Hirschmann RS20 Reference Manual page 78

Time
Parameters Meaning
Client Status Switches the SNTP client on and off.
External Server IP address of the SNTP server from which the
Address device periodically requests the system time.
Redundant IP address of the SNTP server from which the
Server Address device periodically requests the system time if
it does not receive a response to a request
from the "External server address" within 0.5
seconds.
Server Request Time interval at which the device requests
Interval SNTP packets.
Accept SNTP Specifies whether the device accepts the
Broadcasts system time from SNTP Broadcast/Multicast
packets that it receives.
Threshold for The device changes the time as soon as the
obtaining the deviation from the server time is above this
UTC [ms] threshold in milliseconds. This reduces the
frequency of time changes.
Disable Client Enable/disable further time synchronizations
after successful once the client, after its activation, has
Synchronization synchronized its time with the server.
Table 29: Configuration SNTP Client
Note: If you have enabled PTP at the same time, the SNTP client first
collects 60 time stamps before it deactivates itself. The device thus
determines the drift compensation for its PTP clock. With the preset server
request interval, this takes about half an hour.
Note: If you are receiving the system time from an external/redundant server
address, switch off the reception of SNTP Broadcasts (see "Accept SNTP
Broadcasts"). You thus ensure that the device only takes the time from a
defined SNTP server.
78
3.2 SNTP configuration
Possible values Default
setting
On, Off On
Valid IPv4 address 0.0.0.0
Valid IPv4 address 0.0.0.0
1 s - 3600 s 30 s
On, Off On
0 - 2147483647 0
31
(2 -1)
On, Off Off
RM GUI L2E
Release 8.0 05/2013