Private And Global Addresses; Using A Private Address For The Ethernet/Ip Unit - Omron SYSMAC CJ1W-EIP21 Operation Manual

Private and Global Addresses

5-3-2

Using a Private Address for the EtherNet/IP Unit

Intranet
IP router
Firewall
EtherNet/IP Unit: Private address
Conditions for Using
Communications
Applications
Intranet
Firewall
IP router
Internet
Communications in Intranet
Ethernet (EtherNet/IP)
PLC
Communications
in Intranet
When the EtherNet/IP Unit or built-in EtherNet/IP port has a private address,
communications applications can be used under the following conditions:
■
FINS Communications Service
• The FINS communications service can be executed on the intranet
between EtherNet/IP Units and built-in EtherNet/IP ports with private
addresses only.
A device such as a personal computer (with a FINS application, including
the CX-Programmer) cannot connect online and communicate over the
Internet with an EtherNet/IP Unit or built-in EtherNet/IP port that has a pri-
vate address. FINS communications are also not possible over the Inter-
net between EtherNet/IP Units and or built-in EtherNet/IP ports with
private addresses.
• Either FINS/TCP or FINS/UDP can be used for the FINS communications
service.
• With FINS/UDP, all of the EtherNet/IP Unit or built-in EtherNet/IP port IP
address conversion methods can be used.
FINS/TCP client computer
with CX-Programmer, etc.
or
CIP client computer with
Network Configurator, etc.
Ethernet (EtherNet/IP)
Communications in intranet
PLC
EtherNet/IP Unit: Private address
FINS/TCP client computer
with CX-Programmer, etc.
or
CIP client computer with
Network Configurator, etc.
PLC
EtherNet/IP Unit: Private address
Section 5-3
FINS communications,
Explicit messages
FINS communications,
Explicit messages
107