摘要 |
In a picking and assorting system, a control unit makes, based on a volume of buckets, a picking schedule for one batch to be picked from article racks into the buckets. If there are articles that have been loaded into the buckets based on the picking schedule for one batch but remain in trays after sorting, then a warehouse control unit causes carriers to move work-in-progress trays from work shelves to a third tray storage space. |