IEC 61784-2-17:2023

Overview

IEC 61784-2-17:2023 is an international standard that specifies Communication Profile Family 17 (CPF 17) for industrial networks. It focuses on additional Real-Time Ethernet (RTE) communication profiles based on the ISO/IEC/IEEE 8802-3 standards, also known broadly as Ethernet. CPF 17 profiles are designed to enable real-time capabilities on industrial Ethernet networks, ensuring that communication remains deterministic, synchronized, and efficient for fieldbus applications.

This standard is part of the IEC 61784 series, which defines profiles for industrial communication networks used in automation and control systems. The document emphasizes the importance of combining standard Ethernet technology with specific adaptations to meet stringent industrial real-time requirements.

Key Topics

• Communication Profile Family 17 (CPF 17): Defines a real-time Ethernet communication profile including physical, data link, and application layers based on IEC 61158 (Type 21), ISO/IEC/IEEE 8802-3, and additional standards.
• Real-Time Ethernet (RTE) networks: The profiles ensure that standard Ethernet networks achieve the performance needed for industrial automation, including deterministic data transfer and precise synchronization.
• Performance Indicators (PI): Specifies relevant real-time performance metrics and their dependencies, enabling users to evaluate and select network devices that meet specific industrial application requirements.
• Profile Structure: CPF 17 details the architecture of one or more communication profiles (e.g., CP 17/1) with defined services and protocols at the Data Link Layer (DLL) and Application Layer (AL).
• Integration with Standards: The RTE profiles utilize and sometimes amend ISO/IEC/IEEE 8802-3 to incorporate real-time features while maintaining compatibility with Ethernet technologies widely used outside of industrial environments.
• Standard Compliance: All communication profiles within CPF 17 are based on internationally recognized standards or draft standards, ensuring interoperability and international consensus.

Applications

• Industrial Automation: CPF 17 is suited for automation systems requiring high-speed, deterministic communication such as factory floor control, robotics, and process automation.
• Fieldbus Networks: Real-time fieldbus communication benefiting from enhanced Ethernet technologies, ensuring synchronized and reliable control signals among drives, sensors, and controllers.
• Critical Control Systems: Systems that demand consistent, low-latency, and time-synchronized data exchange to guarantee safety, efficiency, and operational stability.
• Equipment Vendors and System Integrators: These stakeholders can utilize CPF 17 to design, validate, or integrate industrial network components and subsystems that adhere to global standards, ensuring interoperability across diverse devices.
• Networking Infrastructure: Manufacturers of switches, routers, and network components for industrial environments can implement CPF 17 profiles to optimize their products for real-time data exchange.

Related Standards

• IEC 61158 series: Provides the foundation for fieldbus communication specifications, influencing CPF 17 for defining data link and application layer services for Type 21 networks.
• IEC 61784-1 and IEC 61784-2 series: These series specify additional real-time fieldbus profiles and communication profile families, of which CPF 17 is a part.
• ISO/IEC/IEEE 8802-3 (Ethernet standards): The base Ethernet standard underlying CPF 17 communication mechanisms, adapted for real-time application.
• IEC 61158-3-21:2019 and IEC 61158-4-21:2023: Define data-link layer service and protocol specifications for Type 21 fieldbus elements used in CPF 17.
• Other IEC and ISO standards: Supporting documents referenced within CPF 17 ensure consistency across industrial network implementations.

Keywords: IEC 61784-2-17, CPF 17, Real-Time Ethernet, industrial networks, fieldbus profiles, ISO/IEC/IEEE 8802-3, real-time communication, IEC 61158, industrial automation, Ethernet, performance indicators, network synchronization, automation profiles, RTE communication, IEC standards.