WinCC/Web Navigator的广泛应用，表明在工业应用中，基于互联网的过程可视化已成为现实。Web Navigator使你能通过互联网、公司内部网或局域网操作设备，而不必改变WinCC项目。 这意味着，Web Navigator可提供如同本地操作员工作站这样的归档显示、操作员输入和访问控制。这还意味着显示的过程画面可包含用于动态序列的Visual BASIC脚本或C语言脚本，它使你能够通过用户接口在多种你愿意使用的语言之间切换，这也意味着Web上的操作员工作站已集成到本地用户管理系统内。

优点

• 最多50个客户机可同时进行远程操作和监视
  
• 基于事件驱动通讯，刷新速率快
  
• 客户机进行适配，使之以优化方式进行操作和监视、评估、维护和诊断
  
• 在不同平台上(PC，本地操作控制面板，PDA)的瘦客户机解决方案
  
• 可在任何时候添加Web客户机和终端客户机
  
• 由于有集中的软件管理，维护成本低
  
• 通常，组态的数据可供在Web 上使用而不需要改变它
  
• 通过分隔开WinCC服务器和 Web服务器而提高了安全性
  
• 使用全厂范围的用户管理，允许个别进行访问
  
• 高水准的安全性

全新应用领域

Web Navigator导航器除了在广域网 (WAN)领域的典型应用外，也可被应用于要求现金投资最小的项目。这包括具有高度分布结构的特殊应用 (如:水/污水)或者在其中只有对过程信息的偶尔访问(楼宇管理)。此外，你也可将Web客户机用作局域网上的标准操作员工作站。

Web服务器和客户机

对于这类组态，你需要一个Web Navigator服务器，其上安装了单用户版本或服务器版本的SIMATIC WinCC基本软件，同时需要安装了 Wi n d ows 的计算机作为We b Navigator客户机。通过有ActiveX 支持的Internet Explorer(对于 WinCC/Web Navigator V7.0，需要 MS Internet Explorer V7.0或更高版本)，该客户机可操作和监视运行中的WinCC项目，而在这台计算机上不必有WinCC基本系统。

使用WinCC V7.0和更高版本，可在任何WinCC(SCADA)客户机上建立这样的一种Web服务器。这意味着，连接到该服务器的一个Web客户机可从世界任何地方访问系统中多达12 个(有冗余的)WinCC服务器上的所有项目。在这样的情况下，Web客户机还可以透明地在下位的WinCC 冗余服务器之间进行切换。如果你在Web客户机上启动浏览器的几个实例，你还可以观察多个厂区，亦即同时访问多个Web服务器。

基于事件驱动的高性能通讯

WinCC/Web Navigator采用的通讯机制基于有高吞吐量的事件驱动传输，由此可实现在Web网上的高性能通讯。使用快速通讯连接，你可达到如同本地WinCC客户机那样的相同的刷新时间。

所得即所需的安全理念

分隔WinCC服务器和Web服务器保证了更大的安全性和可用性，通过在两个独立的SCADA客户机上组态独立的Web服务器，你甚至还可进一步提高安全性。在Web上的操作员工作站包括在工厂的本地用户管理范围内。

在访问Web服务器时，每个客户机都必须被验证。根据客户机已被组态的访问权限，它可以仅仅是观察设备或仅仅是操作设备。除此之外，Web Navigator支持所有可用于互联网上应用程序的公共安全机制，例如路由器、防火墙和代理服务器。它以标准的HTTP协议作为基础，因此不需要任何特殊的防火墙管理。如果你需要更完善的安全系统，可实施“安全套接层协议”(SSL) 加密， 或透明的“虚拟专用网” (VPN)技术。

瘦客户机解决方案

使用瘦客户机解决方案，你也可在 Wi n d ows 操作系统下(例如 Windows 9x，ME)连接简单的计算机、坚固的本地设备(例如有瘦客户机MP接口的SIMATIC MP370)和在 Windows CE下的移动式客户机 (PDA：个人数字助手)。类似这种解决方案对硬件的要求低，这是因为应用本身，亦即Web Navigator客户机是运行于基于Windows 2000 的终端服务器的，你可在这种服务器上最多连接25个瘦客户机。

与典型的Web Navigator系统不同，瘦客户机通常和服务器位于同一个局域网内。然而，通过WAN、 RAS，甚至通过内部网/互联网的访问也都是允许的。你可应用不同的媒介，如移动式无线电连接(例如 HSCSD)或无线局域网来集成移动式设备。服务器和客户机之间的网络连接是通过TCP/IP协议实现的。 RDP协议(远程桌面协议)用作传送协议，在客户机和服务器之间传输用户界面和控制台的工作。

用发布代替组态

Web组态程序(向导)可简化和方便 Web Navigator服务器的建立和组态，以便你能应用WinCC图形设计器采用通常方法来生成所需要的在互联网上可见的过程画面。通常你能够以本地项目为基础，而不必对它进行改动。Web发布向导优化了通过互联网传输和显示的画面。

选择授权

安装Web Navigator客户机软件不用付任何授权费用。要使用Web Navigator服务器，你需要有一份相应的(标准的)授权。有用于3、10、 25或50个客户机同时访问Web服务器的授权，可同时访问Web服务器。Web Navigator客户机则可以同时访问几个不同的Web服务器。

在这样的情况下，Web客户机和 Data@Monitor客户机以相同的方式计算(参阅第9页)；然而，这二种设备需要各自的授权。你可以使用任何你喜欢的不同的Data@Monitor Web Edition套件工具的任何组合；

通常，系统只考虑同时访问一个 Web服务器的客户机数量。

诊断客户机能确保对具有标准授权或成本最小化的诊断服务器授权的所有Web服务器进行访问。诊断客户机十分适合系统集成商，因为他们负责维护和服务散布在各地的系统。

作为集成平台的Web Navigator

如有需要，你也可将WinCC/Web Navigator作为一种集成平台使用。为此，可用Web Navigator实现用户友好的服务，以及作为分发用户定制对象(如控制器， 文件)到所连接的Web客户机的工具。如有需要，你可将这些组件集成到Web服务器导航系统内。

瘦客户机/服务器的计算

瘦客户机/服务器计算原理基于物理上分隔的数据、应用程序和屏幕输出。Windows 2000的终端服务允许应用程序—如同WebNavigator那样—在一台中央Windows 2000终端服务器(而不是在服务器其本身) 的主存储器内运行。

在这种情况下，客户机PC成为终端，其目的只是输入数据(通过键盘或鼠标)并将这些数据发送到一个终端服务器。终端服务器完成实际处理(例如更新过程画面)，然后再将最终的屏幕输出送回到客户机PC，由后者将它显示在其显示器上。

::::::English Description::::::

WinCC/Web Navigator allows you to visualize and operate your plant via the Internet or your company‘s Intranet or LAN – without needing changes in the WinCC project.

This means that the Web Navigator offers the same archive display, operator input and access options as the local operator stations. This also means that the displayed process pictures can contain Visual Basic  scripts for dynamic sequences, that you can access WinCC user archives, that  the system now supports operator messages on the web client and that the operator stations on the Web are integrated into the local user management.
Employing the new version of the WinCC/Web Navigator, you can also use Basic Process Control on the Web Navigator client, which offers additional objects and configuration tools to allow you to easily implement typical instrumentation and control technology requirements.

Apart from typical uses of the Web Navigator in the Wide Area Network (WAN) field, you can also use the Web Navigator for applications that must be implemented with a minimum cash investment. This includes in particular applications that have a highly distributed structure (water / sewage), or in which there is only intermittent accessing of process information (building management). 

Key benefits Operating and monitoring over long distances with up to 50 clients at the same time  Rapid update rates due to eventdriven communication Clients tailored in an optimum way for Operating & Monitoring, evaluation, service & diagnostics Thin-client solutions on different platforms (PC, local Operator Panels, mobile PDA) Minimal maintenance costs due to central software administration Normally application of configuration data for the Web without changing it  Increased security by separating WinCC servers and Web servers Individual access permissions with cross-plant user management Web- und Terminal-Clients can be added at any time  HMI-functionality comparable to WinCC clients  High security standards

Web-Server und -Clients 

The WinCC/Web Navigator consists of server components for the Web Navigator Server and of client components that must be installed on the Web Navigator Client computer on the Internet/Intranet. The web-server can be  a WinCC single-user station or any station in a WinCC Client/Server configuration. The client makes possible operating and monitoring of an ongoing WinCC project by means of an Internet browser with ActiveX support (for example MS Internet Explorer V6.0 or higher). As the WebNavigator client supports the terminal service of Windows 2000, Thin client solutions with mobile devices (e.g. PDA, MOBIC T8) and rugged on-site terminals (e.g. MP370 Touch) under Windows CE 3.0 can be realized. 

Licenses of your choice 

You can install the Web Navigator client software free of any licensing fees. To use the Web Navigator server, you need an appropriate (standard) license. There are licenses for 3, 10, 25 or 50 clients accessing the Web server at the same time (Web Navigator- or Dat@Monitor-Clients)., 
Diagnostics clients have guaranteed access to all Web servers with standard license or a cost-minimized Diagnostics Server license. Diagnostics clients are ideally suited for system integrators who are responsible for maintaining and servicing systems that are widely scattered.

Dedicated Web-Server

Starting with the Web Navigator V6.0, the Web server can also be installed on a WinCC client as a separate project
(dedicated web server). This makes possible distributed systems, in which the Web server simultaneously accesses up to 12 WinCC servers (also central archive servers).  All relevant screens and project functions are published by all subordinated WinCC servers on the dedicated Web server. For this, the Remote Publisher can be employed, which can be installed on any WinCC station without a Web server. With it, data can be published from any WinCC computer to a remote Web server. It is not necessary for the configurator to be present onsite - he/she can create, edit and publish screens from a remote WinCC configuration station.
The dedicated Web server also contributes to increased security by separating the Web server (at risk by attacks) from the WinCC production machine. Even if an attack stops the Web server, it will not result in an interruption of the process control or a loss of data.
If a dedicated Web server (on a WinCC client) is employed via redundant WinCC servers, this redundancy is also passed on to the Web clients. If a WinCC server fails, its redundant partner immediately takes over and no significant interruption of the process connection will be detectable at the Web clients.

Fig WinCC SCADA Client as Webserver

Server farms with load balancing 

If you need a very large number of Web operator stations at the same time, you can now configure server farms with several Web servers. For this, you need a load-balancing license for the Web servers involved. Load Balancing allows you to balance the load such that new Web clients are automatically assigned to the Web server with the lowest loading level at the time. In this connection, all the Web servers have access to the same WinCC project and can each have up to 50 Web clients assigned to them. This yields a total of several hundred operator stations on the Web. If the assigned Web server fails, the clients try to connect to another Web server in the server farm. You can also use this functionality for switching Web clients via redundant WinCC servers.
 

Web Navigator as Integration platform

The new Web Navigator navigation contains links to all Web-capable WinCC tools. This includes, among others, Scope, diagnostics pages and also download areas. It also integrates, if installed, Dat@Monitor tools and Web add-ons. Customers are able to easily expand this navigation by their own tools and Web servers.
A common navigation framework is created that makes it very easy for the user to utilize the various tools from a central location. For the expansion of WinCC configurations, a Plug-In Builderis used to create Web downloads. The user can package components as so-called Web-capable plug-ins and place them in the download area, from which they are available for installation by accessing Web clients. Version and installation information is managed client-specific. Files can include maintenance documents (DOC), process instructions (AVI), drawings (DXF) and reports (EMF, PDF).