| 摘要 |
PURPOSE: A SCADA(Supervisory Control And Data Acquisition) system supporting dynamic IP network based on a PLC(Programmable Logic Controller) is provide to improve a network configuration flexibility, and cope with a shortage of IP resources. CONSTITUTION: A dynamic IP address is allocated to a PLC from a DHCP(Dynamic Host Configuration Protocol) server(20). A dedicated DDNS(Dynamic Domain Name Service) server(30) receives identification information composed of the dynamic IP address and the PLC system name from the PLC. The dedicated DDNS server transmits information including the identification information to a client system(40).
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