Setting The Time - Hirschmann RS20 User Manual

Synchronizing the System Time in the
Network

7.1 Setting the time

If no reference clock is available, you have the option of entering the system
time in a device and then using it like a reference clock
"Configuring SNTP").
After a cold start or a warm start, the device initializes its clock to January 1,
00:00h. Reset the time when you disconnect the device from the power
supply or restart it. Alternatively, you configure the device so that it
automatically obtains the current time from an SNTP server or from a PTP
clock.
Note: When setting the time in zones with summer and winter times, make
an adjustment for the local offset. The device can also get the SNTP server
IP address and the local offset from a DHCP server.
 Open the
With this dialog you can enter time-related settings independently of the
time synchronization protocol selected.

"System time (UTC)" displays the time determined using SNTP or
PTP.
The display is the same worldwide. Local time differences are not
taken into account.
Note: If the time source is PTP, consider that the PTP time uses the
TAI time scale. TAI time is 34 s ahead of UTC time (as of
01.01.2011).
If the UTC offset is configured correctly on the PTP reference clock,
the device corrects this difference automatically when displaying
"System time (UTC)".
 The "System Time" uses "System Time (UTC)", allowing for the local
time difference from "System Time (UTC)".
"System Time" = "System Time (UTC)" + "Local Offset".
100
Time:Basic Settings
7.1 Setting the time
(see on page 104
dialog.
UM BasicConfig L2E
Release 8.0 05/2013