Siemens SIMATIC NET SCALANCE S615 Configuration Manual page 169

● NTP Server Port
Enter the port of the NTP server.
The following ports are possible:
– 123 (standard port)
– 1025 to 36564
● Poll Interval
Specify the interval between two-time queries. The greater the interval, the less accurate the
time of the device.
Possible values are 64 to 2592000 seconds (30 days).
The following columns are only relevant for a secure NTP client. If the check box "Secure NTP
Client only" is not selected, these boxes are grayed out:
● Key ID
Enter the ID of the authentication key.
● Hash Algorithm
Specify the format for the authentication key.
● Key
Enter the authentication key. The length depends on the hash algorithm.
The following minimum lengths are recommended for the hash algorithm:
– MD5: ASCII 16 characters
– SHA1: ASCII 20 characters
● Key confirmation
Repeat the authentication key.
Procedure
Time-of-day synchronization with NTP server
1. Click in the "NTP Client" check box to enable the automatic time setting using NTP.
2. In "Time Zone", enter the local time difference to world time (UTC).
The input format is "+/-HH:MM" because the NTP server always sends UTC time, for
example +02:00 for CEST, the Central European Summer Time. This time is recalculated
and displayed as the local time based on the specified time zone.
3. Select the "NTP Server Index".
4. Click the "Create" button.
A new row is inserted in the table for the NTP server.
5. In "NTP Server Address", enter the address of the NTP server whose frames are used to
synchronize the time of day.
6. In "NTP Server Port", enter the port via which the NTP server is available. The port can only
be modified if the address of the NTP server is entered.
7. In the "Poll Interval" column, enter the interval in seconds after which a new time-of-day
query is sent to the time server.
8. Click the "Set Values" button.
Time-of-day synchronization via a secure NTP server
SCALANCE S615 Web Based Management
Configuration Manual, 11/2019, C79000-G8976-C388-08
Configuring with Web Based Management
4.5 "System" menu
169