Synchronizing the System Time in the
Network
Basic Configuration
Release
6.0
07/2010
7.2
SNTP
101
7.2.2 Preparing the SNTP Configuration
To get an overview of how the time is passed on, draw a network plan with
all the devices participating in SNTP. When planning, bear in mind that
the accuracy of the time depends on the signal runtime.
Figure 26: Example of SNTP cascade
Enable the SNTP function on all devices whose time you want to set using
SNTP.
The SNTP server of the device responds to Unicast requests as soon as
it is enabled.
If no reference clock is available, specify a device as the reference clock
and set its system time as accurately as possible.
Note: For the most accurate system time distribution possible, only use
network components (routers, switches, hubs) which support SNTP in the
signal path between the SNTP server and the SNTP client.
GPS
NTP
Server
ServerClient
Client
Client
Switch
PLC
ServerClient
Switch
ServerClient
Switch
192.168.1.1 192.168.1.2 192.168.1.3
192.168.1.0
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