DCS与PLC的Modbus协议通信在石油化工厂的应用  

APPLICATION OF MODBUS PROTOCOL COMMUNICATION BETWEEN DCS AND PLC IN PETROCHEMICAL PLANTS

作　　者：李桢[1] 

机构地区：[1]中国石化股份有限公司茂名分公司化工分部,广东茂名525000

出　　处：《计算机应用与软件》2009年第4期185-187,219,共4页Computer Applications and Software

摘　　要：以Honeywell TPS系统和西门子S7系统通信为例,介绍DCS与PLC之间Modbus通信的实现,对系统硬件配置、连接、软件组态、通信冗余、通信速度提高进行了描述。The realization of Modbus Communication protocol between DCS and PLC is introduced through the instance of communication between Honeywell TPS and Siemense S7. Hardware configuration, connection, software configuration, communication redundancy and communication speedup, etc. are described as well.

关 键 词：DCS PLC MODBUS 通信 石油化工厂 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN915.04[自动化与计算机技术—控制科学与工程]