CAN总线网络节点的实现及应用

Realization and Application of Network Node for CAN Bus

为了安全传送现场采集的数据,选择了CAN总线作为现场总线.利用独立CAN控制器SJA1000及普通的单片机可以组成通用的CAN总线网络节点,其应用范围广泛,可以扩展成现场测控装置(开关量输入输出装置).该装置和上位机通信可以组成简单的集散控制系统.此网络节点方案已通过调试,可直接应用到其他系统中.

In order to transmit the data from field reliably, CAN bus is selected as the field bus. A universal CAN bus network node can be built with a SJA1000, which is an independent CAN controller and a normal microprocessor. It can be used in many places, including field measure and control device, such as digital input/output device. These devices communicate with a server and thus forms a simple distributed control system. The scheme for the network node has been debugged so that it can be used in other systems directly.