Indirect referencing in process control routines
US6385496B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99948
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A generic process control routine for a process control system is written to include alias names and dynamic reference parameters. Before execution of a process control function on a particular unit of the process control system, an instance of the generic routine is created, in which the alias names are replaced by parameters defined in an alias resolution table for the particular unit. The controller then executes the instantiated version of the generic routine to control operation of the unit. The generic routine can have multiple algorithms associated therewith, wherein each of the algorithms is designed to control different units having somewhat different hardware, even though these different units perform essentially the same function within the process control system. The generic routine may also be used with multiple classes of hardware that perform different functions within the process control system. The dynamic reference parameters of the generic process control routine enable a field to be specified at or during run-time and include a reference attribute that stores a path or tag to the referenced field, a connection attribute that identifies whether an actual connecti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.