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Process control system devices with dual hardwired and wireless communication ports

  • US 7,623,479 B2
  • Filed: 10/08/2004
  • Issued: 11/24/2009
  • Est. Priority Date: 10/24/1994
  • Status: Expired due to Fees
First Claim
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1. A field device for use in a process control system within a process control environment, comprising:

  • a microprocessor-based communication unit of the field device for generating or receiving communication signals;

    a first communication port of the field device connected to a hard-wired communication link for providing communications to or from the communication unit via the hard-wired communication link; and

    a second communication port of the field device connected to a radio frequency wireless transceiver to provide wireless communications to or from the communication unit via the wireless transceiver.

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