Siemens SIMATIC PCS 7 Function Manual page 198

Failure, Switchover and Return of Fault-tolerant Components
6.10 Guidelines for updating a redundant OS in runtime
● Install or update the operating system (information is available in the manual
● Install the necessary PCS 7 components.
● Make the necessary settings.
Note that Windows administration of PCs should be performed by a Windows administrator.
You can find a detailed description of the PCS 7 installation and the required PCS 7-specific
settings for PC stations in the manual
Authorization .
Phase 1 / 4. ES: Download OS connection data and OS target system
● Open
● Right-click on the OS to be transferred in the open PCS 7 project below the WinCC
Phase 1 / 5. Server_2: Start WinCC
● Start WinCC on Server_2.
Phase 1 / 6. Server_2: Check and save the "Redundancy" dialog box
● Open the "Redundancy" editor and check the settings in the dialog box. Click "OK" to exit
Phase 1 / 7. Server_2: Check and save the "Time Synchronization" dialog box
● Open the "Time Synchronization" editor and check the settings in the dialog box. Click "OK"
Phase 1 / 8. Client_2: Deactivate process mode and exit WinCC
● Deactivate the process mode on all clients where Server_2 is set up as preferred server.
Phase 1 / 9. Server_2: Activate WinCC Runtime
● Activate WinCC Runtime on Server_2.
Phase 1 / 10. Other redundant OS server pairs: Repeat steps 1 to 9
198
Control System PCS 7; PC Configuration and Authorization ).
An OS server can only run on a server operating system which has been released for PCS 7.
You can find additional information on this in the
Readme documentation.
In the PCS 7 Setup, select the "OS Server" check box in the "Program Packages" dialog
box.
NetPro and download the connection data from the ES to Server_2.
application. Select the menu command PLC > Download to Current Project > Selected
Station in the shortcut menu.
This starts the transfer from the ES to Server_2.
the dialog box even if you have made no changes.
to exit the dialog box even if you have made no changes.
Note
In WinCC Explorer (Server data), you can activate Server_1 for operation as preferred
server for Client_2 within the phases 1 and 2. This setting retains operability of the clients.
The system reacts as follows:
– There is no server failover. Depending on the configuration, the activated Server_2
becomes the standby or master server.
– All OS clients still receive their visualization data from OS server Server_1, which has
not yet been updated.
Process control system PCS 7; PCS 7
Process Control System PCS 7; PC Configuration and
Fault-tolerant Process Control Systems (V8.0)
Function Manual, 03/2012, A5E02779471-02
Process