5.2 Important differences compared to previous versions
Introduction
Version
7.4
of WinCC provides new and enhanced functions as compared to the predecessor
version. An overview of the new features is provided in the section "What's New in WinCC
V7.4?".
Documentation of previous versions
As of WinCC V7, several WinCC controls have been replaced by new WinCC controls. You
can still use these controls in migrated projects.
You can find the documentation on the replaced WinCC controls after the description of the
current controls.
Changeover to SQL Server 2014 in WinCC V7.4
Starting in WinCC V7.4 SP1, Microsoft SQL Server 2014 SP2 32-bit is used.
If you are working with WinCC projects that were created with versions prior to WinCC V6.2
SP2, read the notes under "How to migrate SQL Server 2000 databases (Page 142)".
WinCC "OPC UA" channel: Changed configuration as of WinCC V7.4 SP1
As of WinCC V7.4 SP1, you fully configure the OPC-UA channel in the WinCC
Configuration Studio.
In tag management, the OPC UA connections are created parallel to the OPC channel.
When you use OPC UA in a WinCC project that was created with WinCC prior to V7.4, the
connections and tags are automatically migrated with the project.
Adhere to the following sequence if you have exported WinCC OPC UA tags:
1. Import the exported WinCC OPC UA tags.
2. Migrate the WinCC project.
WinCC Configuration Studio as configuration interface WinCC V7.3 and higher
WinCC Configuration Studio provides a simple and efficient means of configuring bulk data
for WinCC projects. The WinCC Configuration Studio replaces the previous procedure for the
following editors:
● Tag Management
● Tag Logging
● Alarm Logging
● Text library
● User Administrator
● Horn
● User archive
Migration
5.2 Important differences compared to previous versions
WinCC: General information and installation
138 System Manual, 02/2017, A5E40840020-AA
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