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INSTRUMENTATION CONTROL SYSTEM

  • US 20090287322A1
  • Filed: 05/06/2009
  • Published: 11/19/2009
  • Est. Priority Date: 05/15/2008
  • Status: Abandoned Application
First Claim
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1. An instrumentation control system, comprising:

  • a first field device; and

    a second field device coupled to the first field device via a fieldbus to allow bidirectional communication, wherein the first field device comprises;

    a transmitting buffer to store data to be transmitted to the second field device;

    a transmitter to transmit the data to the second field device; and

    an inquiry processing section to cause the transmitter to retransmit the data stored in the transmitting buffer to the second field device in response to a data retransmission request from the second field device, and the second field device comprises;

    a receiving buffer to store the data transmitted from the first field device;

    a checking section to determine whether the data stored in the receiving buffer is normal or not, and to make a data retransmission request to the first field device if the data stored in the receiving buffer is not normal; and

    a processing unit to perform predetermined processing based on the data which is determined to be normal by the checking section.

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