RAPIEnet

RAPIEnet
Protocol Information
Type of NetworkOpen Real-time Ethernet
Physical LayerIEEE 802.3, Ethertype 0x88fe
Network TopologyRing or Line topology
Device AddressingDIP switch or hardware/software
Network ConfigurationAutomatically done by protocol

RAPIEnet (Real-time Automation Protocols for Industrial Ethernet) was Korea's first Ethernet international standard for real-time data transmission. It is an Ethernet-based industrial networking protocol, developed in-house by LSIS offers 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)

Features

RAPIEnet Technology

Protocol Stack Structure

Figure 1. RAPIEnet Protocol Stack Structure

Embedded dual port switch motion

Figure 2. RAPIEnet Embedded dual port switch motion

Frame Format

Figure 3. ISO/IEC 8802.3 RAPIEnet based RAPIEnet frame format

Topology

Figure 4. RAPIEnet chain topology
Figure 5. RAPIEnet ring topology

Recovery System

- Recovery time < 10 ms
Figure 6. RAPIEnet recovery system in a ring topology
  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

Figure 7. RAPIEnet Flexible Hybrid Structure
- Copper: Low installation costs with relatively big noise.
- Optics: High installation costs with low noise and relatively long wiring.

System Diagram Using RAPIEnet

Figure 8. System diagram using RAPIEnet

Acquired Standards

International Standards

Others

Other international standards in process

References

  1. 1 2 3 4 5 6 7 IEC 61158-4-21: 2010
  2. ↑ RAPIEnet related articles
  3. ↑ ISO/IEC 8802-3: 2000
  4. ↑ IEEE - Ether type
  5. ↑ IEC 61158-3-21: 2010
  6. ↑ IEC 61158-5-21: 2010
  7. ↑ IEC 61158-6-21: 2010
  8. ↑ IEC 61784-2: 2010
  9. ↑ IEC 62439-7[permanent dead link]
  10. ↑ IEC 61784-5-17[permanent dead link]