今天又升级了WinCC，现在是WinCC6.2 SP3,也安装了Connectivity Pack v6.2 sp3,相应的授权也已安装，在项目激活的情况下，在“Internet 信息服务”中的“网站”下也看到了“WinCC-OPC-XML”，但通过IE浏览器输入http://localhost/Wincc-OPC-XML/DAWebservice.asmx时还是不能看到相关网页的显示。
显示如下：
Server Error in '/Wincc-OPC-XML' Application.
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Parser Error
Des cription: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Could not load type 'Siemens.XMLDAWebService.Global'.

Source Error:


Line 1: <%@ Application Inherits="Siemens.XMLDAWebService.Global" Language="C#" %>



Source File: C:\Program Files\Siemens\WinCC\OPC\WinCC-OPC-XML\global.asax Line: 1


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Version Information: Microsoft .NET Framework Version:1.1.4322.2463; ASP.NET Version:1.1.4322.2463

另外，我安装了SIMATIC NET 2006的软件，这个软件支持OPC-XML,而且在安装时在“Internet 信息服务”中的“网站”下自动创建了“OPC.SIMATIC.NET”,安装帮助在IE浏览器中输入http://localhost/OPC.Simatic.NET/sopcweb.asmx 是可以显示相关内容的
如下：

OPCXML_DataAccess


The following operations are supported. For a formal definition, please review the Service Des cription.

Subs criptionCancel

GetStatus

Read

GetProperties

Write

Subs criptionPolledRefresh

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