IEC 61784-2-19:2023

Overview

IEC 61784-2-19:2023 is an international standard published by IEC that defines extensions to Communication Profile Family 19 (CPF 19) for real-time Ethernet (RTE) applications. CPF 19 leverages the internationally recognized ISO/IEC/IEEE 8802-3 (Ethernet) and integrates additional performance and synchronization features for industrial networks. The standard delineates real-time fieldbus communication profiles and specifies the relevant performance indicators for industrial automation, promoting the reliable use of Ethernet technologies in applications demanding predictable and synchronized data exchange.

IEC 61784-2-19:2023 provides a foundation for vendors and users to develop interoperable industrial Ethernet networks that meet stringent real-time and synchronization requirements, while maintaining compatibility with IT infrastructures.

Key Topics

• Communication Profile Family 19 (CPF 19): This family of profiles is based on the IEC 61158 series (Type 27) and ISO/IEC/IEEE 8802-3 standards for real-time Ethernet. CPF 19 supports four profiles, including MECHATROLINK-II, MECHATROLINK-III, ∑-LINK II, and MECHATROLINK-4.
• Profile 19/4 (MECHATROLINK-4): This new extension operates over Ethernet PHY at 100 Mbit/s or 1 Gbit/s, offering higher bandwidth and enhanced real-time capabilities for industrial environments. Mixed-speed operation within the same network is not permitted.
• Performance Indicators: The standard defines critical performance indicators for RTE, including delivery time, the number of end-stations, network topology, throughput, bandwidth, and synchronization accuracy.
• Standardized Layers: Profiles mandate the use of specific layers from the IEC 61158 series for application, data link, and physical communications, ensuring a robust framework for implementation.
• Interoperability and Compliance: By aligning with recognized standards and specifying dependencies among performance criteria, IEC 61784-2-19 reduces divergent implementations and standardizes RTE communication protocols for industry.

Applications

IEC 61784-2-19:2023 is designed for industrial automation environments where real-time, deterministic, and high-performance Ethernet communication is critical. Practical use cases include:

• Factory Automation: Synchronization and reliable data exchange between controllers, drives, and field devices in assembly lines, packaging, and robotics.
• Process Automation: High-precision monitoring and control in industries such as chemicals, oil and gas, pharmaceuticals, and food processing.
• Motion Control Systems: Real-time synchronization of servos, actuators, and sensors in complex automation systems, especially using MECHATROLINK-III and MECHATROLINK-4.
• Integration with IT: Seamless coexistence with office and enterprise Ethernet networks, leveraging familiar protocols while meeting the unique needs of industrial communication.
• Networking Equipment Benchmarking: Manufacturers can use the standardized performance indicators to evaluate and certify network devices for compliance with industrial real-time requirements.

By enabling rapid, coordinated, and reliable communication, IEC 61784-2-19 supports advanced manufacturing strategies, Industry 4.0, and Internet of Things (IoT) initiatives in industrial settings.

Related Standards

IEC 61784-2-19 is part of a wider structure supporting standardized industrial networking:

• IEC 61158 Series: Specifies fieldbus protocols for industrial communication, including physical, data link, and application layers.
• ISO/IEC/IEEE 8802-3: The globally accepted Ethernet standard for both enterprise and industrial networks.
• IEC 61784-1 Series: Defines core fieldbus profiles for various application families, complementing the real-time profiles in IEC 61784-2.
• IEC 61784-2-0: Covers general concepts and definitions for additional real-time fieldbus profiles based on Ethernet.
• Other Profiles in IEC 61784-2: Describe additional CPFs for diverse industrial requirements and vendor solutions.

Organizations relying on industrial Ethernet and real-time fieldbus protocols can achieve global interoperability, future-proof scalability, and secure, high-performance automation networks by referencing these harmonized standards.

Keywords: industrial Ethernet, real-time Ethernet, fieldbus profile, IEC 61784-2-19, CPF 19, MECHATROLINK-4, industrial automation networks, ISO/IEC/IEEE 8802-3, IEC standards, performance indicators, synchronization, automation protocol, interoperability.