Omron SYSMAC CJ1W-EIP21, Operation Manuals

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1 Introduction
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
1
-4
In
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tion
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icatio
ns Ser
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1
-4-4
A
u
tomatic Cloc
k Adjustment
With the EtherNet/IP Unit, clock information is read from the SNTP server at the specified times or
when the Clock Information Adjustment Switch is changed to TRUE. The internal clock time in the CPU
Unit is updated with the read time.
Precautions for Correct Use Precautions for Correct Use
An SNTP server is required to use automatic clock adjustment.
You can directly specify IP addresses, but you can also use the host names instead of the IP addresses
for SNTP servers, SNMP managers, or the destinations of CIP communications instructions (DNS cli-
ent).
Example: Setting Host Names on the DNS Server
Precautions for Correct Use Precautions for Correct Use
A DNS server is required to use the server host names for the DNS client.
1-4-4 Automatic Clock Adjustment
1-4-5 Specifying Host Names
NJ-series
Controller
SNTP server
Ethernet
EtherNet/IP Unit
Clock information
SNTP command
NJ-series
Controller
DNS server
Ethernet
EtherNet/IP Unit
Host name
IP address