........' B" ?% I! b9 }0 O" R! x
end * B$ C. c3 H- O% v& }( mend ; d" z7 g% B3 L$ J