Using A Private Address For The Ethernet Unit - Omron CS Series Operation Manual

Private and Global Addresses
5-3-2

Using a Private Address for the Ethernet Unit

Sending mail
Receiving mail
Intranet
IP router
Firewall
Conditions for Using
Communications
Applications
1,2,3...
110
Intranet
Firewall
IP router
Internet
E-mail can be sent and received
through the Internet.
Communications in Intranet
Ethernet
PLC
Communications
in Intranet
Ethernet Unit: Private address
When the Ethernet Unit has a private address, communications applications
can be used under the following conditions:
1. FINS Communications Service
• FINS communications service is enabled only between Ethernet Units
with private addresses on the intranet.
A device such as a personal computer (with a FINS application including
a CX-Programmer) cannot connect online and communicate over the
Internet with an Ethernet Unit that has a private address. FINS communi-
cations over the Internet are also not possible between Ethernet Units
with private addresses.
• Either FINS/TCP or FINS/UDP can be used for the FINS communications
service.
• With FINS/UDP, all of the Ethernet Unit IP address conversion methods
can be used.
CX-Programmer, etc.
FINS/TCP client computer
Ethernet
Communications in intranet
PLC
Ethernet Unit: Private address
CX-Programmer, etc.
FINS/TCP client computer
PLC
Ethernet Unit: Private address
Section 5-3
FINS communications
FTP
Socket
FINS communications
FTP
Socket