Girish Mahajan (Editor)

RAPIEnet

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RAPIEnet

RAPIEnet (Real-time Automation Protocols for Industrial Ethernet) is Korea's first Ethernet international standard for real-time data transmission.

Contents

  • An Ethernet-based industrial networking protocol developed in-house by LSIS guarantees real-time transmission and is registered as an international standard. (IEC 61158-3-21: 2010, IEC 61158-4-21: 2010, IEC 61158-5-21: 2010, IEC 61158-6-21: 2010, IEC 61784-2: 2010, IEC 62439-7)
  • An embedded Ethernet switch with two ports enables the network expansion in a daisy chain without the need for an additional external switch, easy installation and wiring reduction.
  • With 100Mbit/s/1Gbit/s transmission speed, electrical and optical media can be used together.
  • Supports transmission modes such as Unicast, Multicast and Broadcast.
  • Supports "Store & Forward”and “Cut Through” switching.

    • International Standards

  • IEC 61158-3-21: 2010, Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements.
  • IEC 61158-4-21: 2010, Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements.
  • IEC 61158-5-21: 2010, Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements.
  • IEC 61158-6-21: 2010, Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements.
  • IEC 61784-2: 2010, Industrial communication networks - Profiles - Part 2: Additional fieldbus profiles for real-time networks based on ISO/IEC 8802-3.
  • IEC 62439-7, Industrial communication networks - High availability automation networks - Part 7: Ring-based Redundancy Protocol (RRP)

    • Embedded dual port switch motion

  • An embedded hardware-based switch is adopted for real-time data transmission.
  • With the full-duplex communication support, each node has dual link routes in a ring topology.

    • Frame Format

  • RAPIEnet Ether type: 0x88FE

    • Recovery System

  • With an embedded switch and full-duplex, it has dual link routes and communication fault tolerance, enabling fast recovery capabilities.
    • - Recovery time < 10 ms
    1. Transmits signal from Device 1 to Device 3.
    2. A fault occurs between Device 2 and Device 3.
    3. Notify the fault from Device 2 to Device 1.
    4. Transmits signal back from Device 1 to Device 3.

    Flexible Hybrid Structure

  • Fiber Optics/Copper Media
    • - Copper: Low installation costs with relatively big noise. - Optics: High installation costs with low noise and relatively long wiring.
  • Simple and efficient wiring is available by combining the features of two wires that have advantages and disadvantages.

    • Other international standards in process

  • IEC 61784-5-17, Industrial communication networks - Profiles - Part 5-17: Installation of fieldbuses - Installation profiles for CPF 17 (to be registered as an IEC international standard in 2012)

    • References

    RAPIEnet Wikipedia
    (Text) CC BY-SA