Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2011-02-15
2011-02-15
Ngo, Ricky (Department: 2464)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S466000
Reexamination Certificate
active
07889747
ABSTRACT:
A system for integrating a wireless network with wired field devices includes a field unit that communicates with the wired field devices using a first wired field device protocol. A gateway wirelessly communicates with the field unit and communicates over a network using one or more second wired field device protocols. The gateway also converts between the first wired field device protocol and the one or more second wired field device protocols. The gateway could further permit access to the wired field devices by a component of the process control system (such as a process controller, asset management tool, or configuration tool) that does not support the first wired field device protocol. At least one of the field unit and the gateway could appear as a multiplexer or linking device to the component of the process control system, such as a HART multiplexer or a Foundation Fieldbus or Profibus linking device.
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Chen Yu-Gene T.
Chernoguzov Alexander
Hodson William R.
McLaughlin Paul F.
Samudrala Prasad
Honeywell International , Inc.
Kao Wei-Po
Munck Carter, LLP
Ngo Ricky
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