SAE J1939-31 network layer describes the requirements and services for network interconnection ECUs (NIECU) that enable electronic control units (ECUs) on an SAE J1939 network segment to intercommunicate with other ECUs on different network segments of the vehicle or system network. This document defines various types of NIECUs. The information in this document applies only to ECUs that are intended to provide networking services. It is not necessary for an ECU to provide any of these services in order to be compliant with the SAE J1939 protocol.
Rationale:
This document has been updated to generalize comments related to SAE J1939 data link layer characteristics and behavior so those comments are applicable to both the SAE J1939-21 or an SAE J1939-22 data link layer. Numerous edits to properly use the term “PG data” instead of “data field” when referring to the data content for a PG. Numerous edits to properly differentiate between an SAE J1939 message and an SAE J1939 data frame. Noted that a gateway NIECU is required between an SAE J1939-21 network segment and an SAE J1939-22 network segment.
Included in: Vehicle Electrification Subscription Learn More
Related Topics:
Agricultural vehicles and equipment
Communication protocols
Electronic control units
Data acquisition and handling
Architecture
Vehicle networking
Also known as: SAE J 1939/31
Save money while getting up-to-date access to the standards you need! Subscribe to the SAE J1939 Standards Collection on the Web and get one year of anytime access and automatic updates to the J1939 family of documents, plus all cross-referenced and selected related documents.
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
