| PPI协议分析 |
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| 引用本文： | 彭魏臻,麻红昭,张华,张伟.PPI协议分析[J].化工自动化及仪表,2006,33(4):47-50. |
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| 作者姓名： | 彭魏臻 麻红昭 张华 张伟 |
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| 作者单位： | 1. 浙江大学,材料与化学工程学院,杭州,310027
2. 浙江大学,智达信息工程研究所,杭州,310027 |
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| 摘 要： | 使用软件监听串口,记录Step7-Micro/SIN与S7-200 PLC通讯的PPI协议报文,参照PROFIBUS总线通讯协议,分析出PPI协议报文关键帧格式,实现读、写、锁定、解锁、连接测试、开停PLC等常用功能,可用于开发基于S7-200系列PLC、使用PPI协议进行通讯的上位机程序或轻量级的现场设备.
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| 关 键 词： | PPI协议 西门子PLC S7-200 串口通讯 |
| 文章编号： | 1000-3932(2006)04-0047-03 |
| 收稿时间： | 07 3 2006 12:00AM |
| 修稿时间： | 2006年7月3日 |
Study of PPI Protocol |
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| PENG Wei-zhen,MA Hong-zhao,ZHANG Hua,ZHANG Wei.Study of PPI Protocol[J].Control and Instruments In Chemical Industry,2006,33(4):47-50. |
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| Authors: | PENG Wei-zhen MA Hong-zhao ZHANG Hua ZHANG Wei |
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| Affiliation: | 1. College of Material Science and Chemical Engineering;2. lnsitute of Zhida Information and Engineering, Zhejiang University ,Hangzhou 310027, China |
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| Abstract: | By monitoring serial port,logging PPI packages of which Step7-Micro/WIN communicates with S7-200 series PLC,referring to PROFIBUS specification,we obtain the key format of PPI protocol frame,which can accomplish most basic functions such as read data,write data,lock/unlock PLC memory,connection test,start/stop PLC and so on.It brings much convenience for monitor programs development and light field equipments interrelated with S7-200 series PLC. |
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| Keywords: | PPI protocol Siemens PLC S7-200 serial communication |
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