Process control system using standard protocol control-of standard devices and non-standard devices

US6266726A · kind A · utility

Assignee

• FISHER-ROSEMOUNT SYSTEMS, INC. · US

Inventors

• Mark J. Nixon · Round Rock, US
• Robert B. Havekost · Austin, US
• Larry O. Jundt · Round Rock, US
• Dennis Stevenson · Round Rock, US
• Michael G. Ott · Austin, US
• Arthur Webb · Loughborough, GB
• Mike Lucas · Broughton Astley, GB

Key dates

• Filing date: Aug 18, 1998
• Grant date: Jul 24, 2001
• Expiry date: Aug 18, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/25428
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A process controller implements and executes a standard set of function blocks or control functions defined by a standard protocol so that standard-type control is achieved with respect to non-standard-type devices. The process controller enables standard devices to implement the standard set of function blocks and control functions. The process controller implements an overall strategy as if all connected devices are standard devices by usage of a Fieldbus function block as a fundamental building block for control structures. These function blocks are defined to create control structures for all types of devices.