OVERLOAD RESPONSE METHOD IN MODULE OF DISTRIBUTION TYPE REAL TIME CONTROL SYSTEM

PROBLEM TO BE SOLVED: To improve an overload respose method for modules of a distribution type real time control system. SOLUTION: Plural overload levels respectively having upper and lower thresholds are allocated to the short term type and long term type overloads of respective modules 10, 20, 30 in a distribution type real time control system 1, one of plural overload control processings is allocated to each of these overload levels and an overload level corresponding to each module state is determined at real time based on a measured control parameter indicating the degree of overload. In autonomous control, each module of the system 1 determines its own overload level and executes overload control processing corresponding to the determined level. In system integration type control, a central processor determines suitable overload control processing corresponding to the overload state of each module in the system 1 based on overload information received from the module and requests the module to execute the determined overload control processing.