Time-Of-Day Synchronization" Tab - Siemens SIMATIC S7-400 Operating Instructions Manual

Configuration and operation
4.7 Configuration of the CP in STEP 7 V5
"Options of Web diagnostics"
● "Download firmware via Web"
By enabling the option, the function for downloading the firmware of the CP from the
download center is enabled in the Web server.
● "Reload of language files for the diagnostics displays via Web"
Diagnostics displays of the CP are shown in plain language in the Web diagnostics
buffer. These displays are language speecific.
Enable the option, to enable the function for reloading missing language files from the
download center in the Web server.
"Automatic update"
● "Enable"
If the option is enabled, the CP updates the displayed Web pages regularly.
● "Update interval"
If the option is enabled, enter the interval here at which the CP updates the displayed
Web pages.
Range of values: 1..999 s
"Security configuration"
● "Allow access only via HTTPS"
If the option is enabled Web data is only transferred encrypted vai HTTPS. The option is
enabled as default and cannot be disabled.
● "Start of user administration"
If you click the "Run" button the SCT user administration opens. In the rights
administration, specify which users with which roles have access to the module via
HTTPS.
For details, see section Configuration in the SCT (Page 55).
4.7.6

"Time-of-day synchronization" tab

Synchronization method
Note
Recommendation for setting the time
If the infrastructure of your project allows, synchronization with a external clock at intervals of
approximately 10 seconds is recommended. This achieves as small a deviation as possible
between the internal time and the absolute time.
50
Operating Instructions, 01/2017, C79000-G8976-C427-02
CP 443-1 OPC UA