The Network Layer document describes the requirements and services for Network Interconnection ECUs (NIECU) that enable electronic control units (ECUs) on different network segments of the vehicle 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 J 1939 protocol.
SAE J1939/31_201005 History
SAE J1939/31_202306
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SAE J1939/31_201809
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SAE J1939/31_201404
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SAE J1939/31_201005
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