使用photoeyes的blocked procedure和cleared procedure,例如: . ~6 j/ F. n w) W: H; P1 hbegin Conveyor.Photoeyes1 blocked procedure; u7 ~$ D6 ?2 o7 c8 r/ T* o \% [
if the load color = red then begin9 G- B0 S1 }% d1 ^/ w p
travel to ........ ! z) S4 M7 v( w5 t1 W end9 [" q1 Y U1 M
end4 {4 @4 u' Y* v/ I+ v7 c: I