对地铁SCADA通讯中断问题的分析

Analysis of Subway SCADA Communication Interruption

SCADA通讯中断主要由通讯网络故障和设备参数配置错误两个方面造成。该文从通讯网络和设备参数的配置两个方面对地铁SCADA通讯中断的问题进行了分析和阐述,并根据不同的通讯介质和通讯接口详细介绍了通讯故障产生的原因和排查处理方法。通讯网络故障方面文中根据通讯网络传输介质的不同,主要介绍了光纤网络和铜线网络的通讯原理,影响通道的因素及分析排查的方法。设备参数配置错误方面,主要介绍了数据寻址的原理,以及影响以太网和串口通讯的有关参数的配置及参数对通讯的影响。

SCADA communication interrupt is mainly caused by two aspects： communication network fault and equipment parameter configuration error. This paper analyzes and expounds the problem of the disruption of the SCADA communication from two aspects： communication network and equipment parameters,And according to the different communication medium and communication interface, the cause of the communication failure and the method of troubleshooting are introduced in detail. In the communication network, according to the different communication medium, the communication principle of the optical fiber network and the copper wire network is introduced, and the factors affecting the channel and the method of analyzing the network are introduced. In the aspect of equipment parameter configuration error, the principle of data addressing is mainly introduced, and the influence of the configuration and parameters of the configuration and parameters on the parameters of the Ethernet and serial communication are introduced.