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15 Ethernet
CP2E CPU Unit Software User’s Manual(W614)
15-6 Automatic Clock Adjustment and Specifying Servers by Host Name
15
15-6-4 PLC Setup for DNS and Automatic clock Adjustment
Item Contents Default
Obtain clock
data from SNTP
server
If this option is selected, the CPU Unit’s clock is set to the time at
the SNTP server’s clock.
Not checked
Auto Adjust-
ment
Set the time at which the SNTP server is to be accessed to syn-
chronize the clocks.
When the time that is set here arrives, the SNTP server is
accessed and the CPU Unit clock is adjusted to match the SNTP
server clock.
The clock data from SNTP server is UTC (Universal Time Coordi-
nated), so it needs to be adjusted to the local time.
0:0:0
Designation
Method
Select whether the SNTP server used for automatic clock adjust-
ment is to be specified by IP address or by host domain name (i.e.,
by host name).
IP Address
IP Address Set the IP address for the SNTP server that is to be used for auto-
matic clock adjustment.
This setting is enabled only when server specification by IP
address has been selected.
0.0.0.0
Host Name Set the host domain name (i.e., the host name) for the SNTP
server that is to be used for automatic clock adjustment.
This setting is enabled only when server specification by host
name has been selected.
None
Port No. Set the port number for connecting to the SNTP server that is to
be used for automatic clock adjustment.
This setting does not normally need to be changed.
0
(Number 123 is used.)
Retry Timer Retry within the setting time when a connection to the SNTP
server fails. An Ethernet server connection error will occur at the
end of the time.
0
(10 s)
Time Lag
Adjustment
This sets in the CPU Unit’s clock data the time difference made up
from the SNTP server’s clock data.
To use the clock data from the SNTP server just as it is, input 0.
+0:0
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