Initial situation before phase 4
● Server_1 is master server in the PCS 7 project.
● The updated Server_2 is standby server in the updated PCS 7 project.
● Client_1 is connected to Server_1.
● Updated Client_2 is connected to its preferred server Server_2.
● The system can be controlled from all OS clients.
Requirement
The PCS 7 project you are updating has already been updated on the ES.
Procedure - Phase 4
Phase 4 / 1. Client_1: Deactivate and exit WinCC
● Deactivate WinCC Runtime and exit WinCC on OS Client_1.
Phase 4 / 2. Client_1: Backup of the PCS 7 project, of the operating system and of the PCS 7
software installation
● Back up your previous operating system, the previous PCS 7 software installation and your
current PCS 7 project as a fallback strategy.
Phase 4 / 3. Client_1: Installation or update of the operating system, PCS 7 Installation "OS
client"
● Install or update the operating system (you can find information about this in the manual
Process Control System PCS 7; PCS 7 PC Configuration
).
An OS client runs only on an operating system that has been released for PCS 7. You can
find additional information on this in the
Process Control System PCS 7; PCS 7 Readme
documentation.
● Install the necessary PCS 7 components.
In the PCS 7 Setup, select the "OS Client" check box in the "Program Packages" dialog
box.
● 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
Process Control System PCS 7; PCS 7 PC
Configuration
.
Phase 4 / 4. Client_1: If you want to use encrypted communication after the software update:
Activate "Encrypted communication" with migration mode. You can find information about this
in the documentation
Process Control System PCS 7; PCS 7 PC Configuration
.
Phase 4 / 5. ES: Download to OS target system
● Right-click on the OS to be transferred in the open PCS 7 project below the WinCC
application.
● Select the menu command PLC > Download in the shortcut menu. This downloads the
project for OS Client_1 from the ES to the relevant OS.
Failure, switchover and reintegration of high availability components
7.10 Guide to updating a redundant OS in runtime
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA 231
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