News Center

CAN bus characteristics J1939 communication protocol principle

CAN bus characteristics J1939 communication protocol principle


J1939 is a high-speed communication network that supports real-time closed-loop control functions between ECUs that may be physically distributed in the vehicle.


J1939 can perform all J1708/1587 functions, in addition to control system support.


J1939 uses the CAN protocol, which allows any ECU to transmit information on the network when the bus is idling.


Each message includes an identifier that determines the priority of the message, who sent it first, and what data it contains.


For each ECU unit, the opportunity to access the network is the same, but when multiple ECU colleagues request to transmit information, the information with the highest priority takes precedence


J1939 provides a complete network definition using 29-bit identifiers (CAN extended frames) defined in the CAN protocol.


The CAN protocol format.. is transmitted from 28 bits to 0 bits, while the identifier of the J1939 protocol format is transmitted from 1 bit to 32 bits, a total of 32 bits.


Related News

USB FTDI Cable IP67 waterproof round connector manufacturers introduce the development direction of the waterproof connector

USB FTDI Cable IP67 waterproof round connector Manufacturers tell you that the waterproof connector is a connector with the ability to work underwater, which can provide normal, safe, and reliable power supply and signal transmission to the electronic components, and can also play a very good role in the waterproof and dustproof effect.

What is Active Cable?

Using active cables has many advantages over passive cables. Our Premier Cable is an cable asemblies manufacturer over 18 years. Leave us messages now for more active cable details.

What is the difference between DB9 and RS232?

DB9 and RS232 are not the same thing. DB9 belongs to the connector model, while RS232 belongs to a communication protocol. Follow our Premier Cable to learn more different between them.

What is etherCON used for?

Are you looking for the Outdoor Entertainment Cat5e CAT6A etherCON Cable supplier? Our Prmier Cable is a 18+ years manufacturer in the cable harness, enabling on-demand matching and customization. Email us now for more details!

Axia AES Digital Audio Transmission

Are you looking for an Audio Video Cable wholesaler? Premier Cable is an 18+year cable harness assembly supplier specializing in cable assemblies and related products, providing more OEM customized cables than any other manufacturer.

Do I have to write frequency when using the walkie-talkie?

Are you looking for the radio programming cable supplier? Our Premier Cable specializes in providing walkie-talkie cables for various major radio programming brands: Mototala, Kenwood, HYT, Yaesu, ICOM, Baofeng.