IEC 61158-5-5:2014

Overview

IEC 61158-5-5:2014 is an international standard developed by the International Electrotechnical Commission (IEC) that specifies the application layer service definition for Type 5 elements within industrial communication networks utilizing fieldbus technology. This standard is part of the broader IEC 61158 series covering fieldbus specifications. It provides detailed definitions of services offered to the Fieldbus Application Layer (FAL) user, precisely at the interface between the application layer and Systems Management in the fieldbus reference model.

This second edition of IEC 61158-5-5:2014 replaces the initial 2007 release and includes technical revisions such as the addition of message padding capabilities. The standard aligns the fieldbus application layer services with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI application layer structure (ISO/IEC 9545), ensuring interoperability and consistent communication practices in industrial automation systems.

Key Topics

• Application Layer Service Definition
  Defines comprehensive services at the boundary between the fieldbus application layer and Systems Management, establishing clear protocols for communication and data exchange.

• Type 5 Fieldbus Application Elements
  Focus on Type 5 elements, specifying their communication models, interaction patterns, and service behavior within industrial networks.

• Conformance with OSI Models
  The standard conforms to ISO/IEC 7498-1 (Basic Reference Model for Open Systems Interconnection) and ISO/IEC 9545 (Application Layer Structure), providing a structured approach to service definition.

• Data Type and Communication Model Specification
  Includes formal definitions of data types used within the application layer and detailed communication model specifications such as Application Service Elements (ASEs) and Application Relationships (ARs).

• Systems Management Interface
  Specifies the interface and services between the application layer and Systems Management, facilitating efficient network and device management.

• Message Padding and Technical Revisions
  The 2014 edition introduces enhancements like message padding to improve data transmission effectiveness and reliability.

Applications

IEC 61158-5-5:2014 is primarily applied in industrial automation environments where reliable, standardized communication between field devices and control systems is critical. Key application domains include:

• Process Automation
  Enabling robust communication in chemical, oil, gas, and manufacturing plants, ensuring real-time data exchange for monitoring and control.

• Factory Automation
  Facilitating interoperability among controllers, sensors, actuators, and machines to optimize production lines and manufacturing workflows.

• Energy Management Systems
  Supporting communication for intelligent energy distribution, monitoring, and automation systems within smart grids and substations.

• Systems Management and Network Configuration
  Assisting in managing device configurations, diagnostics, and system monitoring through standardized interfaces between the application layer and Systems Management.

• Integration with OSI-compliant Networks
  Allowing seamless integration within layered network architectures following the OSI model for industrial communication.

Related Standards

IEC 61158-5-5:2014 is part of the IEC 61158 series, addressing various aspects of fieldbus communications. Related standards for enhanced context include:

• IEC 61158 (Industrial communication networks - Fieldbus specifications)
  The overarching framework covering physical layer to application layer aspects for fieldbus systems.

• IEC 61158-5-1 to 5-15 (Application layer service definitions)
  Other parts specifying service definitions for different fieldbus types and elements beyond Type 5.

• ISO/IEC 7498-1 (OSI Basic Reference Model)
  Providing the foundational architecture for open system interconnection, extensively referenced by IEC 61158-5-5.

• ISO/IEC 9545 (OSI Application Layer Structure)
  Detailing the application layer structure to which the Fieldbus application layer services adhere.

• IEC 61784 (Industrial communication networks - Profiles)
  Offering profiles for fieldbus communication relevant to the implementation of services defined in IEC 61158 parts.

Summary

IEC 61158-5-5:2014 is a critical standard defining application layer services for Type 5 elements in fieldbus industrial communication networks. By specifying detailed service interfaces and communication models congruent with OSI standards, it ensures interoperability, reliability, and efficient management in industrial automation systems. Its practical implementation supports diverse industrial sectors requiring robust and standardized communication for device interaction and network management.