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Overview Section 1-1
1-1 Overview
1-1-1 What Is the Controller Link?
The Controller Link is an FA network that can send and receive large data
packets flexibly and easily among the OMRON C200HX/HG/HE Programma-
ble Controllers (PLCs), CS-series PLCs, CJ-series PLCs, CVM1 PLCs, CV-
series PLCs, CQM1H-series PLCs, and IBM PC/AT or compatible computers.
The Controller Link supports data links that enable data sharing and a mes-
sage service that enables sending and receiving data when required. Data
link areas can be freely set to create a flexible data link system and effectively
use data areas.
High-volume data transmissions are possible at high speed and so a wide
range of networks, from low-level systems to high, can be easily created.
There are two types of networks: networks connected with shielded twisted-
pair cable and networks connected with optical fiber cable. Using a Repeater
Unit in networks connected with twisted-pair cable makes it possible to use a
variety of different wiring configurations, such as T-branch wiring, long-dis-
tance wiring, and partial conversion to optical fiber. (Refer to the CS1W-
CLK12, CVM1-CLK12 Optical Ring Controller Link Units Operation Manual
(W370) for detail on optical fiber connections.)
The functions of a Controller Link Network are illustrated below.
Wired System
(Twisted-pair Cable)
CS-series, CJ-series, C200HX/HG/HE, CVM1, CV-series, and CQM1H-series
PLCs
Data link
Manual settings
Automatic settings
Message service
RAS functions Status area function
Error log function
Polling node backup
Controller Link
SEND/RECV instructions
CMND instruction
C
P
U
CJ1W-CLK21-V1
Controller Link Unit
CJ-series PLC
IBM PC/AT or
compatible
Twisted-pair cable
3G8F7-CLK21-E-V1
Controller Link
Su
pp
ort Board
C200HW-CLK21
Controller Link Unit
CVM1-CLK21
Controller Link Unit
C200HX/HG/HE
PLC
CVM1, CV-series
PLC
CQM1H-CLK21
Controller Link Unit
CQM1H-series
PLC
C
P
U
C
P
U
C
P
U
C
P
U
CS1W-CLK21-V1
Controller Link Unit
CS-series
PLC