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AssigneeFisher-Rosemount Systems, Inc.
InventorsMoises A. DelaCruz, Daniel E. Vande Vusse, Kun Yang, Alan R. Dewey, Gregory J. Opheim
Estimating the term…
A method for preventing unsafe transmission on an incompatible network with a multi-protocol intrinsically safe handheld field maintenance tool as provided. The method preferably includes checking voltage levels on two sets of network connections when a network connection is detected or indicated on one set. If incompatible voltage levels are detected, the field technician is warned. If voltage levels are appropriate on a selected set of network terminals, the method continues by listening for network traffic of the selected network type. In this manner, a multi-protocol intrinsically safe handheld field maintenance tool is operable with multiple process control communication protocols while minimizing the risk of incompatible data/signal transmission upon process communication loops.
A method of selectably communicating on a process communication loop with a multi-protocol handheld field maintenance tool having first and second sets of loop connection terminals, the method comprising:
A method of selectably communicating on a process communication loop with a multi-protocol handheld field maintenance tool having first and second sets of loop connection terminals, the method comprising:
A method of selectably communicating on a process communication loop with a multi-protocol handheld field maintenance tool having first and second sets of loop connection terminals, the method comprising:
A method of selectably communicating on a process communication loop with a multi-protocol handheld field maintenance tool having first and second sets of loop connection terminals, the method comprising:
Dependencies are inferred from the claim text.