Mitsubishi Electronics QJ71DN91 User Manual

MITSUBISHI ELECTRIC

MELSEC System Q

Programmable Logic Controllers

User's Manual

DeviceNet Master-Slave Module

QJ71DN91

GX Configurator-DN

Art. no.: 139835 01 05 2003

SSH (NA)-080143 Version F

MITSUBISHI ELECTRIC INDUSTRIAL AUTOMATION

• SAFETY PRECAUTIONS •

(Always read these instructions before using this equipment.)

Before using this product, please read this manual and the relevant manuals introduced in this manual carefully and pay full attention to safety to handle the product correctly.

The instructions given in this manual are concerned with this product. For the safety instructions of the programmable controller system, please read the User's Manual of the CPU module to use.

In this manual, the safety instructions are ranked as "DANGER" and "CAUTION".

!DANGER

!CAUTION

Indicates that incorrect handling may cause hazardous conditions, resulting in death or severe injury.

Indicates that incorrect handling may cause hazardous conditions, resulting in medium or slight personal injury or physical damage.

Note that the ! CAUTION level may lead to a serious consequence according to the circumstances. Always follow the instructions of both levels because they are important to personal safety.

Please save this manual to make it accessible when required and always forward it to the end user.

[DESIGN PRECAUTIONS]

!DANGER

•If a communications error occurs to a device network, the node in such a communications error will be in a state as follows:

(1)The master node (QJ71DN91) maintains input data which had been received from the slave node before the error occurred.

(2)Whether the slave node's output signal is turned off or maintained is determined by the slave node's specifications or the parameters set at the master node. When using QJ71DN91 as a slave node, the entered data from master node before the faulty node is maintained.

By referring to communications states of the slave node, arrange an interlock circuit in a sequential program and provide safety mechanism externally of the slave node in order the system to operate safely.

!CAUTION

•Do not bunch the control wires or communication cables with the main circuit or power wires, or install them close to each other.

They should be installed 300 mm (11.8 inch) or more from each other. Not doing so could result in noise that may cause malfunction.

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[INSTALLATION PRECAUTIONS]

!CAUTION

•Use the PLC in an environment that meets the general specifications contained in the CPU User's Manual to use.

Using this PLC in an environment outside the range of the general specifications may cause electric shock, fire, malfunction, and damage to or deterioration of the product.

•When installing the module, securely insert the module fixing tabs into the mounting holes of the base module while pressing the installation lever located at the bottom of the module downward. Improper installation may result in malfunction, breakdown or dropping out of the module. Securely fix the module with screws if it is subject to vibration during use.

•Tighten the screws within the range of specified torque.

If the screws are loose, it may cause fallout, short circuits, or malfunction.

If the screws are tightened too much, it may cause damage to the screw and /or the module, resulting in fallout, short circuits or malfunction.

•Switch all phases of the external power supply off when mounting or removing the module. Not doing so may cause electric shock or damage to the module.

•Do not directly touch the conductive area or electric components of the module.

Doing so may cause malfunction or failure in the module.

[WIRING PRECAUTIONS]

!DANGER

•Make sure to shut off all the phases of the external power supply before starting installation or wiring. Otherwise, the personnel may be subjected to an electric shock or the product to a damage.

!CAUTION

•Be careful not to let foreign matters such as sawdust or wire chips get inside the module. These may cause fires, failure or malfunction.

•The top surface of the module is covered with protective film to prevent foreign objects such as cable offcuts from entering the module when wiring.

Do not remove this film until the wiring is complete.

Before operating the system, be sure to remove the film to provide adequate heat ventilation.

•Be sure to fix cables leading from the module by placing them in the duct or clamping them. Unless the cables are placed with a duct or clamped, the module or cables could be broken by swinging or moving of the cables or unintentional pulling to cause an operation error resulting from a contact error.

•Do not pull cables by holding them with a hand for removing the cables that are connected to the module. To remove a cable having a connector, hold the connector connected to the module with a hand. To remove a cable not having a connector, loosen the screws fastening to connect the module. The cables being pulled while they are still connected to the module could break the module or cables, or cause an operation error resulting from a contact error.

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[CAUTIONS ON STARTUP AND MAINTENANCE]

!DANGER

•Always turn off all external power supply phases before touching any terminals. Failure to do this may result in malfunction.

•Always turn of all external power supply phases before cleaning or tightening the terminal screws.

Failure to do this may result in malfunction.

•Do not disassemble or modify any module.

This will cause failure, malfunction, injuries, or fire.

•Always turn off all external power supply phases before mounting or dismounting the module. Failure to do this may result in malfunction or damage to the module.

•Always make sure to touch the grounded metal to discharge the electricity charged in the body, etc., before touching the module.

Failure to do so may cause a failure or malfunctions of the module.

[DISPOSAL PRECATION]

!CAUTION

•Dispose of this product as industrial waste.

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REVISIONS

				The manual number is given on the bottom left of the back cover.
Print Date	Manual Number			Revision
Dec., 2000	SH (NA)-080143-A	First Printing
Jun., 2001	SH (NA)-080143-B
		Addition
		Section 2.3, 2.4
		Delete
		Section 2.2.1, 2.2.2
		Correction
		SAFETY PRECAUTIONS, About the Generic Terms and Abbreviations,
		Product Configuration, Section 2.2, 2.4, Section 6.2, 6.2.1, 6.2.2, 6.3.3,
		6.5
Feb., 2002	SH (NA)-080143-C
		Correction
		About the Generic Terms and Abbreviations, Section 2.2, Section 6.2.1,
		6.2.2
Dec., 2002	SH (NA)-080143-D
		Addition
		Section 2.5
		Correction		Section 3.3.2, 3.4.1, Section 6.1, 6.2.1, 6.3.2, 6.4, 6.5,
		Section 2.2,
		Section 9.2.1, 9.2.2
Feb., 2003	SH (NA)-080143-E
		Correction
		SAFETY PRECAUTIONS, INTRODUCTION, CONTENTS, Section 6.2.2,
		Section 6.3.3, Section 6.4, Section 6.5
May., 2003	SH (NA)-080143-F
		Correction
		Section 6.3.1

Japanese Manual Version SH-080125-F

This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.

2000 MITSUBISHI ELECTRIC CORPORATION

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INTRODUCTION

Thank you for purchasing the MELSEC-Q series PLC.

Before using the equipment. please read this manual carefully to develop full familiarity with the functions and performance of the Q series PLC you have purchased, so as to ensure correct use.

	CONTENTS
SAFETY PRECAUTIONS..............................................................................................................................		A- 1
REVISIONS....................................................................................................................................................		A- 4
INTRODUCTION............................................................................................................................................		A- 5
CONTENTS....................................................................................................................................................		A- 5
Conformation to the EMC Directive and Low Voltage Instruction ................................................................		A-	8
About the Generic Terms and Abbreviations ................................................................................................		A- 8
Product Configuration ....................................................................................................................................		A-	9
1 OVERVIEW		1- 1 to 1- 2
1.1	Features ...................................................................................................................................................	1-	1
2 SYSTEM CONFIGURATION		2- 1 to 2- 6
2.1	Overall Configuration ...............................................................................................................................	2-	1
2.2	Applicable Systems..................................................................................................................................	2-	3
2.3	How to Check the Function Version, Serial No. and Software Version .................................................	2-	4
2.4 About Use of the QJ71DN91 with the Q00J/Q00/Q01CPU ...................................................................		2- 5
2.5	About Additional Function........................................................................................................................	2-	6
2.6	Compatible DeviceNet Products from Other Manufacturers ..................................................................	2- 6
3 SPECIFICATIONS		3- 1 to 3- 51
3.1	Performance Specifications.....................................................................................................................	3-	1
3.1.1 Maximum transmitting distance when thick and thin cables coexist ...............................................		3-	1
3.2	Functions..................................................................................................................................................	3-	2
3.2.1 Master function (I/O communication function)..................................................................................		3-	2
3.2.2 Master function (Message communication function) .......................................................................		3-	8
3.2.3 Slave function (I/O communication function)....................................................................................		3-11
3.3	I/O Signals for the PLC CPU ...................................................................................................................	3-13
3.3.1 I/O signal list ......................................................................................................................................		3-13
3.3.2 Details of the I/O signals ...................................................................................................................		3-14
3.4	Buffer Memory..........................................................................................................................................	3-24
3.4.1 Buffer memory list .............................................................................................................................		3-24
3.4.2 Buffer memory details .......................................................................................................................		3-26
3.5	Communication Performance..................................................................................................................	3-50
3.5.1 Scan time...........................................................................................................................................		3-50
3.5.2 Communication cycle........................................................................................................................		3-51
3.5.3 Transmission delays .........................................................................................................................		3-51

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4 SETUP AND PROCEDURES BEFORE OPERATION		4- 1 to 4- 14
4.1	Setup and Procedures before Operation ................................................................................................	4- 1
4.1.1 When using the master function .......................................................................................................		4-	1
4.1.2 When using the slave function..........................................................................................................		4-	2
4.1.3 When using both the master function and slave function ................................................................		4- 3
4.2	Loading and Installation...........................................................................................................................	4-	4
4.2.1 Handling precautions ........................................................................................................................		4-	4
4.2.2 Installation environment ....................................................................................................................		4-	4
4.3	Component Names and Settings ............................................................................................................	4- 5
4.3.1 Meanings of the LED displays ..........................................................................................................		4- 6
4.3.2 Node number setting switch..............................................................................................................		4-	7
4.3.3 Mode switch.......................................................................................................................................		4- 7
4.4	Hardware Test..........................................................................................................................................	4- 8
4.5	Connecting the Communication Cables to the QJ71DN91 ....................................................................	4- 9
4.6	Communication Test ...............................................................................................................................	4- 10
4.7	Instructions for Connecting the Network Power Supply ........................................................................	4- 11
4.7.1 Network power supply unit installation position...............................................................................		4- 11
4.7.2 Calculating network power supply unit installation position and current capacity..........................		4- 12
5 PARAMETER SETTINGS		5- 1 to 5- 6
5.1	Description of Parameter Settings...........................................................................................................	5-	1
5.1.1 Parameters for the master function ..................................................................................................		5-	1
5.1.2 Parameters for the slave function.....................................................................................................		5-	2
5.1.3 Common parameters for the master/slave functions.......................................................................		5-	2
5.2	Setting Using the Sequence Program.....................................................................................................	5- 2
5.3	Setting Using the Auto Configuration Function.......................................................................................	5-	3
6 UTILITY PACKAGE (GX Configurator-DN)		6- 1 to 6- 21
6.1	Functions of the Utility Package ..............................................................................................................	6-	1
6.2	Installing and Uninstalling the Utility Package.........................................................................................	6-	2
6.2.1 User precautions ...............................................................................................................................		6-	2
6.2.2 Operating environment......................................................................................................................		6-	4
6.3	Explanation of Utility Package Operation................................................................................................	6-	5
6.3.1 How to perform common utility package operations........................................................................		6-	5
6.3.2 Overview of operation .......................................................................................................................		6-	8
6.3.3 Starting the intelligent function module utility ..................................................................................		6- 10
6.4	Auto Refresh Settings .............................................................................................................................	6- 12
6.5	Monitor/Test ............................................................................................................................................	6- 14
6.6	Flash ROM Settings................................................................................................................................	6- 20

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7 PROGRAMMING WHEN EXECUTING THE MASTER FUNCTION		7- 1 to 7- 12
7.1	Precautions on Programming ..................................................................................................................		7- 1
7.2	System Configuration...............................................................................................................................		7-	2
7.3	Setting Parameters ..................................................................................................................................		7-	4
7.3.1 Parameter settings using the sequence program ............................................................................			7- 4
7.3.2 Creating parameters using auto configuration .................................................................................			7-	6
7.3.3 Saving parameters in flash ROM......................................................................................................			7- 6
7.4	I/O Communication with Slave Nodes.....................................................................................................		7- 7
7.5	Performing Message Communication .....................................................................................................		7- 8
7.5.1 Example of message communication read ......................................................................................			7- 8
7.5.2 Example of message communication write......................................................................................			7- 9
7.6	Obtaining Error Information ....................................................................................................................		7- 10
7.7	Allocating Transmission/Reception Data Storage Devices for Future Expansion................................		7- 11
8 PROGRAMMING WHEN EXECUTING THE SLAVE FUNCTION		8- 1 to 8- 4
8.1	System Configuration...............................................................................................................................		8-	1
8.2	Setting Parameters Using the Sequence Program.................................................................................		8- 2
8.3	I/O Communication with the Master Node ..............................................................................................		8- 3
8.4	Obtaining Error Information .....................................................................................................................		8-	4
9 TROUBLESHOOTING		9- 1 to 9- 12
9.1	Items to Check When an Error Occurs ...................................................................................................		9- 2
9.1.1 Checking the LEDs ...........................................................................................................................			9- 2
9.1.2 When communication with all slave nodes cannot be performed (using the master function)			...... 9-	3
9.1.3 When communication with a specific slave node cannot be performed
	(using the master function)................................................................................................................		9-	4
9.1.4 When communication with the master node cannot be performed (using the slave function).......			9- 5
9.2	Error Codes ..............................................................................................................................................		9- 6
9.2.1 Communication error codes..............................................................................................................			9- 6
9.2.2 Execution error codes of message communication (using the master function only) ....................			9-	9
9.3	Verifying the QJ71DN91 Status on the GX Developer System Monitor ...............................................		9- 11
APPENDIX		App- 1 to App- 7
Appendix 1 External Dimension Diagram .................................................................................................			App- 1
Appendix 2 Differences between the QJ71DN91 and the AJ71DN91/A1SJ71DN91 .............................			App- 2
Appendix 3 Parameter Setting Sheet (For the Master Function) .............................................................			App-	3
Appendix 4 Parameter Setting Sheet (For the Slave Function) ...............................................................			App-	4
Appendix 5 List of Communication Parameters of Slave Nodes Manufactured by Various
	Manufacturers .........................................................................................................................		App- 5
Appendix 6 EDS File of the QJ71DN91 ....................................................................................................			App- 6
INDEX		Index- 1 to Index- 2

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Conformation to the EMC Directive and Low Voltage Instruction

For details on making Mitsubishi PLC conform to the EMC directive and low voltage instruction when installing it in your product, please see Chapter 3, "EMC Directive and Low Voltage Instruction" of the User's Manual (Hardware) of the PLC CPU to use.

The CE logo is printed on the rating plate on the main body of the PLC that conforms to the EMC directive and low voltage instruction.

BY making this product conform to the EMC directive and low voltage instruction, it is not necessary to make those steps individually.

About the Generic Terms and Abbreviations

Unless otherwise specified, this manual uses the following generic terms and abbreviations to explain QJ71DN91 DeviceNet Master·Slave Module.

	Generic Term/Abbreviation	Description
		Generic product name of the product types SWnD5C-GPPW-E, SWnD5C-GPPW-EA,
	GX Developer	SWnD5C-GPPW-EV and SWnD5C-GPPW-EVA.
		"n" in the model is 4 or greater.
	QCPU (Q mode)	Generic term for Q00JCPU, Q00CPU, Q01CPU, Q02CPU, Q02HCPU, Q06HCPU,
		Q12HCPU, Q25HCPU, Q12PHCPU, Q25PHCPU
	GX Configurator-DN	Abbreviation for DeviceNet Master-Slave Module setting/Monitor Tool GX
		Configurator-DN (SW1D5C-QDNU-E)
	QJ71DN91	Abbreviation for QJ71DN91 DeviceNet Master-Slave Module
	Personal computer	IBM PC/AT® or compatible computer with DOS/V.

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Product Configuration

The following is a list of the components in this product configuration.

Model name	Product name			Quantity
QJ71DN91	QJ71DN91 DeviceNet master-slave module			1
	Terminal resistor 121Ω , 1/4W			2
	Connector			1
SW1D5C-QDNU-E	GX Configurator-DN Version 1	(1-license product)	(CD-ROM)	1
SW1D5C-QDNU-EA	GX Configurator-DN Version 1	(Multiple-license product)	(CD-ROM)	1

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1 OVERVIEW

MELSEC-Q

1 OVERVIEW

1		This manual explains the specifications and name of each component of the
		QJ71DN91 DeviceNet master/slave module, which is used in combination with the
		MELSEC-Q Series PLC CPU.
		Please see DeviceNet Specification Manual (Release 2.0), Volumes 1 and 2, for the
		specifications of DeviceNet.
		DeviceNet is a registered trademark of Open DeviceNet Vendor Association, Inc.
		POINT
		Most of the DeviceNet products on the market are assumed to be compatible.
		However, compatibility with the products of other manufacturers is not guaranteed.
	1.1 Features

This section explains the features of the QJ71DN91.

(1)The module conforms to the DeviceNet Specifications Manual (Release 2.0).

(2)The module can function as a master node, slave node, or master/slave node of DeviceNet.

Master station Slave side M S

I/O communication between the master station and slave station is possible. Communication is not possible.

QJ71DN91

: DeviceNet slave master

(Node No. 5)

M

M

Master made by other manufacturer

(Node No. 10)	M

S
		24V power
	(Node No. 2)	supply

S

QJ71DN91 slave

(Node No. 3)

S

(Node No. 4)

S

QJ71DN91 master + slave (Node No. 6)

S

M

S

(Node No. 7)

S (Node No. 8)

S

QJ71DN91

slave

(Node No. 9)

QJ71DN91 slave (Node No. 1)

(3)The parameters of QJ71DN91 can be set by any of the following three methods:

•Setting the parameters using GX Configurator-DN

•Setting the parameters using the TO instruction of a sequence program

•Setting the parameters using auto configuration

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1 OVERVIEW

MELSEC-Q

(4) When the module functions as a master node of DeviceNet, I/O communication

and message communication with a DeviceNet slave node are possible.

1

(5) When the module functions as a master node of DeviceNet, the module can

communicate with a maximum of 63 slave nodes.

(6) Selection is available from four types of I/O communication methods when this

module functions as a master node in DeviceNet. They are polling, bit strobe,

change-of-state and cyclic which are defined in DeviceNet.

However, only one type of communication method can be selected for each slave

node.

QJ71DN91

Polling

Change-of-state

DeviceNet network

Bit strobe

Cyclic

Slave node 1

Slave node 2

Slave node 3

Slave node 4

For I/O communication, see Section 3.2.1.

(7)When the module functions as a master node of DeviceNet, an I/O communication with input of 256 words (4,096 points) and output of 256 words (4,096 points) can be performed.

(8)When the module functions as a master node of DeviceNet, a message communication of 240 byte data can be performed at one time.

(9)When the module functions as a slave node of DeviceNet, I/O communication with input of 64 words (1,024 points) and output of 64 words (1,024 points) can be performed.

(10)When the module functions as a slave node of DeviceNet, I/O communication can be performed via polling.

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2 SYSTEM CONFIGURATION

MELSEC-Q

2 SYSTEM CONFIGURATION

This chapter explains the system configuration of DeviceNet.

2.1 Overall Configuration

2

A total of 64 modules including a master node, slave nodes and a master/slave node

can be connected.

Each node is connected via a tap from the trunk line or directly to the trunk line.

The following shows an example of a system configuration:

Master node

Drop line

Terminal resistor

Network power-supply

module (24V DC)

Trunk line (main line)

(121Ω , 1/4W)

Slave node

Slave node

Terminal resistor

Tap

Power supply tap

(121Ω , 1/4W)

Slave node

Slave node

Drop line (branch line)

Slave node

1)The QJ71DN91 can be used as a master node, a slave node or a master/slave node.

2)A combined maximum of 64 master node and slave nodes can be connected.

3)There is no need to connect the master node and slave nodes in the order of node number.

4)The network cable consists of trunk line (main line) and drop lines (branch lines).

Terminal resistors are required on both sides of the trunk line.

5)It is necessary to connect the network power supply in order to supply the power supply to the communication circuit in addition to the operating power supply of each node.

6)Use the terminal resistors included in the package, or they must be furnished by the user.

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2SYSTEM CONFIGURATION

(1)Network specification

MELSEC-Q

The following explains the network specifications of DeviceNet that uses the QJ71DN91.

(a)Communication speed

The communication speed can be selected from 125kbaud, 250kbaud, or 500kbaud using the mode switch of the QJ71DN91.

The maximum cable length varies depending on the communication speed. 2 See Section 3.1, "Performance Specifications" for details.

(b)Supplying power to the network

The following describes the method of supplying network power to each node:

1)Connect a dedicated power supply tap to the trunk-line cable and install the network power-supply module.

2)The power is supplied from the network power-supply module to each node via the network cable.

Remarks

Inquire to ODVA about the following devices required to construct a DeviceNet network.

•Network power-supply module

•Power supply tap

•Tap

•Terminal resistor

•Network cable

Contact at ODVA is as follows:

Open DeviceNet Vendor Association, Inc. Address

20423 State Road 7 - Suite 499 - Boca Raton, FL 33498 U.S.A. TEL. [phone]

FAX. [phone] or [phone]

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2 SYSTEM CONFIGURATION

2.2 Applicable Systems

MELSEC-Q

This section describes the system configuration for the QJ71DN91.

(1) Applicable module and the number of modules that can be installed

The following are the CPU module in which the QJ71DN91 can be installed and the number of modules that can be installed.

	Applicable module		Number of modules that	Remarks
			can be installed
		Q00JCPU	Maximum 16	(	1)
		Q00CPU	Maximum 24
		Q01CPU
		Q02CPU
CPU module		Q02HCPU		Can be installed in Q mode only
		Q06HCPU	Maximum 64
				( 1)
		Q12HCPU
		Q25HCPU
		Q12PHCPU	Maximum 64	(	1)
		Q25PHCPU

1 See User's Manual (Function Explanation, Program Fundamentals) for the CPU module to use.

(2) Base unit in which the conversion module can be installed

The QJ71DN91 can be installed in any I/O slot (2) of the base unit. However, a power shortage may occur depending on the combination with other installed modules and the number of modules used, so always take into consideration the power supply capacity when installing modules.

2 Limited to the range of the number of I/O points in the CPU module.

(3) Compatibility with a multiple PLC system

First read the QCPU (Q mode) (Function Explanation, Program Fundamentals) User's Manual if the QJ71DN91 is used with a multiple PLC system.

(a)Compatible QJ71DN91

Use a QJ71DN91 with function version B or higher if using the module in a multiple PLC system.

(b)Intelligent function module parameters

Perform PLC write of the intelligent function module parameters to the control PLC of the QJ71DN91 only.

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2SYSTEM CONFIGURATION

(4)Software packages supported

MELSEC-Q

Correspondence between systems which use QJ71DN91s and software packages are as shown below.

The GX Developer is necessary when using a QJ71DN91.

			Software Version
			GX Developer	GX Configurator-DN 2
	Q00J/Q00/	Single PLC system	Version 7 or later	Version 1.10L or later
	Q01CPU	Multiple PLC system	Version 8 or later
	Q02/Q02H/	Single PLC system	Version 4 or later	Version 1.00A or later
	Q06H/Q12H/
	Q25HCPU	Multiple PLC system	Version 6 or later	Version 1.10B or later
	Q12PH/	Single PLC system	Version 7.10L or later	Version 1.13P or later
	Q25PHCPU	Multiple PLC system

2 Version 1.14Q or earlier is incompatible with Each Node Communication Error Status (addresses 1C0H to 1C3H/448 to 451). Use the product of Version 1.15R or later.

(5) Precautions on wiring

In order to avoid the effects of noise, the DeviceNet communication cable, power cable and signal lines for the I/O module should be installed in such a way that they are sufficiently away from each other.

(6) Remote operation is not allowed from other DeviceNet node

Each DeviceNet node on DeviceNet cannot read/write/monitor the sequence program or data of the PLC CPU where the QJ71DN91 is installed.

2.3 How to Check the Function Version, Serial No. and Software Version

This section describes how to check the function version and serial No. of the

QJ71DN91 and the GX Configurator-DN software version.

(1)How to check the function version and serial No. of the QJ71DN91

(a)To check the version using the "SERIAL column of the rating plate" located on the side of the module

Serial No. (first 5 digits)

Function version

03052

(b)To check the version using the GX Developer See Section 9.3 of this manual.

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2 SYSTEM CONFIGURATION

MELSEC-Q

(2) How to check the GX Configuration-DN software version

The GX Configurator-DN software version can be checked in GX Developer's

"Product information" screen.

[Startup procedure]

GX Developer "Help" Product information

Software version

(In the case of GX Developer Version 7)

2.4 About Use of the QJ71DN91 with the Q00J/Q00/Q01CPU

Here, use of the QJ71DN91 with the Q00J/Q00/Q01CPU is explained.

(1)Number of QJ71DN91 that can be installed when the Q00J/Q00/

Q01CPU is used.

See item 2.2 concerning the number of QJ71DN91 that can be installed when the

Q00J/Q00/Q01CPU is used.

(2) Limitations when using the Q00J/Q00/Q01CPU

When using Q00J/Q00/Q01CPU, use QJ71DN91 which function version is B and first 5 digits of the serial No. is 03052 or later.

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2 SYSTEM CONFIGURATION

MELSEC-Q

2.5 About Additional Function

The added function is described below.

Function	Serial No.	Function Outline	Reference Section
Addition of Each Node Communication	First five digits of	Indicates whether an I/O
Error Status (addresses 01C0H to 01C3H	serial No. are	communication error has	Section 3.4.1 (10)
/448 to 451)	04102 or later	occurred or not in each node.

POINT

Refer to Section 2.3 for the way to confirm the serial No.

2.6 Compatible DeviceNet Products from Other Manufacturers

It is assumed that most of the DeviceNet products on the market are compatible.

However, compatibility with the products of other manufacturers is not guaranteed.

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3 SPECIFICATIONS

MELSEC-Q

3 SPECIFICATIONS

3.1 Performance Specifications

This section explains the performance specifications for QJ71DN91, I/O signals for

PLC CPU and specifications for buffer memory.

See the PLC CPU User's Manual to be used for the general specifications for

QJ71DN91.

Item

Specifications

Node type

Device net master (Group 2 only client)

3

Node numbers which can be set

0 to 63

Number of

Message connection

63

When

connections

that be

I/O connection

63 (polling, bit strobe, change of state, cyclic)

master

created

I/O

Send

Max. 4096 points (512 bytes), max. 256 bytes per 1 node

function

Amount of

communica-

Receive

Max. 4096 points (512 bytes), max. 256 bytes per 1 node

tion

communica-

Message

Send

Max. 240 bytes

tion data

communica-

Receive

Max. 240 bytes

specifications

tion

Node type

Device net slaves (Group 2 server)

Setting possible node number

0 to 63

Number of

When slave

connections

I/O connection

1 (polling)

Communication

function

that can be

created

Amount of

I/O

Send

Max. 1024 points (128 bytes)

communica-

communica-

Receive

Max. 1024 points (128 bytes)

tion data

tion

Communications speed

One speed can be selected from 125 kbps, 250 kbps and 500kbps.

Maximum transmitting distance of

Length of drop line

Communic

trunk line

ations

Thick

Thin

Thick and

speed

thin cables

Maximum

Total

Maximum cable length

Cables

Cables

coexist

125 kbaud

500 m

156 m

250 kbaud

250 m

100 m

See 3.1.1

6 m

78 m

500 kbaud

100 m

39 m

Current consumption required on the network

0.03 A

Number of times to write flash ROM

Max. 100000 times

No. of I/O occupied points

32 points (I/O allocation: Intelligent 32 points)

5 V DC internal current consumption

0.17 A

Weight

0.11 kg

: The maximum cable length complies with that in the device net specification (Release 2.0) Volumes 1 and 2.

3.1.1 Maximum transmitting distance when thick and thin cables coexist

The table below lists both the maximum transmitting distance when thick and thin cables coexist.

	Communication speed	Maximum transmitting distance of trunk line when thick
		and thin cables coexist
	125 kbaud	Thick cable length + 5 Thin Cable length < 500 m
	250 kbaud	Thick cable length +2.5 Thin cable length < 250 m
	500 kbaud	Thick cable length + Thin cable length < 100 m

3 - 1

3 - 1

3 SPECIFICATIONS

3.2 Functions

This section explains the functions of the QJ71DN91.

MELSEC-Q

3.2.1 Master function (I/O communication function)

The I/O communication function executes the I/O data communication with each slave
node.
In the I/O communication function, the connection type can be set according to the
specification of the slave node.
There are four connection types: polling, bit strobe, change-of-state, and cyclic. The
connection type can be set with a parameter.					3
(1) When GX Configurator-DN is used
	The following explains the I/O communication function when the GX
	Configurator-DN is used.
	PLC CPU	QJ71DN91	Slave node

		SET Y11			1)	I/O communication
	3)					request	2)
						0700H
		X
						Master function
						receive	Transmission
						data area
						07FFH
				4)		0900H	5)
		Y
						Master function
						transmit	Reception
						data area
						09FFH

[I/O communication]

1)When the I/O communication request (Y11) is set, the I/O communication with each slave node starts. It is not necessary to set Y11, however, when the auto communication start is set with a parameter.

[Reception data]

2)The input status from each slave node is automatically stored in the "master function reception data" area of the buffer memory in the QJ71DN91.

3)The input status stored in the "master function reception data" area of the buffer memory is loaded onto the PLC CPU by the auto refresh setting.

[Transmission data]

4)The ON/OFF information to be sent to the slave node is written into the "master function transmission data" area of the buffer memory by the auto refresh setting.

5)The ON/OFF information stored in the "master function transmission data" area is automatically sent to a slave node.

3 - 2

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3 SPECIFICATIONS

MELSEC-Q

(2)When the sequence program is used

The following explains the I/O communication function when the sequence program is used.

PLC CPU

QJ71DN91

Slave node

1)I/O communication

SET Y11

request

3)

0700H

2)

FROM

Master function

X01

receive

Transmission

I/O communication

data area

in progress

07FFH

TO

4)

0900H

3)

Master function

X01

transmit

Reception

I/O communicating

data area

09FFH

[I/O communication]

1)When the I/O communication request (Y11) is set, the I/O communication with each slave node starts. It is not necessary to set Y11, however, when the auto communication start is set with a parameter.

[Reception data]

2)The input status from each slave node is automatically stored in the "master function receive data" area of the buffer memory in the QJ71DN91.

3)The input status stored in the "master function receive data" area of the buffer memory is loaded onto the PLC CPU by the FROM instruction of the sequence program.

[Transmission data]

4)The ON/OFF information to be sent to the slave node is written into the "master function transmit data" area of the buffer memory by the TO instruction of the sequence program.

5)The ON/OFF information stored in the "master function transmit data" area is automatically sent to the slave node.

3 - 3

3 - 3

3 SPECIFICATIONS

MELSEC-Q

(3) Overview of each connection type

The following explains an overview of each connection type used during the I/O communication.

(a) Polling

As shown in the following diagram, the communication method by which the communication with each slave node is repeated, as described from 1) to 6), is the polling communication. The connection that uses this communication is the polling connection.

1)The master node transmits the output data.

2)The slave node transmits input data by setting 1) to trigger.

3)The master node transmits the output data.

4)The slave node transmits input data by setting 3) to trigger.

5)The master node transmits the output data.

6)The slave node transmits input data by setting 5) to trigger.

Master node

1)

4)

6)

3)	5)
2)

Slave node

3 - 4

3 - 4

3 SPECIFICATIONS

MELSEC-Q

(b) Bit strobe

As shown in the following diagram, the communication method by which the communication with each slave node is repeated, as described from 1) to 4), is the bit strobe communication. The connection that uses this communication is the bit strobe connection.

1)Output information of a maximum of one bit is transmitted simultaneously to each slave node.

2)The slave node transmits the input data by setting the transmission of

1)to trigger.

3)The slave node transmits the input data by setting the transmission of

1)to trigger.

4)The slave node transmits the input data by setting the transmission of

1)to trigger.

Master node

4)

2)

1)

3)

Slave node

3 - 5

3 - 5

3 SPECIFICATIONS

MELSEC-Q

(c) Change-of-state

As shown in the following diagram, the communication method that executes the communication of [1] and [2] as the I/O data changes is the change-of-state communication, and the connection that uses this communication is the change-of-state connection.

No data transmission is performed unless the I/O data is changed.

1)When the output data of the master node changes, the data is sent to the slave node.

2)When the input data of the slave node changes, the data is sent to the master node.

There is no concept of the network scan in the change-of-state communication.

Master node

1)2)

Slave node

3 - 6

3 - 6

3 SPECIFICATIONS

MELSEC-Q

(d) Cyclic

As shown in the following diagram, the communication method that regularly repeats the communication of [1] and [2] is the cyclic communication, and the connection that uses this communication is the cyclic connection.

1)The data of the master node is sent to the slave node.

2)The data of the slave node is sent to the master node.

The cycle of the cyclic communication can be specified for each slave node.

Specify the cycle of the cyclic communication in the following parameter items:

Transmission cycle from master node: Production inhibit time Transmission cycle from slave node: Expected packet rate

There is no concept of the network scan in the cyclic communication.

Master node

1)2)

Slave node

3 - 7

3 - 7

3 SPECIFICATIONS

3.2.2 Master function (Message communication function)

MELSEC-Q

The message communication function is used to get and set the attribute data of a slave node.

(1) Getting attributes

PLC CPU

QJ71DN91

Slave node (MAC ID)

1)

0110H

Message

2)

Class

TO

communication

Instance

011FH command area

2)

Message

Attribute

SET

Y12

communication

request

Attribute

Instance

Attribute

6)

0120H

Message

3)

FROM

communication

X02 X05

012FH

result area

Class

0130H

Message

Instance

communication

01A7H

data area

Attribute

4)

Message

communication

Instance

FROM

complete

Attribute

X02 X05

5)

Message communication

Attribute

completion

Attribute

: In DeviceNet, the area used for reading and writing via communication is specified by the numbers representing the class ID, instance ID, and attribute ID. For details, refer to the manual of each slave node.

1)The TO instruction of the sequence program sets to get attributes in the "message communication command" area of the buffer memory.

2)When the message communication request (Y12) is turned ON by the sequence program, the data, which is set in the "message communication command" area in the buffer memory, is sent to the slave node and the message communication starts.

3)When the QJ71DN91 receives data from the slave node, it is processed as follows:

•The specific data of the slave node that is set in the "message communication command" area is stored in the "message communication data" area of the buffer memory.

•The processing result of message communication is stored in the "message communication result" area of the buffer memory.

4)The message communication is completed when the processing result is stored in the "message communication result" area of the buffer memory, and the message communication completion (X02) is automatically turned ON.

5)Upon normal completion, the data in the slave node, which is stored in the "message communication data" area of the buffer memory, is loaded onto the PLC CPU by the FROM instruction of the sequence program.

6)If the message communication error signal (X05) is turned ON, the FROM instruction reads the contents of the "message communication result" area, and the cause of the error is verified.

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3SPECIFICATIONS

(2)Setting attributes

MELSEC-Q

PLC CPU						QJ71DN91		Slave node (MAC ID)
				1)	0110H	Message	3)	Class
	TO					communication		Instance
					011FH command area
									Attribute
					0130H
2)						Message
									Attribute
	TO					communication
					01A7H	data area

3)Message

SET Y12

communication

Class

request

0120H

Message

4)

Instance

communication

Attribute

result area

012FH

5)

Message

Instance

communication

Next

complete

Attribute

processing

X02 X05

6)

Attribute

Message
communication
completion	Class
	Instance
		Attribute
		Attribute
		Instance
		Attribute

1)The TO instruction of the sequence program sets to set attributes in the "message communication command" area of the buffer memory.

2)The TO instruction of the sequence program writes the data to be written in the "message communication data" area of the buffer memory.

3)When the message communication request (Y12) is turned ON, the data, which is stored in the "message communication data" area of the buffer memory, is written to the slave node in the area specified by the "message communication command."

4)When the write process is finished, the message communication result is stored in the "message communication result" area of the buffer memory.

5)The message communication is completed when the processing result is stored in the "message communication result" area of the buffer memory, and the message communication completion (X02) is automatically turned ON.

6)If the message communication error signal (X05) is turned ON, the FROM instruction reads the contents of the "message communication result" area, and the cause of the error is verified.

3 - 9

3 - 9

3SPECIFICATIONS

(3)Reading the communication error information

MELSEC-Q

PLC CPU

QJ71DN91

Slave node (MAC ID)

0110H

I/O

Class 1

1)

Message

communication

TO

communication

Instance

011FH command area

Attribute

2)

Message

SET

Y12

communication

Attribute

request

Instance

Slave

2)

information

Attribute

storage area

0120H

Attribute

5)

Message

Attribute

FROM

communication

X02 X05

012FH

result area

0130H

Message

Class

communication

01A7H

data area

Instance

3)

Message

Attribute

communication

Attribute

FROM

complete

X02 X05

4)

Attribute

Message communication

completion	Instance
	Attribute

The status of each slave station is stored during I/O communication.

1)The TO instruction of the sequence program sets to read the communication error information in the "message communication command" area of the buffer memory.

2)When the message communication request (Y12) is turned ON by the sequence program, the error information of the applicable slave node that has been accumulated in the QJ71DN91 is read and processed as follows:

•The error information of the slave node that was set by the "message communication command" area is stored in the "message communication data" area of the buffer memory.

•The processing result of the message communication is stored in the "message communication result" area of the buffer memory.

3)When the processing result is stored in the "message communication result" area of the buffer memory, the message communication completion (X02) is automatically turned ON.

4)The communication error information of the slave node, which is stored in the "message communication data" area of the buffer memory, is loaded onto the PLC CPU by the FROM instruction of the sequence program.

5)If the message communication error signal (X05) is turned ON, the FROM instruction reads the contents of the "message communication result" area, and the cause of the error is verified.

3 - 10

3 - 10

3 SPECIFICATIONS

3.2.3 Slave function (I/O communication function)

MELSEC-Q

The I/O communication function executes the communication of the I/O data with the master node using the polling method.

(1) When GX Configurator-DN is used

The following explains the I/O communication function when the GX Configurator-DN is used.

		PLC CPU						QJ71DN91	Master node
						1)		I/O communication
			SET Y11
							0B00H	request	2)
				3)
								Slave function
			X					receive	Transmission
							0B3FH	data area
				4)			0C00H	Slave function	5)
			Y					transmit	Reception
							0C3FH	data area

[I/O communication]

1)Communication with the master node starts when the I/O communication request (Y11) is turned ON.

[Reception data]

2)Transmission data from the master node is automatically stored in the "slave function receive data" area of the buffer memory in the QJ71DN91.

3)Transmission data from the mater node, which is stored in the "slave function receive data" area of the buffer memory, is loaded onto the PLC CPU by the auto refresh setting.

[Transmission data]

4)With the auto refresh setting, the ON/OFF information to be sent to the master node is written in the "slave function transmit data" area of the buffer memory.

5)The ON/OFF information, which is stored in the "slave function transmit data" area of the buffer memory, is automatically sent to the master node.

3 - 11

3 - 11

3SPECIFICATIONS

(2)When the sequence program is used

MELSEC-Q

The following explains the I/O communication function when the sequence program is used.

PLC CPU

QJ71DN91

Master node

1)I/O communication

SET Y11

request

2)

FROM

3)

0B00H

Slave function

receive

X01

Transmission

0B3FH

data area

I/O communicating

TO

4)

0C00H

Slave function

5)

transmit

Reception

X01

0C3FH

data area

I/O communicating

[I/O communication]

1)Communication with the master node starts when the I/O communication request (Y11) is turned ON.

[Reception data]

2)Transmission data from the master node is automatically stored in the "slave function receive data" area of the buffer memory in the QJ71DN91.

3)The transmission data from the master node, which is stored in the "slave function receive data" area of the buffer memory, is loaded onto the PLC CPU by the FROM instruction of the sequence program.

[Transmission data]

4)The TO instruction of the sequence program writes the ON/OFF information to be sent to the master node in the "slave function transmit data" area of the buffer memory.

5)The ON/OFF information, which is stored in the "slave function transmit data" area of the buffer memory, is automatically sent to the master node.

3 - 12

3 - 12