06195591 is referenced by 176 patents and cites 42 patents.

A process controller implements an overall, user-developed control strategy in a process control network that includes distributed controller and field devices, such as Fieldbus and non-Fieldbus devices. A user defines the control strategy by building a plurality of function blocks and control modules and downloading or installing user-specified portions of the control strategy into the Fieldbus devices and the non-Fieldbus devices. Thereafter, the Fieldbus devices automatically perform the downloaded portions of the overall strategy independently of other portions of the control strategy. For example in a process control system that includes distributed field devices, controllers and workstations, portions of the control strategy downloaded or installed into the field devices operate independently of and in parallel with the control operations of the controllers and the workstations, while other control operations manage the Fieldbus devices and implement other portions of the control strategy.

Title
Process control system using a process control strategy distributed among multiple control elements
Application Number
9/209780
Publication Number
6195591 (B1)
Application Date
December 11, 1998
Publication Date
February 27, 2001
Inventor
Mike Lucas
Leicestershire
US
Arthur Webb
Leicestershire
US
Michael G Ott
Austin
TX, US
Dennis Stevenson
Round Rock
TX, US
Larry O Jundt
Round Rock
TX, US
Robert B Havekost
Austin
TX, US
Mark Nixon
Round Rock
TX, US
Agent
Skjerven Morrill MacPherson Franklin & Friel
US
Agent
Ken J Koestner
US
Assignee
Fisher Rosemount Systems
TX, US
IPC
G05B 9/02
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