Influence of Architecture on Reliability and Safety of the SRCS with Safety PLC

Main goal of this paper is to outline influence of architecture on availability and safety of Safety Related Control System using Safety PLC. We will describe types of architecture, SRCS, differences between regular and safety PLC, Safety Related Control Function and at the end we will outline Safe-SADT (structured analysis and design technique) method for design intelligent distributed control systems. Methods and knowledge gained in this article will be used in evaluation of one of our models for case studies.