Siemens SIMATIC NET SCALANCE W721-1, Configuration Manual

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Configuring with Web Based Management
5.5 "System" menu
SCALANCE W760/W720 to IEEE 802.11n Web Based Management
Configuration Manual, 11/2014, C79000-G8976-C350-03
155
● Last Synchronization Mechanism
This box displays how the last time-of-day synchronization was performed. The following
methods are possible:
–
Not set
The system time was not set.
– Manual
Manual time setting
– SNTP
Automatic time-of-day synchronization with SNTP
– NTP
Automatic time-of-day synchronization with NTP
– SIMATIC
Automatic time-of-day synchronization using the SIMATIC time frame
● Daylight Saving Time
Shows whether the daylight saving time changeover is active:
–
active (+1 hour)
The time in "Current System Time" is daylight saving time.
– inactive (+0 hours)
The time in "Current System Time" is not daylight saving time.
● Time Zone
Enter the time zone you are using in the format "+/- HH:MM". The time zone relates to
UTC standard world time. Settings for daylight-saving and standard time are taken into
account in this box by specifying the time offset.
● SNTP Mode
Select the synchronization mode from the drop-down list. The following types of
synchronization are possible:
–
Poll
If you select this protocol type, the input boxes "SNTP Server IP 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.
– Listen
With this type of synchronization, the device is passive and "listens" for SNTP frames
that deliver the time of day.
● SNTP Server IP 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.