IEC 61784-1-2:2023

Overview

IEC 61784-1-2:2023 is an international standard published by the International Electrotechnical Commission (IEC). It defines the profiles for industrial communication networks, focusing specifically on Communication Profile Family 2 (CPF 2). CPF 2 outlines protocol-specific communication profiles used for device communications in factory automation and process control environments. This standard references the IEC 61158 series (Type 2) and integrates other globally recognized protocols and standards relevant to industrial network communications.

By establishing a consistent set of communication protocols, IEC 61784-1-2:2023 helps ensure interoperability, reliability, and efficiency in the design and implementation of fieldbus networks in industrial settings.

Key Topics

• Communication Profile Family 2 (CPF 2): Specifies protocol profiles based on IEC 61158 Type 2 and other standards.
• Protocol-Specific Profiles: Contains detailed communication profiles that identify compatible subsets of services and protocols for fieldbus devices.
• Device Communication: Supports interoperable communications for devices involved in both manufacturing and process control.
• Conformance and Compliance: Encourages the use of conformance tests and certifications, strengthening network reliability and compatibility.
• Three Main Profiles:
  • ControlNet™ (CP 2/1): Focuses on robust, real-time industrial process control networks.
  • EtherNet/IP™ (CP 2/2): Utilizes widely adopted Ethernet and IP technologies for high-speed, scalable communication.
  • DeviceNet™ (CP 2/3): Implements the CAN protocol for efficient device-level networking in automation.

Applications

IEC 61784-1-2:2023 applies to a wide range of industrial sectors where reliable, real-time, and standardized communications are essential. Key practical applications include:

• Factory Automation: Ensures standardized communication between controllers, sensors, actuators, and other field devices.
• Process Control: Supports integration of control devices within complex process networks, improving coordination and efficiency.
• System Design and Integration: Guides the selection of compatible communication profiles, reducing integration complexity and the risk of interoperability issues when deploying new or existing devices.
• Maintenance and Upgrades: Simplifies upgrading and maintaining automation systems by providing clear reference profiles for device communications.
• Cross-Vendor Interoperability: Facilitates compatibility between equipment from multiple manufacturers, protecting investments and future-proofing industrial communication infrastructure.

Companies applying this standard benefit from reduced downtime, higher network reliability, and easier expansion or modification of industrial networks.

Related Standards

IEC 61784-1-2:2023 is closely related to several other international standards that define and support industrial network communications:

• IEC 61158 series: The foundational collection of fieldbus specifications covering physical, data-link, and application layers.
• IEC 61784-1 (all parts): General profiles for industrial networks, including other Communication Profile Families.
• IEC 61784-2-2: Provides additional communication profiles for CPF 2, especially concerning safety and advanced applications.
• IEC 61784-5-2: Installation profiles and best practices for CPF 2 fieldbus networks.
• IEC 61918: Guidelines for installation of industrial communication networks.
• IEC 62026-3: Protocols for DeviceNet controller-device interfaces.
• Relevant ISO and IETF RFCs: Including ISO 11898 (CAN), ISO/IEC/IEEE 8802-3 (Ethernet), RFC 768 (UDP), RFC 791 (IP), and RFC 793 (TCP).

Adopting IEC 61784-1-2:2023 alongside these related standards ensures robust, scalable, and globally compatible industrial network infrastructures.

Keywords: IEC 61784-1-2, Communication Profile Family 2, CPF 2, industrial networks, fieldbus profiles, factory automation, process control, IEC 61158, ControlNet, EtherNet/IP, DeviceNet, industrial communication standards, interoperability, conformance.