| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a plant control system having functions of acquiring event information necessary for a maintenance computer remotely connected to the system and delivering a processing result thereof without interference with functions of a monitoring device of the system. <P>SOLUTION: This plant control system including a control device for controlling a plant, a server for collecting event information temporarily stored in the control device and storing it in an event database, and a monitoring device for displaying or file-outputting the event information acquired by access to the event database comprises the maintenance computer remotely connected to the system, and a data service unit receiving a service request from the maintenance computer and returning a data processing result of the event information collected by access to the event database to the maintenance computer. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
