Omron NSJ CONTROLLERS - 03-2008 Operation Manual page 95

System Configuration
NSJ Controller Link Unit
NSJ Ethernet Unit
64
(2) The total length of I/O Connecting Cable between the NSJ Controller and
first Expansion Rack and between Expansion Racks must be 12 m or
less.
(3) Connect the I/O Interface Unit directly to the right of the Power Supply
Unit. Proper operation may not be possible if it is connected any other lo-
cation.
An NSJ Controller Link Unit (NSJW-CLK21-V1) can be mounted to enable
using data links between NSJ Controllers and between NSJ Controllers and
PLCs, so that data can be shared without programming, and FINS message
communications between NSJ Controllers and between NSJ Controllers and
PLCs, which enable separate control and data transfer when required. Data
links and message communications are also possible between NSJ Control-
lers and personal computers. Data links enable large-capacity and user-set
allocations. FINS message communications also allow large-capacity data
transfer.
NSJ Controller Controller Link Unit
Messages
Controller Link
Data links
The functionality of the NSJ Controller Link Unit (NSJW-CLK21-V1) is equiva-
lent to the functionality of the CJ-series Controller Link Unit (CJ1W-CLK21-
V1, unit version 1.2).
An NSJ Ethernet Unit (NSJW-ETN21) can be mounted to enable using FINS
message communications between NSJ Controllers, between NSJ Control-
lers and PLCs, and between NSJ Controllers and host computers. By execut-
ing FTP commands for the NSJ Controller from a host computer connected to
the Ethernet, the contents of the files on the Memory Card installed in the
Controller Section can be read or written (transferred). Data can be sent and
received using UDP and TCP protocols by sending/receiving data using
SEND and RECV instructions or by using a socket service with CMND
instructions. These functions enable a greater compatibility with information
networks.
Host computer
FTP command
FINS
NSJ Controller
The functionality of the NSJ Ethernet Unit (NSJW-ETN21) is equivalent to the
functionality of the CJ-series Ethernet Unit (CJ1W-ETN21, unit version 1.4).
Controller Link Unit
Ethernet
FINS
Ethernet Unit
Ethernet Unit
Section 3-2
Control-
ler Link
Support
Board
User-set
allocations