使用photoeyes的blocked procedure和cleared procedure,例如:) a. l& d$ u& a
begin Conveyor.Photoeyes1 blocked procedure 2 W$ Y7 r0 A( G5 a if the load color = red then begin + c0 ~! M3 z2 O travel to ........1 b7 \4 ?% i; t" X" ]/ z
end+ ]4 U$ p" ]: E' n4 n
end2 N6 z5 @1 R1 j+ C