本系统所实现的是对CAN总线采集到的数据的发送和接收功能，上位机把即将发送的数据通过该界面启动和将其发给下位机，下位机也能发数据给上位机-achieved by the system of the CAN data collected by the sender and receiver functions, PC forthcoming send data through the interface and to start to the next crew, the next crew ca