ELM325 Datasheet | ELM

ELM325 J1708 Interpreter Description With the advent of electronic engine controls, many vehicles also adopted some form of diagnostic tools to help monitor their operation. As more modules began to be used in vehicles, there was also a need for the devices to share information rather than each independently obtaining it from separate sensors. In the 1980’s, the SAE J1708 standard was created to provide a specification for a mon data bus to be used in heavy duty vehicles. It used RS485 wiring (already proven to be reliable in noisy environments), and a UART-based low speed data format. The SAE J1587 standard followed a few years later to describe the mechanism by which messages and...