基于S7-300PLC的电力系统CDT规约的解析  

Analysis of CDT Protocol Based on S7-300 PLC in Power System

作　　者：卞绍顺[1] 干玲[1] 

机构地区：[1]中国矿业大学信息与电气工程学院

出　　处：《可编程控制器与工厂自动化（PLC FA）》2011年第7期48-51,共4页Programmable controller & Factory Automation(PLC & FA)

摘　　要：本文介绍了利用西门子通讯模块CP340实现对CDT规约的解析和处理的一种方法,从而实现西门子S7-300PLC和具有CDT规约的RTU的通讯。首先介绍了CDT循环式远动规约的特点,接着介绍了西门子通讯模块CP340的使用,最后完整的给出利用300PLC解析CDT规约的方法,实现三遥功能:遥信、遥测和遥控。In this paper,a method of analyzing and processing CDT protocol based on the Siemens communication module CP340 has been introduced,and the communication between Siemens S7-300 PLC and RTU based on CDT protocol has been carried out. The paper first introduced the characters of Cycle Distance Transmission protocol,then the use of Siemens communication module CP340,finally a complete method was been given out which can analyze CDT protocol using 300 PLC,and it can realize three remote functions：telesignalling,telemetry and remote controlling.

关 键 词：CDT规约 S7-300 PLC CP340 三遥 

分 类 号：TM764.1[电气工程—电力系统及自动化]