Society of Automotive Engineers standard SAE J1708 is a standard used for serial communications between ECUs on a heavy duty vehicle and also between a computer and the vehicle. With respect to Open System Interconnection model …

In this post, we are going to get more in-depth on the J1708 datalink, also referred to as J1587. This is the primary protocol found on the 6-pin diagnostic connectors that were used from the early 1990s to the mid-2000s.

J1708 is an SAE specification developed especially for heavy duty vehicles (trucks and busses). The intention is that the protocol will promote a standard for serial communication between modules with microcontrollers.

SAE J1708 is a standard used for serial communications between ECUs on a heavy duty vehicle and also between a computer and the vehicle. With respect to Open System Interconnection model (OSI), J1708 defines the physical layer.

J1708 is based on RS-485electrical specifications and benefits from the ruggedness, low cost and availability of compliant ICs are already on the market. The DS36277 transceiver has been optimized for J1708. It provides failsafe protection against bus faults and eliminates the need for an external inverter.

J1708 – THE FIRST STANDARD. In the early to mid-1990s is when we first saw the standard 6-pin plug placed in commercial trucks. This would be used for the next 10-15 years, and we now saw computerized diagnostic tools enter the market.

2001年11月14日 · Discover the nuances between J1708 vs J1939 vehicle bus standards and gain an understanding of these vehicle communication protocols.

This SAE Recommended Practice defines a recommended practice for implementing a bidirectional, serial communication link among modules containing microcomputers.

Engineering Level - You need both J1587 + J1708 document to understand the requirements for the hardware and the basic protocol. You can purchase these documents from SAE website. Links are at the bottom. The message format for J1587/J1708 fault codes. Why is this relevant?

2022年3月16日 · The SAE specification J1587 defines the format of the messages and data that is being communicated. The SAE specification J1708 defines the hardware requirements and the protocol of the serial communications. Some electronic dashboards use this data link to receive information. Some automatic transmissions also receive information from this ...