Myaca the Producer Blog

Need a J1587 introduction? The J1587 is a networking specification which defines messages that are transmitted on a J1708 network. The J1708 network is going to specify the datalink and physical layers for a J1587 network, while the J1587 is going to specify the transport, network, and application layers. The J1587 is also similar to the J1922 model, which also defines messages for a J1708 network and contains the same three ISO layers.

The J1587 uses messages for vehicle diagnostic purposes. For instance, it sends messages for fuel economy, coolant temperature, fault codes and many other automotive needs that require a parameter. The J1587 defines around 300 specific parameters. The J1587 does not specifically send control type messages, instead that is handled by J1922

When it comes to the J1587 framing, all messages start with a message identifier which indicates the source address of the transmitting node. The parameter identifier indicates what parameter the following data corresponds to. The data and its length are defined by the parameter identifier.

In the automotive industry it is important to have a comprehensive understanding of these components and to specifically identify which components are responsible for particular messages. As an engineer you have a responsibility to select the right components to make sure that your vehicles remain defect free. Trust a product by an embedded system industry manufacturer that is committed to creating products at the forefront of technology that can improve upon previous designs and make necessary changes required to increase a system’s operational accuracy and speed.

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