PLANT CONTROL MONITORING SYSTEM

摘要

A plant control monitoring system that can reduce communication traffic between a client and server to improve processing speed, and that includes: a server-side storage section provided in a server to store operation right processing information for a machine group on a client operation monitoring screen; client-side storage sections provided in clients to store duplicates of the operation right processing information of the server-side storage section; and operation right processing sections provided in the clients to correspond to each of the operation monitoring screens and that perform operation right processing based on the operation right processing information of the client-side storage sections. Operation right processing information for each client is stored in a global variable storage section of the client-side storage section, and operation right processing information for each operation screen is stored in a local variable storage section of the client-side storage section.

主权项

1. A plant control monitoring system, comprising:
a controller which controls a plurality of machine groups constituting a plant; a plurality of HMI clients which are provided in such a manner as to correspond to each of the plurality of machine groups and in which one or more operation monitoring screens are displayed; an HMI server which is provided in such a manner as to be communicable with the HMI clients and collects data from the controller; a server-side storage section which is provided in the HMI server and stores operation right processing information on an operation right for the machine groups on the operation monitoring screens displayed in the HMI clients; client-side storage sections which are provided in the HMI clients and store operation right processing information duplicated from operation right processing information stored in the server-side storage section; and operation right processing sections which are provided in the HMI clients in such a manner as to correspond to each of the operation monitoring screens and perform operation right processing on the operation monitoring screens on the basis of operation right information stored in the client-side storage sections, wherein the client-side storage sections comprise: a global variable storage section which is provided for each of the HMI clients and is accessible from the operation right processing section belonging to the same HMI client; and a local variable storage section which is provided for each of the operation monitoring screens and is accessible from the operation right processing section belonging to the same operation monitoring screen, wherein the global variable storage section stores operation right processing information for each client on an operation right set for each of the HMI clients among operation right information, and wherein the local variable storage section stores operation right processing information for each screen on an operation right set for each of the operation monitoring screens among operation right information.