西门子工业以太网电缆 ，用于具有客户端/服务器结构的多用户系统的系统总线和 OS-LAN（终端总线）是通过工业以太网实施的，工业以太网是一个功能强大的单元网络，可按照国际标准 IEEE 802.3（以太网）的要求而用于工业应用。
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现场总线在应用中主要考虑其通信电缆、通信电源故障，“T”型分支或终端电阻故障也会引起总线故障。
The main facts we should consider are the trouble caused by the communication cable, communication power, t type branch or the terminal resistor problem in the application of site bus technology.
设计了以SO C嵌入式控制器为核心的终端，通过RS485总线与现场数字电压检测仪连接，建立了用电参数监测管理系统。
A terminal that SOC embedded controller is taken as the core has been designed to be connected with the apparatus of digital voltage detection by RS485 bus.
通过对SJA1000的详细分析，实现了利用CAN总线来进行变压器终端的通讯。
Under the detailed analysis of SJA1000, the Transformer Test Unit use CAN bus to perform the communication with others.
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