Optical Remote I/O System Manual Revised December 1999

Optical Remote I/O System Manual Revised December 1999
Optical Remote I/O
System Manual
Revised December 1999
No. 6182
OMRON Corporation
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.
1
No. 6182
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.
2
No. 6182
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.
3
iv
Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify precautions in this manual. Always heed
the information provided with them. Failure to heed precautions can result in injury to people or damage to property.
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
! WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
! Caution
Indicates a potentially hazardous 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 appears in some displays and on some OMRON products, often means
“word” and is abbreviated “Wd” in documentation in this sense.
The abbreviation “PC” means Programmable Controller and is not used as an abbreviation for anything else.
Visual Aids
The following headings appear in the left column of the manual to help you locate different types of
information.
Note Indicates information of particular interest for efficient and convenient operation
of the product.
1, 2, 3...
1. Indicates lists of one sort or another, such as procedures, checklists, etc.
 OMRON, 1990
All rights reserved. No part of this publication may be reproduced, stored 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.
v
vi
TABLE OF CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-2
Remote I/O Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optical Remote I/O Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2
System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
Basic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multilevel Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C20, P-type, and K-type Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C120 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C500 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C1000H and C2000H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C200H System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combined Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connection Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3
Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3-2
3-3
3-4
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Link Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Number and I/O Word Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Word Allocation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4
Unit Components and Switch Settings . . . . . . . . . . . . . . .
4-1
4-2
4-3
4-4
Remote I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Link Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optical I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5
System Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1
5-2
5-3
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optical Fiber Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6
I/O Response Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1
6-2
6-3
6-4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C500 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C1000H and C2000H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C200H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii
TABLE OF CONTENTS
SECTION 7
Error Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1
7-2
7-3
Self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SR and AR Area Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locating Transfer Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendices
A
B
C
D
Standard Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Wiring Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the C200H-RM001-PV1 with CS1-series PCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
viii
About this Manual:
Basic OMRON PC Systems can be expanded to include Optical Remote I/O Systems. These flexible,
distributed control systems which use optical fiber cable to provide rapid data transmission over long
distances, free from external noise.
This manual has been prepared to explain how to incorporate Optical Remote I/O Systems into C120,
C200H, C500, C1000H, and C2000H PC Systems. It provides the necessary information, such as
system configuration, settings, and I/O word allocation, for connecting Remote I/O Master Units, Remote I/O Slave Units, I/O Link Units, and/or Optical I/O Units.
Before attempting to install or operate an Optical Remote I/O System, be sure to thoroughly familiarize yourself with the information contained herein.
Section 1 introduces Optical Remote I/O Systems and describes their advantages and characteristics.
Section 2 describes the components that go together to construct an Optical Remote I/O System and
the factors required to design a System.
Section 3 describes the LR area used in data transfer between the PCs, the method used to allocate
it to the PCs, and the polling process used to actually transfer data.
Section 4 provides details on Optical Remote I/O Systems and the main Units used to build these
Systems. Parts of the Units, switch setting, and examples of switch settings are provided.
Section 5 provides details on Unit dimensions and optical fiber cable.
Section 6 offers details on response times.
Section 7 describes error indications and error processing. Both indicator lights and dedicated error–
related flags are provided.
Appendix A provides a list of the basic specifications and complete model numbers of products used
in Optical Remote I/O Systems.
Appendix B provides technical specifications.
! WARNING Failure to read and understand the information provided in this manual may result in
personal injury or death, damage to the product, or product failure. Please read each
section in its entirety and be sure you understand the information provided in the section
and related sections before attempting any of the procedures or operations given.
ix
PRECAUTIONS
This section provides general precautions for using the Optical Remote I/O System and related devices.
The information contained in this section is important for the safe and reliable application of the Optical Remote I/O
System. You must read this section and understand the information contained before attempting to set up or operate
the Optical Remote I/O System.
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xi
3
Safety Precautions
1
Intended Audience
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.
2
General Precautions
The user must operate the product according to the performance specifications
described in the relevant manuals.
Before using the product under conditions which are not described in the manual
or applying the product to nuclear control systems, railroad systems, aviation
systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems, machines, and equipment that
may have a serious influence on lives and property if used improperly, consult
your OMRON representative.
Make sure that the ratings and performance characteristics of the product are
sufficient for the systems, machines, and equipment, and be sure to provide the
systems, machines, and equipment with double safety mechanisms.
This manual provides information for programming and operating the System.
Be sure to read this manual before attempting to use the System and keep this
manual close at hand for reference during operation.
! WARNING It is extremely important that the Optical Remote I/O System be used for the
specified 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 the Optical Remote I/O System to the
above-mentioned applications.
3
Safety 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 terminals or terminal blocks while the power is being
supplied. Doing so may result in electric shock.
! Caution
Tighten the screws on the terminal block of the AC Power Supply Unit to the
torque specified in the operation manual. The loose screws may result in burning
or malfunction.
! Caution
Execute online edit only after confirming that no adverse effects will be caused
by extending the cycle time. Otherwise, the input signals may not be readable.
! WARNING Do not attempt to disassemble, repair, or modify any Units. Any attempt to do so
may result in malfunction, fire, or electric shock.
! WARNING Provide safety measures in external circuits (i.e., not in the Programmable
Controller), including the following items, in order to ensure safety in the system
if an abnormality occurs due to malfunction of the PC or another external factor
affecting the PC operation. Not doing so may result in serious accidents.
xii
5
Application Precautions
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
• The PC 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 countermeasure for such errors, external safety measures must be provided to ensure safety in the system.
• The PC outputs may remain ON or OFF due to deposition or burning of the
output relays or destruction of the output transistors. As a countermeasure for
such problems, external safety measures must be provided to ensure safety in
the system.
4
Operating 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 sufficient countermeasures when installing systems 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
5
The operating environment of the Optical Remote I/O System can have a large
effect on the longevity and reliability of the system. Improper operating environments can lead to malfunction, failure, and other unforeseeable problems with
the System. Be sure that the operating environment is within the specified conditions at installation and remains within the specified conditions during the life of
the System.
Application Precautions
Observe the following precautions when using the Optical Remote I/O System.
! WARNING Always heed these precautions. Failure to abide by the following precautions
could lead to serious or possibly fatal injury.
• Always ground the system to 100 Ω or less when installing the Units. Not connecting to a ground of 100 Ω or less may result in electric shock.
• Always turn OFF the power supply to the PC before attempting any of the following. Not turning OFF the power supply may result in malfunction or electric
shock.
• Mounting or dismounting I/O Units, CPU Units, Memory Units, or any other
Units.
xiii
5
Application Precautions
• Assembling the Units.
• Setting DIP switches or rotary switches.
• Connecting cables or wiring the system.
• Connecting or disconnecting the connectors.
! Caution
Failure to abide by the following precautions could lead to faulty operation of the
Optical Remote I/O System, or could damage the PC or PC Units. Always heed
these precautions.
• Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes.
• Always use the power supply voltages specified in this manual. An incorrect
voltage may result in malfunction or burning.
• Take appropriate measures to ensure that the specified power with the rated
voltage and frequency is supplied. Be particularly careful 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 against short-circuiting may
result in burning.
• Do not apply voltages to the Input Units in excess of the rated input voltage.
Excess voltages may result in burning.
• Do not apply voltages or connect loads to the Output Units in excess of the
maximum switching capacity. Excess voltage or loads may result in burning.
• Disconnect the functional ground terminal when performing withstand voltage
tests. Not disconnecting the functional ground terminal may result in burning.
• Be sure that all the mounting screws, terminal screws, and cable connector
screws are tightened to the torque specified in this manual. 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 Unit.
• Remove the label after the completion of wiring to ensure proper heat dissipation. Leaving the label attached may result in malfunction.
• Double-check all wiring and switch settings before turning ON the power supply. Incorrect wiring may result in burning.
• Mount Units only after checking terminal blocks and connectors completely.
• Be sure that the terminal blocks, Memory Units, expansion cables, and other
items with locking devices are properly locked into place. Improper locking
may result in malfunction.
• Check the user program for proper execution before actually running it on the
Unit. Not checking the program may result in an unexpected operation.
• Confirm that no adverse effect will occur in the system before attempting any of
the following. Not doing so may result in an unexpected operation.
• Changing the operating mode of the PC.
• Force-setting/force-resetting any bit in memory.
• Changing the present value of any word or any set value in memory.
• Resume operation only after transferring to the new CPU Unit the contents of
the DM Area, HR Area, and other data required for resuming operation. Not
doing so may result in an unexpected operation.
• Do not pull on the cables or bend the cables beyond their natural limit. Doing
either of these may break the cables.
• Do not place objects on top of the cables or other wiring lines. Doing so may
break the cables.
xiv
Application Precautions
5
• Use crimp terminals for wiring. Do not connect bare stranded wires directly to
terminals. Connection of bare stranded wires may result in burning.
• When replacing parts, be sure to confirm that the rating of a new part is correct.
Not doing so may result in malfunction or burning.
• Before touching a Unit, be sure to first touch a grounded metallic object in order
to discharge any static built-up. Not doing so may result in malfunction or damage.
xv
SECTION 1
Introduction
1-1
1-2
Remote I/O Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optical Remote I/O Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Section
Remote I/O Systems
1-1
1-1
Remote I/O Systems
Assembly lines are often extremely long, making it difficult if not impossible to
wire all I/O devices directly from CPU Racks or Expansion I/O Racks. A Remote
I/O System can be used to solve this problem. In a Remote I/O System, a Rack
can be located farther from the CPU Rack than is possible with Expansion I/O
Racks connected directly to the CPU Rack.
By locating a Rack farther from the CPU Rack, a Remote I/O System eliminates
the time and mess in wiring (or changing wiring) to many devices that are separated from the CPU Rack. Although all I/O points must ultimately be wired individually, the question is one of distance: Do you want to wire dozens of terminals
all the way across a factory complex or do you want to run a single cable for most
of the distance and then wire individual terminals locally?
The following diagram illustrates how a simple Remote I/O System would be set
up. Slave Racks, described below, are controlled by the CPU through the Master. The dotted circles show the devices that would be controlled through the
Units on each Rack.
Master
Slave
CPU Rack
Slave Rack
Processing
machine
Assembly line
Processing
machine
Sensor
Processing
machine
Processing
machine
Sensor
Sensor
Slave Rack
Slave
Wiring distance could also be reduced by placing an independent CPU Rack
near every location that required control, but in doing so, each PC would have to
be programmed independently and the activities of all the PC programs would
need to be coordinated, a very difficult job. Here too, a Remote I/O System simplifies the task by allowing a single CPU, and thus a single program, to integrate
control of the entire process. A Remote I/O System thus has these two advantages: Racks can be located a greater distance from the CPU Rack and coordinating control actions is simplified because all control is exerted by one program.
A third advantage of Remote I/O Systems is reduced noise interference. This is
the result of the single cable that replaces the otherwise numerous wires that
would be required all the way from the CPU and Expansion I/O Racks to the I/O
devices.
A Remote I/O System directly involves only one PC and the program in it.
Through it, a large number of I/O points can be controlled a greater distance from
2
Section
Remote I/O Systems
1-1
the PC. This is achieved by mounting a Remote I/O Master Unit to the CPU
Rack to control I/O points located possibly many kilometers away. Each Master
serves as a ‘switching point’ for controlling all of the I/O points accessed through
it. These I/O points are accessed through the Master, not controlled by it. All I/O
control comes from the program in the CPU.
More than one Master can be mounted to a single PC, with each Master forming
the starting point of a Remote I/O Subsystem, i.e., a Remote I/O Subsystem
includes one Master plus all of the Remote I/O Units controlled through it.
The Remote I/O Units that can be included in each Subsystem depend on the
specifications of the Master. Masters are available either with optical or wire
specifications. Optical Remote I/O Systems transfer data through optical fiber cables to enable the greatest transmission distance and the greatest resistance to electrical noise. Wired Remote I/O Systems use wire cables which
don’t offer as great a distance as Optical Subsystems, but do greatly reduce the
burden of wiring remote I/O and afford greater resistance to noise than independently wired I/O points. Both types of Master can be mounted to the same PC
to meet specific distance and noise-resistance requirements.
PC
Master
on Rack
PC
Optical and
Wired Masters
on Rack
Remotely Controlled I/O Devices
Label printer
Glue coater
Wired Subsystem
Auto welder
Polisher
Optical Subsystem
Conveyer
Packing machine
All Remote I/O Systems consist of at least one Remote I/O Master Unit connected in series to one or more Units accessed through it. One of these Units
that is common to most Remote I/O Systems is a Remote I/O Slave Unit.
A Master is mounted to the CPU Rack or an Expansion I/O Rack; a Slave is
mounted to a Backplane to form what is called a Slave Rack. To a Slave Rack is
mounted the same other Units as those mounted to the CPU or Expansion I/O
Rack, with only a few exceptions (e.g., Link Units other than Slaves cannot be
mounted to Slave Racks). The advantage of a Slave Rack is that it can be located a considerable distance from the CPU Rack with the only connection required being a cable running from the Master to the Slave. The actual distance a
Slave Rack can be removed from the Master, as well as the other Units used to
configure a Remote I/O System, depends on the type of Remote I/O System being used. Collectively, all of the Units connected in a Remote I/O System are referred to as Remote I/O Units.
This manual describes Optical Remote I/O Systems. Wired Remote I/O Units
are described in the Wired Remote I/O System Manual.
3
Section
Optical Remote I/O Systems
1-2
1-2
Optical Remote I/O Systems
Optical Remote I/O Systems are flexible, distributed control systems which can
be customized as necessary by adding or eliminating various Units. They are
easy to design and adjust and have a very short downtime even in the unlikely
event of system failure.
Optical Remote I/O Systems consist of one or more Remote I/O Master Units
together with one or more of the following Units: I/O Link Units, I/O Slave Unit,
and Optical I/O Units.
PC
I/O Units
Slave
I/O Link Unit
I/O bus
Master
PC
Optical I/O Unit
An I/O Link Unit mounted to a CPU Rack or an independent I/O Link Rack is
used to create an I/O Link between two CPUs. An I/O Link allows one CPU to
directly input and/or output one or two words of data from and to another CPU.
This enables coordination of CPU activities. Although this is an exception to the
basic ‘one-program’ concept of Remote I/O Systems, it can be very effective
when one part of an operation requires a separate program but also requires integration with another PC. With the smaller (e.g., P-type and K-type) PCs, I/O
Links are also the only way to connect to a Remote I/O System.
An I/O Link can also be set up as the only element of an Optical Remote I/O System, i.e., without any Optical I/O Units or Slave Racks. Such a System would be
a like a PC Link System on a very limited scale, but it would employ I/O bits in the
IR area and not the LR area.
An Optical I/O Unit is used when it is necessary to control only a few I/O points in
one location. It is not mounted to a Rack; rather, it is located by itself in series with
the rest of the Units in the System. In this respect, an Optical I/O Unit is the Optical System equivalent of a Remote Terminal. Unlike a Remote Terminal, however, an Optical I/O Unit has fixed I/O terminals, not replaceable relays. In appearance, it looks much like an I/O Unit or Special I/O Unit.
A Remote I/O Subsystem consists of a single Remote I/O Master Unit and all
Remote I/O Units controlled through it.
In this manual, the term “Remote I/O Subsystem” always refers to an Optical
System unless specifically designated as a Wired System. For convenience,
Remote I/O Master Units and Remote I/O Slave Units are referred to respectively as simply “Masters” and “Slaves”. These terms, as well, always refer to
Optical Units unless otherwise specified. The term “Slave Rack” is used to refer
to a Backplane with a Slave mounted to it. “PC” always means Programmable
Controller.
C500 Masters and C500 Slaves are used for the C500, C1000H, and C2000H.
C500 Masters and C500 Slaves can also be used for the C120, although a C120
Master and C120 Slave are available
Features of Optical
Remote I/O Systems
4
An Optical Remote I/O System provides a number of advantages, as indicated in
the following table.
Section
Optical Remote I/O Systems
1-2
Advantages of Optical Remote I/O Systems
Reduced wiring burden and easier wiring changes
Greater transmission distance from CPU Rack
Coordination of control facilitated by use of a single program
I/O Links enable direct transfer of data between PCs
Rapid data transmission
High responsiveness and fidelity
Free from the adverse effects of external noise
Optical fiber cable is used for communication lines. As a result, wiring is significantly simplified and the system can be easily expanded as necessary.
Either All-plastic Fiber (APF), Plastic-clad Fiber (PCF), or Quartz Crystal (AGF)
can be used for the optical fiber cables in a an Optical Remote I/O System. APF
cable is especially instrumental in simplifying wiring and reducing cost.
Terminology
A variety of basic Systems and Subsystems can be constructed and combined
in many ways to meet a wide range of control requirements. Throughout this
manual, particular terms are used to refer to these basic systems, and they are
defined as follows.
A Control System is the extended system, including all external devices such as
stepping motors, mechatronic modules, and control components (solenoids,
sensors, switches, etc.).
A PC System is a system which includes a Programmable Controller (PC) and
all it controls up to, but not including, any external devices.
A Remote I/O System includes all the Optical and Wired Remote I/O subsystems under the control of a single PC. These systems can perform distributed
control actions, such as remote operation of several large machines, by executing a program in the memory of a single PC’s CPU.
Model numbers have been shortened. For example, a C200H-RT001 Remote
I/O Slave Unit is called simply a “C200H Slave.” See Appendix A for a complete
list of all products covered in this manual, along with their model numbers.
5
SECTION 2
System Design
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
Basic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multilevel Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C20, P-type, and K-type Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C120 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C500 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C1000H and C2000H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C200H System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combined Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connection Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Section
Basic System
2-1
2-1
Basic System
Some basic Systems of Remote I/O Units (i.e., Masters and Slaves), I/O Link
Units, and Optical I/O Units are shown in the following table.
! Caution
Unit Connection
Master
Slave
Slave
Master
I/O Link Unit
I/O Link Unit
Master
Optical I/O Unit
Optical I/O Unit
Master
Slave
I/O Link Unit*
Optical I/O Unit
Master
Slave
Slave
Optical I/O Unit
I/O Link Units cannot be connected to Slaves in C200H Systems.
One Master is always necessary to connect Slaves, I/O Link Units, and Optical
I/O Units. Slaves, I/O Link Units, and Optical I/O Units can be used in combination. Connect all Slaves, I/O Link Units, and Optical I/O Units in series starting
from the Master. The only condition that must be met in regard to the order of
connecting Remote I/O Units is that the Master be on one end of the System and
I/O Link Units cannot be connected after C200H Slaves.
There are three types of Master: One for the C120, one for the C500 (which is
also used for the C120, C1000H, and C2000H), and one for the C200H. Two
type of Slaves are available: One for the C500, C1000H, and C2000H, and one
for the C200H. There are no Masters or Slaves available for the C20, P-type
PCs, or K-type PCs.
The I/O Link Unit also comes in three types: the C20 I/O Link Unit for the C20,
K-type PCs, and P-type PCs, the C120 I/O Link Unit for the C120, and the C500
I/O Link Unit for the C500, C1000H, and C2000H. There is no I/O Link Unit for the
C200H.
Mounting Units
C500 Slaves are mounted to the I/O Interface Unit’s position on the Slave Rack
and connected in series to the Master. C200H Slaves are mounted to the right
side of a Backplane where the Power Supply normally goes. A Power Supply is
normally built into the Slave.
C200H and C500 Masters can be mounted to any slot on the CPU Rack or Expansion I/O Rack. C120 Masters are mounted to C120-SIO27 Remote I/O Rack
only.
The C500 I/O Link Unit is mounted to any slot on a C500, C1000H, or C200H
CPU Rack or Expansion I/O Rack and the C120 I/O Link Unit is mounted to the
C120-SIO23 I/O Link Rack. The C20 I/O Link Unit is free-standing and is connected via a Connecting Cable to the C20, K-type, or P-type CPU or Expansion
I/O Unit.
Connecting Wired
Subsystems
8
Wired Subsystems and Optical Subsystems can be connected together in the
same PC System as described in 2-2 Multilevel Systems. Any Wired Units used
(e.g., Wired Slaves or Remote Terminals) must be counted against the total
number of Units connectable in any System, as shown below.
Section
Basic System
Maximum Number of
Connectable Remote I/O
Units
Item
C120/C500
Masters per PC
Slaves per Master
Slaves per PC
Total Slaves, I/O Link Units, and
Optical I/O Units per Master
4
2
8
32
Connection words per Master
16 words
C1000H/
C2000H
2-1
C200H*
8
2
8
–
16
5
64 (Repeater Unit required for
more than 32 Units.)
32 words
*In C200H Systems, the maximum number of connectable Units and words is the same
regardless of whether one or two Masters are used.
! Caution
Total I/O Points
In C1000H and C2000H Systems, the CPU determines the number of connected Slaves from the assigned Unit numbers, as shown in the following table.
It is thus important to always set Unit numbers in order starting from #0 so that
the number of Units that can be used in the System is not limited.
Largest Unit No. Set
Number of Units Connected
0 or 1
2
2 or 3
4
4 or 5
6
6 or 7
8
The total number of I/O points in the System must not exceed the number of I/O
points provided by the CPU to which the Master is mounted.
The number of I/O points in a C1000H System can be increased up to 2,048, and
the number of points in a C200H System can be increased to 1,680, by including
Remote I/O Units and the necessary related Units. The total number of I/O points
available from the CPU Rack or Expansion I/O Racks, however, is 1,024.
CPU
C2000H
C1000H
C500
C200H
C120
Maximum Number of I/O Points
2,048
1,024 (expandable up to 2,048 points)
512
336 (expandable to 1,680 points)
256
Total number of I/O points in System
=
Total number of I/O points on CPU and Expansion I/O Racks
+
Total number of I/O points on Optical Slave Racks
+
Total number of points on I/O Link Units
+
Total number of points on Optical I/O Units
+
Total number of I/O points in Wired Subsystems,
i.e., Wired Slave Racks and Remote Terminals
9
Section
Multilevel Systems
2-2
2-2
Multilevel Systems
There is no reason that a Remote I/O System must remain restricted to one Master or to either wired or optical communications. PCs support multiple Masters,
some of which can be Wired and some of which can be Optical.
If there is more than one Master mounted under the control of a single CPU,
each Master forms the beginning of a Remote I/O Subsystem. Although the
number of Subsystems supported by each PC is limited, each Subsystem can
be considered independently from the others as long as the total capacity of the
PC is not exceeded. It is important to note that although both Wired and Optical
Masters can be controlled by the same CPU, Optical and Wired Remote I/O
Units cannot be combined in the same Subsystem, i.e., Optical Masters can be
connected only to Optical Slaves, Optical I/O Units, and I/O Link Units; Wired
Masters can be connected only to Wired Slaves, Remote Terminals, and I/O Terminals.
In the example on the next page, two CPU Racks are used. The one in the upper
left corner controls two Remote I/O Subsystems, one Wired and one Optical.
The Optical System contains an I/O Link to the other CPU Rack (at the right),
which has one Remote I/O Subsystem controlled by it.
The Optical I/O Unit, Slave Rack, and Expansion I/O Rack beneath the CPU
Rack at the right are controlled through the Optical Master on this CPU Rack.
This Optical Master also connects the CPU to the C20 I/O Link Unit.
Another aspect of Remote I/O Systems demonstrated by this diagram is the
presence of Expansion I/O Racks, both connected to a CPU Rack and to Slave
Racks. Although normally not shown in system diagrams for Link Systems, Expansion I/O Racks can be used to increase the number of I/O Units mountable at
any one location.
10
Section
C120 Systems
C200H CPU Rack
Wired Master
2-4
C200H Optical Slave Rack
Wire cable
Optical
Slave
Optical Master
Optical cable
Wire cable
Optical cable
Wire cable
C2000H
CPU Rack
Optical
Master
C200H Wired Slave Rack
Expansion I/O Rack
Wired
Slave
Wire cable
Expansion I/O Rack
I/O Link Unit
Optical cable
Wire cable
Optical
I/O Unit
C20 I/O
Link Unit
C20, K-type
or P-type PC
C500 Wired
Slave Rack
Optical cable
Wired
Slave
Optical cable
Wire cable
C200H Optical Slave Rack
Remote
Terminal
Wire cable Wire cable
Optical Slave
Expansion I/O Rack
Remote
Terminal
2-3
C20, P-type, and K-type Systems
The C20, P-type PCs, and K-type PCs can be connected to Remote I/O System
only through the C20 I/O Link Unit. They can thus send data to and receive data
from the PC that controls the Remote I/O System, but they cannot control their
own Remote I/O System. These PCs are therefore included in some of the other
system configurations, but none are provided for them here.
2-4
C120 Systems
Up to four Masters can be connected to any one PC and up to two Slaves can be
connected to any one Master. In C120 System, either C120 Masters or C500
Masters can be used. Which Master is used makes no difference to the operation of the Remote I/O System. The C120 Master 3G2A6-RM001-(P)E is
mounted to the upper slot of the Remote I/O Rack 3G2C4-SI027-E (100 VAC).
11
Section
C120 Systems
2-4
The C500 Master C500-RM001-(P)V1 is mounted to a C500 Expansion I/O
Rack (connected to the C120 CPU). Slaves can be mounted only to the C500
Expansion I/O Rack, and they must be mounted to the leftmost slot of the Rack.
The C120 provides 256 I/O points. This means that the total number of points
used for I/O Units, I/O Link Units, and Optical I/O Units must be 256 or less. If, for
example, 256 points are controlled by one Master connected to a C120, no more
Masters can be employed for that C120, and no more I/O points can be added to
the Remote I/O System.
Refer to 5-2 Optical Fiber Cable for maximum cable lengths.
Example 1
The three Systems in this example show the different ways the basic Optical Remote I/O Units can be arranged. The first System uses only Slaves, as would be
done if a more I/O points were required in each location than could be provided
by Optical I/O Units or if future expandability was necessary. The second System uses only Optical I/O Units to provide minimal I/O points at each location.
The third System incorporates both Slaves and Optical I/O Units, as would be
necessary in many Systems to provide the specific number of points needed at
different types of control locations.
Here, the first System uses a C500 Master on a C500 Expansion I/O Rack; the
other two Systems, a C120 Master on a C120 Remote I/O Rack. Either of these
Systems could be changed to use the other type of Master without affecting Remote I/O System Operation. The difference would be the number of I/O points
that could be provided from the Rack containing the Master.
For limitations in Unit connections, refer to Maximum Number of Connectable
Remote I/O Units under 2-1 Basic System.
Master and Slaves
C120 CPU Rack
Optical Fiber Cable
(APF/PCF)
C500 Slave
3G2A5-RT002-(P)EV1
C500 Slave
Racks
C500 Master
3G2A5-RM001-(P)EV1
C500 Slave
3G2A5-RT001-(P)EV1
12
Section
C120 Systems
2-4
Optical I/O Units
C120 CPU Rack
Optical Fiber Cable (APF/PCF)
C120 Remote I/O
Rack
C120 Master
3G2A6-RM001-(P)E
Optical I/O Units
Optical I/O Units
32 Units max.
Any I/O Units on the CPU Rack or
Remote I/O Rack must be included
in this total.
Slaves and Optical I/O Units
C120 Rack
Optical Fiber Cable (APF/PCF)
C120 CPU Remote
I/O Rack
C120 Master
3G2A6-RM001-(P)E
Optical I/O Units
Slave Rack
C500 Slave
3G2A5-RT002-(P)EV1
Optical I/O Units
32 Units max.
Example 2 I/O Link Units
Not only the C20 and C120 I/O Link Units but also the C500 I/O Link Unit can be
connected to the System. A maximum of 256 points on I/O Link Units can be connected when all of these I/O Link Units are set to 16 points, i.e., 16 I/O Link Units
per Master. (The C20 I/O Link Unit has no setting for the number of I/O points and
is thus limited to 32 points.)
Optical Fiber Cable
(APF/PCF)
C120 CPU Rack
To I/O
Link Unit
C120 CPU Rack
C120
Remote
I/O Rack
C120 Master
3G2A6-RM001-(P)E
C120 I/O
Link Rack
C120 I/O Link Unit
3G2A6-LK010-(P)E
C20, K-type
or P-type PC
C20 I/O Link Unit
3G2C7-LK011-(P)E
13
Section
C500 Systems
2-5
Example 3 I/O Link Units, Slaves, and Optical I/O Units
Any combination of I/O Link Units, Slaves, and Optical I/O Units may be connected.
Optical Fiber Cable
(APF/PCF)
C120 CPU Rack
C120 CPU Rack
Slave Rack
C120
Remote
I/O Rack
C120 I/O
Link Rack
C120 Master
3G2A6-RM001-(P)E
C120 I/O Link Unit
3G2A6-LK010-(P)E
C500 Slave
3G2A5-RT002-(P)EV1
2-5
Optical I/O
Units
C500 Systems
Up to four Masters can be mounted on the same PC.
C500 PCs provide 512 I/O points. This means that the total number of points
used for I/O Units, I/O Link Units, and Optical I/O Units must be 512 or less. If, for
example, 512 points are controlled by one Master connected to a C500, no more
Masters or I/O points can be employed for that C500.
Refer to 5-2 Optical Fiber Cable for maximum cable lengths. For limitations in
Unit connections, refer to Maximum Number of Connectable Remote I/O Units
under 2-1 Basic System.
Example 1 Master and Slaves
Optical Fiber Cable (APF/PCF)
C500 CPU Rack
C500 Master
3G2A5-RM001-(P)EV1
C500 Slave
3G2A5-RT001-(P)EV1
14
C500 Slave
3G2A5-RT002-(P)EV1
Slave Racks
Section
C500 Systems
2-5
Example 2 Optical I/O Units
Up to 64 Optical I/O Units can be connected to one Master on a C500. If more
than 32 Units are connected to the same Master, a Repeater Unit must be installed after the first 32 Units.
Optical Fiber Cable (APF/PCF)
C500 CPU Rack
C500 Master
3G2A5-RM001-(P)EV1
Optical I/O Units
Repeater Unit
3G5A2-RPT01-(P)E
32 Units
Optical I/O Units
32 Units max.
Example 3 Slaves and Optical I/O Units
Up to 64 Units, consisting of Optical I/O Units and up to two Slaves, can be connected to one Master on a C500. If more than 32 Units are connected to the
same Master, a Repeater Unit must be installed after the first 32 Units. The
Slave’s I/O Units are not counted in the 32, but the I/O points must be counted in
the total I/O points.
Optical Fiber Cable (APF/PCF)
C500 Slave Rack
C500 CPU Rack
C500 Master
3G2A5-RM001-(P)EV1
Optical I/O Units
C500 Slave
Repeater Unit
3G2A5-RT002-(P)EV1 3G5A2-RPT01-(P)E
Optical I/O Units
32 Units
(Not including the I/O Units on the Slave Rack.)
32 Units max.
15
Section
C500 Systems
2-5
Example 4 I/O Link Units
A maximum of 512 I/O points on I/O Units can be connected per Master, i.e.,
when the I/O Link Units are all set for 16 points each, up to 32 Units can be connected to one Master on a C500. This would mean, however, that all I/O points
provided by the PC would be occupied and that no other I/O Units could be connected. (The C20 I/O Link Unit has no setting for the number of I/O points and is
thus limited to 32 points.)
C500 CPU Rack
Optical Fiber Cable
(APF/PCF)
C500 CPU
Rack
Expansion
I/O Rack
C500 CPU Rack
C20,
K-type
or P-type
PC
C20 I/O Link Unit
3G2C7-LK011-(P)E
C500 Master
3G2A5-RM001-(P)EV1
I/O Link Unit
3G2A5-LK010-(P)E
I/O Link Unit
3G2A5-LK010-(P)E
Example 5 I/O Link Units, Slaves, and Optical I/O Units
Up to two Slaves can be connected to one Master. Each I/O Link Unit requires 16
or 32 points (depending on the setting) and each Optical I/O Unit requires eight
points. These may be used in any combination of I/O which does not exceed the
total number of I/O points provided by the PC to which the Master is connected.
If more than 32 Units are connected to the same Master, a Repeater Unit must
be installed after the first 32 Units. The Slave’s I/O Units are not counted in the 32
Units, but the I/O points must be included in the total number of I/O points.
Optical Fiber Cable (APF/PCF)
C500 CPU
Rack
C500 Master
3G2A5-RM001-(P)EV1
Slave Rack
C500 CPU Rack
I/O Link Unit
3G2A5-LK010-(P)E
C500 Slave
3G2A5-RT002-(P)EV1
32 Units
(Not including the I/O Units on the Slave Rack.)
16
Optical I/O Units
Repeater Unit
3G5A2-RPT01-(P)E
32 Units max.
Section
C1000H and C2000H Systems
2-6
2-6
C1000H and C2000H Systems
Up to eight Masters can be connected to the same PC.
The C1000H and C2000H provide 2,048 I/O points. This means that the total
number of points used for I/O Units, I/O Link Units, and Optical I/O Units must be
2,048 or less. If, for example, 2,048 points are controlled by five or more Masters
on a C1000H or C2000H, no more Masters or I/O points can be employed on that
C1000H or C2000H. (The number of I/O points for the I/O Units on a C1000H’s
CPU Rack or Expansion I/O Racks, however, must be keep to within 1,204.) The
number of words in any one Remote I/O Subsystem must also be kept to within
32.
For maximum cable lengths, refer to 5-2 Optical Fiber Cable. For limitations in
Unit connections, refer to Maximum Number of Connectable Remote I/O Units
under 2-1 Basic System.
Example 1 Master and Slaves
Up to two Slaves can be connected to one Master.
Optical Fiber Cable (APF/PCF)
C1000H or C2000H
CPU Rack
C500 Slave
3G2A5-RT002-(P)EV1
C500 Master
3G2A5-RM001-(P)EV1
C500 Slave Racks
C500 Slave
3G2A5-RM001-(P)EV1
Example 2 Optical I/O Units
C1000H or C2000H
CPU Rack
C500 Master
3G2A5-RT001-(P)EV1
Optical Fiber Cable (APF/PCF)
Optical I/O Units
32 Units
Repeater Unit
3G5A2-RPT01-(P)E
Optical I/O Units
32 Units max.
Up to 64 Optical I/O Units can be connected to one Master on a C1000H or
C2000H. If more than 32 Units are connected to the same Master on a PC, a
Repeater Unit must be installed after the first 32 Units.
17
Section
C1000H and C2000H Systems
2-6
Example 3 Slaves and Optical I/O Units
C1000H or C2000H
CPU Rack
C500 Master
3G2A5-RM001-(P)EV1
Optical Fiber Cable (APF/PCF)
Optical I/O Units
C500 Slave Rack
C500 Slave
3G2A5-RT002-(P)EV1
Repeater Unit
3G5A2-RPT01-(P)E
Optical I/O Units
32 Units
32 Units
max.
(Not including the I/O Units on the Slave Rack.)
Up to 64 Units, consisting of Optical I/O Units and up to two Slaves, can be connected to one Master on a C1000H or C2000H. If more than 32 Units are connected to the same Master, a Repeater Unit must be installed after the first 32
Units. The Slave’s I/O Units are not counted in the 32, but the I/O points must be
counted in the I/O point total.
Example 4 I/O Link Units
A maximum of 512 I/O points on I/O Link Units can be connected per master, i.e.,
when the I/O Link Units are all set for 16 points each, up to 32 Units can be connected to one Master on a C1000H or C2000H. (The C20 I/O Link Unit has no
setting for the number of I/O points and is thus limited to 32 points.)
C1000H or C2000H CPU
Rack
Optical Fiber Cable
(APF/PCF)
C20,
K-type
or P-type
PC
C1000H, or
C2000H CPU Rack
C500 Master
3G2A5-RM001-(P)EV1
18
C1000H or C2000H
CPU Rack
I/O Link Unit
3G2A5-LK010-(P)E
C500, C1000H or C2000H
Expansion I/O Rack
I/O Link Unit
3G2A5-LK010-(P)E
C20 I/O Link Unit
3G2C7-LK011-(P)E
Section
C200H System
2-7
Example 5 I/O Link Units, Slaves, and Optical I/O Units
Optical Fiber Cable (APF/PCF)
C1000H, or
C2000H CPU Rack
C500 Master
3G2A5-RM001-(P)EV1
C500 Slave Rack
C1000H or C2000H
CPU Rack
I/O Link Unit
3G2A5-LK010-(P)E
Slave
3G2A5-LK010-(P)E
Optical I/O Units
Repeater Unit
3G5A2-RPT01-(P)E
32 Units max.
32 Units
(Not including the I/O Units on the Slave Rack.)
Up to two Slaves can be connected to one Master. Each I/O Link Unit requires 16
or 32 points (depending on the setting) and each Optical I/O Unit requires eight
points. These may be used in any combination desired that does not exceed the
total number of I/O points provided by the CPU to which the Master is connected.
If more than 32 Units are connected to the same Master, a Repeater Unit must
be installed after the first 32 Units. The Slave’s I/O Units are not counted in the
32, but the I/O points must be counted in the I/O point total.
2-7
C200H System
A maximum of two Masters, either optical or wired, may be connected in one
C200H PC System. Masters may be mounted directly to the CPU Rack or to Expansion I/O Racks. Any slots may be used except for the two rightmost slots of
the CPU Rack. Using the two rightmost slots will prevent mounting devices directly to the CPU.
Regardless of the number of Masters, a maximum of five Slave Racks, either
Optical or Wired, can be attached. Only I/O Units or Special I/O Units can be
mounted to Slave Racks. A maximum of 64 Optical I/O Units can be connected,
with a Repeater Unit installed after the first 32 Units. The number of words in any
one Remote I/O Subsystem must be kept to within 32.
There is a limit to the number of Special I/O Units which can be mounted to Slave
Racks. The following table gives the maximum total of Units possible from
groups A, B, C, or D when no Special I/O Units are mounted to any other Racks.
These totals assume that only those Units in one of these groups are used.
A
High-speed Counter Units
B
C
D
Multipoint I/O Units
Temperature Sensor Units
NC211 Position Control Units
8 Units total
6 Units total
2 Units total
Analog I/O Units
NC111 and NC 112 Position
Control Units
ASCII Units
4 Units total
19
Section
C200H System
2-7
When combining Units from more than one of these three groups, both of the
following equations must be satisfied:
3A + B + 2C + 6D ≤ 12
A+B+C+D≤8
If the number of Special I/O Units controlled by the PC is ten, then no additional
Special I/O Units may be mounted to any Rack.
Example 1 Basic C200H System
Optical Fiber cable (AGF/PF)
C200H CPU
Rack
C200H Slave
Rack
C200H Slave
C200H-RT001-P
C200H-RT002-P
C200H Master
C200H-RM001-PV1
C200H Slave
Rack
C200H Slave
C200H-RT001-P
C200H-RT002-P
C200H Slave Racks (5 max.)
Optical I/O
Units (64 max.)
Example 2 Slaves Only
One Master
Optical Fiber Cable (APF/PCF)
C200H CPU
Rack
C200H Slave
Rack
C200H Slave Rack
C200H Master
C200H-RM001-PV1
C200H Slave Rack
20
C200H Slave Rack
C200H Slave
C200H-RT001/002-P
C200H Slave Rack
Section
C200H System
2-7
Two Masters
Optical Fiber cable (APF/PCF)
C200H Master
C200H-RM001-PV1
C200H Slave
Rack
C200H CPU
Rack
Expansion I/O
Rack
C200H Slave
Rack
C200H
Slave Rack
C200H Slave Rack
C200H Slave Rack
C200H Slave
C200H-RT001/002-P
C200H Master
C200H-RM001-PV1
Example 3 Slaves with Expansion I/O Racks
I/O Connecting Cable can be used to connect up to two Expansion I/O Racks to
a Slave Rack. (The I/O Connecting Cable must be 2 m or less in length.) In any
one C200H System, however, only a total of 5 Slaves and Slave-connected Expansion I/O Racks can be connected.
One Master
Optical Fiber Cable (APF/PCF)
C200H Master
C200H-RM001-P
C200H Slave Rack
C200H CPU
Rack
Expansion I/O Rack
I/O Connecting
Cable
C200H Slave
Rack
I/O Connecting
Cable
Expansion I/O Rack
C200H Slave
Rack
21
Section
Combined Systems
2-8
Two Masters
C200H Masters
C200H-RM001-PV1
Optical Fiber Cable (APF/PCF)
C200H CPU Rack
C200H Slave Rack
Expansion I/O Rack
I/O Connecting
Cable
I/O Connecting
Cable
C200H Slave
Rack
Expansion I/O Rack
Expansion I/O
Rack
Example 4 I/O Link Units
A maximum of 512 I/O points on I/O Link Units can be connected per master, i.e.,
when the I/O Link Units are all set for 16 points each, up to 32 Units can be connected to one Master on a C200H. (The C20 I/O Link Unit has no setting for the
number of I/O points and is thus limited to 32 points.)
C1000H or C2000H CPU
Rack
Optical Fiber Cable
(APF/PCF)
C200H CPU
Rack
C20,
K-type
or P-type
PC
C200H Master
C200H-RM001-PV1
C500, C1000H or C2000H
Expansion I/O Rack
C20 I/O Link Unit
3G2C7-LK011-(P)E
I/O Link Unit
3G2A5-LK010-(P)E
2-8
Combined Systems
Example 1 Connecting Other Units to C200H Masters
C500 Slaves
22
Up to two C500 Slaves, either optical or wired, can be connected to the C200H
PC (regardless of the number of C200H Masters). C500 Slaves and C200H
Slaves can also be used in combination; however, a maximum of five Slaves can
be attached, with each C500 Slave counted as two Slaves. Any Wired Slaves
must be counted in the total. Here, Special I/O Units can be mounted to C500
Section
Combined Systems
2-8
Slave Racks as always, although a maximum of 20 words can be allocated on
each C500 slave Rack. Words for Units on C500 Slave Racks are automatically
allocated from the left as is normal in C500 Systems.
Optical Fiber Cable (APF/PCF)
C500 Slave Rack
C200H CPU Rack
C200H Master
C200H-RM001-PV1
C500 Slave Rack
C500 Slave
3G2A5-RT002-(P)EV1
Connecting through I/O
Link Units
C500 Slave
3G2A5-RT001/002(P)V1
The C200H PC can be connected to C120, C500, C1000H, and C2000H PCs
through I/O Link Units. I/O Link Unit bits are allocated between IR 200 and IR
231. Words are allocated into this area according to I/O Link Unit settings for 1
word (16 points) or 2 (32 points).
Optical Fiber Cable (APF/PCF)
C200H CPU Rack
C200H Slave
Rack
C200H Master
C200H-RM001-PV1
C500, C1000H, or C2000H
CPU Rack
I/O Link Unit
3G2A5-LK010-(P)E
Optical I/O Unit
32 words max.
23
Section
Connection Precautions
2-9
Example 2 Connecting C200H Slaves to Other Masters
C200H Slaves can be connected to C120 or C500 Masters. Connection conditions are the same as those for C500 Slaves, i.e., words for I/O Units on C200H
Slaves are automatically allocated. Here, however, Special I/O Units cannot be
mounted, and C200H I/O Units are handled as one word per Unit.
Optical Fiber Cable (APF/PCF)
C500 CPU Rack
C200H Slave
Rack
C200H Slave
Rack
C500 Master 3G2A5-RM001-(P)EV1
C200H Slave
C200H-RT001/002-P
64 Units max.
32 words
max.
Optical I/O Units
Repeater Unit
3G2A5-RPT01-(P)E required
for more than 32 Units.
Note If a Unit with the blown-fuse detection function and alarm detection circuit
(C200H-OD411/213/214/OA221) is used on a C200H Slave Rack that is connected to a PC other than a C200H/C200HS, all 16 I/O points will be regarded as
outputs. Therefore, you will not be able to read the flags for blown-fuse detection
function and alarm detection circuit from the ladder program.
2-9
Connection Precautions
For limitations in Unit connections, refer to Maximum Number of Connectable
Remote I/O Units under 2-1 Basic System.
Slaves
Install Slaves on the leftmost slot of the Rack in all but C200H Systems. In
C200H Systems, Slaves contain the power supply and are mounted to the right
of the Backplane, not to a slot.
Slave Rack
C500 Slave
A Master cannot be mounted to a Slave Rack or to any Expansion I/O Rack connected to a Slave Rack.
Slave Rack
C500 Slave
24
Section
Connection Precautions
2-9
A Slave Rack cannot be connected directly to a CPU Rack, i.e., it must be connected through the Slave to the Master.
CPU
Rack
Slave Rack
C500 Slave
When connecting an Expansion I/O Rack in a C500, C1000H, C2000H, or C120
System, it must not be connected to a Slave Rack. Expansion I/O Racks may be
connected to Slave Racks in C200H Systems.
Link Adapters
When the Units are connected in series, a disconnected line or a power failure in
any one of them stops data transfer down the line past that point. This problem
can be avoided by using Link Adapters. If a power failure occurs in a Unit connected to a branch line of a Link Adapter, the Unit is bypassed and signals continue to be transmitted to other Units down the line. For details on this and other
uses of Link Adapters, refer to the Link Adapter Operation Manual.
If a Remote I/O System is connected in series, the entire System will stop operating if any one link in the System is broken. To prevent this, Branching Link Adapters can be used with the Slave Racks, Optical I/O Units, and I/O Link Units in the
System so that actual series connections go through the Link Adapters on a
main line.
In a branched System, the Master and the last Unit in the System are on the main
line that runs through the Link Adapters; the rest of the Units in the System are on
branch lines. Because connections do not run through any Unit linked in the System, the rest of the System will continue operating regardless of the status of any
one Unit.
Although beyond the scope of this Manual, there are measures that can be taken
to shut down the PC System for failures in any one part of it even when Link
Adapters are used.
25
Section
Connection Precautions
2-9
A Remote I/O System connected through Link Adapters is shown below.
Link Adapter Unit
3G2A9-AL002-(P)E
Link Adapter Unit
3G2A9-AL002-(P)E
C500 CPU
Rack
C120 CPU Rack
C500 CPU
Rack
C500 Master
3G2A5-RM001-(P)EV1
C500 I/O Link Unit
3G2A5-LK010-(P)E
C120
I/O Link
Rack
C120 I/O Link Unit
3G2A6-LK010-(P)E
26
C500 CPU
Rack
C500 I/O Link Unit
3G2A5-LK010-(P)E
SECTION 3
Operations
3-1
3-2
3-3
3-4
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Link Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Number and I/O Word Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Word Allocation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27
Section
Block Diagrams
3-1
3-1
Block Diagrams
The following block diagrams show the basic functional blocks for Units available in Optical Remote I/O Systems.
C120 and C500 Master and Slave
Master
Fiberoptic/
electric
converter
Serial/
parallel
converter
I/O
bus
Data
memory
CPU
System
memory
Counter
SYSMAC
C-series
CPU
Converting
circuit
Transmitting/Error
Work
memory
I/O
interface
Test OK
Terminator
check
Test
switch
Fiberoptic/
electric
converter
Serial/
parallel
converter
I/O
bus
CPU
Transmitting/Error
I/O
interface
Slave
28
Data
memory
SYSMAC
C-series
interface
Work
memory
RUN output
System
memory
I/O error
RUN output
SYSMAC
C-series
Backplane
Section
Block Diagrams
3-1
C200H Master and Slave
Master
Fiberoptic/
electric
converter
Serial/
parallel
converter
I/O
bus
CPU
System
memory
C200H
CPU
C200H
interface
XMT/RCV Transmitting
Work
memory
I/O
interface
Error
End RS
Unit No. (machine no.)
Slave
Fiberoptic/
electric
converter
Serial/
parallel
converter
CPU
System
memory
Data
memory
I/O
bus
C200H
interface
RUN
Work
memory
+24 V
XMT/RCV
I/O
interface
RUN output
+5 V
C200H
Backplane
POWER
ERROR
1
ERROR
2
Unit no./ terminator
Power
supply
RUN output
Power source
100 to 120/200 to 240
VAC
29
Section
Block Diagrams
3-1
I/O Link Unit
I/O bus
Fiberoptic/
electric
converter
Serial/
parallel
converter
System
memory
CPU
Data
memory
I/O bus
C-series
interface
Transmitting/
Error
Work
memory
16-pt input
SW1
I/O
interface
16-pt output
SW2
RUN output
16-pt I/O
32-pt output
Repeater
output
Used when
Link Adapter
is connected.
Optical I/O Unit
I/O bus
Fiberoptic/
electric
converter
Serial/
parallel
converter
I/O bus
Work
memory
CPU
System
memory
Transmitting/ Error
I/O
interface
Word setting
Terminator
setting
RUN
output
AC power
source
Power
supply
+5 V
+24 V
Power
source
30
C-series
I/O bus
Section
I/O Link Unit Operation
3-2
3-2
I/O Link Unit Operation
Of the three I/O Link Units, the C120 and C500 I/O Link Units can be set for operation via 16 input points, 16 outputs, 16 input and 16 output points, or 32 output
points. The C20 I/O Link Units has no setting for the number of I/O points, and
always operates via 16 input and 16 output points.
(1) 16 Input Bits
In the System shown below, CPU B sees 16 input bits. The I/O word allocations
are determined by mounting location. CPU A sees 16 output bits. The word allocations are determined by the settings on the I/O Link Unit. The respective input
and output words are treated as ordinary I/O words, nd data is transferred from
CPU A to CPU B. “n” is the word set on the I/O Link Unit, i.e., that allocated it by
the PC with the Master (CPU A). “m” is the word allocated to the I/O Link Unit by
the PC to which it is mounted (CPU B).
Master
I/O Link Unit
CPU A
CPU B
RM001
LK010
O
(n) U
T
I
N
(m)
Optical
fiber cable
LK010 setting
Transmission bits: 16 input bits: IR m
(2) 16 Output Bits
As shown, the situation just explained is exactly reversed.
I/O Link Unit
Master
CPU A
CPU B
RM001
LK010
(n)
O
U
T
I
N
(m)
Optical
fiber cable
LK010 setting
Transmission bits: 16 output bits, IR m
(3) 16 Input and
16 Output Bits
As shown, the two previously described situations are combined into one.
I/O Link Unit
Master
CPU A
CPU B
(m)
O
(n) U
T
RM001
Optical
fiber cable
I
(n+1) N
LK010
I
N
O
U
T
(m+1)
LK010-E setting
Transmission bits:
16 input bits and 16 output bits:
IR m and IR m+1
31
Section
Unit Number and I/O Word Allocation
(4) 32 Output Bits
3-3
Again, the situation is the same as 16 output bits, except that four words are
used instead of two.
Master
I/O Link Unit
CPU A
CPU B
(m)
I
(n) N
RM001
Optical
fiber cable
(n+1)
I
N
LK010
O
U
T
O
U
T
(m+1)
LK010-E setting
Transmission bits: 32 output bits:
IR m and IR m+1
3-3
Unit Number and I/O Word Allocation
Allocation of I/O words for C20 I/O Link Units for C20, K-type PCs, and P-type
PCs is covered in the Operation Manuals for these PCs and is not duplicated
here. The remote I/O words allocated for the PC of the Master to which an C20
I/O Link Unit is connected are described below.
Basic Allocation
Word allocations on Racks in Remote I/O Systems follow basically the same
pattern as the PC to which the Master is mounted, i.e., by the mounting order of
and by the number of words required for each Unit mounted for C120, C500,
C1000H, and C2000H Systems and by fixed slot words in C200H Systems.
In either case, allocations start from the lowest word starting on the left side of
the CPU Rack. When a Master is reached on a Rack, allocation jumps to the
leftmost Unit mounted on the first Slave Rack connected to the Master, and then
to the second Slave Rack, etc, until the terminator is reached. Then allocations
return to the Unit following the Master and continue across the CPU Rack and
Expansion I/O Racks until all the Units on all Racks have been allocated. Details
on and examples of allocation are provided below.
Words for Units not mounted to Racks (i.e., Optical I/O Units and I/O Link Units)
are not determined as described, but according to switch settings on the Units,
as described below. I
I/O Link Units are allocated words both by the CPU to which they are directly
connected and by the CPU to which they are connected via the Remote I/O System. When programming operations involving I/O Link Units, be sure you are
using the words allocated by the CPU for which the program is being written.
Terminator
There must be one terminator set for each Master, and it must be the Unit at the
opposite end of the I/O bus from the Master.The terminator may be a Slave, an
I/O Link Unit, or an Optical I/O Unit. The Master checks for a terminator immediately upon power application. If the terminator is properly set, the other Units
connected to the I/O bus are acknowledged. All following operation is based on
this initial check. Therefore, if a Unit is not attached properly or if the power to a
Unit is not on when this check is performed, that Unit will be ignored during actual
operation.
Slave Unit Number and
Terminator Settings
Because more than one Slave can be attached to each Master, unit number settings are necessary to distinguish the Slaves. unit numbers 0 through 7 can be
set for C1000H, and C2000H Slaves; Unit numbers 0 through 4, for C200H
Slaves; and unit numbers 0 and 1 for C120 and C500 Slaves. The same unit
number cannot be used on more than one Slave under the same Master. Setting
undefined unit numbers will prevent Slave operation. Set the Slave connected to
32
Section
Unit Number and I/O Word Allocation
3-3
the Master as Unit #0, the Slave connected to Unit #0 as Unit #1, and so on. Setting unit numbers and a terminator is necessary for every Master, even when
only one Slave is connected. Refer to 4-4 Switch Settings for details.
Master
Slave #0 Set to Unit #0
Slave #1
Set to Unit #1. Set
as terminator.
I/O Units can be mounted to any slot on Slave Racks, just as in any other Rack.
Word numbers are assigned in the order the I/O Units are mounted. In C200H
Systems, words are allocated according to Slave unit numbers as shown in the
following table.
Unit Number
0
1
2
3
4
Words
50 to 59
60 to 69
70 to 79
80 to 89
90 to 99
If an Expansion I/O Rack is connected to C200H Slave Racks with I/O Connecting Cable, the Expansion I/O Rack is automatically allocated the words for the
next unit number. This number cannot be set for another Slave in the System.
I/O Unit Words on C500
Slaves in C200H Systems
I/O Units mounted on C500 Slave Racks connected to C200H Masters are allocated words as follows, according to the unit numbers of the C500 Slave .
Unit Number
0
1
2
3
Words
50 to 69
60 to 79
70 to 89
80 to 99
Note that consecutive unit numbers cannot be assigned to C500 Slaves because of overlapping word allocations.
I/O Units on C200H Slave Racks are automatically allocated words just like
other I/O Units, except that Special I/O Units are allocated special bits. All I/O
Units mounted on C500 Slave Racks also will be automatically allocated words
as usual, except that only 20 words can be used.
C200H Slaves Connected
in Other PC Systems
Connection conditions for C200H Slaves in other PC Systems (e.g., C500 or
C1000H) are the same as those for C500 Slaves. DIP switch settings for these
C200H Slaves must specify that they are not connected to C200H Masters. (See
4-4 Switch Settings.) Here, all I/O Units, including Special I/O Units, are automatically allocated words as usual, i.e., special bits are not allocated.
33
Unit Number and I/O Word Allocation
Section
3-3
An Expansion I/O Rack cannot be connected to a C500 Slave Rack via I/O Connecting Cable. Unlike C200H Slaves, C500 Slaves do not have switches for setting output OFF/output hold during transmission error. All data is cleared from
C500 Slaves during transmission errors.
I/O Link Unit Word
Settings
I/O Link Unit word settings determine which I/O words will be occupied by the
Unit. C120 and C500 I/O Link Units can be set to occupy 16 or 32 points. C20 I/O
Link Units always occupy 32 points. On C-series PCs there are 16 bits to a word,
so the I/O Link Unit will occupy either one or two words. Words 0 through 31 are
available. The actual words allocated in C200H, C1000H, and C2000H Systems will vary from the switch settings as described below. When setting words,
be sure not to set word numbers for one Unit which have already been set for
another Unit.
I/O Units mounted to Slave Racks are automatically assigned words according
to their mounting location. Words for all I/O Link Units must be set using their DIP
switches. For more details on settings, refer to 4-4 Switch Settings.
I/O Link Unit Words in
C200H Systems
Although other PCs can be attached to the C200H through I/O Link Units, word
allocations for these Units are the same as those for Optical I/O Units, i.e., words
200 through 231. The actual words allocated the I/O Link Units will be 200
greater than the values set on the Units’ switches.
Optical I/O Unit Word
Settings
Use the DIP switches on Optical I/O Units to set their I/O words. Do not combine
their input and output words into a single 16-point word. In other words, the two
8-point sections composing a single 16-point word must be either both input or
both output in all but C200H Systems. The actual Optical I/O Unit words in
C200H systems will be 200 greater than the values set on the Units’ switches.
For more details on settings, refer to 4-4 Switch Settings.
Word Multipliers of
C1000H and C2000H
The maximum number of bits a Master can transmit is 512 (32 words x 16 bits/
word). Words 0 to 31 can therefore be set for I/O Link Units and Optical I/O Units.
However, since the C1000H, and C2000H PCs can handle up to 2,048 bits (128
words x 16 bits/word), the Units cannot be assigned to words 32 to 127 of these
PCs without some identification other than the normal word settings. It is therefore necessary to assign numbers to the Masters to which I/O Link Units and Optical I/O Units are connected and identify the words with these numbers as well
as the word settings.
These additionally assigned numbers, which can be from 0 through 3, are called
“word multipliers.” The following equation illustrates the relationship between
word multipliers and word allocations.
I/O word allocation = (32 words x word multiplier) + (word set on Unit)
For example, suppose word 28 is set on an I/O Link Unit and word multiplier 2 is
assigned to the Master of that I/O Link Unit. The I/O word of the I/O Link Unit,
viewed from the PC, is computed as follows:
32 words x 2 + 28 words = word 92
A word multiplier does not have to be assigned to a Master to which only Slaves
are connected because word numbers will be automatically assigned by “free
location” to any I/O Units connected to the Slaves
The I/O words assigned to Optical I/O Units, Slaves, or I/O Link Units connected
to the Master with the lowest word multiplier must not be the same as the I/O
words assigned to the last I/O Unit.
The same word multiplier can be assigned to more than one Master. In this case,
however, the same word must not be set on the Units on a Master having the
same word multiplier as another Master.
Setting Word Multipliers
34
Set the word multipliers in a C1000H or C2000H System using the Programming
Console as shown below. Before setting word multipliers, set the mode selector
Unit Number and I/O Word Allocation
Section
3-3
switch to the PROGRAM position. Refer to your PC’s Operation Manual for details.
Note If a Unit with the blown-fuse detection function and alarm detection circuit
(C200H-OD411/213/214/OA221) is used on a C200H Slave Rack that is connected to a PC other than a C200H/C200HS, all 16 I/O points will be regarded as
outputs. Therefore, you will not be able to read the flags for blown-fuse detection
function and alarm detection circuit from the ladder program.
Key sequence to generate the I/O table.
CPU checks the I/O word assignment.
Appears about two seconds after the automatic I/O word check. Indicates word
multplier is not yet set.
Word multiplier set upon pressing
WRITE key; next master no. displayed.
Repeatedly designate word multpliers.
Appears for previously register word
multpliers. Press write if nothing has to
be changed.
Displayed when all word multpliers. are
set.
35
Section
I/O Word Allocation Examples
3-4
Word multipliers must be assigned only to the Masters to which I/O Link Units or
Optical I/O Units are connected. This message is not displayed for Masters to
which only Slaves are connected.
Asking for input of a word multplier
Indicates the word multplier is not yet set.
Mounting sequence of Master
Master symbol
I/O slot no.
Mounting sequence
3-4
I/O Word Allocation Examples
The following examples detail word allocations in the IR area.
Example 1 C500 with
Slaves
With two Slaves connected to one Master, the Slaves are set to unit numbers 0
and 1. The order does not matter. The last Unit must be set as the terminator. If
only one Slave is connected, set it as Unit number 0 and set it as the terminator.
Slave #0
Masters
CPU Rack
Slave Rack
16 pts.
32 pts.
IR 18 & 19
32 pts.
IR 16 & 17
16 pts.
IR 15
16 pts.
IR 14
#0
Set to unit #0.
IR 7
64 pts.
IR 5 & 6
32 pts.
IR 1, 2, 3, & 4
16 pts.
IR 0
Slave #1
Expansion
I/O Rack
Slave Rack
32 pts.
IR 24 & 25
16 pts.
IR 23
16 pts.
IR 28
16 pts.
IR 22
32 pts.
IR 26 & 27
16 pts.
IR 21
16 pts.
IR 20
#1
Set to unit #1.
Set as terminator.
Slave #0
Slave Rack
36
16 pts.
IR 13
16 pts.
IR 12
64 pts.
IR 8, 9, 10, & 11
#0
Set to unit #0.
Set as terminator.
Section
I/O Word Allocation Examples
3-4
Example 2 C500 with Optical I/O Units
CPU Rack
Master
IR 30 “L”
16 pts.
IR 7
32 pts.
IR 5 & 6
64 pts.
IR 1, 2, 3, & 4
16 pts.
IR 0
IR 30 “L”
IR 31 “L”
IR 31 “L”
Set as terminator.
Optical I/O Units
Set the word of each
Unit by using the DIP
switch.
Because the I/O Units are assigned words starting at the lower end (word 00),
duplication can be avoided by starting the Optical I/O Unit words in reverse order
beginning with IR 31.
IR 00
IR 01
IR 02
IR 03
IR 04
IR 31
PC I/O points
Slave I/O points
I/O Link Units and
Optical I/O Units
Be sure that words set for Optical I/O Units or I/O Link Units do not overlap with
words being used for other I/O data. Do not combine input and output words into
one 16-point word. Two 8-point words (i.e., Optical I/O Units) composing one
16-point word must both be either input or output.
37
Section
I/O Word Allocation Examples
3-4
Example 3 C500 with Slaves and Optical I/O Units
CPU
Rack
Slave #0
Master
Slave Rack
Set to unit #0.
16 pts.
IR 7
32 pts.
IR 12 & 13
32 pts.
IR 5 & 6
32 pts.
IR 10 & 11
64 pts.
IR 1, 2, 3, & 4
16 pts.
IR 9
16 pts.
IR 0
16 pts.
IR 8
#0
Set to unit
#0
Slave #1
Slave Rack
IR 30 “L”
IR 30 “H”
IR 31 “L”
Optical I/O Units Set the
word of each unit by using
the DIP switch.
IR 31 “H”
16 pts.
IR 19
16 pts.
IR 18
64 pts.
IR 14 , 15, 16, & 17
#1
Set to unit #1.
Set as terminator.
Because the I/O Units are assigned words starting at the lower end (word 00),
duplication can be avoided by starting the Optical I/O Unit words from the upper
end.
38
Section
I/O Word Allocation Examples
3-4
Example 4 C500 with Slaves, I/O Link Units, and Optical I/O Units
CPU Rack
CPU Rack
Master
C20, K-type
or P-type PC
I/O Link Unit (32
pts) : IR 28 & 29
16 pts.
IR 8
16 pts.
IR 7
32 pts.
IR 5 & 6
64 pts.
IR 1, 2, 3, & 4
16 pts.
IR 0
I/O Link Unit (16
pts) : IR 30
Set to IR 28.
Slave Rack
Terminator
IR 31 “H”
IR 31 “L”
Optical I/O Units
16 pts.
IR 11
32 pts.
IR 9 & 10
#0
Set to unit #0
Because the I/O Units are assigned words starting at the lower end (word 00),
duplication can be avoided by starting the Optical I/O Unit words and I/O Link
Unit words from the upper end.
Do not use words being used for other I/O data. Do not combine input and output
words into one 16-point word. Two 8-point words (i.e., Optical I/O Units) composing one 16-point word must both be either input or output.
39
Section
I/O Word Allocation Examples
3-4
Example 5 C1000H or C2000H with Slaves, I/O Link Units, and Optical I/O Units
C1000H or C2000H CPU
Rack
Optical I/O Units
#0
Word Multiplier 0
Terminator
Slave Rack
16 pts.
IR 6
32 pts.
IR 8 & 9
16 pts.
IR 4
16 pts.
IR 7
32 pts.
IR 2 & 3
16 pts
IR 6
16 pts.
IR 1
16 pts.
IR 0
Slave #0
Set words:
IR 31 “H”
IR 30 “L”
Allocated words:
IR 31 “H”
IR 30 “L”
C500 Expansion I/O Rack
Slave Rack
No Word
Multiplier needed.
(I/O Link and optical
transmitting
Units
not connected.)
#0
Slave Rack
#1
16 pts.
IR 19
16 pts.
IR 15
16 pts.
IR 18
16 pts.
IR 14
16 pts.
IR 17
32 pts.
IR 12 & 13
16 pts.
IR 16
16 pts.
IR 11
16 pts.
IR 10
Slave #0
16 pts.
IR 22
16 pts.
IR 21
16 pts.
IR 20
Slave #1
C2000H
CPU Rack
C500 Expansion I/O Rack
C20, K-type
or P-type PC
Word Multiplier 2
16 pts.
IR 25
16 pts.
IR 24
16 pts.
IR 23
C20 I/O Link Unit
(32 pts.)
I/O Link Unit Set to 16 pts.
Terminator
Set words:
IR 30
IR 29
Allocated words:
IR 94 & 95
IR 93
C500 Expansion I/O Rack
*C20 I/O Link Unit
occupies 2 words.
IR 31 can therefore not be set.
Optical I/O Units
Terminator
Word Multiplier 1
16 pts.
IR 28
16 pts.
IR 27
16 pts.
IR 26
Set words:
IR 31 “H”
IR 30 L”
Allocated words:
IR 63 “H”
IR 62 “L”
Check to see that same word in not allocated twice.
Change word multiplier or word setting if necessary.
Because the I/O Units are assigned words starting at the lower end (word 00),
duplication can be avoided by starting the Optical I/O Unit words and I/O Link
Unit words from the upper end.
40
Section
I/O Word Allocation Examples
3-4
Do not use words being used for other I/O data. Do not combine input and output
words into one 16-point word. Two 8-point words (i.e., Optical I/O Units) composing one 16-point word must both be either input or output.
Example 6 C200H
System with C200H
Slaves
Although up to five C200H Slaves can be attached, this example shows only
four. Words 100 through 199 are allocated for Special I/O Units (High-speed
Counter Units and Position Control Units) on the Slave Racks.
Optical Fiber Cable (APF/PCF)
C200H Master
C200H CPU
Rack
C200H Slave
Rack
Set to unit number 0.
Set to C200H Master.
Slave #0
IR 4
IR 54
IR 3
IR 53
IR 2
IR 52
Master #0
IR 51
IR 0
IR 50
C200H Master
C200H Expansion I/O Rack
C200H Slave
Rack
Set to unit number 1.
Set to C200H Master.
Slave #1
IR 64
IR 14
IR 63
IR 13
IR 62
IR 12
IR 61
Master #1
IR 60
IR 10
C200H Slave
Rack
C200H Slave
Rack
Set to unit number 2.
Set to C200H Master.
Set as terminator. Cap
unused connector.
Slave #3
Slave #2
IR 84
IR 74
IR 83
IR 73
IR 82
IR 72
IR 81
IR 71
IR 80
IR 70
Set to unit number 3.
Set to C200H Master.
Set as terminator. Cap
unused connector.
Example 7 C200H
System with C200H
Slaves Connected to
Expansion I/O Racks
Although up to five C200H Slaves can be attached, this example shows only
four, i.e., two actual Slaves and two Expansion I/O Racks connected to Slaves
(which are also counted as Slaves). Words 100 through 199 are allocated for
Special I/O Units (High-speed Counter Units and Position Control Units) on the
41
Section
I/O Word Allocation Examples
3-4
Slave Racks. Expansion I/O Units are automatically allocated the words for the
next unit numbers after the one set for the Slave to which they are attached.
C200H Master
C200H CPU
Rack
C200H Slave Rack
Set to unit number 0.
Set to C200H Master.
Set as terminator. Cap
unused connector.
Slave #0
IR 4
IR 54
IR 3
IR 53
IR 2
IR 52
Master #0
IR 51
IR 0 I/O
IR 50
C200H Master
C200H Expansion I/O Rack
C200H Expansion I/O Rack
Automatically allocated words of unit
number 1.
IR 14
IR 13
IR 12
Master #1
IR 10
Slave #1
IR 64
IR 63
IR 62
IR 61
IR 60
C200H Expansion I/O Rack
C200H Slave
Rack
Set to unit number 3.
Set to C200H Master
Set as terminator. Cap
unused connector.
Automatically allocated words of unit
number 2.
Slave #3
42
Slave #2
IR 84
IR 74
IR 83
IR 73
IR 82
IR 72
IR 81
IR 71
IR 80
IR 70
Section
I/O Word Allocation Examples
Example 8 C200H
System with C500 Slaves
3-4
This example shows the maximum number of C500 Slaves that can be used in a
C200H System.
C200H Master
C200H CPU Rack
C500 Slave Rack
IR 4
IR 3
16 pts.
IR 2
IR 55
No unit
Master #0 or #1
32 pts.
IR 54 & 53
IR 0
32 pts.
IR 52 & 51
16 pts.
IR 50
Slave #0
Set as Slave #0.
C500 Slave Rack
Set as Slave #2
Set as terminator.
64 pts.
IR 75, 74, 73 & 72
16 pts.
IR 71
16 pts.
IR 70
Slave #0
43
Section
I/O Word Allocation Examples
Example 9 C200H System with Optical I/O Units
C200H Master
C200H CPU Rack
IR 4
IR 3
Master #0 or #1
Set as terminator
IR 1
IR 0
Set words
0 “L”
15 “H”
Actual words
200 “L”
215 “H”
Repeater Unit
3G5A2-RPT0
T-(P)E
32 units
Repeater Unit between
32nd and 33rd units.
16 “L”
31 “H”
216 “L”
231 “H”
32 max.
64 Units max.
Example 10 C200H System with I/O Link Unit Connection to Other PCs
Optical Fiber Cable (APF/PCF)
C200H Master
C200H CPU Rack
C500 CPU Rack
IR 4
I/O Link Unit 16 points input
16 point output
IR 3
Master #0 or #1
IR 1
Optical I/O Unit
I/O Unit
Optical I/O Units
IR 0
44
Set word
0 “L”
Actual word
200 “L”
1
201/202
3 “L”
3 “H”
203 “L”
203 “H”
3-4
Section
I/O Word Allocation Examples
3-4
Example 11 C200H System with I/O Link Unit Connection to Other PC and Optical I/O Units
C200H CPU
Rack
C200H Slave
Rack
C200H Slave
Rack
Set as Slave #0.
Set for C200H Master.
Set as Slave
#4.
Set for
C200H Master.
Slave #4
Slave #0
IR 4
IR 94
IR 3
IR 93
IR 53
IR 2
IR 92
IR 52
Master #1
IR 91
IR 51
Master #0
IR 90
IR 50
IR 54
C200H
Slave
Rack
C200H Expansion I/O Rack
Set as Slave #1.
Set for C200H Master.
Slave #1
IR 64
IR 14
IR 63
IR 13
IR 62
IR 12
IR 61
IR 11
IR 60
IR 10
C20, K-type
or P-type PC
C20 I/O Link Unit (32 points)
Set word:
C200H Expansion I/O Rack
0
Allocated words:
Automatically allocated
the words for Slave #2.
200 and 201
Slave #2
IR 74
IR 74
IR 72
Set as terminator.
Cap unused connector.
IR 71
IR 70
C200H Slave
Rack
Set word
3 “L”
2 “H”
2 “L”
Actual word
203 “L”
202 “H”
202 “L”
Set as Slave #3.
Set for C200H Master.
Set as terminator.
Cap unused connector.
Slave #3
IR 84
IR 83
IR 82
IR 81
IR 80
45
Section
I/O Word Allocation Examples
Example 12 C200H
Slaves Connected to
Other PCs
3-4
Masters other than the C200H do not have unit number settings. Words for all
Slaves attached to them are allocated automatically in the order they are
mounted.
Optical Fiber Cable (APF/ PCF)
C1000H CPU Rack
C200H CPU Rack
Set as Slave #0.
Set for Master
Other than C200H.
Slave #0
16 pts.
IR 20
IR 13
16 pts.
IR 19
IR 12
Master
IR 11
16 pts.
IR 8
IR 10
16 pts.
IR 7
IR 9
32 pts.
IR 6 & 5
64 pts.
IR 4, 3, 2, & 1
16 pts.
IR 0
C200H CPU Rack
Set as Slave #1.
Set for Master other than
C200H.
Set as terminator.
Cap unused connector.
Slave #1
IR 18
IR 17
IR 16
IR 15
IR 14
Note If a Unit with the blown-fuse detection function and alarm detection circuit
(C200H-OD411/213/214/OA221) is used on a C200H Slave Rack that is connected to a PC other than a C200H/C200HS, all 16 I/O points will be regarded as
outputs. Therefore, you will not be able to read the flags for blown-fuse detection
function and alarm detection circuit from the ladder program.
46
SECTION 4
Unit Components and Switch Settings
4-1
4-2
4-3
4-4
Remote I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Link Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optical I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47
Section
Remote I/O Units
4-1
4-1
Remote I/O Units
C120, C500, C1000H, and C2000H Systems
Masters
Slaves
Transmitting/Error indicator
Test OK indicator
Terminator Check indicator
Test switch
Optical connector
Either APF or PCF can be
connected to the optical connector on RM001-PEV1. Only
PCF can be connected to
RM001-EV1.
Transmitting/Error indicator
I/O Error indicator
Unit no./Terminator selector
(Remove the indicator cover to
gain access.)
Optical connector
Only one connector is provided on
3G2A5-RT001-(P)E. Either APF or
PCF can be connected to the optical connector on RT001-PE and
RT002-PEV1. Only PCF can be
connected to RT001-EV1 and
RT002-EV1.
RUN output terminals
Indicators
Unit
Master/Slave
Master
Slave
Indicator
Transmitting Error
Test OK
Function
Flashes during transmission. Lights during an error.
When performing a transmission test:
– Lights to indicate normal transmission.
– Remains unlit to indicate an error.
Testing is repeated as long as the switch is activated; the LED will go out at
any point an error occurs.
Terminator Check
Lights to indicate activation and then goes out to indicate that the terminator
has been located.
I/O Error
Lights to indicate an error in the I/O Bus at the Slave Unit or a mis-recognition
at the PC.
Switches and RUN Output Terminals
Unit
Master
Indicator
Test Switch
Function
Tests the transmission connections with the PC in PROGRAM mode. The
testing is repeated as long as the switch is act vated.
Slave
Unit No./Terminator
selector
Pins 1 and 2 set the unit number. Pin 4 sets the terminator. Pin 3 is not
used.
RUN output
RUN signal (Stays on during normal run or monitor time; goes off during
programming or an error.)
Model
3G2A6-RM001-(P)E for
C120
48
The 3G2A6-RM001-(P)E Remote I/O Master Unit is not housed in a case. The
housing for this Unit, called a “Remote I/O Rack,” must be specified separately
when ordering. The name and function of each part of this C120 Master are the
same as those of the C500 Master.
Section
Remote I/O Units
4-1
Remote I/O Rack
Display Window
Nameplate
Case screw
3G2C4-SI027-E (100 VAC)
Unit and Housing Assembly
Case screw
Display Window
Nameplate
Case screw
Board guide
C120 Master board
Board guide
Remote I/O Rack
49
Section
Remote I/O Units
4-1
C200H Remote I/O Master Unit C200H-RM001-PV1
XMT/RCV indicator
(transmitting, green)
END RS indicator
(terminator, red)
ERROR indicator (red)
Unit number selector
Optical connector
Indicators
Unit
XMT/RCV
(Transmitting)
Indicator
Unit #0 or #1
Function
Flashes if there is one or more Optical I/O Units or Slaves undergoing normal transmission.
Not lit if all Optical I/O Units and Slaves have errors or if an error occurs in the CPU refresh cycle.
Unit #2 or #3
Switches
Not lit if even one of the Optical I/O Units or Slaves in the transmission has an error or if an error occurs in the CPU refresh cycle.
Indicator
ERROR (Transmission error)
Function
Lights if even one of the Optical I/O Units or Slaves in the transmission has an error or if an error occurs in the CPU refresh cycle.
END RS (Terminator check)
Not lit if all of the Optical I/O Units or Slaves in the transmission
are normal. Is lit and remains so at the start of operation until a
terminator has been located.
Name
Unit No.
Function
Used to set the unit number (machine number) of the Master (set to 1 or 3 for #1 or
set to 0 or 2 for #2.) The system will not operate if two Masters are given the same
unit number or if undefined values are set. Unit numbers are used for AR error flags
(AR0014 and AR0015) and restart flags (AR0114 and AR0115). Either unit number
can be set when only one Master is used.
Note If numbers 0 or 1 are used to set the unit number (#0 and #1, respectively), transmission will continue even when transmission errors occur. If numbers 2 or 3 are
used (#0 and #1, respectively), all transmissions to Slaves will be stopped for
transmission errors.
50
Section
Remote I/O Units
4-1
C200H Slave Unit (C200H-RT001-P Shown Here)
RUN indicator (green)
XMT/RCV indicator
(transmitting, green)
POWER (green)
Fuses 250V 2 V MF51NR
(5.2 dia. X 20)
ERROR 1 indicator (red)
ERROR 2 indicator (red)
Power supply terminals
Dip switch
Optical connector cover
Note The optical connector is accessed by removing the cover. (Use a screwdriver to
open the cover if necessary.) Either APF or PCF cable can be connected. (Refer
to 5-2 Optical Fiber Cable.)
Always cap the unused connector if the Slave is the terminator.
C200H Slave Indicators
The operating conditions of C200 Slaves can be discerned from their indicators,
as shown in the following table.
XMT/RCV
Not lit.
ERROR 1
Not lit.
ERROR 2
Not lit.
RUN
Not lit.
Condition
System not
operating.
Function
Indicates that system check by Master is not
finished or that power is not being supplied.
Flashing.
Not lit.
–––
Not lit.
Lit.
Lit.
Not lit.
Not lit.
Lit.
--Not lit.
Not lit.
Normal trans.
Trans. error
I/O bus error
Indicates normal transmission with Master.
Indicates error in transmission with Master.
Indicates error in I/O bus connected to I/O Unit
on Slave.
Flashing.
Flashing.
Lit.
---
I/O verification
error
Indicates that configuration of I/O Units on
Slave has changed.
Flashing.
Lit.
Lit.
Not lit.
I/O setting error
Indicate that Slave Input and Output Units have
been reversed.
Flashing.
Lit.
Flashing.
---
I/O Rack not
verified
Indicates that an I/O Expansion Rack connected to the Slave via I/O Connecting Cable
has not been verified by the PC’s CPU.
Note “---” in the above table indicates that the stated condition can occur with the indicator either lit or not lit. See Section 7 Error Processing for corrective measures.
51
Section
I/O Link Units
C200H Slave Rack
4-2
The same Backplanes are used as for CPU Racks and Expansion I/O Racks.
See Appendix A for details.
Cap this connector.
It is not used.
I/O Connecting Cable connector
Used to connect Expansion I/O
Units. Cap when not used.
I/O Units and/or
Special I/O Units
4-2
Remote I/O Slave Unit
C200H-RT001-P
Slave mounting
screws (M4)
I/O Link Units
C500 I/O Link Unit
Rear View
Transmitting/Error indicator
Transmission points indicator
Word/Terminator selector (Remove
the indicator cover to gain access.)
Optical connector
Either APF or PCF can be
connected to the optical connector on LK010-PE. Only
PCF can be connected to
LK010-E.
Transmission points
selector
RUN output
Repeating terminals
Indicators
Indicator
Transmitting
Error
16 IN
16 OUT
Function
Blinks during transmission
Lights during an error
Appropriate LED lights to indicate the setting of the
Transmission Points selector on the back.
16 IN • 16 OUT
32 OUT
Switches
Terminals
52
Switch
Word/Terminator selector
Function
Set the number of words of the I/O Link Unit and
whether or not it is the terminator.
Transmission Points selector
Set the number of transmission points of the I/O
Link Unit.
Terminal
RUN output
Function
RUN signal (Stays on during normal run or monitor
time; goes off during programming or an error.)
Power ON output
Power ON signal (Stays on while the power of the
I/O Link Unit to the PC is on).
Section
I/O Link Units
C120 I/O Link Unit
4-2
The 3G2A6-LK010-(P)E I/O Link Unit is not housed in a case. The housing of
this Unit, called an “I/O Link Rack,” must be specified separately when ordering.
The name and function of each part of this C120 I/O Link Unit are the same as
those of the C500 Link Unit.
I/O Link Rack
Display Window
Nameplate
Mounting screw
3G2C4-SI023-E (100 VAC)
Unit and Housing Assembly
Case
mounting
screw
Display Window
Nameplate
Case mounting screw
Board guide
C120 I/O Link Unit
board
Board guide
I/O Link rack
53
Section
Optical I/O Units
4-3
C20 Link Unit
RUN Output
Stays ON during normal operating or
monitoring; goes OFF during programming or errors.
Repeater Output Terminal
Sends repeater signals to a Link Adapter.
The repeater output is ON when power is
ON in the CPU and I/O Link Unit.
Power Indicator
Lit when power is being supplied to
I/O Link Unit.
Transmission/Error Indicator
Flashes during normal transmission;
lights for transmission or bus error.
Optical Connectors
Either APF or PCF can be connected
to the LK011-P. Only PCF can be connected to the LK011
CPU/Expansion I/O Unit Connector
Connect to C20, K-type, or P-type
Connecting Cable (Cable varies with
PC).
AC power supply
Grounds
4-3
Optical I/O Units
Model number
POWER
TR/ERR indicator
Word selector (Remove indicator cover to gain access.)
I/O indicators
Optical connector
Either APF or PCF can be
connected to the optical
connectors on ‘‘–P” type
units. Only PCF can be
connected to other units.
Terminator terminals
RUN output
I/O terminals
Common terminal
Power terminals
Indicators
54
Indicator
POWER
TR/ERR
0 to 7
Function
Lights when the power is on.
Blinks during transmission. Lights during error.
Indicate the ON/OFF status of I/O points.
Section
Switch Settings
Switch
Switch
Word selector
Terminals
4-4
4-4
Function
Set to the Optical I/O Unit’s word.
Terminal
Function
Terminator setting
Short for terminator (the Unit at the end).
I/O Terminals, common
Terminals for I/O wiring (refer to each Unit’s specifications).
Power input terminals
Power supply terminals (refer to each Unit’s specifications).
Switch Settings
Switch Setting Order
Set the Units using the following procedure:
1, 2, 3...
Note
C120, C500, C1000H, and
C2000H Slaves
1. Turn off the power, set the unit numbers of the Slaves and check the last I/O
word being used by the PC. For a C1000H or C2000H System, always set
Slave unit numbers in order starting from number 0.
2. Set the Optical I/O Unit and the I/O Link Unit words so that no words are used
twice. Also, do not set more than the available number of words. This will
result in an I/O error.
3. Connect the optical fiber cables starting from the Master and working out to
the terminator. It does not matter which connector is used for the line from
the Master.
4. Set the terminator for the last Unit for each Master. Check to confirm that no
intermediate Units have been accidentally set as terminators.
5. Apply power to the System in any convenient order.
6. After the terminator check indicator on the Master goes out, enter the I/O
table through the Programming Console if required for your PC. If a terminator is not found, CPU WAIT’G will be displayed on the Programming Console. Once the I/O table has been entered, it is not necessary to re-enter it
each time power is turned on, unless there is a change.
7. After entering the I/O table, specify word multipliers for Masters if you are
using a C1000H or C2000H System.
1. Once the I/O table has been generated, it is retained in the memory even
while power is turned off.
2. If the System does not operate properly after following the above steps, refer to Section 7 Error Processing.
Be sure to set DIP switches with the power off. Remove the indicator panel, as
shown, and set the switch according to the following chart. Although the
3G2A6-RT001-(P)V1 is a special terminator unit (i.e., it has only one connector),
it must still be set as the terminator.
Unit Number and
Terminator Settings
ON
Dip
switch
1 2 3 4
2120 22
Terminator Setting
ON: Terminator
Unit no.
55
Section
Switch Settings
Unit no.
#0
#1
#2
#3
#4
#5
#6
#7
Pin 1
OFF
OFF
ON
ON
OFF
OFF
ON
ON
Pin 2
OFF
ON
OFF
ON
OFF
ON
OFF
ON
4-4
Pin 3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
C200H Master
C200H-RM001-P
Unit number
selector
The unit number is set to distinguish between Masters. The order of Master unit
numbers is not important. Always turn off the power supply to the PC before setting, and use a screwdriver to set the number. Do not set the same unit number
for more than one Master. Do not set values other than 0 through 3.
C200H Slave
C200H-RT001-P
Dip switch
56
Section
Switch Settings
4-4
Always turn off the power supply to the PC and to the Slave before setting. All
DIP switch positions are OFF when the Unit is delivered.
ON 1 2 3 4 5 6 7 8
Not used. (Leave OFF.)
Data Clear/Retain for
Transmission Errors
OFF: Data cleared.
ON: Data retained.
Master Connected
OFF: C200H
ON: All others
Terminator Setting
OFF: Not terminator
ON: Terminator
Unit Number Setting
Unit number
#0
#1
#2
#3
#4
#5
#6
#7
Pin 1
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Pin 2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
Pin 3
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Models
C120, C500
C120, C500, C200H
C120, C500, C200H,
C1000H, C2000H
Setting Example
ON 1 2 3 4 5 6 7 8
Unit number: 3
Set as terminator.
Master: C200H
Data cleared for transmission errors.
I/O Link Units
Be sure to set DIP switches with the power off. Remove the indicator panel, as
shown, and set the switches according to the following chart. Be sure to replace
the cover when finished. The appearance of the switch is the same for all Link
Units. The position of the switch for C500 I/O Links is shown below. It is located
behind the indicator cover on the C120 I/O Link Unit too. On the C20 I/O Link
Unit, the switch is located behind the cover on the side of the Unit.
57
Section
Switch Settings
4-4
Word and Terminator Setting
DIP Switch Settings
Word Setting
Terminator Setting
ON
1 2 3 4 5 6
DIP switch
16 8 4 2 1
Word “H”/“L”
ON : “H”
The sum of the
switches set to ON determines the word
number. Set words in
reverse order from
word 31. In a C200H
System, the actual
word number will be
200 greater than the
set value.
Example: Setting IR 27 and terminator (Actually IR 227 in C200H System)
ON
1 2 3 4 5 6
16 8
2 1
Set position 6 ON.
Set pins 1, 2, 4, and 5 ON to set word 27
= (16 + 8 + 2 + 1).
58
Section
Switch Settings
Transmission Points
Setting
4-4
Set the switch on the rear panel as shown in the following chart. This switch does
not exist on the C20 I/O Link Unit.
Switch
Back
Operation
ON
ON
1 2 3 4
1 2 3 4
16-point input
1 to 4: OFF
DIP switch
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
16-point output
4:
ON
1 to 3: OFF
16-point input
16-point output
2 & 3: ON
1 & 4: OFF
32-point output
2 to 4: ON
1:
OFF
Optical I/O Units
Be sure to set DIP switches with the power off. Remove the indicator panel, as
shown, and set the switch according to the following chart.
Word and Terminator Setting
DIP Switch Settings
Word Setting
Terminator Setting
ON
1 2 3 4 5 6
DIP switch
16 8 4 2 1
Terminator setting
ON: Terminator
The sum of the
switches set to ON determines the word
number. Set words in
reverse order from
word 31. In a C200H
System, the actual
word number will be
200 greater than the
set value.
59
Section
Switch Settings
4-4
Example: Setting Word 29 “H” and terminator (Actually word 229 in C200H System)
ON
1 2 3 4 5 6
16 8 4
1
Set position 6 ON.
Set pins 1, 2, 3, and 5 ON to set word 29
= (16 + 8 + 4 + 1).
Terminator
Terminator
Short-circuit terminals 0
and 1.
60
SECTION 5
System Installation
5-1
5-2
5-3
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1-1 Masters and Slaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1-2 I/O Link Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1-3 Optical I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1-4 CPU, Slave, and Expansion I/O Racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optical Fiber Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3-1 C200H Slave Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3-2 C20 I/O Link Unit Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
Section
Dimensions
5-1
Dimensions
5-1-1 Masters and Slaves
C120 and C500 (Unit: mm)
Master
34.5
170*
34.5
93
Slave
150*
93
250
250
*With optical fiber cable
connected
*With optical fiber cable
connected
Remote I/O Rack for C120 (Unit: mm)
350
340
120110
100
62
5-1
Section
Dimensions
5-1
C200H Master (Unit: mm)
117
35
Rack
100.5
130
Approx. 140
Terminal Dimensions (Unit: mm)
M3.5
3 Max.
7.3
C200H Slave Racks (Unit: mm)
8-slot Rack
M4 screws
130
135
118
421
6.5
117
7.5
435
145*
* Dimension with 16-point/12-point I/O Units
5-slot Rack
M4 screws
130
135
118
6.5
316
330
7.5
117
145*
* Dimension with 16-point/12-point I/O Units
63
Section
Dimensions
3-slot Rack
M4 screws
130
135
118
246
6.5
117
7.5
145*
* Dimension with 16-point/12-point I/O Units
260
Mounting Dimensions (Unit: mm)
L ± 0.2
130
M4 screws
Backplane only
118 ± 0.2
A
Backplane
Backplane
C200H-BC031
C200H-BC051
C200H-BC081
Type
3-slot
5-slot
8-slot
L
246
316
421
A
260
330
435
5-1-2 I/O Link Units
C500 I/O Link Unit (Unit: mm)
3G2A5-LK010-(P)E
34.5
150*
93
250
*With optical fiber cable
connected
64
5-1
Section
Dimensions
5-1
C120 I/O Link Rack (Unit: mm)
350
340
120110
100
C20 I/O Link Unit
Two M4 holes
Mounting Hole Dimensions
110 ± 0.2
I/O
Link
Unit
120
230 250
2-M4
65
Section
Optical Fiber Cable
5-2
5-1-3 Optical I/O Units
(Unit: mm)
170*
35
Two M4
holes
100
250
242 ± 0.5
*With optical fiber cable
connected
5-1-4 CPU, Slave, and Expansion I/O Racks
250
150
A
B
100
The figure above illustrates an 8-slot Rack. The 5-slot and 3-slot Racks are similar except that the length varies with the number of slots. Lengths, in millimeters,
for all three models are given in the table below.
Backplane
3G2A5-BC081
C500-BL061
3G2A5-BC051
C500-BL041
C500-BL031
5-2
Type
8-slot
6-slot
5-slot
4-slot
3-slot
A
465
290
360
220
185
B
480
305
375
235
200
Optical Fiber Cable
Plastic-clad Optical Fiber (PCF) and All-plastic Optical Fiber (APF) cable can be
used for the communication lines of the Optical Remote I/O System. APF cable
has the following features and functions. Use of APF cable is recommended if
the transmission distance is 20 m or less. Quartz crystal cable can also be used
by incorporating Link Adapters into the System to transmit up to 3 km. Refer to
the Link Adapter Operation Manual for details.
Features and Functions
Low Cable Cost
All-plastic optical fiber and optical connectors are less expensive than other optical fibers, reducing cable cost.
66
Section
Optical Fiber Cable
5-2
Easy Processing and Installation
Because the user can attach connectors to the plastic optical fiber cables, cables can be laid first and then the connectors can be attached, allowing optimum
adjustment of cable length to eliminate wasted cable. This ease of handling also
ensures quick recovery in the event of cable breakage.
Transmission Distance Extendible to 200 m
PCF cable can also be connected to APF Units to extend the transmission distance to up to 200 m.
Cable
Plastic optical fiber (APF)
Plastic-clad optical fiber (PCF)
For all-plastic optical fiber
20 m max.
200 m max.
Unit
For plastic-clad optical fiber
Cannot be connected
800 m max.
Note The above transmission distances can be extended by using a Link Adapter. For
details, refer to the Link Adapter manual.
Using APF Units
The model names of APF Units are the same as those of corresponding PCF
Units, except for the suffix “-P” added to APF Units. APF Units are identical to
corresponding PCF Units in appearance, including the shape of the optical connectors. APF cable cannot be connected to PCF Units; PCF cable must be used
to connect an APF Unit to a PCF Unit. Refer to Plastic Optical Fiber Cable Specifications for APF cable assembly and handling.
A complete list of Optical Fiber Units is available in Appendix A Standard Models.
Types of Cable
The following three optical fiber cables can be used in an Optical Remote I/O
System as listed below. Operating conditions are different for each of these cables.
Fiber
Application
All-plastic (APF)
For short-distance transmission and indoor use
Plastic-clad (PCF)
For medium-distance transmission
Applicable Units
Those with suffix “-P”
All. Distance differs with
Unit
Transmission distance (max.)
20 m
“-P” Units 200m
Remarks
Available from OMRON
Non“-P” Units 800m
Available from OMRON
User must assemble connectors
W/connectors
Refer to cable specifications for handling instructions.
Notes on Handling
Optical Fiber Cable
Be sure to attach the protective cap to the unused optical connector of the Unit
specified as the terminator. This cap is supplied as an accessory to protect the
module from external light interference. Although the optical fiber cable is designed to provide sufficient mechanical strength, never allow heavy objects to
fall onto it.
When installing the optical fiber cable with connectors, secure, on a stable block,
the portion of the cable immediately before the connector so that the weight of
the cable is not pulling on the connector.
Always hold on to the connector when attaching or removing the cable; do not
pull or push directly on the cable.
The optical connector can be connected in one direction only. When connecting,
be sure to insert the connector up to the locking position.
Be careful not to soil the edges of the optical connectors. Attach the protective
caps the connectors whenever the connectors are not in use. When the connec-
67
Section
Wiring
5-3
tors have become dirty, lightly wipe them with clean tissue paper or cotton (moisten with ethyl alcohol if necessary to remove dirt). Do not, however, use any organic solvents other than ethyl alcohol.
The minimum bending radius is 25 mm for APF cable; 15 mm for PCF cable.
Never use the cable bent at a small radius.
The total length of all cables in the system must not exceed 10 km.
3G5A2-PF002 All-Plastic Fiber Cable requires either Optical Connector A
(when the cable length is 10 m or less) or Optical Connector B (when the cable
length ranges from 8 to 20 m) per transmission line. These connectors are supplied in pairs. The optical connectors for APF Cable must be assembled by the
user.
Notes on Ordering and
Assembling APF Cables
5-3
Wiring
5-3-1 C200H Slave Terminals
C200H-RT001-P
Fuse
AC input
Power supplied at either 100 to 120 VDC
or 200 to 240 VDC
Use enclosed device to short for 100 V
Voltage switch power supply. When using 200 V power
Shorted: 100 V supply verify that circuit is open.
Open: 200 V
LG
Connect to independent ground to reduce
noise interference and prevent shock.
Connect to independent ground to prevent shock.
Use to power DC Input Units. Use a sepa24-VDC output rate power supply if exceeding 3.0 A. If
–
0.3 A
3.0 A is exceeded, PC may detect error
and stop operation.
GR
+
+
RUN output
ON in RUN mode. Use for accessing signals from PC in RUN mode.
Note Be sure to use a wire of at least 1.25 mm2 in thickness.
Use M3.5 screws for tightening crimp terminals.
Use round crimp terminals for wiring. Do not connect bare stranded wires directly to terminal blocks.
! Caution
Tighten the terminal block screws of the AC Power Supply to a torque of
0.8 NSm. Loose screws may result in burning or malfunction.
Note Make sure that the 2-piece connector on the terminal block, shown below, clicks
into place when attaching it, indicating that the lock lever is in place.
Lock lever
Lock lever
68
Section
Wiring
5-3
C200H-RT002-P
+
Fuse
24 VDC
Use a 24 VDC power supply.
–
NC
NC
Connect to independent ground to reduce
noise interference and prevent shock.
LG
*
GR
NC
Connect to independent ground to prevent shock.
NC
(There is no 24-VDC output.)
RUN output
ON in RUN mode. Use for accessing signals from PC in RUN mode.
* The LG and GR terminals are connected
internally.
Note
1. Be sure to use a wire of at least 1.25 mm2 in thickness.
Use M3.5 screws for tightening crimp terminals.
Use crimp terminals for wiring. Do not connect bare stranded wires directly
to terminal blocks.
Tighten the terminal block screws to a torque of 0.8 NSm.
2. Make sure that the 2-piece connector on the terminal block, shown below,
clicks into place when attaching it, indicating that the lock lever is in place.
Lock lever
Lock lever
69
Section
Wiring
5-3-2 C20 I/O Link Unit Terminals
RUN output
Repeater output (Used only when connected to Link Adapter.)
M4 screws
8.6 max.
Link Adapter
8.6 max.
Optical fiber connector
M4 screws
70
Power supply
(100 to 240 VAC)
5-3
SECTION 6
I/O Response Times
6-1
6-2
6-3
6-4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C500 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C1000H and C2000H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C200H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
71
Section
C500 Systems
6-1
6-2
Introduction
The time required to produce a programmed output to an input within a Remote
I/O System varies with the scan time of the PC, the transmission time of the Remote I/O System, and the timing of the input.
The processing that determines and the methods for calculating maximum and
minimum response times from input to output are provided in this subsection.
Calculations assume that both the input and the output are located on Slave
Racks in a Remote I/O System.
Although more precise equations are possible if required, equations used for the
following calculations do not consider fractions of a scan.
In looking at the following timing charts, it is important to remember the sequence in which processing occurs during the PC scan, particular that inputs will
not produce programmed actions until the program has been executed.
Input on
Slave Rack
Output on
Slave Rack
X
When calculating the response times involving inputs and outputs from another
CPU connected by an I/O Link Unit, the scan time of the controlling CPU and the
scan time of the PC to which the I/O Link Unit is mounted must both be considered.
! Caution
6-2
Noise may increase I/O delays.
C500 Systems
With C500 Remote I/O Systems, both the scan time of the PC and the transmission time required by the Remote I/O System need to be considered in computing the I/O response times.
Remote I/O Transmission
Times
The remote I/O transmission time is computed as follows:
TRM
= Total Slave transmission time for one Master
=
TRT =
=
ΣTRT + TTT
Transmission time for each Slave
1.4 ms + (0.2 ms x n)
Where n = number of I/O words on the Slave Rack
TTT
=
Optical I/O Unit transmission time
=
0.2 ms x m
Where m = number of Optical I/O Units
Minimum I/O Response
Times
The minimum response time occurs when all signals are processed as soon as
they are received, meaning only one scan is required to execute the program
before the output is made.
Time = Input ON delay + scan time + TRM + output ON delay
Maximum I/O Response
Times
The maximum response time occurs when the input just misses both the first
remote I/O transmission and the program execution portion of the scan, meaning that processing must wait for the next transmission and then the next scan.
Time = Input ON delay + scan time x 2 + TRM x 2 + TRT + output ON delay
Example Computations
72
Calculations would be as shown below for input and output ON delays of 10 ms
and a scan time of 20 ms. This example uses only one Slave Rack connected to
Section
C1000H and C2000H Systems
6-3
a Master and four words allocated on the Slave Rack. Because there is only one
Slave, TRM and TRT are the same.
TRT =
1.4 + (0.2 x 4) = 2.2 ms
TRM =
2.2 ms
Minimum I/O Response Time
Time = 10 ms + 20 ms + 2.2 ms + 10 ms
= 42.2 ms
Maximum I/O Response Time
Time = 10 ms + (20 ms x 2) + (2.2 ms x 2) + 2.2 ms + 10 ms
= 66.6 ms
Transmission Time for
Remote I/O Errors
6-3
The above computations assume that there is no remote I/O error (including
power interruptions). If an error occurs for a Slave, the response time would be
increased by 20 ms for each Slave connected to the same Master as the Slave
where the error occurred. If an error occurs for a Optical I/O Unit, the overall delay time would be increased by 5 ms for each Optical I/O Unit connected to the
same Master as the Optical I/O Unit where the error occurred.
C1000H and C2000H Systems
With C1000H and C2000H Remote I/O Systems, both the scan time of the PC
and the transmission time required by the Remote I/O System need to be considered in computing the I/O response times.
Remote I/O Transmission
Times
The remote I/O transmission time is computed as follows:
TRM
= Total Slave transmission time for one Master
=
TRT =
=
ΣTRT + TTT
Transmission time for each Slave
1.4 ms + (0.2 ms x n)
Where n = number of I/O words on the Slave Rack
TTT
=
Optical I/O Unit transmission time
=
0.2 ms x m
Where m = number of Optical I/O Units
Minimum I/O Response
Times
The minimum response time occurs when all signals are processed as soon as
they are received. Because remote I/O processing is handled in parallel with
program execution, two scans are required so that the program is executed.
Time = Input ON delay + scan time x 2 + TRM + output ON delay
Maximum I/O Response
Times
The maximum response time occurs when the input just misses both the first
remote I/O transmission and the program execution portion of the scan, meaning that processing must wait for the next transmission and then the next (i.e.,
the third) scan.
Time = Input ON delay + scan time x 3 + TRM x 2 + TRT + output ON delay
Example Computations
Calculations would be as shown below for input and output ON delays of 10 ms
and a scan time of 20 ms. This example uses a C1000H system with only one
Slave Rack connected to a Master and four words allocated on the Slave Rack.
Because there is only one Slave, TRM and TRT are the same.
TRT =
1.4 + (0.2 x 4) = 2.2 ms
TRM =
2.2 ms
Minimum I/O Response Time
Time = 10 ms + 20 ms x 2 + 2.2 ms + 10 ms
= 62.2 ms
73
Section
C200H Systems
6-4
Maximum I/O Response Time
Time = 10 ms + (20 ms x 3) + (2.2 ms x 2) + 2.2 ms + 10 ms
= 86.6 ms
Transmission Time for
Remote I/O Errors
6-4
The above computations assume that there is no remote I/O error (including
power interruptions). If an error occurs for a Slave, the response time would be
increased by 20 ms for each Slave connected to the same Master as the Slave
where the error occurred. If an error occurs for a Optical I/O Unit, the overall delay time would be increased by 5 ms for each Optical I/O Unit connected to the
same Master as the Optical I/O Unit where the error occurred.
C200H Systems
With C200H Remote I/O Systems, only the scan time of the PC needs to be considered in computing the I/O response times as long as the remote I/O transmission time is negligible and smaller than the scan time. The scan time, however, is
increased by the presence of the Remote I/O System.
Scan Time
The scan time for Remote I/O Systems is increased by the following amount for
each Master (approx.):
1.3 ms + 100 µs x (number of 8-pt. Units controlled through the Master + (number
of 16-pt. Units controlled through Master x 2)) + α
Where,
α = 200 µs x number of words used by Special I/O Units
A more detailed explanation of scan time operation and calculations is available
in the PC Operation Manual.
Minimum I/O Response
Times
The minimum response time occurs when all signals are processed as soon as
they are received. Here, three scans are required so that the program is executed.
Time = Input ON delay + scan time x 3 + output ON delay
Maximum I/O Response
Times
The maximum response time occurs when the input just misses the program execution portion of the scan, meaning that processing must wait for the next transmission and then the next (i.e., the fourth) scan.
Time = Input ON delay + scan time x 4 + output ON delay
Example Computations
74
Calculations would be as shown below for input and output ON delays of 10 ms
and a scan time of 20 ms. This example uses only one Slave Rack connected to
a Master and four words allocated on the Slave Rack.
Minimum I/O Response Time
Time = 10 ms + 20 ms x 3 + 10 ms
= 80 ms
Maximum I/O Response Time
Time = 10 ms + 20 ms x 4 + 10 ms
= 100 ms
SECTION 7
Error Processing
7-1
7-2
7-3
Self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1-1 C120, C500, C1000H, and C2000H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1-2 C200H Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SR and AR Area Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locating Transfer Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
Section
Self-diagnosis
7-1
7-1
Self-diagnosis
C-series Systems have self-diagnostic features to aid in the event of an error.
These features are divided into hardware diagnosis and system diagnosis. In
either case, the error message or FAL number is read through the Programming
Console. Some errors are also monitored by SR bits and can be programmed for
indication by an external alarm. The SR bits can also be programmed to stop PC
operation in the event of specific errors. Refer to the Troubleshooting Charts on
the following pages.
7-1-1 C120, C500, C1000H, and C2000H Systems
The following tables are in pairs. The first one of each pair classifies the errors
according to Programming Console displays and CPU LEDs. The second one of
each pair provides details on possible causes and corrections according to Remote I/O Unit LEDs.
Errors Before Operation
Programming Console Display
Error
Error code
SR bits
CPU Waiting
CPU LEDs
Power: lit
Waiting for remote power
--For Transfer error in I/O bus.
not lit
Run:
LEDs on Master
Trans/
Error
flash
Test
OK
--
Slave LEDs
Terminator
check
Trans/
Error
lit
--
I/O
error
--
6112 ON (other than C1000H, C2000H)
25312 ON (C1000H, C2000H)
Optical I/O
Unit LEDs
I/O
Link
Unit
LEDs
Power
Trans/
Error
Trans/
Error
--
--
--
Cause
Remote I/O Unit power OFF
Correction
Apply power to the Unit
I/O bus line break
lit
--
--
--
--
--
--
--
No terminator
lit
--
--
--
lit
--
--
--
Transfer error in I/O bus
Check settings beginning with
terminator and check word settings.
flash
--
--
not lit
not lit
lit
not lit
not lit
Remote I/O bus error
Check Remote I/O Units.
not lit
not lit
not lit
--
--
--
--
--
Remote I/O Unit error
Replace Master.
flash
--
--
--
--
lit
--
--
Slave unit number error
Correct Slave unit number setting.
Non-fatal Errors
Programming Console Display
Error
Error code
SR bits
Remote I/O err
Remote I/O errors
B0 to B3 (other than C1000H, C2000H) B0 to B7 (C1000H, C2000H)
For all Remote I/O errors
6112 ON (other than C1000H, C2000H)
25312 ON (C1000H, C2000H)
CPU LEDs
Power: lit
Alarm:
LEDs on Master
Trans/
Error
lit
Test
OK
--
Slave LEDs
Terminator
check
Trans/
Error
--
lit
I/O
error
--
lit
Optical I/O
Unit LEDs
I/O
Link
Unit
LEDs
Power
Trans/
Error
Trans/
Error
lit
lit
lit
Cause
Transfer error in I/O bus
I/O bus line break
lit
76
--
--
not lit
not lit
--
not lit
not lit
Remote power OFF or CPU error
Correction
Refer to 7-2 SR and AR Area
Flags to locate the error. The
System will automatically be restored upon correcting the error.
Section
Self-diagnosis
LEDs on Master
Trans/
Error
Test
OK
Slave LEDs
Terminator
check
Trans/
Error
Optical I/O
Unit LEDs
I/O
error
I/O
Link
Unit
LEDs
Power
Trans/
Error
Trans/
Error
Cause
Correction
lit
--
--
--
lit
--
--
--
Remote I/O bus error
Check Slave Racks.
not lit
not lit
not lit
--
--
--
--
--
master error
Replace Master.
Programming Console Display
Error
Error code
SR bits
I/O VER ERR
I/O verification error
E7
For all I/O verification errors
CPU LEDs
Power: lit
Alarm:
LEDS on Master
Trans/
Error
Test
OK
Terminator
check
--
--
--
Slave LEDs
I/O
error
Power
--
--
--
6110 ON (other than C1000H, C2000H)
25310 ON (C1000H, C2000H)
lit
Optical I/O
Unit LEDs
Trans/
Error
7-1
I/O
Link
Unit
LEDs
Trans/
Error
Trans/
Error
--
--
Cause
Slave Rack Unit loose or an I/O
Unit has been added. Non-remote
I/O word and Optical I/O Unit word
settings overlap.
Correction
Verify I/O Table with the Programming Console and correct
I/O settings.
Fatal Errors
Programming Console Display
Error
Error code
SR bits
CPU LEDs
LEDs on Master
Trans/
Error
Test
OK
I/O SET ERR
I/O Setting error
E0
None
Power: lit
Slave LEDs
Terminator
check
Trans/
Error
Run:
not lit
Error:
lit
Optical I/O
Unit LEDs
I/O
error
I/O
Link
Unit
LEDs
Power
Trans/
Error
Trans/
Error
Cause
--
--
--
--
lit
--
--
--
Remote I/O Input and Output
Units have been reversed.
--
--
--
--
--
--
--
--
Optical I/O Unit input and output
words combined.
Correction
Verify I/O Table with the Programming
g
g Console and correct
I/O Units
U it or I/O Table.
T bl
Note If the same Unit number is assigned to more than one Slave or the same data
word is set for I/O points of several Optical I/O Units, data contention occurs on
the I/O bus, causing transmission errors. Transmission errors are also caused
by external light interference if protective caps are not attached to unused connectors.
7-1-2 C200H Systems
Lighting and flashing of the Master XMT/RCV LED depends on the unit number
settings of the Master. For Masters #0 and #1, if any of the Masters involved in
77
Section
Self-diagnosis
7-1
transmission has an error, the LED will flash. If all such Units have errors, the
LED will go out. For Masters #2 and #3, all transmission will stop and the LED will
go out if even one Unit has an error.
I/O verification errors and I/O setting errors occur when an I/O table is used or
when the power supply to a Slave is turned off and I/O Unit settings are changed
during CPU operation.
Condition
Prior to
system
operation
Error
END
RS
Master not
detected
not lit
not lit
not lit
Remote I/O
errors
not lit
not lit
not lit
lit
Too many I/O
points
Remote
I/O
System
operation
failure
C200H Master LEDs
XMT/
RCV
78
Cause
Correction
---
CPU doesn’t
detect the Master.
Master not mount
properly or CPU
error.
Check mounting of Master;
turn power back ON. If error
cannot be cleared, replace
Master.
---
---
Optical Remote
I/O Unit power
OFF or I/O bus
line broken.
Terminator not set.
Turn on power to the Slaves
and connected Units. Check
optical fiber cables. Set the
Unit farthest removed from
Master as the terminator.
lit
lit
not lit
Slave I/O bus
error.
Replace faulty unit.
---
---
---
not lit
Transmission error Check optical fiber cables.
in I/O bus.
Error
1
Error
2
---
---
---
lit
---
---
lit
---
RUN
not lit
lit
not lit
not lit
---
---
not lit
Same word
multiplier used for
more than one
Master.
Check word multipliers and
correct any that are
redundant
flash
not lit
not lit
flash
---
---
not lit
Same unit number
assigned more
than once.
Check AR02 through AR06
for the redundant unit
numbers and correct them.
flash
not lit
not lit
not lit
not lit
not lit
not lit
Slave not verified.
Check Slave unit numbers
and turn power back ON.
Then, turn CPU power
supply back ON or restart
Master.
flash
lit
flash
---
Expansion I/O
Unit connected via
I/O connecting
cable not recognized by CPU.
Check I/O Connecting
Cable connections. Check
I/O Expansion Rack words
and the system
configuration. If an I/O table
is being used, reference it
on the Programming
Console, and restore the
system configuration or
recreate the I/O table.
not lit
not lit
not lit
not lit
I/O bus line break
or CPU error.
Check optical fiber cable. If
the cause is removed,
recovery will be automatic.
Otherwise replace unit.
Transmission
Error
not lit
lit
not lit
not lit
I/O bus
transmission line
break or error.
I/O bus error
flash
lit
lit
not lit
Slave I/O bus
error.
Check all Slaves and Slave
Racks. Replace faulty units.
I/O
verification
error
flash
flash
lit
---
I/O Unit on Slave
Rack removed or
added.
Reference the I/O table on
the Programming Console,
and reset I/O or recreate
the I/O table.
I/O setting
error
flash
lit
lit
not lit
Input and Output
Units reversed on
Slave Rack.
Reference the I/O on the
Programming Console, and
restore the I/O Unit word
allocations
Transmission
error
not lit
lit
not lit
not lit
Transmission line
shorted.
Check optical fiber cables.
Slave not
confirmed
Expansion
I/O Rack not
confirmed
Remote
I/O error
(after
starting
system)
C200H Slave LEDs
XMT/
RCV
Remote I/O
System
operation
failure
flash/
lit
lit
not lit
Section
SR and AR Area Flags
7-2
7-2
SR and AR Area Flags
The following tables show how to monitor errors using SR and/or AR bits.
SR Bits in C120 or C500
Bit No. 15 14
13
12
11
10
9
8
7
6
5
4
3
Word 59
2
1
O
O
0
Error Check bit
Remote I/O Error flag
Error Location
Remote I/O Unit
Optical I/O Unit
I/O Link Unit
Bits 8 to 15
B0 to B3
00 to 31
00 to 31
Definition
Bits 4 to 7
Indicates the
Master by mounting location.
B0 is the leftmost
Master on the
Rack.
8
Refers to the Optical
I/O Unit word
number.
0
Refers to the I/O
Link Unit word
number.
0, 1
0
1
1
Definition
Indicates a failure
in the Master.
Indicates a failure
in Slave #0.
Indicates a failure
in Slave #1.
Indicates an even
word.
Indicates an odd
word.
Indicates a failure in the I/O
Link Unit.
The Error Check bit can be turned ON and OFF to read errors when they have
occurred in more than one Unit.
The Remote I/O Error flag indicates that an error has occurred in one of the Remote I/O Units.
79
Section
SR and AR Area Flags
7-2
SR Bits in C1000H and C2000H
Bit No. 15 14
13
12
11
10
9
8
7
6
5
4
3
Word 251
2
1
O
O
0
Error Check bit
Remote I/O Error flag
Error Location
Bits 8 to 15
Remote I/O Unit
B0 to B7
Optical I/O Unit
I/O Link Unit
00 to 31
00 to 31
Bits 4 to 7
Definition
Definition
The codes (Remote Nos.) on the
right are assigned
to Masters on
CPU or Expansion I/O Rack
from the lowest
word.
0 to 7
Indicates unit
number of Slave
with error. (#0 to
#7)
8
Indicates a failure
in Master.
Indicates word allocated to Optical
I/O Unit.
0, 2,
4, 6
Indicates “L”
word.
0
2
4
6
Multiplier 0
Multiplier 1
Multiplier 2
Multiplier 3
1, 3,
5, 7
Indicates “H”
word.
1
3
5
7
Multiplier 0
Multiplier 1
Multiplier 2
Multiplier 3
Indicates word allocated to I/O Link
Unit.
0, 1
2, 3
4, 5
6, 7
Multiplier 0
Multiplier 1
Multiplier 2
Multiplier 3
The Error Check bit can be turned ON and OFF to read errors when they have
occurred in more than one Unit.
The Remote I/O Error flag indicates that an error has occurred in one of the Remote I/O Units.
Note The number of the word to which an Optical I/O Unit or I/O Link Unit is actually
assigned is calculated using the following formula.
Word no. = (Word no. listed in the above table) + (Word multiplier listed in the
above table x 32)
SR and AR Bits in C200H
C200H Error Numbers
and Restart Flags
80
AR 0014 and AR 0015
AR 02
AR 03 through AR 06
Unit number of Master with error
Unit number of Slave with error at beginning of operations
Optical I/O Unit word numbers with errors at beginning of
operations
SR 251
Unit numbers and word numbers of all Remote I/O Units with
errors after beginning of operations
Bit No.
AR 0014
AR 0015
AR 0114
AR 0115
Function
ON for error in Master #1.
ON for error in Master #0.
Restart bit for Master #1.
Restart bit for Master #0.
Section
SR and AR Area Flags
7-2
To restart after removing the cause of an error, turn the Restart bit ON and then
OFF again.
SR Word 251 Contents
Bit No. 15 14
13
12
11
10
9
8
7
6
5
4
3
Word 251
2
1
O
O
0
Error Check bit
Remote I/O Error flag.
Error Location
Bits 8 to 15
Definition
Bits 4 to 7
Definition
Remote I/O Unit
B0 to B1
Indicates the unit
number of the
Master.
0 to 4
Indicates the Unit
number of the
Slave.
Optical I/O Unit
00 to 31
Indicates word no.
of Optical I/O Unit.
0
Indicates “L” word.
1
Indicates “H” word.
0, 1
Either indicate
the I/O Link
Unit.
I/O Link Unit
00 to 31
Indicates words
no. set on I/O Link
Unit.
The Error Check bit can be turned ON and OFF to read errors when they have
occurred in more than one Unit. The Remote I/O Error flag indicates that an error
has occurred in one of the Remote I/O Units.
Slaves numbered 0 through 4 are allocated 10 words each in order from 50
through 99, i.e., 50 through 59, 60 through 69, etc.
Optical I/O Unit and I/O Link Unit word numbers are 200 greater than the number
actually set.
Unit Numbers and Word Numbers with Errors at Beginning of Operations
Slaves
The following Error flags go ON for duplication in Slave unit numbers or transmission errors at the beginning of operations.
Flag
AR 0200
AR 0201
AR 0202
AR 0203
AR 0204
Optical I/O Units
Slave unit number
0
1
2
3
4
The following error flags for Optical I/O Units go ON for word duplication in words
set for Optical I/O Units.
81
Section
SR and AR Area Flags
Word
AR 03
AR 04
82
Bit
AR 0300
Unit
0 “L”
AR 0301
Word
7-2
Bit
AR 0500
Unit
16 “L”
0 “H”
AR 0501
16 “H”
AR 0302
1 “L”
AR 0502
17 “L”
AR 0303
1 “H”
AR 0503
17 “H”
AR 0304
2 “L”
AR 0504
18 “L”
AR 0305
2 “H”
AR 0505
18 “H”
AR 0306
3 “L”
AR 0506
19 “L”
AR 0307
3 “H”
AR 0507
19 “H”
AR 0308
4 “L”
AR 0508
20 “L”
AR 0309
4 “H”
AR 0509
20 “H”
AR 0310
5 “L”
AR 0510
21 “L”
AR 0311
5 “H”
AR 0511
21 “H”
AR 0312
6 “L”
AR 0512
22 “L”
AR 0313
6 “H”
AR 0513
22 “H”
AR 0314
7 “L”
AR 0514
23 “L”
AR 0315
7 “H”
AR 0515
23 “H”
AR 0400
8 “L”
AR 0600
24 “L”
AR 0401
8 “H”
AR 0601
24 “H”
AR 0402
9 “L”
AR 0602
25 “L”
AR 0403
9 “H”
AR 0603
25 “H”
AR 0404
10 “L”
AR 0604
26 “L”
AR 0405
10 “H”
AR 0605
26 “H”
AR 0406
11 “L”
AR 0606
27 “L”
AR 0407
11 “H”
AR 0607
27 “H”
AR 0408
12 “L”
AR 0608
28 “L”
AR 0409
12 “H”
AR 0609
28 “H”
AR 0410
13 “L”
AR 0610
29 “L”
AR 0411
13 “H”
AR 0611
29 “H”
AR 0412
14 “L”
AR 0612
30 “L”
AR 0413
14 “H”
AR 0613
30 “H”
AR 0414
15 “L”
AR 0614
31 “L”
AR 0415
15 “H”
AR 0615
31 “H”
AR 05
AR 06
Section
SR and AR Area Flags
7-2
Using Flags to Locate Errors
C120, C500
CPU Rack
16 pts.
32 pts.
Slave #0
Slave Rack
IR 7
32 pts.
IR 12 & 13
IR 10 & 11
IR 5 & 6
32 pts.
64 pts.
IR 1, 2, 3, & 4
16 pts.
IR 9
16 pts.
IR 0
16 pts.
IR 8
Slave Rack
Slave #1
IR 30 “L”
IR 30 “H”
IR 31 “L”
IR 31 “H”
Optical I/O Units
16 pts.
IR 19
16 pts.
IR 18
64 pts..
IR 14, 15, 16, & 17
In the System depicted above, let’s assume an error has occurred in IR 31 “L” of
the Optical I/O Unit. Word 59 shows the following data.
Locating the Error
Bit No. 15 14
Word 59
O
O
3
13
12
11
10
9
8
1
1
O
O
O
1
1
7
O
6
5
4
3
2
1
0
O
O
O
1
O
O
O
0
8
Monitoring word 59 with the Programming Console reveals the following data.
Indicates a remote I/O error.
Indicates transfer I/O word 031 “L”.
83
Section
SR and AR Area Flags
7-2
To check for other errors, monitor 5900 and force-set the System. This causes
the next error word to be displayed.
Incremented one by the Error Check bit.
Indicates transfer I/O word 31 “H”.
To read the next error, reset the Error Check bit, then set it again. If the leftmost
Master has an error, the following message is displayed. Errors in the Remote
I/O Units cannot be read is there is an error in the Master.
Master number
This is an example program to stop PC operation if an error occurs in the Unit
assigned to word 31 “L.”
5903
MOV(21)
59
Remote I/O Error flag turns ON when there is an
error.
The first step is thus to move IR 59 to DM 000.
DM 000
5900
The next error is read and its word number displayed. If there is not another error, the data
will be all 0s.
ANDW(34)
#FFF0
Bits 0 to 3 are masked.
DM 000
DM 000
CMP(20)
DM 000
#3100
Data in DM 000 (i.e., content of IR 59 with
bits 0 to 3 masked) is compared with
#3100.
6306
FALS(07)
01
END(01)
84
If data matches, there is an error in word 31
“L”, and the CPU stops.
Section
SR and AR Area Flags
7-2
C1000H, C2000H
C1000H or C2000H CPU
Rack
Optical I/O
Units
Master
16 pts.
IR 5
16 pts.
IR 4
32 pts.
IR 2 & 3
16 pts.
IR 1
16 pts.
IR 0
Slave Rack
Slave #0
Multiplier #0
32 pts.
IR 8 & 9
16 pts.
IR 7
16 pts.
IR 6
Set Word
IR 31 “H”
IR 30 “H”
Allocated Word
IR 31 “H”
IR 30 “L”
Expansion I/O Rack
Optical I/O Units
Master
Multiplier #1
16 pts.
IR 12
16 pts.
IR 11
16 pts.
IR 10
Set Word
IR 31 “H”
IR 30 “H”
Allocated IR
IR 63 “H”
IR 62““L”
In the System depicted above, let’s assume an error has occurred in IR 62 “L” of
the Optical I/O Unit (IR 30 “L” of Master with a word multiplier of 1). IR 251 shows
the following data.
Locating the Error
Bit No. 15 14
IR 251
O
O
3
13
12
11
10
9
8
1
1
O
O
O
0
0
7
O
6
5
4
3
2
1
0
O
1
O
1
O
O
O
2
8
Monitoring IR 251 with the Programming Console reveals the following data.
Indicates a remote I/O error.
Indicates transfer I/O word 030 “L” on rack #1 (Word 62 “L”).
85
Section
SR and AR Area Flags
7-2
To check for other errors, monitor 25100 and force-set the System. This causes
the next error IR to be displayed.
Incremented one by the Error Check bit.
Indicates transfer I/O IR 31 “H” of Master
with a word multiplier of 1 (Wd 63 “H”).
To read the next error, reset the Error Check bit and then set it. If the leftmost
Master has an error, the following is displayed. Errors in the Remote I/O Units
cannot be read if there is an error in the Master.
Master number
This is an example program to stop PC operation if an error occurs in the Unit
assigned to IR 62 “L” (IR 30 “L” of Master with a word multiplier of 1).
25103
MOV(21)
251
Remote I/O Error flag turns ON when there is an
error.
The first step is thus to move IR 251 to DM 0000.
DM 0000
25100
The next error is read and its IR number displayed. If there is not another error, the data
will be all 0s.
ANDW(34)
#FFF0
Bits 0 to 3 are masked.
DM 0000
DM 0000
CMP(20)
DM 0000
# 3020
Data in DM 0000 (i.e., the content of IR 251
with bits 0 to 3 masked) is compared with
#3020.
25506
FALS(07)
01
END(01)
86
If data matches, there is an error in IR 62
“L”, and the CPU stops.
Section
SR and AR Area Flags
7-2
C200H
C200H CPU Rack
C200H Slave
Rack
Slave #0
IR 7
IR 6
IR 54
IR 5
IR 53
IR 4
IR 52
Master #0
IR 51
IR 2
IR 50
Optical I/O
Units
Set Word
1 “H”
0 “L”
IR 1
Allocated Word
201 “H”
200 “L”
IR 0
C200H Slave
Rack
Expansion I/O Rack
Slave #1
Optical I/O
Units
Master #1
IR 13
IR 64
IR 63
IR 12
IR 62
IR 11
IR 61
IR 10
IR 60
Set Word
IR 31 “H”
IR 30 “H”
Allocated Word
231 “H”
230 “L”
Locating the Error
In the System depicted above, let’s assume an error has occurred in IR 230 “L” of
the Optical I/O Unit. IR 251 shows the following data:
Bit No. 15 14
IR 251
O
O
3
13
12
11
10
9
8
1
1
O
O
O
O
0
7
O
6
5
4
3
2
1
0
O
0
O
1
O
O
O
0
8
Monitoring IR 251 with the Programming Console reveals the following data.
Indicates Remote I/O error.
Indicates IR 30 “L” setting (Wd 230 “L” allocation).
87
Section
SR and AR Area Flags
7-2
To check for other errors, monitor 25100 and force-set the System. This causes
the next error word to be displayed.
Incremented one by the Error Check bit.
Indicates word 31 “H” setting (Wd 231 “H” allocation).
To read the next error, reset the Error check bit and then set it. If the leftmost
Master has an error, the following is displayed. Errors in the Remote Units cannot be read if there is an error in the Master.
Indicates Remote I/O error.
Indicates IR 30 “L” setting (Wd 230 “L” allocation).
This is an example program to stop PC operation if an error occurs in the Unit
assigned to IR 230 “L” (IR 30 “L” setting of 1).
25103
MOV(21)
251
Remote I/O Error flag turns ON when there is an
error.
The first step is thus to move IR 251 to DM 0000.
DM 0000
25100
The next error is read and its IR number displayed. If there is not another error, the data
will be all 0s.
ANDW(34)
#FFF0
Bits 0 to 3 are masked.
DM 0000
DM 0000
CMP(20)
DM 0000
# 3000
Data in DM 0000 (i.e., the content of IR 251
with bits 0 to 3 masked) is compared with
#3000.
25506
FALS(07)
01
END(01)
88
If data matches, there is an error in IR 62
“L”, and the CPU stops.
Section
Locating Transfer Errors
7-3
7-3
Locating Transfer Errors
Before Terminator
Acknowledgment
The Transmitting/Error indicator may indicate an error before the Terminator
Check indicator goes off. If it does, the line may be disconnected or the power to
one of the Units in the line may be off. To locate the problem, set the Unit just
before the end as the terminator and test the System again. Continue moving the
terminator up one Unit at a time until the Master is able to acknowledge a terminator. This will let you know what section of the line the problem is in. Check the
power supply and data transfer line connections for that section and test the System again.
The problem is here.
Terminator check
is successful with
this Unit set as
the terminator.
Terminator check
is not successful
with this Unit set
as the terminator.
Original
terminator
Slave, I/O Link Unit, or Optical I/O Unit
After Terminator
Acknowledgment
Check the Transmitting/Error indicator of each Unit in the line to determine
where the error has occurred. The problem can then be corrected by repairing
the transfer line between the last Unit with the Transmitting/Error indicator flashing, indicating normal transmission, and the first Unit with the Transmitting/Error
indicator lit, indicating an error.
The problem is here.
Transmitting/Error
indicator flashing
Transmitting/Error
Transmitting/Error
indicator flashing
indicator lit.
Transmitting/Error
indicator flashing
Slave, I/O Link Unit, or Optical
I/O Unit
89
Appendix A
Standard Models
Remote I/O Units, I/O Link Units, and Optical I/O Units are available as either APF or PCF units. The model names
of APF Units are the same as those of corresponding PCF Units except for the suffix “-P” added to APF Units. APF
Units are identical to corresponding PCF Units in appearance, including the shape of the optical connectors.
These types differ from each in the optical fiber cable they can use and the transmission distances they allow. A
complete description of these differences can be found in 5-2 Optical fiber Cable under the heading Transmission
Distances.
When connecting these two types of Units to each other, be sure to use plastic-clad optical fiber cable (PCF).
Masters and Slaves
Name
Specifications
For C500, C1000H, C2000H
Master
For C120
C120 Remote I/O Rack
Slave
APF/PCF
PCF
APF/PCF
PCF
APF/PCF
For C200H
For mounting Remote I/O 100 VAC Master
For C500,
w/1 optical connector (APF/PCF)
C1000H, C2000H w/2 optical connectors (APF/PCF)
w/1 optical connector (PCF)
w/2 optical connector (PCF)
For C200H
Internal power supply
100 to 120 or
APF/PCF
200 to 240 VAC
24 VDC
C500 Slave Backplane
For C500, C1000H, C2000H Slave Racks
Model number
3G2A5-RM001-PEV1
3G2A5-RM001-EV1
3G2A6-RM001-PE
3G2A6-RM001-E
C200H-RM001-PV1
3G2C4-SI027-E
3G2A5-RT001-PEV1
3G2A5-RT002-PEV1
3G2A5-RT001-EV1
3G2A5-RT002-EV1
C200H-RT001-P
C200H-RT002-P
C500-BL061
C500-BL041
C500-BL031
C200H Backplane
C200H I/O Power Supply
For CPU,, Expansion I/O,, or Slave Rack
10-slot
8-slot
5-slot
3-slot
Voltage switchable between 100 to 120 and 200 to 240 VAC
24 VDC
C200H-BC101-V2
C200H-BC081-V2
C200H-BC051-V2
C200H-BC031-V2
C200H-PS221
C200H-PS211
C200H I/O Connecting Cable
Length:
Length:
Length:
Length:
Length:
30 cm
70 cm
2m
5m
10 m
C200H-CN311
C200H-CN711
C200H-CN221
C200H-CN521
C200H-CN131
91
Appendix A
Standard Models
I/O Link Units
Unit
I/O Link Unit
Specifications
For C500, C1000H, C2000H PCs
C120 I/O Link Rack
C20 I/O Link Unit
Connecting Cable
For mounting I/O Link Unit
For P-type and K-type PC
For C20
APF/PCF
PCF
100 VAC
70 cm
5 cm
32 cm
70 cm
Model number
3G2A5-LK010-PE
3G2A5-LK010-E
3G2C4-SI023-E
C20P-CN711
3G2C7-CN501
3G2C7-CN311
3G2C7-CN711
Optical I/O Units
Unit
Optical I/O
U i
Unit
(APF/PCF)
Optical I/O
U i (PCF)
Unit
Specifications
Model number
No-voltage contact input
AC/DC input
AC input
Relay contact output
Transistor output
Triac output
No-voltage contact 10 mA
12 to 24 VAC/DC 10 mA
100 VAC 10 mA
250 VAC/24 VDC 2 A
12 to 48 VDC 0.3 A
100/200 VAC 1 A
8 pts.
8 pts.
8 pts.
8 pts.
8 pts.
8 pts.
100 VAC
power supply
l
No-voltage contact input
AC/DC input
AC input
No-voltage contact 10 mA
12 to 24 VAC/DC 10 mA
100 VAC 10 mA
200 VAC 10 mA
250 VAC/24 VDC 2 A
12 to 48 VDC 0.3 A
100/200 VAC 1 A
8 pts.
8 pts.
8 pts.
8 pts.
8 pts.
8 pts.
8 pts.
100 VAC
l
power supply
Relay contact output
Transistor output
Triac output
3G5A2-ID001-PE
3G5A2-IM211-PE
3G5A2-IA121-PE
3G5A2-OC221-PE
3G5A2-OD411-PE
3G5A2-OA222-PE
100/200 VAC
power supply
l
100/200 VAC
power supply
3G5A2-ID001-E
3G5A2-IM211-E
3G5A2-IA121-E
3G5A2-IA221-E
3G5A2-OC221-E
3G5A2-OD411-E
3G5A2-OA222-E
100/200 VAC
l
power supply
Link Adapters and Repeater Units
Name
Link Adapter
Repeater Unit
Specifications
Optical (APF/PCF), 3 connectors
Optical (APF/PCF), RS-422, RS-232C 1 connector each
RS-422, 3 connectors
Optical (PCF), 3 connectors
Optical (PCF), RS-422, RS-232C 1 connector each
For more than 32 Remote I/O Slaves in an Optical Remote I/O System APF/PCF
PCF
Model number
3G2A9-AL002-PE
3G2A9-AL004-PE
3G2A9-AL001
3G2A9-AL002-E
3G2A9-AL004-E
3G5A2-RPT01-PE
3G5A2-RPT01-E
All Plastic Optical Fiber Cable (APF)
Name
Plastic fiber optical cable
Specifications
Cable only (w/o optical connector). Order in units of 5 m for
cables 5 to 100 m long. For longer cables, order in units of 200
or 500 m.
Model number
3G5A2-PF002
Optical connector A
With 2 optical connectors (brown) For plastic optical fiber cable
10 m long or shorter
3G5A2-CO001
Optical connector B
With 2 optical connectors (black) For plastic optical fiber cable
8 to 20 m long
3G5A2-CO002
Plastic optical fiber set
1 m cable with optical connector A attached on both ends
3G5A2-PF101
92
Appendix A
Standard Models
Plastic-Clad Optical Fiber Cable (PCF)
Name
Cable for indoor
use
Cable for both
indoor and outdoor
use
Specification
Operating
g
temperature: –10°
to 70°C
0.1 m w/connector
1 m w/connector
2 m w/connector
3 m w/connector
5 m w/connector
10 m w/connector
20 m w/connector
30 m w/connector
40 m w/connector
50 m w/connector
10 to 500 m,
w/connector
(specify cable
length in units of
1 m when
ordering)
510 to 800 m,
w/connector
(specify cable
length in units of
1 m when
ordering)
Operating
temperature: –10°
to 70°C
Model number
3G5A2-OF011
3G5A2-OF101
3G5A2-OF201
3G5A2-OF301
3G5A2-OF501
3G5A2-OF111
3G5A2-OF211
3G5A2-OF311
3G5A2-OF411
3G5A2-OF511
3G5A2-OF002
Operating
temperature: 0° to
55°C (must not be
exposed to
sunlight)
Note 1. Optical cable cannot be connected as easily as ordinary wire for breaks or extensions; carefully determine lengths when placing your order.
2. Fiber length L (m)
Length L (m)
93
Appendix B
Specifications
Ratings
Conforms to the SYSMAC C-series PCs.
Common Characteristics
Transmission
Communication
Transmission speed
Transmission delay
Time-sharing, multiplexing cyclic system
Half-duplex
187.5 kbps
16 ms/128 bits.
Transmission Distances
Unit
Plastic optical fiber (APF)
Plastic-clad optical fiber
(PCF)
For all-plastic optical fiber
20 m max.
200 m max.
For plastic-clad optical fiber
Cannot be connected
800 m max.
C120, C500, C1000H, and C2000H Remote I/O Master and Slave Units
Item
Transmission points
RUN output
Internal power supply
Weight
Master
512 pts. max. (including Special I/O Units)
None
Slave
512 max. (including Special I/O Units)
Contact output (closed during operation)
5 VDC 750 mA max.
500 g max.
Contact capacity: 2 A 250 VAC (cosine of
phase angle = 1) 2 A 24 VDC
5 VDC, 550 mA max.
500 g max.
C200H Remote I/O Master Units
Transmission words
Slave Racks: 50 words
Internal power supply
Weight
Optical I/O Units and I/O Link Units: 32 words
5 VDC, 200 mA max.
350 g max.
C200H Remote I/O Slave Units
Slave
Power supply
C200H-RT001-P
100 to 120/200 to 240 VDC (switchable) 24 VDC
50/60 Hz
C200H-RT002-P
Allowable voltage variation
24-VDC output terminal
Power consumption
Weight
RUN output
85 to 132/170 to 264 VDC
20.4 to 26.4 VDC
24 VDC +10%/–20%, 0.3 A max.
(not applicable)
100 VA max.
80 W max.
1.3 kg max.
1.3 kg max
Contact output: 1a contact
Contact capacity: 250 VAC, 2 A (cosine of phase angle=1) 0.5A (cosine of phase angle=0.4)
24 VDC, 2 A
Power output
Transmission bits
5 VDC, 3 A (2.7 A actually supplied to I/O Units)
10 words per Slave
95
Appendix B
Specifications
C120 and C500 I/O Link Units
Transmission bits
External outputs
32 bits (max.)
Switch-selectable settings
16 input
16 output
16 input, 16 output
32 output
RUN output
SPST-NO output (Model G6B)
Contact capacity: 2 A (max.)
Repeater output
SPST-NO output (Model G6B), for repeater signal
Internal power supply
5 V, 600 mA max
Weight
500 g max.
C20 I/O Link Units
Transmission bits
External outputs
32 bits
16 input, 16 output
RUN output
SPST-NO output (Model G6B)
Contact capacity: 2 A (max.)
Repeater output
SPST-NO output (Model G6B), for repeater signal
Supply voltage
Operating voltage range
Power consumption
Insulation resistance
100 to 120/200 to 240 VAC 50/60 Hz
85 to 132/ 170 to 264 VAC
15 VA max.
10 MΩ min. (at 500 VDC) between AC terminals and
housing
Dielectric strength
2,000 VAC 50/60 Hz for 1 minute (between AC terminals and housing)
Noise immunity
1,000 V p-p, pulse width: 100 ns to 1 µs, rise time: 1
ns
Vibration
10 to 35 Hz, 2 mm double amplitude, in X, Y, and Z
directions, 2 hours each
Shock
Ambient temperature
Environment
Humidity
Grounding
Structure
Weight
Dimensions
98 m/s2 in X, Y, and Z directions, 3 times each
Operating: 0° to 55°C; Storage: –20° to 65°C
No corrosive gas
35% to 85% (without condensation)
Less than 100 Ω
IEC IP-30 (mounted in a panel)
1 kg max.
120 (W) x 250 (H) x 43 (D)
Optical I/O Units
Transmission bits
RUN output
Power supply voltage
Weight
96
8 bits (max.)
Contact output,SPST-NO (Model G6B)
(closed during operation)
Contact capacity: 250 VAC
2 A (cosine of phase angle=1)
(C200H: 0.5 A (cosine of phase angle = 0.4))
24 VDC, 2 A
Refer to each Unit’s specifications.
Appendix B
Specifications
No-voltage Contact Optical Input Units
Item
Input voltage
Input impedance
Input current
ON delay time
OFF delay time
No. of circuits
ON voltage
OFF voltage
Power supply voltage
Power consumption
Weight
3G5A2-ID001-(P)E
No-voltage contacts
---
10 mA typical.
10 ms max.
15 ms max.
8 pts. (per common)
-----
100 VAC 50/60 Hz
25 VA max.
580 g max.
1.1 kΩ
2.2k
3.9 kΩ
IN
00
IN
01
IN
02
1.1 kΩ
2.2k
3.9 kΩ
Internal Circuit
IN 07
COM
RUN
output
0
Shorted: Terminator
Open: Other units
1
2
RUN output
3
0
Terminator
setting
1
Power indicator
2
AC input
(100 VAC)
Power
circuit
3
4
1A
250 VAC
5
Word
selector
6
4
5
6
7
8
9
10
7 11
COM
12
13
Transmitting/ Error indicator
14
Power source (100 VAC)
Circuit Configuration
Terminal Connections
97
Appendix B
Specifications
AC/DC Optical Input Units
Item
Input voltage
Input impedance
Input current
ON delay time
OFF delay time
No. of circuits
ON voltage
OFF voltage
Power supply voltage
Power consumption
Weight
3G5A2-IM211-(P)E
12 to 24 VAC/DC +10%/–15%
1.8 kΩ
10 mA typical (at 24 VDC)
10 ms max.
15 ms max.
8 pts. (per common)
10.2 VDC min.
3.0 VDC max.
100 VAC 50/60 Hz
20 VA max.
580 g max.
1.8kΩ
IN
00
IN
01
IN
02
6.8kΩ
1.8kΩ
IN
07
6.8kΩ
Internal Circuit
COM
RUN
output
0
Shorted: Terminator
Open: Other units
1
2
RUN output
3
0
Terminator
setting
Power indicator
Power
circuit
AC input
(100 VAC)
1A
250 VAC
1
2
3
+
4
12 to 24
VAC
5
Word
selector
6
7
COM
4
5
6
7
8
9
10
11
12
13
Transmitting/
Error indicator
14
Power source (100 VAC)
Circuit Configuration
98
Terminal Connections
Appendix B
Specifications
AC Optical Input Units
Item
Input voltage
Input impedance
Input current
ON delay time
OFF delay time
No. of circuits
ON voltage
OFF voltage
Power supply voltage
Power consumption
Weight
3G5A2-IA121-(P)E
100 VAC +10%/–15% 50/60 Hz
9.7 kΩ (50 Hz)
8 kΩ (60 Hz)
10 mA typical (at 100 VAC)
10 ms max.
15 ms max.
8 pts. (per common)
60 VAC min.
20 VAC max.
100 VAC 50/60 Hz
20 VA max.
580 g max.
330Ω 0.33 µF
IN
00
330Ω
IN
01
IN
02
6.8k
330Ω 0.33 µF
IN 07
330Ω
6.8k
Internal Circuit
COM
(100
VAC)
RUN
output
0
Shorted: Terminator
Open: Other units
1
2
RUN output
3
0
Terminator
setting
Power indicator
1
2
Power
circuit
AC input
(100 VAC)
3
4
1A
250 VAC
100 VAC
5
Word
selector
6
7
COM
4
5
6
7
8
9
10
11
12
13
Transmitting/
Error indicator
14
Power source (100 VAC)
Circuit Configuration
Terminal Connections
99
Appendix B
Specifications
AC Optical Input Units
Item
Input voltage
Input impedance
Input current
ON delay time
OFF delay time
No. of circuits
ON voltage
OFF voltage
Power supply voltage
Power consumption
Weight
3G5A2-IA221-(P)E
200 VAC +10%/–15% 50/60 Hz
22 kΩ (50 Hz)
18 kΩ (60 Hz)
10 mA typical (at 100 VAC)
10 ms max.
15 ms max.
8 pts. (per common)
120 VAC min.
40 VAC max.
100 VAC 50/60 Hz
20 VA max.
600 g max.
910Ω
0.15 µF
IN
00
1MΩ
IN
01
IN
02
6.8k
910Ω
0.15 µF
IN 07
1MΩ
Internal Circuit
6.8k
COM
(200
VAC)
0
Shorted: Terminator
Open: Other units
1
2
RUN output
RUN
output
3
0
Terminator
setting
Power indicator
1
2
AC input
(100 VAC)
Power
circuit
1A
250 VAC
3
(200
VAC)
4
5
6
Word
selector
4
5
6
7
8
9
10
7 11
COM
12
13
Transmitting/
Error indicator
14
Power source (100 VAC)
Circuit Configuration
100
Terminal Connections
Appendix B
Specifications
Contact Optical Output Units
Item
Max. switching capacity
3G5A2-OC221-(P)E
Resistive: 2 A 250 VAC (cosine of phase angle = 1) 2 A 24 VDC
Inductive: 0.5 A 250 VAC (cosine of phase angle = 0.4)
100 mA 5 VDC
15 ms max.
15 ms max.
8 pts. (per common)
Electrical: 300,000 operations (resistive load) 100,000 operations (inductive load)
Min. switching capacity
ON delay time
OFF delay time
No. of circuits
Service life
Mechanical: 50,000,000 operations
Power supply voltage
Power consumption
Weight
100/200 VAC 50/60 Hz
20 VA max.
600 g max.
OUT 00
Internal Circuit
OUT 01
OUT 02
OUT 07
Internal Circuit
COM
0
Shorted: Terminator
Open: Other units
1
2
RUN
output
RUN output
L
Terminator
setting
Power indicator
L
L
AC input
(100/200
VAC)
Power
circuit
1A
250 VAC
3
L
250 VAC
+
24 VDC max
L
L
Word
selector
L
0
1
2
3
4
5
6
7
L
COM
4
5
6
7
8
9
10
11
12
13
Transmitting/
Error indicator
14
Power source (100/200 VAC)
Circuit Configuration
Terminal Connections
101
Appendix B
Specifications
Triac Optical Output Units
Item
Max. switching capacity
Min. switching capacity
Leakage current
Saturation voltage
ON delay time
OFF delay time
No. of circuits
Fuse capacity
Power supply voltage
Power consumption
Weight
3G5A2-OA222-(P)E
100/200 VAC +10%/–15%, 1 A 50/60 Hz
10 mA, 100 VAC
3 mA max. (at 100 VAC)
1.2 V max.
1 ms max.
Max. 1/2 of load frequency
8 pts. (per common)
250 V, 5 A
100/200 VAC 50/60 Hz
20 VA max.
600 g max.
OUT 00
22Ω
1.022 µF
OUT 01
OUT 02
OUT 07
22Ω
1.022 µF
Fuse
Internal Circuit
COM
0
Shorted: Terminator
Open: Other units
1
2
RUN
output
RUN output
3
L
Power indicator
Terminator
setting
L
L
AC input
(100/200
VAC)
Power
circuit
1A
250 VAC
L
L
100/200
VAC
L
Word
selector
L
0
1
2
3
4
5
6
7
L
COM
4
5
6
7
8
9
10
11
12
13
Transmitting/
Error indicator
14
Power source (100/200 VAC)
Circuit Configuration
102
Terminal Connections
Appendix B
Specifications
Transistor Output Units
Item
Max. switching capacity
Min. switching capacity
Leakage current
Saturation voltage
ON delay time
OFF delay time
No. of circuits
Fuse capacity
Power supply voltage
Power consumption
Weight
3G5A2-OD411-(P)E
12 to 48 VDC +10%/–15%, 0.3 A
---
100 µA max.
1.5 V max.
0.2 ms max.
0.3 ms max.
8 pts. (per common)
Fuse not provided.
100/200 VAC 50/60 Hz
20 VA max.
600 g max.
OUT 00
OUT 01
OUT 02
OUT 07
Internal Circuit
COM
0
Shorted: Terminator
Open: Other units
RUN
output
Power indicator
2
RUN output
L
L
AC input
(100/200 VAC)
1A
250 VAC
3
L
Terminator
setting
Power
circuit
1
L
12 to 48
VDC
+
L
L
Word
selector
L
0
1
2
3
4
5
6
4
5
6
7
8
9
10
L 7 11
COM
12
13
Transmitting/Error indicator
14
Power source (100/200 VAC)
Circuit Configuration
Terminal Connections
103
Appendix C
Power Supply Wiring Precautions
Voltage Drop
If the wiring distance for the power supply to a Slave Rack in a SYSMAC BUS Remote I/O System is too long, there
will be a voltage drop that may result in the power supply becoming insufficient for the Slave Rack load. Design the
system so that a stable power supply can be provided for all Slave Racks.
Slave Rack Power Supply
Cable conductor resistance and line current will cause voltage drops in the cables used for supplying power to
Slave Racks. In the kind of system shown below, the current consumption for the Slave Rack load, as well as its
internal current consumption, will add to the line current and further contribute to a voltage drop. Use cable sizes
and wiring distances so that final voltages for all Slave Racks will stay within the allowable voltage variation
ranges.
24-VDC
power
supply
Internal current
consumption
Cable conductor Load current
resistance
consumption
G730
Slave Rack
Load
Perform wiring so that a stable operating voltage that is sufficient
for every load in the system can be provided.
Resistance of Other Devices
In systems where devices such as circuit protectors, contactors, connectors, and fuses are used between Racks,
the internal and contact resistances of the devices will also contribute to voltage drop (in addition to the voltage
drop caused by cable conductor resistance). Allow for these resistances when designing the system.
Circuit protector, breaker, etc.
24-VDC
power
supply
Cable conductor
resistance
Connector
Contact resistance
of relays or contactors
Slave Rack
Slave Rack
Perform wiring so that
a stable operating
voltage that is sufficient for every load in
the system can be
provided.
Note The conductor resistance and allowable current of cables will vary with their cross-sectional area, material,
structure, and the ambient temperature. Select cables for the system after confirming the cable specifications in the relevant catalogs.
105
Appendix C
Power Supply Wiring Precautions
Power Supply Arrangement
Supplying Power for I/O Altogether
When designing systems where power is supplied for all I/O from the same power supply, it is necessary to consider the power consumption for each load and each Rack’s internal power consumption. Use cable sizes so that
voltages for all loads and Racks in the system will stay within the allowable voltage variation ranges.
24-VDC
power
supply
Cable conductor
resistance
G730
G730
G730
Perform wiring so that
a stable operating
voltage that is sufficient for every load in
the system can be
provided.
Load
Load
Load
Load
Arranging I/O Power Supply
When deciding whether to supply power for I/O from just one point or several points, observe the points below.
Several Power Supplies
When using more than one power supply, the power supplies can be placed at various points in the system (rather
than grouping all the power supplies together) to reduce line current, and consequently, the voltage drop.
One Power Supply
When using only one power supply, observe the following points to limit voltage drop and thereby keep the voltage
within the allowable range:
• Use sufficiently thick cables.
• Raise the output voltage of the power supply.
• Make the wiring distances as short as possible.
Power Failures
It is necessary to decide how the system should operate in the event of a power failure. Choose one of the following:
• A system where all operation is stopped if one power supply fails.
• A system where operation can be continued in the event of a power failure in one power supply, by the provision
of several power supplies at various points in the system.
Cost
When designing a system, also consider factors that will affect the overall cost, such as the number of power supplies, the thickness and length of cables, and wiring costs.
106
Appendix D
Using the C200H-RM001-PV1 with
CS1-series PCs
Memory Allocation
When using the C200H-RM001-PV1 Master Unit with a CS1-series PC, there are differences in memory allocation
for the following areas (details given in Data Configuration below):
• SYSMAC BUS Area
• Optical I/O Unit and I/O Terminal Area.
Data Configuration
SYSMAC BUS Area (Slave Rack Allocation)
The SYSMAC BUS Area contains 50 words with addresses ranging from CIO 3000 to CIO 3049. Each C200H
Slave Rack is allocated 10 words based on the Rack’s rack number (No. 0 to 4). From these 10 words, one word
(16 bits) is allocated to each slot in the Slave Rack from left (i.e., from the slot furthest away from the Slave) to right.
Allocations are fixed by slot, i.e., if there is no Unit in a slot, the word normally allocated to that slot will not be used.
Note 1. The words are allocated according to rack numbers even when two Master Units are being used.
2. If C500 Slaves (C500-RT201) are used, they are allocated twice the number of words allocated to
C200H Slaves (20 words). Any two non-consecutive numbers between 0 and 3 can be set as rack numbers in this case.
Allocated words
Rack number
0
CS1
CIO 3000 to CIO 3009
C200H/HX/HG/HE/HS
IR 050 to IR 059
1
CIO 3010 to CIO 3019
IR 060 to IR 069
2
CIO 3020 to CIO 3029
IR 070 to IR 079
3
CIO 3030 to CIO 3039
IR 080 to IR 089
4
CIO 3040 to CIO 3049
IR 090 to IR 099
Optical I/O Unit and I/O Terminal Area (Allocation for Slaves other than
Slave Racks)
The Optical I/O Unit and I/O Terminal Area contains 32 words with addresses ranging from CIO 3100 to CIO 3131.
Each Slave is allocated 1 word based on its unit number setting (0 to 31) except for Optical I/O Units, which are
allocated 2 words each.
Note The words are allocated according to unit numbers even when two Master Units are being used.
Allocated words
Unit number
0
CIO 3100
CS1
C200H/HX/HG/HE/HS
IR 200
1
CIO 3101
IR 201
to
to
to
31
CIO 3131
IR 231
Note When there are two Masters mounted to the CPU Rack, make settings so that the same words are not allocated to two different Slaves.
107
Appendix D
Using the C200H-RM001-PV1 with CS1-series PCs
Related Flags in Auxiliary Area (AR Area and SR Area)
CS1
Description
p
Name
SYSMAC BUS
Error Flag
(Non-fatal error)
Address
A40205
SYSMAC BUS
Master Error Flags
A40500 to
A40501
Slave Number of
A42504 to
SYSMAC Bus Error A42506
After Startup
A42504
only
A42508 to
A42515
SYSMAC BUS
Slave Number
Refresh Bit
A50900
ON when an error occurs in a data transfer in
the SYSMAC BUS system. The number of the
Master involved is indicated with bits A40500
and A40501.
When a transmission error occurs in the
SYSMAC BUS system, the flag for the affected
Master Unit will be turned ON.
A40500: Flag for Master Unit #0
A40501: Flag for Master Unit #1
Corresponding
p
g flag
g in
C200H/HX/HG/HE/HS
SR 25312
SR 25104 to SR 25115
When there is an error in a Slave Rack, these
bits contain the Slave’s unit number.
AR 0200 to AR 0204 (Slave Rack
Error Flags)
Each flag corresponds to a rack
number (0 to 4)
When there is an error in an Optical I/O Unit
SR 25103 (Remote I/O Error Flag)
(excluding Slave Racks), the status of A42504
The status of the flags in AR 03 to
(0 or 1) indicates whether the unit is high or low. AR 06 indicate whether the unit is
high or low.
When there is an error in a Slave Rack, this byte AR 0015: Flag for Master Unit #0
contains the 2-digit hexadecimal unit number of AR 0014: Flag for Master Unit #1
the Master to which the Slave is connected.
(0xB0 for Master Unit 0, 0xB1 for Master Unit 1)
When there is an error in an Optical I/O Unit, this AR 03 to AR 06
byte contains the 2-digit hexadecimal unit
Each flag corresponds to a unit
number (00 to 1F, or 0 to 31 decimal).
number and letter (L or H).
Turn this bit ON to refresh the error information
in A425 (unit number of Slave where error
occurred after startup).
SR 25100
CIO Area Allocation
The CIO Area is not used.
DM Area Allocation
The DM Area is not used.
Settings and Operation
Initial Settings (Hardware Settings)
• Mount a Master to a CS1 CPU Rack, a C200H Expansion I/O Rack, or a CS1 Expansion Rack. (Do not mount to a
SYSMAC BUS Slave Rack.) In a basic system, up to two Masters can be mounted. There are no restrictions on
the mounting position.
• Using the unit number selector on the front side of the Master, set the Master unit number and specify whether to
continue or stop operation in the event of a transmission error.
• For each Slave Rack, set the rack number, set whether to clear or retain data during transmission errors, and set
the type of Master connected.
• Set the unit number for each Remote I/O Unit.
• Wire the system using 2-core cable or optical fiber as required.
• Set the terminators.
• Connect the Programming Device to the PC.
• Turn ON power for the Slave Racks and the Remote I/O Units.
• Turn ON power for the PC.
• Create I/O tables.
108
Using the C200H-RM001-PV1 with CS1-series PCs
Appendix D
Ladder Program
No settings required.
109
Glossary
Backplane
A base to which Units are mounted to form a Rack. Backplanes provide a series
of connectors for these Units along with wiring to connect them to the CPU.
Backplanes also provide connectors used to connect them to other Backplanes.
In some Systems, different Backplanes are used for different Racks; in other
Systems, Racks differ only by the Units mounted to them.
basic Link System
A control system that includes only one of the following systems: Remote I/O
System, PC Link System, Host Link System, or Net Link System.
branch line
A communications line leading from a Link Adapter to any but the terminators in
a Link System.
Branching Link Adapter
A Link Adapter used to branch connections to Units in a Link System. Used
either to prevent the entire System from shutting down for an interruption at only
one point in the System or to enable connecting more than two Units in one System when each Unit supports only one connector.
building-block PC
A PC that is constructed from individual components, or “building blocks.” With
building-block PCs, there is no one Unit that is independently identifiable as a
PC. The PC is rather a functional assembly of components.
combined Link System
A control system that includes more than one of the following systems: Remote
I/O System, PC Link System, Host Link System, or Net Link System.
Control System
All of the hardware and software components used to control other devices. A
Control System includes the PC System, the PC programs, and all I/O devices
that are used to control or obtain feedback from the controlled system.
controlled system
The devices that are being controlled by a PC System.
Converting Link Adapter
A Link Adapter used to convert between different types of optical fiber cable, different types of wire cable, or between optical fiber cable and wire cable. Such
conversion is necessary to connect Units that use different forms of communication.
CPU
An acronym for central processing unit. In a PC System, the CPU executes the
program, processes I/O signals, communicates with external devices, etc.
CPU Backplane
A Backplane used to create a CPU Rack.
CPU Rack
Part of a building-block PC, the CPU Rack contains the CPU, a Power Supply,
and other Units. With most PCs, the CPU Rack is the only Rack that provides
linkable slots.
data area
An area in the PC’s memory that is designed to hold a specific type of data, e.g.,
the LR area is designed for to hold common data in a PC Link System.
distributed control
A automation concept in which control of each portion of an automated system is
located near the devices actually being control, i.e., control is decentralized and
‘distributed’ over the system. Distributed control is a concept basic to PC Systems.
electrical noise
Electrical ‘static’ that can disturb electronic communications. The ‘snow’ that
can appear on a TV screen is an example of the effects of electrical noise.
111
Glossary
Expansion I/O Backplane
A Backplane used to create an Expansion I/O Rack.
Expansion I/O Rack
Part of a building-block PC, an Expansion I/O Rack is connected to either a CPU
Rack or Slave Rack to increase the number of slots available for mounting Units.
I/O Block
Either an Input Block or an Output Block. It provides mounting positions for replaceable relays.
I/O capacity
The number of inputs and outputs that a PC is able to handle. This number
ranges from around one-hundred for smaller PCs to two-thousand for the largest ones.
I/O Control Unit
A Unit mounted to the CPU Rack in certain PCs to monitor and control I/O points
on Expansion I/O Units.
I/O devices
The devices to which terminals on I/O Units, Special I/O Units, or Intelligent I/O
Units are connected. I/O devices may be either part of the Control System, if they
function to help control other devices, or they may be part of the controlled system.
I/O Interface Unit
A Unit mounted to an Expansion I/O Rack in certain PCs to interface the Expansion I/O Rack to the CPU Rack.
I/O Link
Created in an Optical Remote I/O System to enable input/output of one or two IR
words directly between PCs. The words are input/output between the PC controlling the Master and a PC connected to the Remote I/O System through an I/O
Link Unit or an I/O Link Rack.
I/O Link Rack
A Rack used with certain PCs (e.g., C120) to mount an I/O Link Unit.
I/O Link Unit
A Unit used with certain PCs to create an I/O Link in an Optical Remote I/O System.
I/O point
The place at which an input signal enters the PC System or an output signal
leaves the PC System. In physical terms, an I/O point corresponds to terminals
or connector pins on a Unit; in terms of programming, an I/O point corresponds
to an I/O bit in the IR area.
I/O Terminal
A Remote I/O Unit connected in a Wired Remote I/O Subsystem to provide up to
sixteen I/O points at one location. I/O Terminals provide fixed transistor inputs or
outputs.
I/O Unit
The most basic type of Unit mounted to a backplane to create a Rack. I/O Units
include Input Units and Output Units, each of which is available in a range of
specifications. I/O Units do not include Special I/O Units, Link Units, etc.
Input Block
A Unit used in combination with a Modular Remote Terminal. An Input Block provides mounting positions for replaceable relays. Each relay can be selected according to specific input requirements.
Input Remote Terminal
A Remote Terminal that provides input points.
Link Adapter
A Unit used to connect communications lines, either to branch the lines or to convert between different types of cable. There are two types of Link Adapter:
Branching Link Adapters and Converting Link Adapters.
link
A hardware or software connection formed between two Units. “Link” can refer
either to a part of the physical connection between two Units (e.g., optical links in
112
Glossary
Wired Remote I/O Systems) or a software connection created to data existing at
another location (Network Data Links).
linkable slot
A slot on either a CPU or Expansion I/O Backplane to which a Link Unit can be
mounted. Backplanes differ in the slots to which Link Units can be mounted.
Link System
A system that includes one or more of the following systems: Remote I/O System, PC Link System, Host Link System, or Net Link System.
Link Unit
Any of the Units used to connect a PC to a Link System. These are Remote I/O
Units, I/O Link Units, PC Link Units, Host Link Units, and Net Link Units.
main line
In a Link System connected through Branching Link Adapters, the communications cable that runs from the Unit at each end of the System through the Link
Adapters.
Master
Short for Remote I/O Master Unit.
noise interference
Disturbances in signals caused by electrical noise.
Optical Slave Rack
A Slave Rack connected through an Optical Remote I/O Slave Unit.
Optical I/O Unit
A Unit that is connected in an Optical Remote I/O System to provide 8 I/O points.
Optical I/O Units are not mounted to a Rack.
optical cable link
In a Wired Remote I/O System, an optical cable connecting two Converting Link
Adapters. Specified because the System otherwise uses wire communications.
optical communications
A communications method in which signals are sent over optical fiber cable to
prevent noise interference and increase transmission distance.
optical fiber cable
Cable made from light conducting filaments used to transmit signals.
Output Block
A Unit used in combination with a Modular Remote Terminal. An Output Block
provides mounting positions for replaceable relays. Each relay can be selected
according to specific output requirements.
Output Remote Terminal
A Remote Terminal that provides output points.
PC
An acronym for Programmable Controller.
PC System
With building-block PCs, all of the Racks and independent Units connected directly to them up to, but not including the I/O devices. The limits of the PC System
on the upper end is the PC and the program in its CPU and on the lower end, I/O
Units, Special I/O Units, Optical I/O Units, Remote Terminals, etc.
peripheral device
Devices connected to a PC System to aid in system operation. Peripheral devices include printers, programming devices, external storage media, etc.
printed circuit board
A board onto which electrical circuits are printed for mounting into a computer or
electrical device.
Programmable Controller
A computerized device that can accept inputs from external devices and generate outputs to external devices according to a program held in memory. Programmable Controllers are used to automate control of external devices. Although single-unit Programmable Controllers are available, building-block Programmable Controllers are constructed from separate components. Such Pro-
113
Glossary
grammable Controllers are formed only when enough of these separate components are assembled to form a functional assembly, i.e., there is no one individual Unit called a PC.
programming device
A peripheral device used to input a program into a PC or to alter or monitor a
program already held in the PC. There are dedicated programming devices,
such as Programming Consoles, and there are non-dedicated devices, such as
a host computer.
Rack
An assembly of various Units on a Backplane that forms a functional unit in a
building-block PC System. Racks include CPU Racks, Expansion I/O Racks, I/O
Racks, and Slave Racks.
relay-based control
The forerunner of PCs. In relay-based control, groups of relays are wired to each
other to form control circuits. In a PC, these are replaced by programmable circuits.
Remote I/O Master Unit
The Unit in a Remote I/O System through which signals are sent to all other Remote I/O Units. The Remote I/O Master Unit is mounted either to a CPU Rack or
an Expansion I/O Rack connected to the CPU Rack. Remote I/O Master Unit is
generally abbreviated to simply “Master.”
Remote I/O Slave Unit
A Unit mounted to a Backplane to form a Slave Rack. Remote I/O Slave Unit is
generally abbreviated to simply “Slave.”
Remote I/O Subsystem
A Master and all of the Remote I/O Units connected in series to it. A Remote I/O
Subsystem exists when more than one Master is mounted to a PC. If Subsystems exist, the System is considered a Multilevel Remote I/O System.
Remote I/O System
A system in which remote I/O points are controlled through a Master mounted to
a CPU Rack or an Expansion I/O Rack connected to the CPU Rack.
Remote I/O Unit
Any of the Units in a Remote I/O System. Remote I/O Units include Masters,
Slaves, Optical I/O Units, I/O Link Units, and Remote Terminals.
Remote Terminal
A Remote I/O Unit connected in a Wired Remote I/O Subsystem to provide up to
sixteen I/O points at one location. Remote Terminals feature replaceable relays
that can be individually changed to meet specific I/O requirements.
series
A wiring method in which Units are wired consecutively in a string. In Link Systems wired through Link Adapters, the Units are still functionally wired in series,
even though Units are placed on branch lines.
Slave
Short for Remote I/O Slave Unit.
Slave Rack
A Rack containing a Remote I/O Slave Unit and controlled through a Remote I/O
Master Unit. Slave Racks are generally located away from the CPU Rack.
slot
A position on a Rack (Backplane) to which a Unit can be mounted.
Special I/O Unit
A dedicated Unit that is designed for a specific purpose. Special I/O Units include Position Control Units, High-speed Counter Units, Analog I/O Units, etc.
switching capacity
The voltage/current that a relay can switch on and off.
system configuration
The arrangement in which Units in a System are connected.
transmission distance
The distance that a signal can be transmitted.
114
Glossary
Unit
In OMRON PC terminology, the word Unit is capitalized to indicate any product
sold for a PC System. Though most of the names of these products end with the
word Unit, not all do, e.g., a Remote Terminal is referred to in a collective sense
as a Unit. Context generally makes any limitations of this word clear.
unit number
A number assigned to some Link Units and Special I/O Units to assign words
and sometimes other operating parameters to it.
wire communications
A communications method in which signals are sent over wire cable. Although
noise resistance and transmission distance can sometimes be a problem with
wire communications, they are still the cheapest and the most common, and perfectly adequate for many applications.
Wired Slave Rack
A Slave Rack connected through a Wired Remote I/O Slave Unit.
work word
A word that can be used for data calculation or other manipulation in programming, e.g., LR words not used in a PC Link or Net Link System.
115
Index
A
E
Abbreviations, model numbers,
error processing,
applications, precautions,
errors
AR area flags,
Error Check bit, , ,
error numbers and restart flags (C200H),
locating
in C1000H, or C2000H Systems,
in C120 or C500 Systems,
in C200H Systems,
transfer errors,
monitoring
using SR and AR bits in C200H, ,
using SR bits in C1000H, and C2000H,
using SR bits in C120 or C500,
Remote I/O Error flag, , ,
SR area flags,
word duplication flags,
B
block diagrams
I/O Link Units,
Optical I/O Units,
Remote I/O Master Units,
Remote I/O Master Units (C200H),
Remote I/O Slave Units,
Remote I/O Slave Units (C200H),
C
C1000H, and C2000H Systems
configuration,
response time,
Example, C200H Basic System Configuration,
I
C120 Systems, configuration,
I/O Link Rack, dimensions,
C20 Systems, configuration,
I/O Link Racks,
for C120,
unit and housing assembly,
C200H Remote I/O Slave Racks,
C200H Systems
configuration,
I/O Link Unit words in,
response time,
word allocation in,
C500 Systems
configuration,
response time,
cable
optical fiber, transmission distance,
types of optical fiber,
CPU WAIT’G,
D
delay time, in C500 Remote I/O Systems, ,
dimensions
C500 CPU Racks,
Expansion I/O Racks, ,
I/O Link Units,
Optical I/O Units,
Remote I/O Master Units,
Remote I/O Master Units (C200H),
Remote I/O Racks,
Remote I/O Slave Units,
Slave Racks, C200H,
I/O Link Unit
definition,
dimensions,
power supply terminals (C20),
I/O Link Units
block diagram,
channel settings,
dimensions,
indicators,
nomenclature,
operation, ,
switch settings for,
switches,
terminals,
transmission points setting for,
word allocation,
words in C200H Systems,
I/O points, maximum per System,
I/O word allocation
for C1000H, and C2000H Systems,
for C200H Slaves connected to other PCs,
for C200H System with C200H Slaves,
for C200H System with C200H Slaves and Expansion I/O
Racks,
for C200H System with C500 Slaves,
for C200H System with I/O Link Unit Connection to other
PC,
for C200H System with Optical Transmitting I/O Units,
for C500 Master with Optical Transmitting I/O Units,
117
Index
for C500 Master with Slaves,
for C500 Master, Slaves, I/O Link Units, I/O Units,
for C500 Master, Slaves, Optical I/O Units,
for complex C200H System configuration,
for Optical I/O Units,
setting order,
P
power supply, terminals
C20 I/O Link Unit,
C200H Slaves,
indicators
I/O Link Units,
Optical I/O Units, ,
Remote I/O Master Units,
Remote I/O Master Units (C200H),
Remote I/O Slave Units,
Remote I/O Slave Units (C200H),
precautions,
applications,
general,
operating environment,
safety,
installation, precautions,
Programming Console
displays, CPU WAIT’G,
entering I/O table through,
L
programming, simplification by Remote I/O System,
protection, against complete system failure,
Link Adapter,
branching,
Link Adapters, ,
N
noise interference, reduction by Remote I/O System,
nomenclature, Optical I/O Units,
O
operating environment, precautions,
optical fiber cable,
handling of,
ordering and assembling APF cable,
transmission distance,
types and functions of,
Optical I/O Units
assigning word numbers for,
block diagram,
dimensions,
error flags for word duplication,
indicators,
maximum number of for C200H,
nomenclature,
switch setting for,
switches,
terminals,
terminator settings for,
unit components,
word settings for,
Optical Remote I/O System
advantages,
branchline,
mainline,
overview,
using Link Adaptors,
Optical Remote I/O Systems, definitions of types,
118
R
rack numbers, ,
Remote I/O Master Units
block diagram, ,
dimensions, ,
indicators, ,
switch settings (C200H),
switches,
switches and RUN output terminals,
unit components, ,
Unit numbers (C200H),
Remote I/O Racks,
dimensions,
unit and housing assembly,
Remote I/O Slave Units
allocating word numbers for,
block diagram, ,
C200H Slaves in other PC Systems,
dimensions,
indicators, ,
mounting to rack,
switch settings, ,
switch settings (C200H),
switches and RUN output terminals,
terminals (C200H),
unit components, ,
Unit numbers,
Remote I/O Subsystem,
Remote I/O System
Multilevel System,
overview,
response time
C1000H, and C2000H Systems,
C200H Systems,
C500 Systems,
Index
S
safety precautions. See precautions
self–diagnosis,
Slave Racks, C200H,
Special I/O Units
and word allocation in C200H Systems,
in C200H Systems,
specifications,
switch settings
I/O Link Units,
Optical I/O Units,
Remote I/O Master Units (C200H),
Remote I/O Slave Units,
Remote I/O Slave Units (C200H),
switches
I/O Link Units,
Optical I/O Units,
Remote I/O Master Units,
Remote I/O Master Units (C200H),
Remote I/O Slave Units,
system configuration
basic,
C1000H, and C2000H Systems,
I/O Link Units, Slaves, Optical I/O Units,
Link Units,
Master and Slaves,
Optical I/O Units,
Slaves and Optical I/O Units,
C120 Systems,
I/O Link Units,
I/O Link Units, Slaves, Optical I/O Units,
Masters and Slaves,
Optical I/O Units,
Slaves and Optical I/O Units,
C20 Systems,
C200H Systems,
basic configuration,
C200H Slaves and different type Masters,
connecting to other PCs,
I/O Link Units,
one Master and several Slaves,
Slaves with Expansion I/O Racks, ,
two Masters and several Slaves,
C500 Systems,
I/O Link Units,
I/O Link Units, Slaves Optical I/O Units,
Master and Slaves,
Optical I/O Units,
Slaves and Optical I/O Units,
Unit connection,
system design,
T
terminals
I/O Link Units,
Optical I/O Units,
terminators, , , ,
I/O Link Units,
Optical I/O Units,
Remote I/O Slave Units,
settings,
troubleshooting, charts
C200H Systems,
most PC Systems,
U
unit components
I/O Link Units,
Optical I/O Units,
Remote I/O Master Units,
Remote I/O Master Units (C200H),
Remote I/O Slave Units,
Remote I/O Slave Units (C200H),
Unit numbers, ,
W
word allocation
for Remote I/O Slave Units,
in C200H Systems,
119
Revision History
A manual revision code appears as a suffix to the catalog number on the front cover of the manual.
Cat. No. W136-E1-3
Revision code
The following table outlines the changes made to the manual during each revision. Page numbers refer to the
previous version.
Revision code
2
3
Date
August 1989
December 1999
Revised content
Complete reorganization and rewrite.
C200H Slave Backplanes added.
Name of Optical Transmitting I/O Units changed to Optical I/O Units.
I/O response times added.
C20 I/O Link Unit added.
Precautions, Appendix C, and Appendix D added.
Page 9: Slaves per Master for C1000H/C2000H corrected to 8 from 2 for the
top table.
Page 24: Note added after second diagram on page.
Page 35: Note added after Setting Word Multipliers.
Page 47: Note added after diagram.
Page 73: Information on wiring and installation added after diagram.
Page 74: Note added to diagram. Information on wiring added after diagram.
Page 101: Changes made to model numbers for C200H Master and C200H
Backplanes.
Page 102: Some information on I/O Link Units, Optical I/O Units, and Link
Adapters removed.
Page 103: Information on Quartz Cable removed.
Page 107: “10G” changed to “98 m/s2” in table.
Page 105: “For plastic-clad optical fiber” column has been deleted from the
Transmission Distances table.
121
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