使用photoeyes的blocked procedure和cleared procedure,例如:5 Y2 L# Q+ a1 q2 P! F) Q9 C. G
begin Conveyor.Photoeyes1 blocked procedure / ^6 q) f5 e4 k, e if the load color = red then begin / u% \! [) h2 Z8 j- ~7 m travel to ........) m; _. S: v4 y* R! k3 I
end : K( R, L; T% y/ w9 V/ kend & T" F2 ?/ p& b) L: _( p( m