| 摘要 |
PROBLEM TO BE SOLVED: To realize a communication system capable of performing a connection test for a client without a controller. SOLUTION: In the communication system for the client-server communication, a server has a first database in which first tag information and first data are correlated. A controller accessed by the server has a second database in which second information and second data are correlated. Data exchange between clients is performed via the first database. In reading/writing data in the database of the controller, the controller is accessed via the first and second databases. COPYRIGHT: (C)2004,JPO
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