PACKET COMMUNICATION SYSTEM AND INFRASTRUCTURE SYSTEM BUILDING AUTOMATION SYSTEM AND FACTORY AUTOMATION SYSTEM USING PACKET COMMUNICATION SYSTEM

摘要

(Project) To provide a packet communication system employing a multi-drop method that enables high-speed communication even in systems such as infrastructure, factory automation, and building automation. (Solution) In a packet communication system in which the central apparatus 200 and a plurality of terminal apparatuses 300 are multi-drop connected to each other, the central apparatus 200 is a device that transmits a packet including source information indicating itself. , each terminal device 300 is a device capable of acting as a repeater, and the setting unit 340 in which whether or not it acts as a repeater is set, and the setting unit 340 is set to act as a repeater and a generator 320 that generates a packet including relay agent information representing itself, and a processor 330 that discards packets that do not include relay agent information.