IEC 61158-6-19:2014

Overview

IEC 61158-6-19:2014 is an international standard developed by the International Electrotechnical Commission (IEC) that defines the application layer protocol specification for industrial communication networks, specifically focusing on Fieldbus specifications-Type 19 elements. This standard outlines the rules and structures required to manage the Fieldbus Application Layer (FAL) and Systems Management interfaces within automation systems, ensuring smooth interaction between users and the network’s application layer.

The third edition, published in 2014, replaces the previous 2010 edition and introduces significant technical revisions to improve performance, flexibility, and reliability in industrial communication environments. It aligns with the OSI Basic Reference Model (ISO/IEC 7498) and OSI Application Layer Structure (ISO/IEC 9545), providing a robust framework for application layer services.

Key Topics

• Fieldbus Application Layer (FAL) User Interface
  Defines protocol interactions at the boundary between users and the application layer, enabling consistent communication across industrial automation systems.

• Producer-Consumer Model Connections
  Introduced to optimize data exchange by allowing producers to send data to multiple consumers efficiently, reducing network traffic latency and improving scalability.

• Timestamping and Oversampling
  Enhanced mechanisms are included for accurate event timing and signal oversampling, critical for time-sensitive industrial processes requiring precision.

• Hotplug and Redundancy Features
  This edition improves support for hotplug (dynamic connection/disconnection) and system redundancy, boosting network reliability and uptime.

• Phase Switching and Error Handling Improvements
  Enhanced procedures for managing communication phases and error detection/recovery contribute to more resilient and fault-tolerant network operations.

• Protocol State Machines and Service Definitions
  Detailed state machines govern application relationship protocols, data link layer mappings, and system management services necessary for layered communication control.

Applications

IEC 61158-6-19:2014 is essential for:

• Industrial Automation Systems
  Facilitates real-time communication between control devices such as sensors, actuators, and PLCs (Programmable Logic Controllers) in manufacturing and process control.

• Fieldbus Network Implementations
  Provides standard protocol specifications necessary for deploying and maintaining Fieldbus networks that interconnect distributed automation equipment.

• System Integrators and Equipment Manufacturers
  Guides the design and testing of Fieldbus-compatible products to ensure interoperability and compliance within industrial communication ecosystems.

• Open Systems Environment Integration
  Supports agreements and testing methodologies required for incorporating various automation components into standard-compliant open systems.

Related Standards

• IEC 61158 Series
  A comprehensive set of standards covering Fieldbus specifications, including physical, data link, and application layers.

• ISO/IEC 7498
  OSI Basic Reference Model - the framework for layered communication architecture foundational to IEC 61158-6-19.

• ISO/IEC 9545
  OSI Application Layer Structure - defines the organization and services of the application layer consistent with this Fieldbus specification.

• IEC 61784-1 and IEC 61784-2
  Define combinations of Fieldbus protocol types and profiles, including intellectual property rights and usage restrictions related to protocol types.

Keywords: IEC 61158-6-19, Fieldbus specifications, industrial communication networks, application layer protocol, producer-consumer model, timestamping, oversampling, hotplug, redundancy, OSI model, industrial automation, system management, Fieldbus network standards.