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Control system with predictive field device response time over a wireless network

  • US 20070165656A1
  • Filed: 01/11/2007
  • Published: 07/19/2007
  • Est. Priority Date: 01/11/2006
  • Status: Active Grant
First Claim
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1. A control system comprising:

  • a plurality of field devices;

    a host computer for sending control messages to and receiving response messages from the field devices;

    a plurality of wireless nodes that cycle between a sleep state and an active state according to a wireless network power cycle, at least one of the field devices being associated with each node; and

    a gateway between the host computer and the wireless nodes;

    the gateway providing the host computer, in response to a message addressed to one of the field devices, a predicted time value of when the field device will respond to the message.

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