SIMATIC WinCC Server / WinCC Client (TIA Portal)

Setup of a multi-user SCADA system


A multi-user system is used whenever the same process is to be monitored at several operator stations. When the option is used, several operator control and monitoring stations are coordinated to operate together with networked automation systems. The server supplies the connected clients with process and archive data, messages, pictures and logs. The result of an operator action at one operator station, for example, changing a value or message acknowledgment, is immediately available to all other operator stations.


  • Integrated scalability from the single-user system to the client/server solution

  • Economic solution for SCADA applications with higher complexity

  • Configuration of distributed operator stations with little effort


The server establishes the connection to the automation system, handles the communication and coordination of the clients, and performs all archiving in the integrated Microsoft SQL database. WinCC clients access the configuration data of the server directly. Access rights are used to define the functions or plant sections that are available to a user on an operator station. The configured authorizations are user-related, not computer-related. They therefore work with all operator stations with the same login.


The following licenses are required for setting up a multi-user system:

  • WinCC Server license on the server in addition to a WinCC RT Professional license

  • One WinCC Client license on each client.

Software and licenses

Article No.

SIMATIC WinCC Client for WinCC Runtime Professional V15.1

SIMATIC WinCC Server for WinCC Runtime Professional

You can find more information about SIMATIC licenses, the Software Update Service, the topic Online Software Delivery and how you get supported by the tools Automation License Manager and SUS Manager at: