Method for intercontroller communications in a safety instrumented system or a process control system
作者： Kent Allan Burr , Godfrey Roland Sherriff , Gary Keith Law
DOI:
关键词:
摘要: The claimed system provides an I/O card that is used to interface two process controllers over a communication line separate from primary connecting the workstation. can access cards in similar manner connect field devices. In this manner, physical hardware and software architecture does not need be modified for inter-controller communications. Inter-controller communications programmed as general communication.
google.de 参考文章(104)
Charles D. Wolfson, Workcell controller employing entity-server model for physical objects and logical abstractions ,(1989)
You-Cheng Luo, Chung-Hong Lai, Chang-Guang Lin, Method for command transmission between systems ,(2006)
Edgar H. Bristol, Computer language structure for process control applications, and translator therefor ,(1985)
Deborah R. Mcmanus, Kevin W. Bodie, Cindy Mangiamelli, Ilean D. Barns-Slavin, Steven P. Sonleiter, System and method for managing user permissions for accessing functionality of multiple software applications ,(2000)
John Hodorowski, Method of programming industrial controllers with highly distributed processing ,(1994)
Damian L. Osisek, Allocation of address spaces within virtual machine compute system ,(1993)
Jimmy R. Rickard, Gerald L. Roberts, Theodore J. Blevins, Robert K. Hollenbeck, Washing machine with oversuds detection and correction capability ,(1981)
Ken J. Beoughter, Robert B. Havekost, William E. Bennett, John R. Shepard, Dwight D. Jennings, Deferred acknowledgment communications and alarm management ,(2006)
K. Y. Lin, John Weiss, Control device and safety circuit for heating pads with PTC heater ,(1992)
Esko Nieminen, Method and apparatus for producing path metrics in trellis ,(2003)