Inventors:
Steven Dardinski - Westford MA, US
Keith Eldridge - North Easton MA, US
Robert Hall - South Easton MA, US
Mark Johnson - North Attleboro MA, US
Brian McKay - Coppell TX, US
Paul Meskonis - Norwood MA, US
Scott Volk - North Easton MA, US
Assignee:
Invensys Systems, Inc. - Foxboro MA
International Classification:
G06F 9/445
Abstract:
A process control system is configured via manipulation of objects that model system components, e. g. , sensors, blocks, control processors, historians, workstations, etc. Individual objects include parameters that characterize the underlying components and/or the behavior of the objects themselves. These parameters are derived from the “parents,” from which the objects are created. Derived characteristics need not be defined explicitly but, rather, are defined implicitly or by reference. These derived characteristics may be overridden for an individual object and, thereby, its progeny. Although objects have class-like characteristics (i. e. , insofar as they are definitional in nature), they can be created at configuration time, without the need for recompilation.