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| 基于西门子S7 - 200 PLC的CDT远动规约的实现 | |
| 引用本文： | 魏 霞,刘 波,陈 科,刘 冉.基于西门子S7 - 200 PLC的CDT远动规约的实现[J].电力自动化设备,2012,32(6):103-106. |
| 作者姓名： | 魏 霞 刘 波 陈 科 刘 冉 |
| 作者单位： | 1. 新疆大学电气工程学院,新疆乌鲁木齐,830047 2. 华电新疆发电有限公司乌鲁木齐热电厂,新疆 乌鲁木齐,830065 3. 新疆电力公司调度中心,新疆乌鲁木齐,830002 |
| 摘 要： | 提出了在S7-200等小型可编程序逻辑控制器上实现CDT远动规约的设计方法。CDT协议栈程序主要由通信初始化、CRC校验和数据组帧、发送等部分组成。通过控制遥测帧及遥信帧的发送频次来满足CDT规约的"不同类型的数据帧采用不同优先级"的功能要求。实践证明该实现方法具有运行稳定、可靠及故障自诊断、自恢复的特点。 |
| 关 键 词： | 可编程序逻辑控制器 S7-200 CDT 自由口 通信 SCADA系统 |
Implementation of CDT protocol with S7-200 PLC |
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| WEI Xi,LIU Bo,CHEN Ke and LIU Ran.Implementation of CDT protocol with S7-200 PLC[J].Electric Power Automation Equipment,2012,32(6):103-106. | |
| Authors: | WEI Xi LIU Bo CHEN Ke and LIU Ran |
| Affiliation: | 1.College of Electncian Engineering,Xinjiang University,Urumchi 830047,China; 2.Urumchi Thermal Power Plant of Huadian Xinjiang Power Co.,Ltd.,Urumchi 830065,China; 3.Xinjiang Electric Power Company Dispatch Control Center,Urumchi 830002,China) |
| Abstract: | The implementation of CDT protocol with programmable logic controller,e.g.S7-200,is proposed.The CDT protocol stack program is mainly composed of following subroutines:communication initialization,CRC,data framing and sending.The sending frequencies of tele-metering frame and tele-signaling frame are controlled to meet the functional requirement of "different types of frame should apply different priorities".Practice verifies the features of the proposed approach:reliable and stable operation,fault self-diagnosis and self-recovery. |
| Keywords: | programmable logic controllers S7-200 CDT free port communication SCADA systems |
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