风能作为一种高效、清洁、可再生的能源,越来越受到世界各国的重视,中国新能源战略把大力发展风力发电设为重点。近几年,由于风能的诸多优点以及国家政策的大力支持,国内风力发电行业得到了快速的发展。风力发电系统中各个设备之间需要通信,CAN总线是国际风电行业中流行而且应用成熟的通信方式,基于CAN总线应用层的CANopen协议对所有设备做出了“设备级” Wind energy, as an efficient, clean and renewable energy source, has drawn more and more attention from all over the world. China’s new energy strategy has made it a priority to vigorously develop wind power. In recent years, due to the many advantages of wind energy and the strong support of national policies, the domestic wind power industry has enjoyed rapid development. The wind power system needs communication among all equipments. The CAN bus is a popular and mature communication method in the international wind power industry. The CANopen protocol based on the CAN bus application layer makes “equipment-level”