Omron Sysmac NJ-series User Manual

4-15
4 Determining IP Addresses
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
4-3 Private and Global Addresses
4
4-3-3 Using a Global Address for the Built-in EtherNet/IP Port
 Conditions for Communications Applications
You can use the explicit message communications service over the Internet under the following con-
ditions.
• A device such as a personal computer (a CIP application including the Network Configurator) can
connect online and communicate over the Internet with a built-in EtherNet/IP port that has a global
address.
• The TCP port number (44818) or UDP port number (44818) that is used for EtherNet/IP cannot be
used because it is prohibited by a firewall in the communications path.
Precautions for Correct UsePrecautions for Correct Use
Network Security and Firewalls
To set a global IP address for a built-in EtherNet/IP port involves network security consider-
ations. It is recommended that the user contract with a communications company for a dedicated
line, rather than for a general line such as a broadband line. Also, be sure to consult with a net-
work specialist and consider security measures such as a firewall. After a firewall has been set
up by a communications technician, there may be some applications that cannot be used. Be
sure to check first with the communications technician.
4-3-3 Using a Global Address for the Built-in EtherNet/IP Port
Communications
over Internet
Firewall
Ethernet (EtherNet/IP)
Firewall
IP router
Communications
in intranet
Built-in EtherNet/IP port: Global address
Private address
Global address
Private address
Cannot connect to Internet
Cannot connect to Internet
Global address
Private address
IP router
CIP client on a computer,
such as Network
Configurator
Ethernet (EtherNet/IP)
Controller
(required)
Internet
Intranet
Intranet

Omron Sysmac NJ-series Specifications

General

Brand	Omron
Model	Sysmac NJ-series
Category	Computer Hardware
Language	English