What is IEC 62439-4 Ed.2 2018?

IEC 62439-4 Ed.2 2018 is a technical standard that provides guidelines for the implementation of Industrial Automation Control System (IACS) networks. It addresses the requirements for redundancy and availability of IACS networks, which are critical in ensuring uninterrupted operations in industries such as manufacturing, energy, and transportation.

Key Features

The standard outlines several key features that need to be considered when designing and implementing IACS networks. These features include redundancy protocols, network topologies, and network management best practices.

Redundancy Protocols

One of the main focuses of IEC 62439-4 Ed.2 2018 is the use of redundancy protocols to ensure network availability. The standard defines protocols such as Media Redundancy Protocol (MRP), Parallel Redundancy Protocol (PRP), and High-Availability Seamless Redundancy (HSR). These protocols provide fault-tolerant communication paths and enable seamless switchover in case of link or device failures.

Network Topologies

The standard recommends different network topologies based on the specific requirements of the IACS application. These topologies include ring, mesh, star, and combinations thereof. Each topology has its own advantages and should be chosen based on factors such as network size, performance requirements, and fault tolerance.

Network Management Best Practices

Proper network management is crucial for maintaining the reliability and availability of IACS networks. IEC 62439-4 Ed.2 2018 provides guidelines for monitoring and managing the network infrastructure, including network configuration, performance monitoring, and network security measures. Following these best practices helps ensure efficient network operation and reduces the risk of downtime or data loss.

Conclusion

IEC 62439-4 Ed.2 2018 is an essential standard for professionals involved in the design and implementation of Industrial Automation Control System networks. By following its guidelines, organizations can build robust and fault-tolerant networks that ensure uninterrupted operations and reduce the risk of costly disruptions. Investing in network redundancy, choosing the right topology, and implementing proper network management practices are critical for maintaining the reliability and availability of IACS networks in today's industrial environment.