使用photoeyes的blocked procedure和cleared procedure,例如:2 E, j, J4 j+ @% {5 T: t
begin Conveyor.Photoeyes1 blocked procedure ( ]2 \! T# M; E' q if the load color = red then begin2 ?9 X% {( Y+ f$ z( w- B4 B
travel to ........ ; E* k. i* u7 n2 Q% C# V8 N( Y: C end # r8 [/ d& a1 F$ v# Pend4 S6 f V: A. O9 F' l- J( w0 H