WIDE AREA OPERATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve the safety of the whole system by preventing all data flowing in a system from leaking to the outside part and all devices constituting the system from being unauthorizedly controlled even when one defense system is destroyed at the time of constituting the system by using the internet or the like. SOLUTION: At the time of fetching data such as maintenance management data and operation data from each control terminal equipment 3, or at the time of changing the control contents of each pump or the like connected with each control terminal equipment 3 by a monitor controlling device 4 connected with an intranet 2 or portable terminal equipment 6 connected with the internet 5, a long-in ID and a password are confirmed for each hierarchy, and authentication is applied to each hierarchy. Then, the remote monitored and remote control of a plant is operated by the monitoring controller 4 and the portable terminal equipment 6.