Siemens SCALANCE W780 Configuration Manual page 190

Configuring with Web Based Management
5.5 "System" menu
– NTP
– SIMATIC
● Time Zone
In this box, enter the time zone you are using in the format "+/- HH:MM". The time zone
relates to UTC standard world time.
The time in the "Current System Time" is adapted accordingly.
● Daylight Saving Time
Shows whether the daylight saving time changeover is active.
– active (offset +1 h)
– inactive (offset +0 h)
● SNTP Mode
Select the synchronization mode from the drop-down list. The following types of
synchronization are possible:
– Poll
– Listen
● SNTP Server Address
Enter the IP address or the FQDN name of the SNTP server.
● SNTP Server Port
Enter the port of the SNTP server.
The following ports are possible:
– 123 (standard port)
– 1025 to 36564
● Poll Interval[s]
Here, enter the interval between two time queries. In this box, you enter the query interval
in seconds. Possible values are 16 to 16284 seconds.
190
Automatic time-of-day synchronization with NTP
Automatic time-of-day synchronization using the SIMATIC time frame
The system time was changed to daylight saving time; in other words an hour was
added. You can see the current system time at the top right in the selection area of the
WBM.
The normal time including the time zone continues to be displayed in the "Current
System Time" box.
The current system time is not changed.
If you select this protocol type, the input boxes "SNTP Server Address", "SNTP Server
Port" and "Poll Interval(s)" are displayed for further configuration. With this type of
synchronization, the device is active and sends a time query to the SNTP server.
With this type of synchronization, the device is passive and "listens" for SNTP frames
that deliver the time of day.
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 03/2015, C79000-G8976-C267-08