Siemens SIMATIC S7-1200 System Manual page 1573
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Also See for SIMATIC S7-1200:
- Function manual (527 pages) ,
- Manual (364 pages) ,
- System manual (338 pages)
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CPU password protection
STEP 7 sets the password protection level (Page 210) for the V4.2 CPU to be the equivalent
password protection level that was set for the V3.0 CPU, and assigns the V3.0 password to
the "Full access (no protection)" password for the V4.2 CPU:
V3.0 protection level
No protection
Write protection
Write/read protection
Note that the V4.2 access level "No access (complete protection)" did not exist for V3.0.
Web server
If you use user-defined Web pages in your V3.0 project, store them in your project
installation folder under the subfolder "UserFiles\Webserver" prior to upgrading your project.
If you store your user-defined pages at this location, saving the STEP 7 project will also save
the user-defined Web pages.
If you exchange a V3.0 CPU for a V4.2 CPU, your Web server project setting (Page 1003)
for activating the Web server and HTTPS setting will be the same as it was in V3.0. You can
then configure users, privileges, passwords (Page 1005), and languages (Page 1003) as
needed to use the Web server. If you do not configure users with additional privileges, then
you are limited as to what you can view from the standard Web pages (Page 1011). The
S7-1200 V4.2 CPU does not support the former pre-configured "admin" user and password.
The S7-1200 V3.0 Web server Data log page provided a "Download and Clear" operation.
The V4.2 Web server File browser page (Page 1037), from which you access data logs, no
longer provides this feature. Instead, the Web server provides the ability to download,
rename, and delete data log files.
Transfer card incompatibility
You cannot use a V3.0 transfer card (Page 139) to transfer a V3.0 program to a V4.2 CPU.
You must open the V3.0 project in STEP 7, change the device to a V4.2 CPU (Page 170),
and download the STEP 7 project to your V4.2 CPU. After you have changed your project to
a V4.2 project, you can then make a V4.2 transfer card for subsequent program transfers.
GET/PUT communication
By default, S7-1200 V3.0 CPUs enabled GET/PUT communication. When you replace your
V3.0 CPU with a V4.2 CPU (Page 170), you see a message in the compatibility information
section stating that GET/PUT is enabled.
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
Device exchange and spare parts compatibility
D.1 Exchanging a V3.0 CPU for a V4.2 CPU
V4.2 access level
Full access (no protection)
Read access
HMI access
1573
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