Omron CJ1W-EIP21 User Manual

1-19
1 Introduction
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
1-4 Introduction to
Communications Services
1
1-4-4 Automatic Clock 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 UsePrecautions 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 UsePrecautions 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

Omron CJ1W-EIP21 Specifications

General

Brand	Omron
Model	CJ1W-EIP21
Category	Controller
Language	English