Web Server - Siemens SIMATIC S7-1500 Function Manual

General information
2.1 Properties of the Web server
Note
If you access the web server of the CPU using a communications processor (CP), ensure
that the cache (temporary Internet files) is enabled in your browser. Choose the
"Automatically" option in the cache settings of your browser.
If the cache is disabled or if a setting other than "Automatically" is made in the cache settings
of your browser, this may result in slow access times and incomplete display.
Note
After a firmware update of the CPU, incorrect display of Web pages can occur in various
Web browsers. This is caused by problems of the new CPU firmware with the cache of the
Web browser.
Solution: Press F5 or clear the Web browser cache.
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Function Manual, 11/2019, A5E03484625-AG

Web server