Abstract
Motor vehicle and the instrument is the interface for the driver of the vehicle to provide the necessary operating parameters, faulutomobile dashboard of an inevitable trend.In this paper, the SCM agreement through the estat, mileage and other information, is essential for every car parts. It experienced a mechanical, electrical-and electronic analog circuit the development process, with a network of automotive electronics, CAN bus technology in the automotive sector has been increasingly widely used, so, CAN bus, has become embedded The future development of the ablishment of communication links CANbus way, it is the target of car dashboard system, thus simplifying the automotive wiring harness and reduce the cost of production cars. This article focuses on the use of SCM CAN bus instrumentation system design.