摘要
针对西门子PPI协议不公开的特点,通过侦听获得PPI协议的数据报文,详细分析了该协议的具体内容,介绍了该协议在触摸屏软件的编程过程中所遇到的问题,并采用该协议实现了触摸屏与S7-200PLC之间的通讯。
With the un-opened characteristic of the SIEMENS PPI protocol content,this article maintain the data of PPI protocol through interception.Analyse this protocol content in detail,and introduce the problem during programming process,also use the protocol to realize the communication between the SIEMENS S7-200 PLC and Touch Pane.I
出处
《工业控制计算机》
2006年第4期13-14,共2页
Industrial Control Computer
