Mount an ID Tag (Data Carrier) to the magazine rack, use it to store the PCB data (lot number, model number, board size, number of boards, etc.), then switch processes during mounting based on the ID Tag data. When mounting is finished, write completion data and mounted PCB data to the magazine rack ID Tag. Also write the result (OK/NG) of the inspection process to the ID Tag, and feed NG products back to the repair line.