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　 　西门子提供的最新软件：Simatic Net PC-Software CD 2005为各种组态软件的开发提供了一个统一的平台，它建立的PC站既为一些组态软件，如：WinCC、Protol等提供了与PLC的通讯平台，也提供 了一套编程接口，可使用高级语言编程通过Simatic Net访问PLC数据。本文讨论的主要就是这个编程接口,最新版的Simatic NET支持五种编程方式：

-Recommended 1 OPC Services Siemens offers the latest software: SIMATIC Net PC-Software CD 2005 for the development of a variety of configuration software provides a unified platform, it established PC station for configuration software, such as: WinCC Protol provide a platform for communication with the PLC also provides a set of programming interfaces, you can use the high-level language programming by the Simatic Net access PLC data. Discussed in this article is the programming interface, the latest version of Simatic NET supports five programming: