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US 7,320,067 B2Granted
Method for reprogramming a field device
AssigneeEndress + Hauser GmbH + Co. KG
InventorsMartin Pfändler, Arthur Schrock
Life of this patent
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Abstract
According to a method for reprogramming a field device, the current supply of the field device is increased in the programming mode. This enables electrically deletable and reprogrammable memories to be used in field devices.
Claims2
A field device for detecting or controlling a process variable, having:
- a microprocessor;
- a memory in which a control program is stored that determines the function of the field device;
- a power supply unit;
- and means for regulating the output of said power supply unit, wherein:
- said memory is electrically erasable and reprogrammable;
- a field bus interface (FSB) serves as said power supply, said field bus interface being connected to a digital data bus (DBL);
- and
- said field bus interface (FBS) has a control input (E1) and associated resistance which serves as means for regulating said power supply unit and thus regulates said power supply of the field device.
5 more elements
Dependencies are inferred from the claim text.