控制器局部网（CAN－CONTROLLER AREA NETWORK）是BOSCH公司为现代汽车应用领先推出的一种多主机局部网，由于其高性能、高可靠性、实时性等优点现已广泛应用于工业自动化、多种控制设备、交通工具、医疗仪器以及建筑、环境控制等众多部门。



1991年 9月 PHILIPS SEMICONDUCTORS制订并发布了 CAN技术规范（VERSION 2.0）。该技术规范包括A和B两部分

-Controller Area Network (CAN-CONTROLLER AREA NETWORK) is a BOSCH company is the leading modern automotive applications launched a multi-host the local network, because of its high performance, high reliability, real-time advantages are now widely used in industrial automation, and more kind of control equipment, vehicles, medical equipment and construction, environmental control and many other sectors. September 1991 PHILIPS SEMICONDUCTORS developed and released the CAN specification (VERSION 2.0). The specification includes two parts A and B