使用photoeyes的blocked procedure和cleared procedure,例如: 8 ^1 q# `6 N+ c& v. R9 ibegin Conveyor.Photoeyes1 blocked procedure$ c: D3 [6 B9 t. x8 l
if the load color = red then begin2 t2 h. y4 b. K7 C) Z) E! y, ?& D
travel to ........0 B' U( \9 Z6 V8 x4 ?: D3 U, N
end 0 o: `9 ~8 ]3 B: F+ ^/ J! T. Wend k/ y. Y8 M+ O8 _1 Q. {