Method for monitoring a field device
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United States of America Patent
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Feb 15, 2011
Issued Date -
N/A
app pub date -
Jun 9, 2004
filing date -
Jun 11, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for monitoring a field device connected via a data bus with a control unit. To prevent unauthorized tampering with the field device, the control unit requests, at intervals of time, an individual identifier of the field device. The requested individual identifier is compared with an identifier stored in the control unit. An alarm is produced or a warning, in the case of a change in the requested individual identifier.
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