SIMATIC WinCC WebNavigator (TIA Portal)

Operator control and monitoring via Internet


The WinCC WebNavigator provides the capability of operating and monitoring a plant via the Internet or the company-internal intranet or LAN without the need for changes to the WinCC project. This results in the capability to display, operate and access logs just as for on-site operator stations. This includes that the displayed process screens can contain Visual Basic or C scripts for dynamic sequences, that the operator interface can be switched between several languages and that the operator stations on the web are integrated into the user administration of the plant on-site.

Suitable protective measures (among others IT-Security, e.g. network segmentation) have to be taken up to ensure a safe operation of the plant. You find further information about the topic of Industrial Security on the Internet under


  • Operator control and monitoring over long distances with up to 50 operator stations simultaneously

  • Fast update rates due to event-driven communication

  • Optimally tailored clients for operating and monitoring, analysis, service and diagnostics

  • Increased security and availability due to separation of WinCC and web server

  • Granting access rights using plant-wide user administration

  • High Internet security standards


In addition to the typical use in WANs (Wide Area Networks), the WinCC WebNavigator can also be used for applications that must be implemented at minimal cost. These include applications that have a pronounced distributed structure (e.g. water/wastewater) or in which access to process information is only sporadic (building management). In addition to this, web clients can also be used as normal operator stations on the LAN.

Web-Server and -Clients
For a web solution, the WebNavigator is installed on a WinCCsingle-user system or server and a WebNavigator client is setup on any Windows PC. This allows a running WinCC project to be operated and monitored via the own Internet client, Microsoft Internet Explorer,or via Terminal Services, without the need for a WinCC basic system on the computer.

A web client that is connected to the web server can access the projects of all (up to 12) WinCC servers in a plant from anywhere in the world. The projects can be displayed simultaneously in different tabs, e.g. via the multi-tabbing functionality of Microsoft Internet Explorer (Version 7 or higher).

A security concept made to order
The separation of WinCC servers and web servers already ensures greater security and availability, and this can be even further enhanced by means of independent web servers on two independent SCADA clients. The operator stations on the web are included in the user administration of the plant on-site. Different authorization levels govern who has which access rights.

The operator can either just view the plant (just monitor) or partially/fully operate it, depending on the configuration of his access rights. Every login and logout can be traced by means of a system alarm.

Thin client solutions
Via thin client solutions with Microsoft Terminal Services, simple PCs under a Windows operating system (e.g. Windows9x /ME), rugged on-site devices (e.g. SIMATIC Thin Client), and mobile clients (PDA – Personal Digital Assistant) under Windows CE can also be connected. Such solutions have few hardware requirements, because the clients only provide the screen display, while the application itself, i.e. the WebNavigator client, runs on the terminal server under Windows. Up to 25 thin clients can be connected to one terminal server.

In contrast to typical WebNavigator installations, the thin clients are generally located on the same LAN as the server.