J1939 Network Configuration

Define J1939 network configuration name and database file

  • Library:
  • Simulink Real-Time / J1939 Communication

    Vehicle Network Toolbox / J1939 Communication


The J1939 Network Configuration block is where you define a configuration name and specify the associated user-supplied J1939 database. You can include more than one block per model, each corresponding to a unique configuration on the CAN bus.


You need a license for both Vehicle Network Toolbox™ and Simulink® software to use this block.

Other Supported Features

The J1939 communication blocks support the use of Simulink Accelerator™ and Rapid Accelerator mode. Using this feature, you can speed up the execution of Simulink models. For more information on this feature, see the Simulink documentation.

The J1939 communication blocks also support code generation with limited deployment capabilities. Code generation requires the Microsoft® C++ compiler.


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The default value is ConfigX, where the number X automatically increases from 1 based on the number of existing blocks.

Programmatic Use


An example file name, enter J1939.dbc if the file is in the current folder; otherwise enter the full path with the file name, such as C:\work\J1939.dbc.

The database file defines the J1939 parameter groups and nodes, and must be in the .dbc format defined by Vector Informatik GmbH.

Programmatic Use


Introduced in R2015b