Omron Sysmac NX1P2-10 1 Series, User Manual

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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

Conditions for Communications Applications
You can use the explicit message communications service over the Internet under the following
conditions.
• 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 Use
• Network Security and Firewalls
To set a global IP address for a built-in EtherNet/IP port involves network security considera-
tions. 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 is 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 Determining IP Addresses
4-14
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)