Field device with separated memory areas

US8706995B2 · kind B2 · utility

Assignee

• VEGA Grieshaber KG · DE

Inventors

• Martin Gaiser · Alpirsbach, DE
• Juergen Haas · Knittlingen, DE
• Juergen Lienhard · Fischerbach, DE
• Juergen Motzer · Gengenbach, DE

Key dates

• Filing date: Oct 21, 2009
• Grant date: Apr 22, 2014
• Expiry date: Apr 11, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N35/00871
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A field device for measuring a filling level, a pressure or a density of a medium in a container includes data memory with two memory areas that are separated from one another. First data for safety-critical program modules is stored in the first memory area. Second data for safety-uncritical program modules is stored in the second memory area. The two memory areas are separated from one another. All access to these memory areas is controlled by a memory management unit.