| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To attain monitoring control without adding a new communication protocol and being conscious of the other subsystems, while linking data mutually between the respective subsystems. <P>SOLUTION: In a large-scale monitoring control system wherein subsystems 2a, 2b, 2c, ..., are branched and connected on a network 1, the subsystem 2a, for example, has controllers 3a, ..., as a lower rank side device, monitoring treatment-display devices 4a, 5a as a higher rank side device, and an inter-system coordination device 6a. The inter-system coordination device 6a places data related to monitoring control transmitted from the controller 3a as a lower rank side device at a designated interval as a higher rank side device, and transmits the data to the other inter-system coordination devices 6b, 6c, ..., through the network 1 at a second designated interval after receiving it by the communication protocol in the self-system. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
