Siemens SIMATIC S7-1200 CP 1243-8 IRC Operating Instructions Manual page 180

Diagnostics and upkeep
6.6 Downloading firmware
4. In the parameter group "General", select the "Enable Web server for this interface"
option.
5. With a CPU version V4.0 or higher, create a user in the user administration with the
required rights.
You need to assign the right to perform firmware updates in the access level.
The procedure for establishing a connection to the Web server depends on whether you
have enabled or disabled the "Allow access only using HTTPS" option in the "General"
parameter group:
● Connection establishment with HTTP
Procedure if the "Allow access only using HTTPS" option is disabled
● Connection establishment with HTTPS
Procedure if the "Allow access only using HTTPS" option is enabled
These two variants are described in the following sections.
Requirement: The new firmware file is stored on your engineering station.
You will find the requirements for access to the Web server of the CPU (permitted Web
browser) and the description of the procedure in the STEP 7 information system under the
keyword "Information about the Web server".
Connection establishment with HTTP
1. Connect the PC on which the new firmware file is located to the CPU via the Ethernet
interface.
2. Enter the address of the CPU in the address box of your Web browser: http://<IP
address>
3. Press the Enter key.
The start page of the Web server opens.
4. Click on the "Download certificate" entry at the top right of the window.
The "Certificate" dialog opens.
5. Download the certificate to your PC by clicking the "Install certificate ..." button.
The certificate is loaded on your PC.
You will find information on downloading a certificate in the help of your Web browser and
in the STEP 7 information system under the key words "HTTPS" or "Access for HTTPS
(S7-1200)".
6. When the connection has changed to the secure mode HTTPS ("https://<IP address>/..."
in the address box of the Web server), you can continue as described in the next section
"Downloading firmware".
If you terminate the connection to the Web server, the next time you can log in with the
Web server without downloading the certificate using HTTP.
180
Operating Instructions, 02/2018, C79000-G8976-C385-03
CP 1243-8 IRC