Omron Sysmac NX1P2-10 1 Series, User Manual

Page: 153 / 578

4-3-2
Using a Private Address for the Built-in EtherNet/IP Port
Firewall
Ethernet (EtherNet/IP)
Controller Controller
Ethernet (EtherNet/IP)
Controller
Private address
Personal computer
(e.g., Sysmac Studio)
Private address Private address
Private address
Global address
IP router
Cannot connect to Internet
Cannot connect to Internet
Global address
Private address
Private address
IP router
Firewall
Personal computer
(e.g., Sysmac Studio)
(required)
Intranet
Internet
Intranet

Conditions for Communications Applications
If the built-in EtherNet/IP port uses a private address, you can use explicit message communica-
tions service under the following conditions.
• The explicit message communications service can be executed on the intranet between built-in
EtherNet/IP ports with private addresses only.
• A device such as a personal computer (CIP applications including the Network Configurator)
cannot connect online and communicate over the Internet with a built-in EtherNet/IP port that has
a private address.
Explicit message communications are also not possible over the Internet between built-in Ether-
Net/IP ports with private addresses.
Precautions for Correct Use
• Network Security and Firewalls
To set up an intranet through a global address involves network security considerations. Be
sure to consult with a network specialist in advance and consider installation of 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
4-13
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
4-3
Private and Global Addresses
4
4-3-2
Using a Private Address for the Built-in EtherNet/IP Port