Enterprise:Engineering:Automation

Contents 1 Navigation 2 Related categories 3 About this page 4 Agile manufacturing and distributed automation 5 IEC 1131-3 : first international standard for open distributed automation 6 IEC 61131-3 : Sequential Function Charts (SFC) 7 IEC 61804 : Function blocks for process control 8 IEC 61499 : Function blocks for process control 9 Fieldbus 10 IEC 61158 : Open Fieldbus specification

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About this page

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Agile manufacturing and distributed automation

• Agility requires dynamic reconfiguration at minimal cost and with minimal human intervention
• Need for configuration control

IEC 1131-3 : first international standard for open distributed automation

• Encapsulation/Reuse Mechanisms
  • Function Blocks, Functions, Data Types, Programs

• Application-adapted Languages
  • Ladder Diagram (LD) for logic control (“power flow”)
  • Function Block Diagram (FBD) for regulatory control (“data flow”)
  • Sequential Function Chart (SFC) for state-machine control
  • Structured Text (ST) for information processing
  • Instruction List (IL) for assembly-level programming

IEC 61131-3 : Sequential Function Charts (SFC)

• External Interface Specification
• Control Algorithm Specification
• Centralized system configuration

IEC 61804 : Function blocks for process control

• Distributed configuration over Fieldbus
• Scheduled communication and function block execution
• Electronic Device Description Language (EDDL)
  • Text-based language describing the digital communication characteristics of field device parameters
  • Device description (DD) files based on library of blocks and block parameters

IEC 61499 : Function blocks for process control

• Successor to both IEC 61131-3 and IEC 61804
• Distributed automation model based on functional blocks communicating over a Fieldbus
• Service Oriented Architecture based on devices, resources, applications and function blocks
• Basic features
  • Distributed applications
  • Event and data interfaces
  • Encapsulation, reuse and portability
  • Event-driven state machines
  • Service-oriented architecture
  • Publish-subscribe and client-server models
  • Remote device and system management model
  • Application frameworks and portability libraries
  • Supported by engineering toolsets
  • Entity hierarchy: devices, resources, applications and function blocks

Fieldbus

A generic term designation an industrial-control digital communication network replacing the analogue current-loop legacy communication standard

IEC 61158 : Open Fieldbus specification

• Maps the major proprietary Fieldbus standards (overview)
  • Type 1 — FOUNDATION Fieldbus H1
  • Type 2 — ControlNet
  • Type 3 — PROFIBUS/PROFINET
    • PROFIBUS : industrial network system for real-time distributed control
    • PROFINET : a set of Fieldbus protocols
  • Type 4 — P-Net
  • Type 5 — FOUNDATION Fieldbus HSE (High Speed Ethernet)
  • Type 6 — Interbus
  • Type 7 — Boeing SwiftNet
  • Type 8 — WorldFIP