METHOD AND SYSTEM FOR ESTABLISHING REDUNDANCY CONTEXT IN PROCESS CONTROL SYSTEM WITH FIRST AND SECOND APPLICATION STATIONS, METHOD AND SYSTEM FOR MAINTAINING/MANAGING REDUNDANCY CONTEXT IN THE SAME PROCESS CONTROL SYSTEM, MACHINE ACCESSIBLE MEDIUM WITH DATA, REDUNDANT APPLICATION STATION SYSTEM, AND METHOD OF CHANGING CONFIGURATION OF APPLICATION STATION

摘要

PPROBLEM TO BE SOLVED: To provide a method for quickly and seamlessly taking over control when an application station brakes down. PSOLUTION: An application station for use in a process control system includes a redundancy manager and a redundancy link subsystem coupled to the redundancy manager. The redundancy manager is adapted to communicate with a second application station via a redundancy communication link. The redundancy manager establishes a redundancy context with the second application station and uses the redundancy context to track the operations of the second application station. Additionally, the redundancy manager receives information from the second application station via the redundancy link and the redundancy link subsystem and, in response to the information, executes a switchover of the operations of the second application station to the application station. PCOPYRIGHT: (C)2010,JPO&INPIT