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Field bus system with industrial measurement device having automonous control operation

  • US 9,869,987 B2
  • Filed: 03/23/2015
  • Issued: 01/16/2018
  • Est. Priority Date: 03/25/2014
  • Status: Active Grant
First Claim
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1. A process control system comprising:

  • an I/O module that is connected to a first field device which is installed in a plant in which an industrial process is controlled, the I/O module autonomously transmitting a process value and device management data received from the first field device, the process value being measured by the first field device;

    a signal relay that comprises a memory which temporarily stores the process value and the device management data autonomously transmitted from the I/O module;

    a controller configured to read the process value and the device management data stored in the memory of the signal relay at a predetermined period, the controller calculating a manipulation volume based on the process value, the controller transmitting the manipulation volume to the signal relay to control a second field device via the I/O module or another I/O module, the second field device being different from the first field device and connected to the I/O module or the another I/O module; and

    a device manager configured to obtain the device management data from the controller so as to determine a normality of the first field device.

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