Abstract
Multi-node CAN bus network tended to have higher requirements for communication capability. In the multi-node CAN bus network which does not need application layer protocol of CAN bus to develop, with the increase of nodes, the difficulty of system maintenance and optimization increases. If a node breaks down, it is necessary to check all the nodes one by one to find the fault, which is inconvenient to troubleshoot. A method of communication state monitoring for multi-node CAN bus network is proposed, for multi-node CAN bus network, firstly, the program structure of communication state monitoring is designed, each node ID is set, then test data is sent, finally the communication state of all nodes is achieved and the error node information is displayed through the upper computer, rapid and reliable positioning of the wrong nodes is realized. The result shows that this method is an effective method for communication state monitoring.
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