Patent attributes
A transport system includes a track, transport vehicles, an area controller, buffers, and a host controller. The area controller, when a number of the transport vehicles present within a control area is a predetermined number and when receiving a first transport command to convey an article from a transfer port to a transport destination outside the control area from the host controller, stores the first transport command and transmits a report that the first transport command is not able to be assigned to the transport vehicle to the host controller. The host controller, when receiving the report, when the buffer is present, transmits a command to delete the stored first transport command to the area controller, generates a second transport command to convey the article from the transfer port to the buffer, and transmits the second transport command to the area controller.
