OMRON products are manufactured for use accordin g to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to ind icate and classify pr ecautions in this manual . Always heed
the information provided with them . Failure to heed precautions can result in in jur y to people or damage to property.
!DANGERIndicates an immine ntly hazardous situation whi ch, if not avoided, will result in death or
serious injury. Additionally , there may be severe property damage.
!WARNINGIndicates a potentially hazardous situatio n which, if not avoided, could resu lt in death or
serious injury. Additionally , there may be severe property damage.
!CautionIndicates a potentially ha zardous situation which, if not avoided, may result in minor or
moderate injury, or property damage.
OMRON Product References
All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to
an OMRON product, regardless of whether or not it appears in the proper name of the product.
The abbreviation “Ch,” which ap pears in some displays and on some OMRON produ cts, often means
“word” and is abbreviated “Wd” in documentation in this sense.
The abbreviation “PLC” means P rogrammable Controller. “PC” is used, however, in som e Programming Device displays to mean Programmable Controller.
Vi sual Aids
The following headings appear in the left co lumn of the manual to help you locate different types of
information.
OMRON, 1997
All rights reserved. No part of this publicatio n may b e repro d uced, sto red in a retrieval system, or transmitted, in any form, or
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without
notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsibility
for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained in
this publication.
Note Indicates information of pa rticular interest for efficient and convenient opera-
tion of the product.
1,2,3...
1. Indicates lists of one sort or another, such as procedures, checklists, etc.
v
Unit Versions of CS/CJ-series Controller Link Units
2
Unit Versions
A “unit version” has been introduced to manage CS/CJ-series Controller Link Units according to differences in functionality accompanying upgrades.
Unit Version Notation on Products
The unit version code is provided on the nameplate of the CS/CJ-series Controller Link Units for which
unit versions are being managed . This syste m applies to Controller Link Units wi th unit version 1. 2 or
later.
Example: CS1W-CLK21-V1
CS-series Controller Link Unit
Confirming Unit Versions with Support Software
CX-Programmer version 5.0 or higher can be used to confirm the unit version in the Unit Manufacturing
Information.
Nameplate
CS1W-CLK21-V1
CONTROLLER LINK UNIT
Lot No. 040901 0000 Ver.1.2
OMRON CorporationMADE IN JAPAN
Unit version 1.
1,2,3...1. 1. In the I/O Table Window, right-click on the Controller Link Unit, and then
select Unit Manufacturing Information.
2. The following Unit Manufacturing Information Dialog Box will be displayed.
Indicates the unit version.
Example: In this Uni t Manufacturing Information D ialog Box, unit version
1.2 is displayed. Use this dialog box to confirm the unit version of the Controller Link Unit that is connected online.
vi
Using the Unit Version Labels
Unit version labels are provided with the product. These labels can be attached to the front of previous
Controller Link Units to differentiate between Controller Link Units of different unit versions.
Unit Version Notation
The unit versions are indicated in this manual as follows:
Notation in product nameplateNotation in this manualRemarks
V e r.1.2 or later after the lot numb er CS/CJ-series Controller Link Units
Blank after the lot numberPre-Ver. 1.2 CS/CJ-series Control-
Function Support by Unit Version
FunctionsEarlier version (Pre-Ver. 1.2)Unit version 1.2
Maximum number of data link
words (data link area for sending/
receiving that is created for a single node in a single CPU Unit)
Data Link AreaThe same area cannot be allo-
Maximum number of Un its connected to a single CPU Unit
Information for which no particular
with unit version 1.2 or later
ler Link Units
CS1W-CLK21-V1
CJ1W-CLK21-V1
12,000 max.20,000 max.
cated for both Area 1 and Area 2.
4 Units8 Units
version is specified applies to all
unit versions .
CS1W-CLK21-V1
CJ1W-CLK21-V1
The same area can be allocated
for both Area 1 and Area 2.
Note Use the CX-Net in CX-Programmer version 5.0 or later to set a data link area
in which the number of se nd and receive words exceeds 12,000 words, or to
set data link tables that allocate the same area for Area 1 and Area 2.
Unit Versions and Manufacturing Dates/Lot Numbers
ModelUntil August 2004From September 2004
CS1W-CLK21-V1Pre-Ver. 1.2Unit version 1.2
CJ1W-CLK21-V1
This manual descr ibes the installation, setu p, and operation of the C200HW-CLK21, CS1W-CLK21V1, CJ1W-CLK21-V1, CVM1-CLK21, and CQM1 H-CLK21 Controller Link Units for C200HX/HG/HE,
CS/CJ-series, CVM1, CQM1H-series, and CV-series PLCs, and includes the sections described
below. The Controller Link Units are used to connect these PLCs to a Contr oller Link Network. Information is also provided in thi s manual on CS1W- RPT01/02/03 Repeater Units. The following three
manuals are directly related to application of the Controller Link Network.
NameContentsCat. No.
SYSMAC CS1W-CLK21, CJ1W-CLK21,
C200HW-CLK21, CVM1-CLK21.
CQM1H-CLK21 Controller Link Units
Operation Manual (this manual)
3G8F7-CLK12-E-V1/CLK52-E-V1/
CLK21-E-V1 Controller Link Support
Boards for PCI Bus
Operation Manual
3G8F7-CLK12-E/CLK52-E/CLK21-E Controller Link Support Boards for PCI Bus
Installation Guide
3G8F5-CLK11-E, 3G8F5-CLK21-E Controller Link Support Boards for ISA Bus
Operation Manual
CS1W-CLK12, CVM1-CLK12 Optical
Ring Controller Link Units
Operation Manual
C200HW-ZW3AT2-E-V2 Controller Link
Support Software
Operation Manual
Installation, setup, and operating procedures for the Controller Link Units. Controller Link Units are used to connect
PLCs to a Controller Link Network.
Operating procedures for Controller Link Support Boards
for PCI bus connections. Controller Link Support Boards
are used to connect IBM PC/ATs or compatibles to a Controller Link Network.
Installation and setup procedures for Controller Link Support Boards for PCI bus connections. Controller Link Support Boards are used to connect IBM PC/ATs or
compatibles to a Controller Link Network.
Installation, setup, and operating procedures for Contr oller
Link Support Boards for ISA bus connections. Controller
Link Support Boards are used to connect IBM PC/ATs or
compatibles to a Controller Link Network.
Installation, setup, and operating procedures for the Optical
Ring Controller Link Units. Controller Link Units are used to
connect C200HX/HG/HE CV-series, and CS-series PLCs
to a Controller Link Network.
Installation and operating procedures for the Controller
Link Support Software. The Controller Link Support Software enables manually set data links and other procedures
for a Controller Link Network.
(suffixes omitted)
W309
W383
W388
W307
W370
W369
Depending on the system, you may also need the CX -Pr ogrammer, or a Programming Console. Refer
to the body of this ma nual for details. Please read t his manual and rel ated manuals carefu lly and be
sure you understand the information provided before attempting to install and operate a Controller Link
Unit.
Precautions provides general precautions for using the Controller Link Unit and related devices.
Section 1 provides basic information on Controller Link Networks, and will give the reader an overview
of what Controller Link Networks can do and how best to use them.
Section 2 describes the basic procedures to use the Controller Link Unit. The settings necessary for
using each of the functions are also explained briefly. Fo r more details, refer to the following sections
on individual functions.
Section 3 describes how to inst all a Co ntrolle r Link Un it and h ow to wire th e Contr oller Li nk Networ k.
Details are also provided on installation, wiring, and basic ope rating procedures of Repeater Units,
including information on using them to construct networks.
Section 4 describes the settings required for starting communications. These basic settings are
required for both data links function and the message ser vice. Carr y out the s ettings descri bed here
before turning on power to the Controller Link Unit.
Section 5 describes how to use data l inks in a Controller Link Networ k. Refer to SECTION 2 Basic
Procedures for an outline of data link application.
Section 6 explains how to use the message service provided by a Controller Link Unit. It also explains
the FINS commands and responses supported by Controller Link Units and those supported by
C200HX/HG/HE, CVM1, and CV-series PLCs.
xiii
Section 7 describes the method used to connect multiple networks through CS/CJ-series, CVM1, and
CV-ser ies PLCs. The sec tion also descri bes remote programmi ng and monitorin g with Programming
Devices.
Section 8 explains details on Controller Link Network communicati ons. Refer to this section for network communications that require accurate communications timing.
Section 9 provides information on tr oubleshoot ing er rors tha t occu r dur ing Cont roller Link Un it operation, as well as daily inspection, cleaning, and other maintenance procedures.
Section 10 provides information on functions that can be performed without tur ning OFF the PLC
power to the existing network, such as adding node s to the Contro ller Link Net work using a Repeater
Unit and changing data link tables while the data links are active.
Appendix A provides a list of standard O MRON products rel ated to Controller Link Networks.
Appendix B provides easy reference to the words i n P LC mem ory areas used by Controller Link Net-
works.
Appendix C provides information on how to use th e CJ1W-TB101 Wired Controller Link Unit Relay
Terminal Block, including details on connection and replacement.
!WARNINGFailure to read and unders tand the in formation pr ovided in th is manual may
result in per sonal injur y or d eath, damage to the product, or p roduct failure.
Please read each section in its entirety and be sure you understand the information provided in the s ection a nd rel ated s ectio ns before attempti ng any of
the procedures or operations given.
xiv
Read and Understand this Manual
Please read and understand this manual before using the product. Please consult your OMRON
representative if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NONINFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which
liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
xv
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses
listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or
uses not described in this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.
xvi
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other
reasons.
It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be changed
without any notice. When in doubt, special model numbers may be assigned to fix or establish key
specifications for your application on your request. Please consult with your OMRON representative at any
time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.
PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and does
not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and
Limitations of Liability.
ERRORS AND OMISSIONS
The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.
xvii
xviii
PRECAUTIONS
This section provides general precautions for using the Controller Link Unit and related devices.
The information contained in this section is important for the safe and reliable application of the Controller Link
Unit. You must read this section and understand the information contained before attempting to set up or op erate
a Controll er Link Un it.
This manual is intended for the following personnel, who must also have
knowledge of electrical systems (an electrical engineer or the equivalent).
• Personnel in charge of installing FA systems.
• Personnel in charge of designing FA systems.
• Personnel in charge of managing FA systems and facilities.
2General Precautions
The user must operate t he product according to t he performance specifications described in the operation manuals.
Before using the product under conditions which are not described in the
manual or applying the produ ct to nuclear control s ystems, railroad systems,
aviation systems, vehicles, combustion systems, me dical equipmen t, amusement machines, safety equipment, and oth er systems, machines, and equi pment that may have a serious influence on lives and property if used
improperly, consult your OMRON representative.
Make sure that the ratings and performan ce charact er is ti cs of the pr od uc t are
sufficient for the systems, machi nes, and equipment, and be sure to provide
the systems, machines, and equipment with double safety mechanisms.
This manual provides information for programming and operating OMRON
PLCs and related devices. Be sure to read this manual before attempting to
use the software and keep this manual close at hand for reference during
operation.
!WARNING It is extremely impor tant that a PLC and al l PLC Units b e used for the spec i-
fied purpose and under the specified conditions, especially in applications that
can directly or indirectly affect human life. You must consult with your OMRON
representative before applying a PLC System to the ab ove mentioned applications.
3Safety Precautions
!WARNING Do not attempt to take any Unit apart while the power is being supplied. Doing
so may result in electric shock.
!WARNING Do not touch any of the te r minals o r ter minal blocks while the power is bein g
supplied. Doing so may result in electric shock.
!WARNING Provide safety measures in external circuits (i.e., not in the Programmable
Controller), includin g the following items, to ensure safety in the system if an
abnormality occurs due to malfunc tion of the PLC or anoth er external factor
affecting the PLC operation. Not doing so may result in serious accidents.
• Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnorm al signals caused by broken signal
lines, momentary power interruptions, or other causes.
• Emergency sto p cir cuits, inter lock circui ts, limit circu its, and sim ilar safety
measures must be provided in external control circuits.
xx
Operating Environment Precautions4
• The PLC will turn OFF all outputs when its self-diagnosis function detects
any error or when a severe failure alarm (FALS) instruction is executed.
As a counterme asure for such errors, external safety measures must be
provided to ensure safety in the system.
• The PLC outputs m ay remain ON or OFF due to depos ition or bur ning of
the output relays or destr uction of the output transistors. As a cou ntermeasure for such problems, extern al safety measures must be provide d
to ensure safety in the system.
• When the 24-VDC output (service power supply to the PLC) is overloaded
or short- circuited, the voltage may drop and result in the outputs b eing
turned OFF. As a countermeasure for such problems, external safety
measures must be provided to ensure safety in the system.
!Caution Execute online edit only after confirming that no adverse effects will be
caused by extending the cycle time. Other wise, the input signals may not be
readable.
!Caution Confirm safety at the destination node before transferring a program to
another node or changing c ontents of the I/O memory ar ea. Doing either of
these without confirming safety may result in injury.
4Operating Environment Precautions
!Caution Do not operate the control system in the following locations:
• Locations subject to direct sunlight.
• Locations subject to temperatures or humidity outside the range specified
in the specifications.
• Locations subject to condensation as the result of severe changes in temperature.
• Locations subject to corrosive or flammable gases.
• Locations subject to dust (especially iron dust) or salts.
• Locations subject to exposure to water, oil, or chemicals.
• Locations subject to shock or vibration.
!Caution Take appropriate and su fficient counterm easures when installing sys tems in
the following locations:
• Locations subject to static electricity or other forms of noise.
• Locations subject to strong electromagnetic fields.
• Locations subject to possible exposure to radioactivity.
• Locations close to power supplies.
!Caution The operating environment of the P LC Syste m can h ave a large effect on the
longevity and reliability of the sy stem. Improper operating environme nts can
lead to malfunction, failure, and other unforeseeable problems with the PLC
System. Be sure that the op erating environment is within the sp ecified cond itions at installation and remai ns within the specifi ed conditions dur ing the life
of the system.
xxi
Applications Precautions5
5Applications Precautions
Observe the following precautions when using the Controller Link Unit.
!WARNING Failure to abide by the following precautions c ould lead to ser ious or pos sibly
fatal injury. Always heed these precautions.
• Always ground the system to 100
protect against electrical shock.
• Always turn OFF the power supply or the backup power supply to the PLC
or the computer before attemptin g any of the following. Performing any of
the following with the power supply turned ON may lead to electrical
shock:
• Installing or removing the Controller Link Unit.
• Assembling the Units.
• Setting DIP or rotary switches.
• Connecting or disconnecting any cables or wiring.
• Connecting or disconnecting any terminal block.
!Caution Failure to abide by the fol lowing precautions could le ad to faulty operation or
the PLC or the system or could damage the PLC or PLC Units. Always heed
these precautions.
• Always use the power supply voltages specified in the operation manuals.
An incorrect voltage may result in malfunction or burning.
• Take appropr iate measures to ensure that the spec ified power with the
rated voltage and frequency is supplied. Be partic ularly car eful in places
where the power supply is unstable. An incorrect power supply may result
in malfunction.
• Install external breakers and take other safety measures against short-circuiting in external wiring. Insufficient safety measures agai nst short-circuiting may result in burning.
• Separate the line ground termi nal (LG) from the functional ground te rminal (GR) on the Power Supply Unit before performing withstand voltage
tests or insulation resistance tests. Not doing so may result in burning.
• Do not attempt to disassemble, repair, or modify any Units. Any attempt to
do so may result in malfunction, fire, or electric shock.
• Install the Uni ts prope rly as s pecified in the op eration manuals. Imp roper
installation of the Units may result in malfunction.
• Be sure that al l the mou nti ng s c rews, ter m ina l s crews, and c able co nne ctor screws are tightene d to the torque s pecified in the r elevant manuals.
Incorrect tightening torque may result in malfunction.
• Leave the label attached to the Unit when wiring. Removing the label may
result in malfunction if foreign matter enters the U nit .
• Remove the label after the completion of wiring to ensure proper heat dissipation. Leaving the label attached may result in malfunction.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Connection of bare stranded wires may result in
burning.
Ω or less when installi ng the system to
xxii
Applications Precautions5
• Double-check all wir ing and switch settings before turning ON th e power
supply. Inco rre ct wir ing may result in bur ni ng.
• Wire all connections correctly.
• Mount Units only after checking terminal blocks completely.
• Be sure that the Bus Connection Units and other items with locking
devices are properly locked into place. Improper locking may result in
malfunction.
• Use special packing box when tran sporting the Contr oller Link Uni t. Handle the product carefully so that no excessive vibration or impact is
applied to the product during transportation.
• Check the user program for proper execution before actually r unn ing it o n
the Unit. Not checking the program may result in an unexpected operation.
• Confirm th at no adverse effect will occur in the system before attemp ting
any of the following. Not doing so may result in an unexpected operation.
• Changing the operating mode of the PLC. (including the setting of the
startup operating mode)
• Force-setting/force-resetting any bit in memory.
• Changing the present value of any word or any set value in memory.
• Inappropriate settings in data link tables or routing tables can cause unexpected system operation. Always check table settings before starting
operation, and always test the settings in tr ial op eration be fore star tin g or
stopping the data links in actual operation.
• CPU Bus Units will be automatically restarted when routing tables are
transferred from a Programming Device to the CPU Unit. Resetting is
required to use the new tables. Confirm that restarting the CPU Bus Units
will not adversely affect system operation before transferring routing
tables.
• Observe the following precautions when wiring the communications
cables.
• Separate the cables from the power lines or high-tension lines.
• Do not bend the cables.
• Do not pull on the cables.
• Do not place heavy objects on top of the cables.
• Route cables inside conduits.
• Before touching the Un it, be su re to fir s t to uch a grounded metallic objec t
in order to discharge any static build-up.
xxiii
Conformance to EC Directives6
6Conformance to EC Directives
The Controller L ink Units conform t o EMC and Low Voltage Directives as follows:
EMC Directives
OMRON devices that comply with EC Directives also conform to the r elated
EMC standards so tha t they can be more eas il y built i nto ot her d evices or th e
overall machine. The actual products have been checked for conformity to
EMC standards (see the following note). Whether the products conform to the
standards in the s ystem used by the custo mer, however, must be che cked by
the customer.
EMC-related perfor ma nce o f th e O M RON devices that c omp ly wi th EC Di re ctives will vary depending on the configuration, wi ring, an d other conditio ns of
the equipment or control panel on which the OMRON devices are installed .
The customer must, therefore, perform the fi nal c heck to confir m th at devices
and the overall machine conform to EMC standards.
Always ensure that devices operating at voltages of 50 to 1,000 VAC and 75
to 1,500 VDC meet the required safety standards for the PLC (EN61131-2).
The Controller Link Units that comply with EC Directives (CVM1-CLK21,
C200HW-CLK21, CS1W-CLK21(-V1), CJ1W-CLK21(-V1), and CQM1HCLK21) must be installed as follows:
1. The Controller Link Units are desig ned for ins tallation inside control panels. All Controller Link Units must be installed within control panels.
2. Use reinforced insu lation or double insulati on for the DC power supplies
used for the communications power supply and I/O power supplies.
3. The Controller Link Units that compl y with EC Direc tives also c onform to
the Common Emission Standard (EN61000-6-4). Radiated emission characteristics (10-m r eg ula tio ns ) may v ar y depending on the con f ig urati on o f
the control panel used, o ther d evices conne cted to the c ontrol panel , wiring, and other cond iti ons . You must therefore confirm t hat the overall machine or equipment complies with EC Directives.
xxiv
SECTION 1
Features and System Configuration
This section provides basic information on Controller Link Networks, and will give the reader an overview of what
Controller Link Networks can do and how best to use them.
The Controller Link is a n FA network that can se nd and receive large data
packets flexibly and easily among the OMRON C 200HX/H G/HE Programmable Controllers (PLCs), CS-series PLCs, CJ-ser ies PLCs, CVM1 PLCs, CVseries PLCs, CQM1H-series PLCs, and IBM PC/AT or compatible computers.
The Controller Link suppo rts data links that enable data shar ing and a message 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: networ ks connected with shielded twist edpair cable and networks con nected with optical fiber c able. Using a Repeater
Unit in networks co nnected with t wisted-pair cable makes it possible to use a
variety of different wiring configurations, such as T-branch wiring, long-distance 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)
CS1W-CLK21-V1
Controller Link Unit
CS-series
PLC
C
P
U
CJ-series PLC
CS-series, CJ-series, C200HX/HG/HE, CVM1, CV -series, and CQM1H-series
PLCs
CJ1W-CLK21-V1
Controller Link Unit
C
P
U
Controller Link
C200HW-CLK21
Controller Link Unit
C200HX/HG/HE
PLC
Data link
Message service
RAS functionsStatus area function
CVM1-CLK21
Controller Link Unit
CVM1, CV-series
PLC
C
P
U
Twisted-pair cable
CQM1H-series
PLC
C
P
U
Manual settings
Automatic settings
SEND/RECV instructions
CMND instruction
Error log function
Polling node backup
CQM1H-CLK21
Controller Link Unit
C
P
U
IBM PC/AT or
compatible
3G8F7-CLK21-E-V1
Controller Link
ort Board
Su
2
OverviewSection 1-1
Connecting Repeater Units Using Twisted-pair Cable (Wired Units)
T-Branch Wiring
Wired Controller Link UnitWired Controller Link Unit
CS1W-RPT01
Repeater Units
Twisted-pair cable
Twisted-pair cable
Long-distance Wiring
Wired Controller Link Unit
Twisted-pair cable
500 m max.
(See note.)
CS1W-RPT01
Repeater Units
Twisted-pair
cable
500 m max.
(See note.)
Wired Controller Link Unit
Twisted-pair cable
500 m max. (See note.)
Note: At 2 Mbit/s
Converting Part of the Transmission Line to Optical Fiber
Wired Controller Link UnitWired Controller Link Unit
CS1W-RPT02 or
CS1W-RPT03
Repeater Units
Twisted-pair cableTwisted-pair cable
Optical cable (H-PCF or GI)
Two Repeater Units of the sam e model must be used whe n par t of the tran smission line uses optical fiber.
3
OverviewSection 1-1
Maximum 62-node Configuration
Wired Controller Link Unit
Note1. The networ k wil l n ot o perate c or rectl y unl es s all no des wi thi n the ne twor k
Connecting Repeater
Units Using H-PCF Optical
Fiber Cable
Twisted-pair cable
31 nodes max.
CS1W-RPT01
Repeater Unit
Wired Controller Link Unit
Twisted-pair cable
31 nodes max.
The following Controller Link Units/S uppo rt Boards must b e us ed t o co ns truct
a network with more than 32 nodes:
CS1W-CLK21-V1
CJ1W-CLK21-V1
3G8F7-CLK21-V1
use the above Units/Boards.
2. Only node addresses 1 through 32 can be used on networks for which 62
nodes have not been enabled.
CS-series and CVM1/CV-series PLCs only.
Token Ring Mode
Backup
power supply
(24 V DC)
CS1W-CLK12-V1
Controller Link Unit
(token ring mode)
C
P
U
H-PCF Optical fiber cable
(ring connection)
C
P
U
CS1W-CLK12-V1
Controller Link Unit
(token ring mode)
CVM1-CLK12
Controller Link Unit
(token ring mode)
CVM1/CV-series PLCCS-series PLC
CVM1/CV-series PLCCS-series PLC
CVM1-CLK12
Controller Link Unit
(token ring mode)
Personal computer
C
P
U
C
P
U
3G8F7-CLK12-V1
Controller Link Support Board
for PCI Bus (token ring mode)
4
OverviewSection 1-1
Toke n Bus Mode
Personal
CS1W-CLK12-V1
Controller Link Unit
(token bus mode)
CS1W-CLK11
Controller Link Unit
CS-series PLCCS-series PLC
C
P
U
CVM1/CV-series
PLC
C
P
U
CVM1-CLK12
Controller Link Unit
(token bus mode)
C
P
U
computer
PC/AT or
compatible
Personal computer
Backup
power supply
(24 V DC)
Connecting Repeater
Units Using GI Optical
Fiber Cable
CS1W-CLK52-V1
Controller Link Unit
(token ring mode)
CS-series PLCCVM1/CV-series PLC
C
C
P
P
U
U
GI Optical fiber cable
(ring connection)
C
P
U
CS-series PLCCVM1/CV-series PLC
CVM1-CLK52
Controller Link Unit
(token ring mode)
3G8F5-CLK11
Controller Link
Support Board for
ISA Bus
Personal computer
C
C
P
P
U
U
3G8F7-CLK52-V1
C
P
U
Controller Link
Support Board
for PCI Bus
(token ring mode)
3G8F7-CLK12-V1
Controller Link
Support Board
for PCI Bus
(token bus mode)
CS1W-CLK52-V1
Controller Link Unit
(token ring mode)
Toke n Bus Mode
CS1W-CLK52-V1
Controller Link Unit
(token bus mode)
CS-series PLCCS-series PLC
C
P
U
Backup
power supply
(24 V DC)
CS1W-CLK52-V1
Controller Link Unit
(token bus mode)
CVM1-CLK52
Controller Link Unit
(token ring mode)
CVM1-CLK52-V1
Controller Link Unit
(token bus mode)
CVM1/CV-series
PLC
C
P
U
GI Optical fiber cable
(daisy chain
connection)
Personal computer
C
P
U
3G8F7-CLK52-V1
Controller Link
Support Board
for PCI Bus
(token bus mode)
5
OverviewSection 1-1
ge (
g)
Data Links
Data links allow the constant sharing of data in predetermined data areas
between nodes, between PLCs, or between a PLC and an IBM PC/AT or compatible computer on the network. Dat a lin ks do not requ ir e the use of communications programs on the PLC (CPU Unit) or IBM PC/AT or compatible
computer. Data written in the send area of the local node will be automatically
sent to the receive area of other nodes.
The I/O area (CIO area), link area (LR area), DM Area area (DM area), an d
extended DM Area area (EM area) c an be freely set in the send or rece ive
area. (The area used for sending or receiving data using the data link function
is called “data link area.”)
The data link area can be set automatically or manually.
Controller Link Unit
PLC
Constant data exchan
PLC
PLC
sharin
Automatic SettingUsed for simple data link processing. Data link can be performed by simply
setting parameters in the DM area of the PLC.
Send data size per n ode is the sa me for all nodes. All no des par ticipating i n
the data link share the same data.
Manual SettingUsed for flexible data link processing depending on each system.
Using the Controll er L ink Su pport Software, indivi dual data link tables can be
set for each node and the data link area can be freely allocated for each node.
Send data size per node can be fre ely set. It is als o possible to set nod es for
only send or rece ive data. With the Controller Link Unit, the data link can be
set to receive only a part of the data link area of other nodes.
Message Service
This function controls data transmission with particular nodes, reading or writing of status data, c hangi ng of op eration mod es, etc., by executing communications instruc tions on a program. The communications instr uctions include
SEND/RECV instructions for data transmission and CMND instructions for
issuing various commands.
PLC
Controller Link Unit
PLC
PLC
Data transmission (under certain conditions)
as required
Communications instruction
User program
6
OverviewSection 1-1
k
SEND/RECVThe SEND or RECV instruction sends or receives data in an area of a particu-
lar node.
The SEND instruction sends data from an area of the local node and writes to
an area in the designated node.
The RECV instructio n requests the designated node to send ar ea data and
writes the data to the local node.
CMNDThe CMND instruction issues a command to read or write data of other nodes,
control, or read erro r logs. With t he Control ler LInk Unit, O MRON’s command
protocol called “FINS commands” is used.
Note Since the C200HX/HG/HE PLCs do not s upport the CMND instr ucti ons, arbi-
trary commands cannot be issued.
RAS
RAS performs real-time monitoring of the network status. If an er ro r oc cu rs i n
the network, RAS records and displays the time and contents of the error.
Status AreaData Link Status Area
When the data link function is used, the data link status is reflected in the data
link status area of the PLC.
Network Status Area Other than the Data Link:
The network sta tus such as the sta te of node par ticipati on is reflect ed in the
status area of the PLC.
Controller Link Unit
CPU Unit
Controller Link Unit
CPU Unit
Status Area
• Data link status
• Status other than the data lin
Error LogThe error log function records co ntents (c odes ) and times of errors that occur
in the network into the RAM or EEPROM, up to the maximum of 39 errors.
The recorded errors ca n be read using the Controll er Link Suppor t Software
or the message service function.
Controller Link UnitController Link UnitController Link UnitController Link Unit
CJ-series
CPU Unit
CS-series
CPU Unit
C200HX/HG/
HE CPU Unit
Error log table
CVM1, CVseries CPU
Unit
7
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