To provide a conveyance data production device and a conveyance controller, allowing rapid carry-out by efficiently using a plurality of traveling bodies regardless of an arrangement form of a component plate material in a carry-out source, for a plate material conveying device having the plurality of traveling bodies.

The plate material conveying device 2 has the plurality of traveling bodies 13, 14 each having a plurality of holders 23A wherein arrangement relation is common. This conveyance data production device has a holder allocation means 36 allocating the holders 23A of the common arrangement to shape data F1 of each component plate material W. The conveyance controller 43 has: a traveling body selection means 47 selecting the traveling body 13, 14 in a vacant state; and a holder selection means 48 making the holder 23A of the common arrangement allocated to the component plate material W perform holding operation in the selected traveling body 13, 14.