CONTROL SYSTEM AND CONTROL METHOD

PROBLEM TO BE SOLVED: To correspond to an operation state of a device for regenerating fibers and to deal with it without physically going to the installation site of the device. SOLUTION: A control system 1 includes a sheet production device 100 and a control device 200. The sheet production device 100 includes: a web forming unit for forming a web from a raw material; a web conveyance unit for conveying the web; a state detection unit for detecting the state of at least one of the web forming unit and the web conveyance unit; and a determination unit for determining presence/absence of a formation error factor of the web. The control device 200 includes: a first communication unit 201 for receiving the determination result transmitted from the sheet production device 100; and a first control unit 202 for transmitting a stop command with respect to the sheet production device 100. SELECTED DRAWING: Figure 1