Technical data

Setting Up and Editing the Project
6.3 What You Should Know About The Change Log
Programming with STEP 7
158 Manual, 05/2010, A5E02789666-01
6.3 What You Should Know About The Change Log
As of STEP 7 V5.4, after setting up access protection for projects and libraries, you have the option
of keeping a change log that records online actions.
Examples include:
• Activate / deactivate / configure the access protection and change log
• Open / close projects and libraries
• Download to PLC (system data)
• Selected operations for loading and copying blocks
• Activities for changing the operating mode
• Clear/reset
You can display the change log and enter comments such as those explaining changes that you
have made. This functionality is available only if SIMATIC Logon is installed.
To enable the change log, go to the SIMATIC Manager and select the menu command Options >
Change Log > Enable. After you have enabled the change log, your can view it with the
appropriate menu command or disable it again.
Depending on the object you have selected in the project structure (for example project folder or
lower-level station), the corresponding change log is displayed.
Note
• The Options > Access Protection >Remove Access Protection and Change Log function
allows the project or the library to be used with a STEP 7 version lower than V5.4. You do,
however, lose the information on the users that are allowed access to this project or library and all
change logs.
• To use this function, you must be authenticated in SIMATIC Logon as project administrator and
access protection must be enabled for this project.