Omron GT1, DeviceNet MULTIPLE I/O TERMINAL, DeviceNet Slaves User Manual

Cat. No. W348-E1-05

DRT1-COM

GT1 Series

DeviceNet

MULTIPLE I/O TERMINAL

OPERATION MANUAL

DRT1-COM

GT1 Series

DeviceNet

MULTIPLE I/O TERMINAL

Operation Manual

Revised May 2003

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.

Trademarks and Copyrights

COMBICON is a registered trademark of Phoenix Contact K.K.

DeviceNet is a registered trademark of the Open DeviceNet Vendor Association, Inc.

PowerTap is a registered trademark of the Allen-Bradley Company, Inc.

OMRON, 1998

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		xi
1	Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
2	General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
3	Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
4	Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
5	Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xiii
6	EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xv
SECTION 1
MULTIPLE I/O TERMINAL . . . . . . . . . . . . . . . . . . . . . . . .		1
1-1	MULTIPLE I/O TERMINAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
1-2	Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
SECTION 2
Hardware Setup and Operational Check. . . . . . . . . . . . . . .		19
2-1	Basic Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
2-2	Specific Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	21
SECTION 3
Sample Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		27
3-1	Examples of Counter Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	28
SECTION 4
Basic I/O Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . .		35
4-1	Communications Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
4-2	Specifications Common to All Basic I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
4-3	Transistor Input Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	44
4-4	Transistor Output Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	66
4-5	Relay Output Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	90
SECTION 5
Special I/O Unit Specifications . . . . . . . . . . . . . . . . . . . . . . .		97
5-1	Analog Input Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	98
5-2	Analog Output Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	124
5-3	GT1-TS04T and GT1-TS04P Temperature Input Units . . . . . . . . . . . . . . . . . . . . . . . . . . . .	148
5-4	GT1-CT01 Counter Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	172
SECTION 6
Communications Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . .		189
6-1	Remote I/O Communications Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	190
SECTION 7
Troubleshooting and Maintenance . . . . . . . . . . . . . . . . . . . .		195
7-1	Normal Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	196
7-2	Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	197
7-3	Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	204
Appendices
A	Slave Device Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	209
B	Connectable Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	215
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		221
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		223

vii

About this Manual:

This manual describes the operation of the DeviceNet MULTIPLE I/O TERMINAL and includes the sections described below.

Please read this manual carefully and be sure you understand the information provided before attempting to operate the MULTIPLE I/O TERMINAL.

Section 1 provides an overview of the MULTIPLE I/O TERMINAL, including its features and functions.

Section 2 provides the basic procedure for operation and includes an actual example.

Section 3 provides some examples of programs used with the Counter Unit.

Section 4 provides the basic specifications for the I/O Units including Communications Units, Transistor Input and Output Units, and Relay Output Units.

Section 5 provides the specifications for Special I/O Units, including the Analog Input Unit, the Analog Output Unit, the Temperature Input Unit, and the Counter Unit. Setting procedures for a Configurator are also provided.

Section 6 provides characteristics for communications in the DeviceNet Unit and describes how to calculate the times required for communications between Units.

Section 7 provides procedures for dealing with errors as well as basic maintenance procedures.

The Appendices provide Slave device profiles and lists of connectable devices.

!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 Programmable Controller (PC) Systems and related devices.

The information contained in this section is important for the safe and reliable application of PC Systems. You must read this section and understand the information contained before attempting to set up or operate a PC System.

1	Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
2	General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
3	Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
4	Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
5	Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xiii
6	EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xv

xi

Intended Audience

1

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 operation 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 OMRON PC Systems. Be sure to read this manual before attempting to use the software and keep this manual close at hand for reference during operation.

!WARNING It is extremely important that a PC System and all PC Units 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 a PC System to the abovementioned applications.

3 Safety Precautions

!WARNING Never attempt to disassemble any Units while power is being supplied. Doing so may result in serious electrical shock or electrocution.

!WARNING Never touch any of the terminals while power is being supplied. Doing so may result in serious electrical shock or electrocution.

4 Operating Environment Precautions

Do not operate the control system in the following places.

•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 shock or vibration.

•Locations subject to exposure to water, oil, or chemicals.

xii

Application Precautions

5

•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 The operating environment of the PC 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 PC 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.

5 Application Precautions

Observe the following precautions when using the MULTIPLE I/O TERMINAL.

!WARNING Failure to abide by the following precautions could lead to serious or possibly fatal injury. Always heed these precautions.

• Always ground the system to 100 Ω or less when installing the system to protect against electrical shock.

•Always turn OFF the power supply to the system before attempting any of the following. Performing any of the following with the power supply turned ON may lead to electrical shock:

•Mounting or removing any Units (e.g., Power Supply Unit, I/O Units, CPU Unit, etc.) or memory cassettes.

•Assembling any devices or racks.

•Connecting or disconnecting any cables, connectors, or wiring.

!Caution Failure to abide by the following precautions could lead to faulty operation of or damage to the MULTIPLE I/O TERMINAL. Always heed these precautions.

•Use the Units only with the power supplies and voltages specified in the operation manuals. Other power supplies and voltages may damage the Units.

•Take measures to stabilize the power supply to conform to the rated supply if it is not stable.

•Provide circuit breakers and other safety measures to provide protection against shorts in external wiring.

•Do not apply voltages exceeding the rated input voltage to Input Units. The Input Units may be destroyed.

•Do not apply voltages exceeding the maximum switching capacity to Output Units. The Output Units may be destroyed.

•Always disconnect the LG terminal when performing withstand voltage tests.

•Install all Units according to instructions in the operation manuals. Improper installation may cause faulty operation.

•Be sure to tighten Backplane screws, terminal screws, and cable connector screws securely.

•Do not attempt to take any Units apart, to repair any Units, or to modify any Units in any way.

xiii

Application Precautions

5

•Do not use communications cables or I/O cables in parallel to or close to high-tension, high-rate current carrying lines. Doing so may cause faulty operation.

•Be sure to install the MULTIPLE I/O TERMINAL in the proper direction. Not doing so may cause faulty operation.

•When attaching Units to the DIN track, be sure to attach them securely. Not doing so may cause the Units to be damaged.

•Use this product within the specified ranges for communications distances and connection distances. Not doing so may lead to faulty operation.

•Use the specified cables when making communications connections. Not doing so may cause faulty operation.

•Be sure to wire the communications paths, the communications power supplies, the internal power supplies, and the I/O power supplies correctly. Use voltages for the power supplies that are within the specified ranges. Not doing so may cause malfunction.

•Do not, under any circumstances, use this product with loads exceeding the contact rating values. Doing so may cause deterioration of insulation and damage.

•The life-expectancy of the relays depends greatly on the switching conditions. Before practical use of the product, perform a trial operation of the product in the actual conditions in which it will be used. Use the product at a switching frequency that will allow efficient operation. Continued use of the product in conditions causing reduced efficiency will cause deterioration of insulation and damage.

•Connection Cables

•Before switching ON power supplies, check that the connectors are mounted securely.

•Check that the connectors for the I/O Unit interfaces are securely locked.

•Tightening Torques

Check that all the screws for the Units are tightened to the correct torque. Not doing so may cause faulty operation.

•Internal power supplies, I/O power supplies, terminal screws:

0.3to 0.5 N • m

•Communications cable, communications connector screws:

0.25to 0.35 N • m

•High-density I/O Unit connector screws: 0.25 to 0.35 N • m

•Cleaning

•Do not used thinner-based products for cleaning. Doing so may dissolve attachment areas or cause discoloration.

•Power Supply

•Use separate power supplies for communications power supplies, internal power supplies, I/O power supplies, load power supplies, and encoder power supplies. Not doing so may lead to faulty operation.

!Caution The following precautions are necessary to ensure the general safety of the system. Always heed these precautions.

•Provide double safety mechanisms to handle incorrect signals that can be generated by broken signal lines or momentary power interruptions.

•Provide external interlock circuits, limit circuits, and other safety circuits in addition to any provided within the PC System to ensure safety.

xiv

EC Directives

6

6 EC Directives

The MULTIPLE I/O TERMINAL conforms to EMC as follows:

EMC Directives

OMRON devices that comply with EC Directives also conform to the related EMC standards so that they can be more easily built into other devices or the overall machine. The actual products have been checked for conformity to EMC standards (see the following note). Whether the products conform to the standards in the system used by the customer, however, must be checked by the customer.

EMC-related performance of the OMRON devices that comply with EC Directives will vary depending on the configuration, wiring, and other conditions of the equipment or control panel on which the OMRON devices are installed. The customer must, therefore, perform the final check to confirm that devices and the overall machine conform to EMC standards.

The MULTIPLE I/O TERMINAL products that comply with EC Directives must be installed as follows:

1,2,3... 1. MULTIPLE I/O TERMINAL products are designed for installation inside control panels. All MULTIPLE I/O TERMINAL products must be installed within control panels.

2.Used reinforced insulation or double insulation for the DC power supplies used for the communications power supply, internal circuit power supply, and the I/O power supplies.

3.MULTIPLE I/O TERMINAL products that meet EC Directives also meet the Common Emission Standard (EN50081-2). However, radiated emission (at 10 m) will vary with the overall configuration of the control panel, other devices connected to the control panel, and other conditions. You must therefore confirm that EC Directives are satisfied for the overall machine or device.

4.MULTIPLE I/O TERMINAL products that meet EC Directives have configurations with less than 30 m of I/O wiring, and less than 10 m of power supply wiring.

The following examples show means of reducing noise.

1,2,3... 1. Noise from the communications cable can be reduced by installing a ferrite core on the communications cable within 10 cm of the DeviceNet Master Unit.

Ferrite Core (Data Line Filter): LF130B (Manufactured by Easy Magnet Co.)

Impedance specifications 25 MHZ: 105 Ω

100 MHZ: 190 Ω

		30 mm				32 mm
13 mm				31.5 mm

2.Wire the control panel with cables as thick and short as possible and ground to 100 Ω min.

xv

EC Directives

6

3.Keep DeviceNet communications cables as short as possible and ground to 100 Ω min.

xvi

SECTION 1

MULTIPLE I/O TERMINAL

This section provides an overview of the MULTIPLE I/O TERMINAL, including its features and functions.

1-1	MULTIPLE I/O TERMINAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		2
	1-1-1	Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
	1-1-2	System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
	1-1-3	Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
	1-1-4 Communications Units and I/O Units . . . . . . . . . . . . . . . . . . . . . . .		4
	1-1-5	List of Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
1-2	Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	1-2-1 I/O Unit Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	1-2-2	Exchanging Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	1-2-3	Allocating I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
	1-2-4 I/O Unit Interface Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		15
	1-2-5	I/O Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17

1

MULTIPLE I/O TERMINAL

Section 1-1

1-1 MULTIPLE I/O TERMINAL

1-1-1 Overview

A MULTIPLE I/O TERMINAL is a building-block DeviceNet Slave that consists of a Communications Unit that interfaces one or more I/O Units. The I/O Unit interface supports up to 8 I/O Units and a total of up to 1,024 I/O points. I/O Units are connected using simple snap-on connections via I/O Unit Connecting Cables. Allocation and address settings on the I/O Unit interface are not required, enabling simple, flexible distributed I/O control.

1-1-2 System Configuration

DeviceNet Master Unit

DeviceNet Network

I/O Unit Connecting Cable

Communications	I/O Units
Unit

I/O Unit interface

Maximum of 8 Units; total length: 3 m, 1 m max. between Units

Total number of points (inputs + outputs): 1,024 points

The total number of points must be within the maximum number supported by the Master.

Example: With C200HW-DRM21-V1 Master, 512 inputs/512 outputs

2

MULTIPLE I/O TERMINAL

Section 1-1

1-1-3 Features

Simple Connections

Automatic Recognition of

I/O Units

Status Notification

Many Types of I/O Unit

An I/O-intensive System Can be Built at Low Cost

Range Setting by

Configurator

The Communications Unit and the I/O Units are separate, and the Communications Unit and the I/O Units are connected by an I/O Unit interface. I/O can be expanded simply by connecting additional I/O Units to the I/O Unit interface.

When the power to the Communications Unit is turned ON, the models of the I/O Units on the I/O Unit interface are automatically recognized, and the number of remote I/O communications points with the DeviceNet Master Unit is automatically determined. This enables I/O to be increased or decreased simply by connecting or disconnecting I/O Units.

Status information about the I/O Unit interface can be transmitted as inputs to the DeviceNet Master Unit (two words).

The following I/O Units are available.

•16or 32-point Transistor Input Units (terminal block, connector, 25-pin D- sub connector, or high-density connector)

•16or 32-point Transistor Output Units (terminal block, connector, 25-pin D-sub connector, or high-density connector)

•8-point/16-point Relay Output Unit (16-point Unit)

•4- or 8-point Analog Input Unit (terminal block or connector)

•4-point Analog Output Unit (terminal block or connector)

•1-point Pulse Input Unit (high-speed counter)

•4-point Temperature Input Unit

Compared with fixed I/O Terminals, a high cost-performance ratio can be achieved if I/O Units are used.

The input and output ranges for the Analog Input, Analog Output, and Temperature Input Units can be set for each point using the Configurator (with version 1.11 or later). Using DIP switches, ranges can be set in 2-point units for the Analog Input and Analog Output Units, and in 4-point units for the Temperature Input Unit.

3

MULTIPLE I/O TERMINAL Section 1-1

1-1-4 Communications Units and I/O Units

Communications Unit The Communications Unit interfaces the I/O Units to the DeviceNet.

•It controls the I/O Units in response to I/O refresh requests from the DeviceNet Master.

•It automatically recognizes the configuration of the I/O Units when the I/O Unit interface is initialized.

•It notifies the connection status or the status information for the I/O Units to the DeviceNet Master Unit.

•It provides a DIP switch to set the node number and baud rate of the MULTIPLE I/O TERMINAL as a DeviceNet Slave.

DeviceNet Master Unit

Output area		Input area
(Master →	Commu- (Communications
nications Unit)		Unit →	Master)
	0	Status
	1		2

DeviceNet Network

I/O Unit interface

0	1	2
Example:	Example:	Example:
Outputs	Outputs	Inputs

I/O Units

There are various I/O Units that can be connected to the I/O Unit interface.

•I/O Units are connected to the Communications Unit using an I/O Unit Connecting Cable (included with the I/O Unit, a 1-m I/O Unit Connecting Cable (GCN1-100) is also available).

•No address or baud rate settings are required.

•The connection order of I/O Units is flexible.

		Units with Connectors
	Communications Unit	Transistor Input Unit		End connector
		Transistor Output Unit	Relay Output Unit

	Units with Terminal Blocks	Units with High-density	Analog Input Unit
	Transistor Input Unit	Connectors	Analog Output Unit
	Transistor Output Unit	Transistor Input Unit
I/O Unit Connecting Cables		Transistor Output Unit
Included with Unit: 40 mm
GCN1-100:	1 m (sold separately)

4

MULTIPLE I/O TERMINAL Section 1-1

1-1-5		List of Models
	Unit		I/O	Words allocated		I/O	Unit	Installa-	Model number	Remarks
			points	in PC memory		connections	power	tion
							supply
				Input	Output
							voltage
	Communications Unit		None	Status	0 words	None	24 VDC	DIN track	DRT1-COM	---
				two			(sup-
				words			plied
							from out-
	Basic I/O	Transistor	16	1 word	0 words	M3 terminal			GT1-ID16	NPN
							side)
	Units	Input Units	inputs			block			GT1-ID16-1	PNP
			16	1 word	0 words	Connectors			GT1-ID16MX	NPN
			inputs			(made by			GT1-ID16MX-1	PNP
						MOLEX)
			16	1 word	0 words	Connectors			GT1-ID16ML	NPN
			inputs			(made by			(See note 2.)
						FUJITSU)			GT1-ID16ML-1	PNP
									(See note 2.)
			16	1 word	0 words	Connectors			GT1-ID16DS	NPN
			inputs			(25-pin D-			(See note 2.)
						sub connec-			GT1-ID16DS-1	PNP
						tors)
									(See note 2.)
			32	2 words	0 words	High-density			GT1-ID32ML	NPN
			inputs			connector			GT1-ID32ML-1	PNP
						(made by
						FUJITSU)
		Transistor	16 out-	0 words	1 word	M3 terminal			GT1-OD16	NPN
		Output	puts			block			GT1-OD16-1	PNP
		Units
			16 out-	0 words	1 word	Connectors			GT1-OD16MX	NPN
			puts			(made by			GT1-OD16MX-1	PNP
						MOLEX)
			16 out-	0 words	1 word	Connectors			GT1-OD16ML	NPN
			puts			(made by			(See note 2.)
						FUJITSU)			GT1-OD16ML-1	PNP
									(See note 2.)
			16 out-	0 words	1 word	Connectors			GT1-OD16DS	NPN
			puts			(25-pin D-			(See note 2.)
						sub connec-			GT1-OD16DS-1	PNP
						tors)
									(See note 2.)
			32 out-	0 words	2 words	High-density			GT1-OD32ML	NPN
			puts			connector			GT1-OD32ML-1	PNP
						(made by
						FUJITSU)
		Relay Out-	8 out-	0 words	1 word	M3 terminal			GT1-ROP08	---
		put Units	puts			block
			16 out-	0 words	1 word	M3 terminal			GT1-ROS16	---
			puts			block

5

MULTIPLE I/O TERMINAL								Section 1-1
Unit		I/O	Words allocated		I/O	Unit	Installa-	Model number	Remarks
		points	in PC memory		connections	power	tion
						supply
			Input	Output
						voltage
Special I/	Analog	4 inputs	4 words	0 word	M3 terminal	24 VDC	DIN track	GT1-AD04	Inputs:
O Units	Input Units				block	(sup-		(See note 2.)	4 to
(See						plied			20 mA, 0
note.)						from out-			to 20 mA,
		8 inputs	8 words	0 word	Connectors	side)		GT1-AD08MX	0 to 5 V,
					(made by				1 to 5 V,
					MOLEX)				0 to 10 V,
									–10 to
									10 V
	Analog	4 out-	0 words	4 words	M3 terminal			GT1-DA04	Outputs:
	Output	puts			block			(See note 2.)	4 to
	Units								20 mA,
									0 to 5 V,
									1 to 5 V,
									0 to 10 V,
									–10 to
									10 V
		4 out-	0 words	4 words	Connectors			GT1-DA04MX	Outputs:
		puts			(made by				0 to 5 V,
					MOLEX)				1 to 5 V,
									0 to 10 V,
									–10 to
									10 V
	Tempera-	4 inputs	4 words	0 words	M3 terminal			GT1-TS04T	Inputs:
	ture Input		(8 words		block				R, S, K, J,
	Units		depend-						T, B, L
			ing on
								GT1-TS04P	Inputs:
			mode)
									Pt100,
									JPt100
	Counter	1 input	3 words	3 words	M3 terminal			GT1-CT01	1 external
	Unit				block				input
									2 external
									outputs

Note The front-panel indicators and other parts of Analog Input Units, Analog Output Units, Temperature Input Units, and Counter Units differ from those of other I/O Units. These Units belong to a group called Special I/O Units.

An end connector is attached to the Communications Unit, and a 40-mm I/O Unit Connecting Cable is included with each I/O Unit. A 1-m I/O Unit Connecting Cable (GCN1-100) is also available.

1 m

6

MULTIPLE I/O TERMINAL						Section 1-1
Applicable Connectors	The applicable connectors are shown in the following table.
		Connector		Model number		Remarks
	Connec-	Pressure-	Housing	52109-0390		For AWG#24
	tors made	welded
	by MOLEX
		Crimp	Housing	51030-0330
				(See note.)
			Reeled con-	50083-8014		For AWG#24 to 30
			tacts
				50084-8014		For AWG#22 to 24
			Loose con-	50083-8114		For AWG#24 to 30
			tacts	(See note.)
				50084-8114		For AWG#22 to 24
			Crimping tool	57036-5000		For AWG#22 to 26
				57037-5000		For AWG#24 to 30
				(See note.)
	Connec-	Soldered		FCN361J024-AU
	tors made
	by
		Pressure-welded		FCN367J024-AU/F
	FUJITSU
	correspond-
	ing to 16-
		Crimp		FCN363J024-AU
	point con-
	nectors
	Recom-	Hood		XW2S-2513		OMRON
	mended
	connectors
	correspond-
		Plug		XW2A-2501		OMRON
	ing to 25-
	pin D-sub
	connectors
	Connec-	Soldered		FCN361J040-AU
	tors made
	by
		Pressure-welded		FCN367J040-AU/F
	FUJITSU
	correspond-
	ing to high-
		Crimp		FCN363J040-AU
	density
	connectors

Note Refer to page 219, High-density Connector Cables for MULTIPLE I/O TERMINALs for details.

7

Functions Section 1-2

1-2	Functions
1-2-1	I/O Unit Interface Specifications
		Item		Specification
		Communications method		Special protocol
		Number of I/O Units		8 Units max.
		Maximum number of points		Total inputs/outputs: 1,024 points (bits)
		Communications dis-	Total length	3 m max.
		tance
			Between Units	1 m max. (Cable included with Unit is
				40 mm.)
		Communications power supply		Supplied from the Communications
				Unit to the I/O Unit (0.4 A max.)
		Relationship to DeviceNet		After the I/O Unit interface is estab-
				lished, DeviceNet communications con-
				tinue normally, even if an error occurs
				on the I/O Unit interface.
		Addresses		Automatically recognized when the
				power to the Communications Unit is
				turned ON.
		I/O configuration		Automatically recognized when the
				power to the Communications Unit is
				turned ON. If the configuration is
				changed while the power supply is ON,
				a configuration error will occur.
		Self-diagnostic func-	Configuration errors	The I/O Unit configuration is constantly
		tions		checked while power is supplied. If a
				mismatch occurs while the power is
				turned ON, I/O refreshing for all I/O
				Units is stopped.
			Special I/O Unit	Errors are detected in the Special I/O
			errors	Units (Analog Input Units, Analog Out-
				put Units, Temperature Input Units, and
				Counter Units) on the I/O Unit interface.
			I/O Unit interface	Communications stop when there is no
			errors	communications response from an I/O
				Unit.
				Communications stop when there is no
				specific response from the last I/O Unit
				(terminator).
				Communications stop when nine or
				more I/O Units are connected.
			Power supply over-	The power supply to the I/O Units and I/
			load to I/O Units	O refreshing for all I/O Units are
				stopped when the power supply to the
				I/O Units through the Communications
				Unit exceeds 0.4 A.
		Error detection		Frame error check; CRC-CCITT check

8

Functions

Section 1-2

I/O Interface Current

Consumption

I/O Unit Interface

Addresses

Checking the I/O Unit

Interface Status

Make sure that the power supply from the Communications Unit to the I/O Units is less than the total rated output current (400 mA). The I/O interface current consumption for each I/O Unit is shown in the following table.

I/O Unit	I/O interface current consumption
GT1-ID16(-1)	35 mA max.
GT1-ID16MX(-1)	35 mA max.
GT1-ID16ML(-1)	35 mA max.
GT1-ID16DS(-1)	35 mA max.
GT1-ID32ML(-1)	55 mA max.
GT1-OD16(-1)	35 mA max.
GT1-OD16MX(-1)	35 mA max.
GT1-OD16ML(-1)	35 mA max.
GT1-OD16DS(-1)	35 mA max.
GT1-OD32ML(-1)	65 mA max.
GT1-ROP08	40 mA max.
GT1-ROS16	50 mA max.
GT1-AD04	50 mA max.
GT1-AD08MX	50 mA max.
GT1-DA04	50 mA max.
GT1-DA04MX	50 mA max.
GT1-TS04T	50 mA max.
GT1-TS04P	50 mA max.
GT1-CT01	90 mA max.

Calculation Example

When five GT1-ID32ML Input Units and three GT1-OD16 Output Units are used, the total current consumption is calculated as follows:

(GT1-ID32ML current consumption) x 5 Units + (GT1-OD16 current consumption) x 3 Units = 55 mA x 5 + 35 mA x 3 = 380 mA ≤ 400 mA

The addresses of the I/O Units on the I/O Unit interface are automatically set when the Communications Unit is started. The addresses are from 0 to 7 in ascending order from the I/O Units closest to the Communications Unit.

DeviceNet Master Unit

DeviceNet Network

I/O Unit interface
Communica- I/O Unit I/O Unit	I/O Unit
tions Unit

The following two methods are used to check the I/O Unit interface status:

•Checking the Communications Unit and I/O Unit indicators

•Checking the status of the Communications Unit

9

Functions	Section 1-2
Indicators
DeviceNet	TS indicator
Network

Communica- I/O Unit I/O Unit tions Unit

Unit	Normal	Error
Communications	TS Indicator:	TS indicator
Unit	Lit green	I/O Unit interface error:	Lit red
		Special I/O Unit error:	Flashing green
		Maximum power supply
		overload to I/O Units:	Not lit
I/O Units	TS indicator:	TS indicator
	Lit green	I/O Unit interface error:	Lit red
	U.ERR indica-	U.ERR indicator
	tor: Not lit	Special I/O Unit error:	Lit red
	PWR indicator:	PWR indicator
	Lit green	No internal power supply:	Not lit

For details, refer to page 199, Troubleshooting via Indicators.

Checking the I/O Unit Interface Status

The first two words of the CPU Unit allocation input area are always allocated to the status of the I/O Unit interface via the DeviceNet.

DeviceNet Master Unit

Output Input area area

0 wd

+1 wd

Status, two words

I/O Unit connection information

Error slaves

Registered slaves

For details, see page 15.

DeviceNet Network

		Communica- I/O Unit I/O Unit
		tions Unit
1-2-2	Exchanging Data
Initialization		When the Communications Unit is started, it automatically recognizes the
		configuration of the I/O Units and registers this status as the normal configu-
		ration (in RAM memory). At the same time, addresses 0 to 7 are allocated to
		the I/O Units in ascending order from the I/O Unit closest to the Communica-
		tions Unit. These processes are performed each time the power is turned ON.

10

Functions

Section 1-2

Remote I/O communications with the DeviceNet Master Unit are carried out by a MULTIPLE I/O TERMINAL based on the registered configuration. When the power to the Communications Unit is turned ON, the bits allocated to the I/ O Units can be used to check the status (bits 0 to 7 of the first word) of the Communications Unit.

DeviceNet Network

	Communica-	I/O Unit I/O Unit	I/O Unit
	tions Unit	Automatically recognizes the configuration of the
	At startup	I/O Units
		Communications with the DeviceNet Master Unit
		based on this I/O configuration

Note	1.	If the configuration of the I/O Units is to be changed, a number of precau-
		tions must be noted. For details, see 1-2-5 I/O Configuration Changes.
	2.	For details of data exchange timing, see 6-1-1 I/O Response Time.
Error Processing	Even if an error occurs in the I/O Unit interface after initialization is completed,
	DeviceNet communications will continue normally. Therefore, an error pro-
	cessing program section must be included in the CPU Unit to check the status
	of the Communications Unit for errors that have occurred and to identify the
	error type and location.

1-2-3	Allocating I/O
		This section explains how words for a MULTIPLE I/O TERMINAL are allo-
		cated in the output area and input area of the Master. For details of remote I/O
		functions in the output area and input area of the Master such as word specifi-
		cation, fixed allocation, and user-set allocation, refer to the DeviceNet Opera-
		tion Manual (W267).
Fixed Allocation		The output area and input area corresponding to the Communications Unit
		node number for a MULTIPLE I/O TERMINAL are as shown in the following
		diagram.
		Output Area
		The output area contains output bits in the order that I/O Units are connected
		on the I/O Unit interface.
		Input Area
		The input area contains the Communications Unit status (two words), and
		input bits in the order that I/O Units are connected on the I/O Unit interface.
		Output area	Input area

Area corresponding to

Communications Unit

node number Output bits on the I/O Unit

interface

I/O Unit interface status

Input bits on the I/O Unit interface

The input and output bits for the I/O Unit interface are allocated in the DeviceNet input and output areas in 16-point (one word) increments. With 8- point I/O Units, these bits are allocated using the rightmost byte (bits 0 to 7), and the leftmost byte (bits 8 to 15) will be 00 Hex.

11

Functions

Section 1-2

Example: CVM1/CV Series

DeviceNet Network

Communications Unit

node number 06

Communications Unit node number 02

	I/O Unit	#0	#1	#2	#0	#1	#2
	addresses
		16 inputs	8 outputs	16 inputs	16 inputs	4-point	16 outputs
						Analog
						Output
						Unit

Communications Unit	Output area			Input area
node number
CIO 1902	00 Hex	8 output bits for	CIO 2002	I/O Unit interface status
		Unit #1
CIO 1903	Unused		CIO 2003	for node number 02
CIO 1904	Unused		CIO 2004 16 input bits for Unit #0
CIO 1905	Unused		CIO 2005	16 input bits for Unit #2
CIO 1906			CIO 2006	I/O Unit interface status
CIO 1907	4 analog		CIO 2007	for node number 06
CIO 1908	outputs for		CIO 2008 16 input bits for Unit #0
	Unit #1
CIO 1909			CIO 2009	Unused
CIO 1910 16 output bits for Unit #2			CIO 2010	Unused

The unused words can be used as work bits.

Example: C200HX/HG/HE

Area allocated to Communications Unit for node number 02

Area allocated to Communications Unit for node number 06

DeviceNet Network	Communications Unit
	node number 12

Communications Unit node number 05

I/O Unit
addresses	#0	#1	#2	#3	#0
	32 outputs	4-point	16 inputs	16 inputs	16 inputs
		Analog
		Output Unit

Communications Unit
node number	Output area			Input area
CIO 55	32 output bits for		CIO 355	I/O Unit interface status
CIO 56	Unit #0		CIO 356	for node number 05
CIO 57			CIO 357	16 input bits for Unit #2
CIO 58	4 analog outputs		CIO 358	16 input bits for Unit #3
CIO 59	for Unit #1		CIO 359	Unused
CIO 60			CIO 360	Unused
CIO 61	Unused	(See	CIO 361	Unused
		note 1.)
CIO 62			CIO 362	I/O Unit interface status
CIO 63	4 analog outputs		CIO 363	for node number 12
CIO 64	for Unit #1		CIO 364	16 input bits for Unit #0
CIO 65			CIO 365	Unused
CIO 66 16 output bits for Unit #2			CIO 366	Unused

#1	#2
4-point	32 outputs
Analog

Output Unit

Area allocated to Communications Unit for node number 05

(See note 1.)

Area allocated to Communications Unit for node number 12

(See note 2.)

Note 1. The unused words between I/O areas that are used cannot be used as work bits. 2. The unused words (not between I/O areas that are used) can be used as work bits.

12

Functions	Section 1-2
User-set Allocation	The Configurator can be used to set the Communications Unit node number,
	first word, and number of bytes to allocate (allocation size) for input block 1
	and 2 and for output block 1 and 2, as shown in the following diagram.

Output block 1 or 2:

Output bits in the order I/O Units are connected on the I/O Unit interface

Input block 1 or 2:

I/O Unit interface status (two words), and input bits in the order I/O Units are connected on the I/O Unit interface

Output block 1 or 2

Input block 1 or 2

		First word	I/O Unit interface
		size
	First word		status
	Output bits on the	Allocation	Input bits on the
	I/O Unit interface
			I/O Unit interface

Allocation size

Example: CVM1/CV Series

DeviceNet Network

Communications Unit node number 06

Communications Unit node number 02

I/O Unit	#0	#1	# 2	#0	#1	#2
addresses
	16 inputs	8 outputs	16 inputs	16 inputs	4-point	16 outputs

Analog

Output Unit

Allocation settings for node number 02

First word:	CIO 1952
Allocation size:	2 bytes (1 word)

Allocation settings for node number 06

First word:	CIO 1954
Allocation size:	10 bytes (5 words)

Allocation settings for node number 02 First word: CIO 1904

Allocation size: 8 bytes (4 words)

Allocation settings for node number 06 First word: CIO 1901

Allocation size: 6 bytes (3 words)

Output block 2

CIO 1950

CIO 1951

	First word	CIO 1952	00 Hex	8output bits for
	of node			Unit #1
	number 02	CIO 1953
	First word	CIO 1954
	of node	CIO 1955	4 analog outputs
	number 06	CIO 1956
			for Unit #1
		CIO 1957
		CIO 1958	16 input bits for Unit #2

First word		Input block 1
of node	CIO 1900
number 06
	CIO 1901	I/O Unit interface status
Size of node	CIO 1902	for node number 06
number 02	CIO 1903	16 input bits for Unit #0
First word	CIO 1904	I/O Unit interface status
of node
	CIO 1905	for node number 02
number 02
Size of node	CIO 1906 16 input bits for Unit #0
number 06	CIO 1907 16 input bits for Unit #2

Size of node number 06

Size of node number 02

13

Functions

Section 1-2

Example: C200HX/HG/HE Series

	DeviceNet Network					Communications Unit
						node number 12
Communications Unit
node number 05
I/O Unit
addresses	#0	#1	#2	# 3	#0	#1	#2
	32 outputs 4-point		16 outputs	16 inputs	16 outputs 4-point		16 outputs
		Analog				Analog
		Output Unit				Output Unit
	Allocation settings for node number 05			Allocation settings for node number 05
	First word:	CIO 50		First word:		CIO 360
	Allocation size:	12 bytes (6 words)		Allocation size:		3 bytes (4 words)
	Allocation settings for node number 12			Allocation settings for node number 12
	First word:	CIO 120		First word:		CIO 363
	Allocation size:	10 bytes (5 words)		Allocation size:		8 bytes (3 words)

First word			Output block 1	First word		Input block 1
		CIO 50		of node	CIO 360
of node			32 output bits for			I/O Unit interface status
number 05		CIO 51	Unit #0	number 05	CIO 361	for node number 05	Size of node
		CIO 52		Size of node	CIO 362	16 input bits for Unit #2	number 05
		CIO 53	4 analog outputs	number 05	CIO 362	16 input bits for Unit #3
		CIO 54	for Unit #1	First word	CIO 363	I/O Unit interface status	Size of node
		CIO 55		of node	CIO 364	for node number 12
				number 12			number 12
					CIO 365 16 input bits for Unit #0
		CIO 120	Output block 2
First word
of node		CIO 121	4 analog outputs
number 12		CIO 122	for Unit #1	Size of node

CIO 123	number 12
CIO 124	16 output bits for Unit #2

14

Functions

Section 1-2

Allocation Precautions Note the following precautions when starting the DeviceNet Network.

Limits on the Total Number of Input and Output Points for a Master Unit

A maximum of 1,024 inputs and outputs can be controlled by one Communications Unit (DRT1-COM). The number of I/O points for each node, however, depends on the Master Unit. For example, with the CV-series Master Unit (CVM1-DRM21-V1) or the C200HX/HG/HE and C200HS Master Unit (C200HW-DRM21-V1), up to 512 inputs and up to 512 outputs can be used at each node. Therefore, connect I/O Units within a range that does not exceed the number of I/O points for each Master Unit node. The following table shows the I/O size of each Unit.

Unit model	Number of	Number of
	inputs	outputs
DRT1-COM	32 points	0 point
GT1-ID16(-1), GT1-ID16MX(-1), GT1-ID16ML(-1)*,	16 points	0 point
GT1-ID16DS(-1)*
GT1-OD16(-1), GT1-OD16MX(-1), GT1-OD16ML(-1)*,	0 points	16 points
GT1-OD16DS(-1)*, GT1-ROS16, GT1-ROP08
GT1-ID32ML(-1)	32 points	0 point
GT1-OD32ML(-1)	0 points	32 points
GT1-AD04*	64 points	0 points
GT1-AD08MX (With 8-input mode)	128 points	0 points
GT1-AD08MX (With 4-input mode)	64 points	0 points
GT1-DA04*, GT1-DA04MX	0 points	64 points
GT1-TS04T, GT1-TS04P (With Normal Mode)	64 points	0 points
GT1-TS04T, GT1-TS04P (With 2-decimal-place Mode)	128 points	0 points
GT1-CT01	48 points	48 points

The GT1-ROP08 (Relay Output Unit with Power Relay) has 8 actual outputs but, as a MULTIPLE I/O TERMINAL, the number of outputs allocated to the Master Unit is 16.

Calculation Example

When one GT1-DA04MX Analog Output Unit and three GT1-AD08 Analog Input Units are used, the total number of input points and output points is calculated as follows:

Total Number of Input Points:

Communications Unit (Status) + Analog Input Units x 3 = 32 points + 128 points x 3 = 416 points

Total Number of Output Points: Analog Output Units x 1 = 64 points

Reference

For information on dealing with other problems concerning the MULTIPLE I/O TERMINAL, refer to SECTION 7 Troubleshooting and Maintenance. For information on problems concerning the DeviceNet, refer to DeviceNet Operation Manual (W267).

1-2-4 I/O Unit Interface Status

The following I/O Unit interface status is maintained in the CPU Unit.

•I/O Unit connection information (I/O Unit interface status)

•Registered I/O Unit addresses

15

Functions Section 1-2

• Error I/O Unit addresses

As shown in the following diagram, the status consists of two words. The first two words of the Communications Unit allocation input area in the CPU Unit are allocated for this status. Include a program section in the CPU Unit to check this status and perform error processing.

0 wd	I/O Unit connection information
+1 wd	Error I/O Unit addresses	Registered I/O Unit addresses

I/O Unit Connection Information

	Bit
0 wd
1: Error (OR of bits 0 to 4)	1: Special I/O Unit Error
1: Refreshing I/O	1: Configuration Error
	1: I/O Unit Interface Error
	1: I/O Unit Power Supply Overload
	1: High-density I/O Unit Error

Bit	Flag name	Meaning	Content
15	Refreshing I/O	Refreshing I/O	1: Communications between the
			Communications Unit and I/O Units
			is normal.
			0: Communications error (no
			response is received from an I/O
			Unit)
14	Error	OR of bits 0 to 4	1: Any one of bits 0 to 4 is ON
			0: Bits 0 to 4 are all OFF
4	High-density	A high-density I/O Unit error was	1: Unit error
	I/O Unit Error	detected.	0: Unit normal
3	I/O Unit Power	An overcurrent to an I/O Unit	1: Overcurrent detected
	Supply Over-	was detected.	0: Normal
	load
2	I/O Unit Inter-	An I/O Unit interface error was	1: I/O Unit interface error
	face Error	detected.	0: Normal
		Data Transfer Error:
		In the I/O Unit interface, there
		was no response to a com-
		mand after the fixed time has
		elapsed. Alternatively, the
		response expected to be
		returned from the end I/O Unit
		(terminator) was not received.
		Too many I/O Units:
		Nine or more I/O Units are
		connected.
1	Configuration	The I/O configuration was	1: I/O configuration change during
	Error	changed when the Communica-	startup
		tions Unit was started.	0: No I/O configuration change during
			startup
0	Special I/O	An error occurred in a Special	1: Special I/O Unit error
	Unit Error	I/O Unit.	0: Special I/O Unit normal

16

Functions

Section 1-2

Abnormal I/O Unit Addresses and Registered I/O Unit Addresses

+1 wd

The bits corresponding to I/O Unit with errors are turned ON. Bits 8 to 15 correspond to addresses 0 to 7.

1: Error

0: No error, or not part of network

Bit

The bits corresponding to registered I/O Units are turned ON. Bits 0 to 7 correspond to addresses 0 to 7.

1: Registered

0: Not registered

1-2-5 I/O Configuration Changes

The I/O Unit interface automatically recognizes the I/O Unit configuration each time the Communications Unit is started up, and stores this as the normal configuration.

Note 1. If the I/O Unit configuration is changed while the Communications Unit is turned ON, a configuration error will occur. Do not change the I/O Unit configuration while power is being supplied to the Communications Unit.

2.If a configuration error occurs on the I/O Unit interface, I/O refreshing of all I/O Units will stop. Even if a configuration error occurs, communications with the DeviceNet Network will continue, using the initial I/O Unit configuration. An error processing program section must therefore be included in the CPU Unit to regularly check whether or not a configuration error has occurred (status bit 1) and to process abnormal I/O Unit addresses.

If the I/O Unit configuration is changed, perform the following operations, according to the DeviceNet area allocation method. For details about I/O allocation, refer to DeviceNet Operation Manual (W267).

Default Allocations	Because the allocation size of the Communications Unit changes together
	with changes to the I/O Unit configuration, a verification error will occur on
	DeviceNet if the scan list is enabled, as follows:
	• Master Unit 7-segment display will show d6, Slave I/O size mismatch.
	• Master status bits 14 and 7 will turn ON.
	Perform the following operations, according to the status of the input/output
	areas.
	Allocation Areas Do Not Overlap with Other Slaves
	Remote I/O communications will be performed unchanged with the new con-
	figuration. Check the Verification Error Bit and, if required, perform processing
	to disable the allocated words in the CPU Unit. Also check the number of
	points for the changed I/O Unit and its allocation area on the I/O Unit inter-
	face, and re-register the scan list (first set the Scan List Enable software
	switch to OFF, and then set it to ON after checking the I/O size).
	Allocation Areas Overlap with Other Slaves
	In this case, I/O area duplication will also occur on the DeviceNet, as follows:
	• Master Unit 7-segment display will show d0, I/O area duplication.
	• Master status bits 14 and 4 will turn ON.
	Check the Verification Error Bit, and perform processing to disable the allo-
	cated words in the CPU Unit. Also change the Slave node number so that the
	allocation area does not overlap with any other, and re-register the scan list
	(first set the Scan List Enable software switch to OFF, and then set it to ON
	after checking the I/O size).
Note	If the scan list is disabled, there will be no changes made in the DeviceNet
	Master Unit, even if the Communications Unit input/output sizes change. Be
	sure to use the Scan List Enable Mode for normal operations.

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