使用photoeyes的blocked procedure和cleared procedure,例如:9 K9 H$ S9 M; v
begin Conveyor.Photoeyes1 blocked procedure4 j& k, }% ^- l$ {
if the load color = red then begin8 r$ N, L/ T$ |$ Y
travel to ........( D) i Z2 t/ H; F
end % {, N G( M( Z5 d; f- f3 n7 T+ Mend& j) A$ ~! d, R0 i