基于Modbus协议的TCS-3000 DCS系统与S7-200 PLC之间串行通讯网络的实现  

Serial Communication Network Based on Modbus Protocol Between TCS-3000 and S7-200

作　　者：刘波 张文三[2] 魏霞[3] 

机构地区：[1]华电新疆乌鲁木齐热电厂,新疆乌鲁木齐830065 [2]华电国际十里泉发电厂,山东枣庄277103 [3]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《工业控制计算机》2012年第2期33-35,共3页Industrial Control Computer

摘　　要：针对火力发电厂辅机专用控制器与DCS系统接口设计问题,研究了TCS-3000集散控制系统与第三方设备之间通讯接口扩展的基本方法,实现了以TCS-3000集散控制系统为主站、S7-200 PLC为从站的基于Modbus协议的串行通讯网络,解决了DCS系统以串行通讯方式可靠读取以PLC为核心的辅机专用控制器等第三方设备数据的技术难题,实践证明这种实现方法具有通讯可靠、稳定的特点,可在工程实践中进行推广应用。Aiming at problem of interface design between specific controllers and DCS system in power plant,the basic method how to expand communication interface between TCS-3000 DCS and third-party equipments is considered,the serial communication network based on the Modbus protocol was realized,the technical problem how DCS system read reliably data from the specific controllers based on S7-200 PLC with serial communication is resolved,the experiment has verified that the method has the characteristic of reliability and stability,and can be popularized in engineering practice.

关 键 词：TCS-3000 S7-200 MODBUS协议 串行通讯 

分 类 号：TM621.6[电气工程—电力系统及自动化]