Siemens SIMATIC HMI series - Upgrading a Redundant System in Normal Operation; Quick Reference Instructions: Upgrading Redundant Systems in Normal Operation

5.9 Upgrading a Redundant System in Normal Operation
5.9.1
Upgrading a Redundant System in Normal Operation
Introduction
You
update a redundant system to the new WinCC version in steps. This will not interfere with
plant operation.
Compare the initial situation described in the quick reference instructions with your system
and prepare your system accordingly.
Note
Framework Conditions for Upgrading During Ongoing Operation
A client may always only be connected to one server, on which the same WinCC version is
installed.
An upgrade in WinCC ServiceMode is not possible in logged off state.
Objective
● The automation system remains permanently in Runtime.
●
The process is constantly operable.
Process
Upgrading consists of the following phases:
1. Upgrading the Standby Server
2. Upgrade WinCC clients
3. Upgrading Master Server
4. Defining Master Server
5.9.2 Quick Reference Instructions: Upgrading Redundant Systems in Normal
Operation
Introduction
A redundant system in operation is upgraded in four phases. Each phase is divided into
individual working steps. The necessary working steps are listed in the Section "Procedure".
Detailed instructions are provided in the chapters "Phase 1" to "Phase 4".
Migration
5.9 Upgrading a Redundant System in Normal Operation
WinCC: General information and installation
150 System Manual, 02/2017, A5E40840020-AA