ISO IEC IEEE 21451-4-2010 PDF

Full title and description

ISO/IEC/IEEE 21451-4:2010 — Information technology — Smart transducer interface for sensors and actuators — Part 4: Mixed‑mode communication protocols and Transducer Electronic Data Sheet (TEDS) formats. This part of the 21451 family specifies mixed‑mode communication protocols and the TEDS data formats used to describe and access analog transducers so they can interoperate with 21451 objects (NCAPs and related components).

Abstract

ISO/IEC/IEEE 21451-4:2010 defines the protocol and interface allowing analog transducers to exchange digital information with an ISO/IEC/IEEE 21451 object. It specifies mixed‑mode communication mechanisms and the structure/format of Transducer Electronic Data Sheets (TEDS) (building on the 21451‑2 TEDS model). The standard defines electrical and logical read/write access to TEDS and requirements to support a variety of transducer types, but it does not prescribe transducer design, signal conditioning, or application‑level uses of TEDS data.

General information

• Status: Published / confirmed (active as a published international standard)
• Publication date: May 2010 (commonly recorded as 15 May 2010 by IEEE and 20 May 2010 by ISO/IEC; officially cited as 2010‑05).
• Publisher: Joint ISO / IEC / IEEE publication (ISO/IEC JTC 1/SC 31 with IEEE Instrumentation & Measurement Society involvement)
• ICS / categories: 35.040.50 (Automatic identification and data capture techniques)
• Edition / version: Edition 1 (2010)
• Number of pages: 432 (official published edition)

Scope

This part of ISO/IEC/IEEE 21451 specifies the mixed‑mode communication protocols and the TEDS formats required to enable analog transducers (sensors and actuators) to present identification, calibration, and characteristic data in a standard machine‑readable form and to support read/write access to that data from an IEEE/ISO/IEC 21451 object. The scope includes protocol definitions, TEDS data structures (building on Part 2), electrical and logical access mechanisms, and interoperability requirements; it excludes transducer‑specific signal conditioning, sensor design, and application‑specific usage of the TEDS information.

Key topics and requirements

• Definition of mixed‑mode communication protocols for analog transducer interfacing with 21451 objects (NCAPs and equivalents).
• Specification of Transducer Electronic Data Sheet (TEDS) formats and required/optional TEDS fields (based on 21451‑2 TEDS model).
• Electrical interface characteristics and logical read/write functions to access TEDS and transducer data.
• Requirements to support a wide variety of analog transducers while maintaining interoperability with the 21451 family.
• Adoption/compatibility notes with IEEE 1451/21451 legacy elements (e.g., mapping to IEEE 1451.2 concepts where applicable).
• Conformance and interoperability objectives to allow plug‑and‑play discovery, identification and basic metadata exchange for sensors and actuators.

Typical use and users

Primarily used by sensor and transducer manufacturers, instrumentation and test equipment vendors, industrial automation and process control suppliers, system integrators, and organizations implementing interoperable sensor networks. Users include engineers designing smart transducer interfaces, firmware developers implementing TEDS read/write logic, and procurement/specification teams requiring a standardized transducer metadata and communication model for integration and calibration workflows.

Related standards

Part of the ISO/IEC/IEEE 21451 series of smart transducer interface standards. Closely related documents include ISO/IEC/IEEE 21451‑1 (NCAP information model), 21451‑2 (transducer to microprocessor communication protocols and TEDS), and other parts in the 21451 family (for example Part 7 for RFID mappings). The standard also aligns with and adopts concepts from the IEEE 1451 family (notably IEEE 1451.2) for smart transducer interfaces and TEDS.

Keywords

smart transducer, sensor interface, actuator interface, TEDS, Transducer Electronic Data Sheet, mixed‑mode communication, IEEE 1451, 21451 series, NCAP, interoperability, analog transducer, sensor metadata.

FAQ

Q: What is this standard?

A: ISO/IEC/IEEE 21451‑4:2010 is part of the 21451 family and specifies mixed‑mode communication protocols and the Transducer Electronic Data Sheet (TEDS) formats used to enable analog transducers to communicate digital metadata and basic data with 21451 objects (NCAPs and similar).

Q: What does it cover?

A: It covers protocol definitions, TEDS data structures (based on Part 2), electrical and logical read/write access to TEDS, and interoperability requirements for analog transducers. It does not cover transducer design, signal conditioning, or detailed application‑level use of TEDS data.

Q: Who typically uses it?

A: Sensor/transducer manufacturers, instrumentation vendors, firmware and embedded systems engineers, system integrators, and organizations building interoperable sensor and actuator systems use this standard for consistent metadata, discovery and low‑level communication between transducers and processors.

Q: Is it current or superseded?

A: The document was published in May 2010 (commonly recorded as 15 May 2010 by IEEE and 20 May 2010 by ISO/IEC). It remains the published edition (Edition 1, 2010) and was subject to the normal ISO periodic review cycle; no widely published superseding edition was available as of March 2, 2026.

Q: Is it part of a series?

A: Yes — it is Part 4 of the ISO/IEC/IEEE 21451 series (smart transducer interface). The series includes other parts (for example Part 1, Part 2, Part 7, etc.) that together define the NCAP model, other communication mappings, and TEDS conventions.

Q: What are the key keywords?

A: TEDS, smart transducer interface, mixed‑mode communication, IEEE 1451, 21451, sensor metadata, NCAP, analog transducer, interoperability.