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Function block applications in control systems based on IEC 61804.

Christian Diedrich1, Francesco Russo, Ludwig Winkel

  • 1Department Control System, Ifak, Magdeburg, Germany. chd@ifak.fhg.de

ISA Transactions
|March 6, 2004
PubMed
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The IEC 61804 standard enables a unified control system interface for diverse fieldbus technologies. This ensures consistent functionality regardless of the specific fieldbus or device manufacturer used in process industries.

Area of Science:

  • Industrial Automation and Control Systems
  • Process Engineering
  • Standardization in Manufacturing

Background:

  • The process industries have seen a proliferation of diverse digital fieldbus technologies and devices over the past decade.
  • A unified interface is crucial for control system engineers to manage various communication technologies and device manufacturers.
  • Existing systems often lack a common functionality, complicating integration and operation.

Purpose of the Study:

  • To discuss the implementation of a consistent function block capability across different fieldbus technologies within control systems.
  • To demonstrate how the draft IEC 61804 standard facilitates a flexible and common interface for fieldbus utilization.
  • To analyze the impact and benefits of IEC 61804 for the process industry and control system manufacturers.

Related Experiment Videos

Main Methods:

  • Examining the structure proposed by the draft IEC 61804 standard for control systems.
  • Illustrating the application of the standard with examples using Foundation Fieldbus and PROFIBUS.
  • Detailing the standardized method for manufacturers to describe field device function block capabilities.

Main Results:

  • The IEC 61804 standard provides a framework for achieving a consistent function block capability across various fieldbus technologies.
  • Modern control systems can successfully integrate different fieldbuses (e.g., Foundation Fieldbus, PROFIBUS) using this standard for a unified interface.
  • A standardized approach exists for manufacturers to define and communicate the capabilities of their field devices.

Conclusions:

  • The IEC 61804 standard offers a significant benefit by enabling control system independence from specific fieldbus technologies and manufacturers.
  • Adoption of this standard will lead to greater flexibility, simplified engineering, and improved interoperability in process control.
  • The standard impacts both the process industry by streamlining operations and control system manufacturers by defining clear interface requirements.