摘要:
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.
摘要:
An electronic module for level measurements, pressure measurements or density measurements is disclosed. In the module, a safety-relevant function is transferred into an area that is categorized as safety-uncritical. In order to prevent malfunctions, a diagnostic function is performed in the safety-critical area of the electronic module in order to check the transferred function. This diagnostic function is also checked with respect to its effectiveness during the safety-oriented operation. Suitable measures can be initiated in case an error is detected.
摘要:
A sensor includes an electronic module that comprises several electronic subassemblies and a processor that can be electrically coupled to the electronic subassemblies. The subassemblies respectively feature a programmable storage device with subassembly-specific data of the respective subassembly. The content of the respective programmable storage devices can be read out and evaluated by the processor.