IEC 61804-4-2020 PDF

Full title and description

Devices and integration in enterprise systems - Function blocks (FB) for process control and electronic device description language (EDDL) - Part 4: EDD interpretation. This international standard defines how Electronic Device Descriptions (EDD) shall be interpreted by EDDL applications to promote consistent use of EDDL constructs, improve portability of EDDs between tools and support interoperability across field device ecosystems.

Abstract

IEC 61804-4:2020 specifies rules and interpretation guidance for EDD (Electronic Device Description) content so that EDDL-capable applications interpret device descriptions consistently. The edition consolidates multiple prior variants from industry organizations (FieldComm Group, PROFIBUS/Pno, ISA100 WCI) and introduces clarifications and technical changes (for example, adding ISA100/GPE communication profiles, optimized-column-width layout rules, concatenation of labels/help and color banding for meter charts) to improve interoperability and portability of EDDs.

General information

• Status: Published / International Standard.
• Publication date: 24 June 2020.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 25.040.40 (Industrial process measurement and control); 35.240.50 (IT applications in industry).
• Edition / version: Edition 2.0 (2020).
• Number of pages: 291 pages (base IEC publication).

Scope

This part of IEC 61804 provides interpretation rules for Electronic Device Descriptions (EDDs) and guidance for EDDL applications so that device vendors and tool builders obtain consistent behavior across implementations. It is intended for developers of EDDs, EDDL application vendors, system integrators and device manufacturers who require portable, interoperable device descriptions across fieldbuses and communication profiles. The document indicates where profile deviations exist and gives interpretation detail that supplements the EDDL syntax and semantics specified in other parts of the series.

Key topics and requirements

• Formal interpretation rules for EDDL constructs to ensure consistent behavior of EDD-capable applications.
• Specification of how profile deviations are indicated and handled in context to support interoperability.
• Inclusion of communication profiles such as ISA100 and GPE in the interpretation rules.
• Layout and presentation guidance (optimized-column-width rules, concatenation of labels and help) for consistent UI rendering.
• Guidance on graphical elements such as color banding for meter-type charts and other visualization conventions.
• Requirements to improve portability of EDDs between different EDDL tools and fieldbus ecosystems (HART, FOUNDATION Fieldbus, PROFIBUS, ISA100 etc.).

Typical use and users

Typical users include device manufacturers (smart transmitters, actuators, I/O modules), EDDL/EDD application developers, system integrators, control-system vendors, and automation engineers responsible for tool implementation, device integration, commissioning and lifecycle management. Organizations use this standard to ensure that device descriptions behave predictably across configuration and maintenance tools and across multiple field communication profiles.

Related standards

IEC 61804-4 is part of the IEC 61804 series (Function blocks for process control and EDDL). Closely related parts include IEC 61804-3 (EDDL syntax and semantics) and IEC 61804-5 (EDDL builtin library and fieldbus profiles), both revised in 2020 to align with the consolidated EDDL approach. IEC 61804-4 (2020) replaces earlier IEC TR 61804-4 (2006) and the 2015 edition of this part. These companion parts define the language, semantics and builtin profiles that the interpretation rules in Part 4 reference.

Keywords

EDDL, EDD, Electronic Device Description, function blocks, FB, device description language, EDDL interpretation, interoperability, device vendor, FieldComm, HART, FOUNDATION Fieldbus, PROFIBUS, ISA100, device integration.

FAQ

Q: What is this standard?

A: IEC 61804-4:2020 is Part 4 of the IEC 61804 series; it supplies interpretation rules and guidance for Electronic Device Descriptions (EDDs) so that EDDL-capable applications interpret EDD content consistently and support interoperability.

Q: What does it cover?

A: It covers the interpretation of EDDL constructs, handling of profile deviations, presentation and layout guidance for EDD-driven user interfaces (for example optimized-column-width and label/ help concatenation), and visual conventions such as color banding for meter charts to ensure consistent application behavior across tools and fieldbus profiles.

Q: Who typically uses it?

A: Device manufacturers, tool and EDDL application developers, system integrators, control-system vendors and automation/commissioning engineers use the standard to ensure device descriptions are portable and behave predictably across different tools and communication profiles.

Q: Is it current or superseded?

A: IEC 61804-4:2020 is the current edition published on 24 June 2020 and replaces earlier editions (including the 2015 edition and the 2006 technical report). The IEC listing shows stability information for the edition.

Q: Is it part of a series?

A: Yes. It is Part 4 of the IEC 61804 series (Function blocks for process control and EDDL). Related parts include Part 3 (EDDL syntax and semantics) and Part 5 (EDDL builtin library and profiles), which were also updated in 2020 to harmonize EDDL across profiles and tool vendors.

Q: What are the key keywords?

A: Key keywords are EDDL, EDD, device description, interpretation, interoperability, function blocks (FB), FieldComm, HART, FOUNDATION Fieldbus, PROFIBUS, ISA100, device integration.