- Overview
- 1. Introduction
- 2. General Description of the Protocol
- 3. Document Structure
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4. Fundamentals
- 4.1. Names and Addresses
- Device Address
- 4.2. Parameter Group
- General
- Structure and Type of a Parameter Group
- Example of a Global Parameter Group
- Example of a Specific Parameter Group
- Parameter Groups reserved specially for the Protocol
- 4.3. Data Management
- Suspect Parameter Number (SPN)
- SLOT Definition
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5. Network Management
- Network Access
- 5.1. Address Conflict
- Solution and Configurations
- Handling in a Dynamic Network
- 6. Transport Protocols (Multi-packet Messages)
- 7. Diagnostics
Identification
Each ECU that actively participates in J1939 communication (i.e. sending) requires a unique name. This is composed of a stream of 64 bits. Within the standard the device name is defined as NAME. It contains information that identifies and instantiates the device and describes the origin and function of the device. By means of the device name, an ECU can be identified uniquely worldwide and be described as a unique ECU. In addition, the device name is used to prioritize the ECU during dynamic address assignment (see chapter Network Management).
The J1939 NAME is composed as shown in figure “64-bit ECU Name Fields”.

Last modified: Tuesday, 17 April 2018, 8:28 AM