the comprehensive process operation error-proof system was independently developed by cyg contron. considering the actual features of production operations and the safety, efficiency and management requirements in petrochemical and other fields, the system uses physical and technical measures to implement the field confirmation system and prevent illegal operation, misoperation of normally open and normally closed valves, operations against the logical sequence of processes, and wrong start and stop of moving equipment, so as to effectively put an end to wrong operations on the site and improve the safety management performance of the factory.