SAE J1939DA-2025 PDF

Full title and description

St SAE J1939DA-2025 — SAE J1939DA: J1939 Digital Annex (Supplement). A machine-readable digital annex that compiles J1939 parameter (SPN) and message (PGN) data, SLOT identifiers, manufacturer ID codes, NAME functions and preferred addresses from the SAE J1939 family into a searchable, sortable electronic format intended to supplement the J1939 normative documents for vehicle networking and diagnostics.

Abstract

The J1939 Digital Annex provides consolidated technical data for the SAE J1939 series in an electronic spreadsheet-style supplement: complete SPN definitions where published in J1939-71, basic references to other documents where full definitions reside, and metadata (transmission rates, priorities, multipacket indicators, lengths, units and resolution) to support implementation, diagnostics, tool development and systems integration. It is updated periodically as the J1939 family evolves.

General information

• Status: Revised (periodically maintained supplement to J1939 documents).
• Publication date: 2025 (multiple 2025 revisions published, e.g., 2025-03-31 and 2025-06-18; the Digital Annex is maintained as incremental electronic revisions).
• Publisher: SAE International (Truck and Bus Control and Communications Network Committee).
• ICS / categories: Vehicle engineering; Road vehicles — On-board communication networks; Diagnostics; Communication protocols.
• Edition / version: 2025 revision series (product codes appear as J1939DA_2025xx for 2025 revisions — see specific revision code for exact file).
• Number of pages: Not applicable — distributed as a digital annex/electronic dataset (spreadsheet-style supplement) rather than a fixed printed-page technical report.

Scope

Defines and assembles J1939 parameter and message data for use alongside the SAE J1939 normative documents. The annex lists SPNs and PGNs with key fields (descriptions, lengths, resolution, units, default priorities, transmission rates, multipacket flags), as well as SLOT identifiers, Manufacturer ID codes, NAME functions and Preferred Addresses. For SPNs/PGNs whose full technical details are published in documents other than J1939-71, the annex gives basic details and references to the authoritative document. The annex is intended for implementers who need a consolidated, searchable electronic reference to the J1939 data elements.

Key topics and requirements

• Consolidated SPN (Suspect Parameter Number) and PGN (Parameter Group Number) tables with technical attributes (length, resolution, offset, units, ranges).
• Metadata for message transmission: priority, transmission rate, multipacket indicator and default data lengths.
• SLOT identifiers and allocation information used in higher-level J1939 services.
• Manufacturer ID codes, NAME function entries and preferred address listings for device identification and addressing.
• Cross-references to the specific J1939 documents that contain full normative definitions (e.g., J1939-71 and other J1939 parts).
• Delivered as an electronic dataset intended for import into tools, diagnostic software and integration workflows.

Typical use and users

Used by vehicle OEMs, tier‑1 suppliers, embedded and firmware engineers, diagnostics and test tool vendors, fleet integrators and systems validators. Typical tasks include ECU software implementation, message decoding/encoding, diagnostic tool development, systems integration, fleet telematics mapping and validation of J1939 communications. The digital format is particularly useful for automated toolchains, spreadsheets and database imports.

Related standards

Part of the SAE J1939 family. Most directly related to J1939-71 (vehicle application layer parameter definitions) and to other J1939 parts such as J1939-21 (data link/application header formats), J1939-73 (diagnostic messages) and the J1939 top-level documents; the Digital Annex provides a consolidated, searchable companion to those normative documents.

Keywords

J1939, J1939DA, Digital Annex, SPN, PGN, vehicle network, CAN, CAN J1939, diagnostics, SAE, electronic supplement, message definitions, manufacturer ID, NAME, preferred address.

FAQ

Q: What is this standard?

A: SAE J1939DA (Digital Annex) is an SAE-issued electronic supplement that compiles J1939 message and parameter data (SPNs/PGNs and related metadata) into a searchable digital format to support implementation and tool development.

Q: What does it cover?

A: It covers the data tables and metadata for J1939 messages and parameters (names, descriptions, lengths, resolutions, units, transmission rates, priorities, multipacket flags), plus SLOTs, Manufacturer ID codes, NAME functions and preferred addresses — and references to the full normative documents for complete technical definitions.

Q: Who typically uses it?

A: OEMs, ECU and firmware engineers, diagnostics tool vendors, integrators and test/validation teams who need a consolidated electronic reference for J1939 data elements and message attributes.

Q: Is it current or superseded?

A: The Digital Annex is maintained as periodic electronic revisions. While this product page references the 2025 revision series, SAE publishes incremental updates (example 2025 revisions and later updates); users should confirm the exact revision code/date they require because newer revisions (for example subsequent revisions published after 2025) may supersede particular 2025 files.

Q: Is it part of a series?

A: Yes — the Digital Annex is a supplement to the SAE J1939 series of standards and is intended to be used alongside J1939-71 and other J1939 parts. It is maintained by the Truck and Bus Control and Communications Network Committee as a companion dataset.

Q: What are the key keywords?

A: J1939, J1939DA, Digital Annex, SPN, PGN, vehicle networking, diagnostics, SAE International, electronic supplement.