To perform an efficient and quick changeover operation by effectively reducing the waiting time at the moment of changeover for each facility of a production line.

A captioned device comprises a facility block composed of a cutter part 102, an accumulation part 48, a snap ball cutting part 104, a cutting part 64, a packaging part 76 and a palletizer part 90 which are divided along the line direction, exclusive PC 106a to 106f which control each facility block and a master PC 110 which performs communication between itself and each of PC 106a to 106f and transfers changeover data for each facility block produced in lot change or the like to each PC 106a to 106f as a lump. And, starting from the facility block in which the operations before changeover have been finished, the changeover operations can be automatically and successively performed along the changeover data.