Web Server - Siemens SIMATIC S7-1500 Function Manual

Web browser
You need a web browser to access the HTML pages of the CPU.
The web browsers listed below have been tested for communication with the CPU. Other
web browsers may also work, especially newer versions. However, if problems occur with
web browsers not mentioned here that cannot be rectified, use one of the following tested
web browsers:
● Microsoft Internet Explorer (Version 11.x)
● Microsoft Edge (Version 44.x)
● Google Chrome (Version 75.x)
● Mozilla Firefox (Version 64.x)
● Opera (Version 58.x)
● Mobile Safari and Chrome for iOS (iOS 12)
● Android browser (Android 7.x)
● Chrome for Android (Android 7.x to 8 (certificates work only to limited extent in Android
8))
Note
If you are using Internet Explorer, disable "Compatibility view" in the settings ("Options"
menu).
Note
For access to display devices with low screen resolution, we recommend the use of basic
websites, see section Basic websites (Page 156).
Note
Older versions of the web browsers named above, which previously supported access to the
HTML pages of the CPU, continue to allow this. However, these older versions do not
support the new functions and HTML pages described in this edition.
Note
Two reserved communication connections are available to the Web server for
communication with the CPU.
Depending on the web browser used, different numbers of connections to the CPU are
established. If more connections are available, more communication connections will be
established.
If no more connections are available, display or functional problems may occur, because the
Web server will reject all other communication connections apart from the two that are
reserved.
For this reason, the web pages may not load fully.

Web server

Function Manual, 11/2019, A5E03484625-AG
General information
2.1 Properties of the Web server
15