使用photoeyes的blocked procedure和cleared procedure,例如: " ~: h2 E2 b: t Ybegin Conveyor.Photoeyes1 blocked procedure2 O8 b/ C& {2 M: y
if the load color = red then begin8 I8 k. b4 \0 v
travel to ........) {) `. ~ M* \: P& F4 q
end, H k% Y6 M* w* c5 H
end 8 P* W/ b7 Y- p- `: }2 R