Omron CS1W-ETN21 - Manual (Page 47)

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Overview of Communications Functions Section 1-5
1-5-6 Automatic Clock Adjustment Function
The Ethernet Unit can acquire clock information from the SNTP server at a
particular time or when a dedicated bit turns ON, and it can refresh the inter-
nal clock information of the CPU Unit to which it is mounted.
Note (1) An SNTP server is required to use this function.
(2) SNTP server settings require specialized knowledge, so they should al-
ways be handled by the network administrator.
(3) Be sure that you have a clear understanding of the mail system before us-
ing.
(4) When using the Internet, depending on the condition of the network it
may not be possible to acquire the clock information.
1-5-7 Specifying Servers by Host Name
POP servers, SMTP servers, and SNTP servers can be specified by host
name rather than by IP address by using of the DNS client function.
Note A DNS server is required to specify servers by host name.
Ethernet
Ethernet Unit
SNTP server
Clock information
CS/CJ-series
CPU Unit
Ethernet
Ethernet Unit
DNS server
Host name
IP address
CS/CJ-series
CPU Unit