Siemens S7-1200 System Manual page 612

Hide thumbs Also See for S7-1200:

Table of Contents

11.5 Standard Web pages

Your login times out after thirty minutes of inactivity. If the currently-loaded page is

continually refreshing, the login does not time out.

Unauthorized access to the CPU through the Web server

Unauthorized access to the CPU or changing PLC variables to invalid values could disrupt

process operation and could result in death, severe personal injury and/or property

Because enabling the Web server allows authorized users to perform operating mode

changes, writes to PLC data, and firmware updates, Siemens recommends that you

observe the following security practices:

• Enable access to the Web server only with the HTTPS protocol.

• Password-protect Web server user IDs (Page 190) with a strong password. Strong

• Perform error-checking and range-checking on your variables in your program logic

If you encounter any errors logging in, return to the Introduction page (Page 613) and

download the Siemens security certificate (Page 666). You can then log in with no errors.

passwords are at least eight characters in length, mix letters, numbers, and special

characters, are not words that can be found in a dictionary, and are not names or

identifiers that can be derived from personal information. Keep the password secret and

change it frequently.

because Web page users can change PLC variables to invalid values.

To log out, simply click the "Logout" link from any page

when viewing from a PC or wide mobile device.

From a small mobile device, navigate to the

"Logout" button.

System Manual, 03/2014, A5E02486680-AG

S7-1200 Programmable controller