Characteristics and functional roles of 6 pin J1708 male to 9 pin J1939 female cable

Characteristics and functional roles of 6 pin J1708 male to 9 pin J1939 female cable

The 6 pin J1708 male to 9 pin J1939 female cable is an important connecting component used in the field of automotive electronic communication. The following is an introduction to its characteristics and functional roles:

Interface features

6 pin J1708 male head: compliant with SAE J1708 standard, usually has 6 pins, used for transmitting signals based on J1708 protocol. The J1708 protocol is mainly used in the fields of heavy trucks and construction machinery. It is an asynchronous serial data communication protocol, and the pin definitions of the male header include signal positive, signal negative, power supply, etc.

9 pin J1939 female connector: Following the SAE J1939 standard, it has 9 pins for mating with the corresponding J1939 male connector. The J1939 protocol is a more advanced vehicle network communication protocol developed on the basis of J1708, and its female pin definition covers multiple functions such as data communication positive, data communication negative, signal grounding, power supply, etc.

function

Protocol conversion and communication: Implement communication connections between devices based on J1708 protocol and devices based on J1939 protocol. For example, in some vehicle system upgrades or renovations, it is necessary to connect the old J1708 equipment with the new J1939 system. This cable can act as a bridge, allowing devices of different protocols to communicate and work together.

Data transmission: The data generated by J1708 equipment, such as engine speed, oil temperature, oil pressure, etc., can be transmitted to relevant devices or systems in the J1939 network for processing, display, or storage. At the same time, it can also transmit instructions or control signals sent by the J1939 system to the J1708 device, achieving control and adjustment of the device.