PURPOSE: To provide a conveyor that is able to convey a preferential belt in taking precedence over other ordinary belts as well as to fully respond to an urgent completion requisition or the like, without troubling an operator.
CONSTITUTION: When a preferential flag stands erect in at least one of the conveyor indications of a conveyor indication table, the indication (a station number) the preferential flag stands up is read out of the conveyor indication table (S250). On the basis of this station number, the number of corresponding half-finished pieces and the upper limit value are read out of the station table (S260), and when the half-finished piece number is smaller than the upper limit value (when a destination station is acceptable), the number of a belt to be preferentially conveyed and the station number are transmitted (S280).
SHIBATA ATSUSHI
INOUE KAZUJI
