Industrial Automatic Control Systems and Controllers Annotation << Back Programmable Self-diagnosed Logic Controller to Execute Responsible Functions V.N. Rusanov, S.V. Kulikov The technical possibility of creating a three-channel self-diagnostic redundant logic controller with hybrid or «cold» redundancy on a modern domestic elementary base, having high reliability, high fault tolerance and radiation resistance, is shown. In self-diagnosing controllers, the failure of an operating channel is determined as a result of self-diagnostics, which is performed by the processor of the active channel periodically at fi xed time intervals together with the execution of the standard algorithm. After the next self-diagnosis, the value of the readiness coefficient of the self-diagnosis block, which is the main part of the channel, approaches one. Perhaps this is one of the main advantages of self-diagnosing computing systems. Keywords: redundant logic controller, nuclear power plants, redundancy, reliability, fault tolerance, radiation resistance, self-diagnostics. DOI: 10.25791/asu.4.2021.1272 Pp. 21-29.