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Expanded System Configuration Section 2-5
Ethernet If an Ethernet Unit is connected to the system, FINS messages can be used
to communicate between the Host computer connected to the Ethernet and
the PLC, or between PLCs. By executing FTP commands for the PLC from
the Host computer connected to the Ethernet, the contents of the files on the
Memory Card installed in the CPU Unit can be read or written (transferred).
Data can be sent and received using UDP and TCP protocols. These func-
tions enable a greater compatibility with information networks.
Controller Link The Controller Link Network is the basic framework of the OMRON PLC FA
Network. Connecting a Controller Link Unit to the network enables data links
between PLCs, so that data can be shared without programming, and FINS
message communications between PLCs, which enable separate control and
data transfer when required. The Controller Link Network connections use
either twisted-pair cables or optical fiber cables. Data links and message com-
munications are also possible between the PLC and personal computer. Data
links enable large-capacity and free allocations. FINS message communica-
tions also allow large-capacity data transfer.
FINS FINS
Host computer
FTP command
Ethernet Unit
Ethernet Unit
Ethernet
Controller Link Unit Controller Link Unit
Messages
Controller Link
Data link
Free
allocation
Control-
ler Link
Support
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