Multi-protocol field device interface with automatic bus detection
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United States of America Patent
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Feb 7, 2012
Grant Date -
Dec 14, 2006
app pub date -
Jun 6, 2006
filing date -
Jun 8, 2005
priority date (Note) -
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Abstract
A multi-protocol interface for coupling a field device to a general purpose computer is disclosed. The interface includes measurement circuitry to perform a plurality of measurements on a connected process communication loop to determine a process communication loop type. Then, if the interface includes a protocol interface module that matches the detected loop type, the protocol interface module can be engaged. A method for coupling a field device to a general purpose computer is also provided. In one aspect, power from the general purpose computer is used to power the process communication loop, if the interface determines that the loop is not powered.
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