Mitsubishi Electronics QJ71DN91 User Manual

C

MIT

SUBIS

C

HI ELECTRI

MELSEC System Q

Programmable Logic Controllers

User's Manual

DeviceNet Master-Slave Module

Art. no.: 139835
01 05 2003
SSH (NA)-080143
Version F

QJ71DN91

GX Configurator-DN

MITSUBISHI ELECTRI

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

!

Note that the !CAUTION level may lead to a serious consequence according to t he 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 forw ard it to the end user.

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.

[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 slav e

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.

A - 1 A - 1

[INSTALLATION PRECAUTIONS]

!

CAUTION

Use the PLC in an environment that meets the general specifications contained in the CP U

•

User's Manual to use.
Using this PLC in an environment outside the range of the general specific ations 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 mountin g 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 result ing
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 t hey are still connect ed to the module cou ld break the
module or cables, or cause an operation error resulting from a contact error.

A - 2 A - 2

[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, malfu nction, injur ies, 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.

•

A - 3 A - 3

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

Dec., 2002 SH (NA)-080143-D

Feb., 2003 SH (NA)-080143-E

May., 2003 SH (NA)-080143-F

Correction

About the Generic Terms and Abbreviations, Section 2.2, Section 6.2.1,

6.2.2
Addition

Section 2.5

Correction

Section 2.2, Section 3.3.2, 3.4.1, Section 6.1, 6.2.1, 6.3.2, 6.4, 6.5,
Section 9.2.1, 9.2.2

Correction

SAFETY PRECAUTIONS, INTRODUCTION, CONTENTS, Section 6.2.2,
Section 6.3.3, Section 6.4, Section 6.5

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



A - 4 A - 4

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 SPECIFICATION S 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

A - 5 A - 5

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

A - 6 A - 6

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

A - 7 A - 7

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 instructi on.

BY making this product conform to the EMC directive and low voltage instruc ti on, it is not neces s ary 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·S la ve Mo dul e.

Generic Term/Abbreviation Description

Generic product name of the product types SWnD5C-GPPW-E, SWnD5C-GPPW-EA,

GX Developer

QCPU (Q mode)

GX Configurator-DN
QJ71DN91 Abbreviation for QJ71DN91 DeviceNet Master-Slave Module

Personal computer IBM PC/AT® or compatible computer with DOS/V.

SWnD5C-GPPW-EV and SWnD5C-GPPW-EVA.
"n" in the model is 4 or greater.
Generic term for Q00JCPU, Q00CPU, Q01CPU, Q02CPU, Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU, Q12PHCPU, Q25PHCPU
Abbreviation for DeviceNet Master-Slave Module setting/Monitor Tool GX
Configurator-DN (SW1D5C-QDNU-E)

A - 8 A - 8

Product Configuration

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

Model name Product name Quantity

QJ71DN91 DeviceNet master-slave module

QJ71DN91

Terminal resistor 121Ω, 1/4W
Connector

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

1
2
1

A - 9 A - 9

1 OVERVIEW

1 OVERVIEW

MELSEC-Q

1

1.1 Features

Master station

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 Device Ne t Sp e ci ficat io n Ma nu al (Rel ea se 2. 0), Volu mes 1 a nd 2, fo r th e
specifications of DeviceNet.
DeviceNet is a registered trademark of Open DeviceNet Vendor Association, Inc.

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

MS

Slave side

I/O communication between the master station and slave sta t i on i s possible.
Communication is not possible.

: DeviceNet slave

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.

DeviceNet.

QJ71DN91

master

(Node No. 5)

M

S

QJ71DN91

master + slave

(Node No. 6)

Master made by
other manufacturer

(Node No. 10)

M

S

(Node No. 2)

S

M

S

(Node No. 4)

S

QJ71DN91 slave
(Node No. 1)

24V power

supply

QJ71DN91 slave
(Node No. 3)

S

M

(Node No. 7)

S

(Node No. 8)

S

QJ71DN91
slave
(Node No. 9)

(3) The paramete rs of QJ71D N91 can be se t by any of th e foll ow in g th re e meth od s:

• Setting the parameters using GX Configurator-DN

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

• Setting the parameters using auto configuration

1 - 1 1 - 1

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.

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

communicate with a maxi mum of 6 3 slav e node s.

(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 o f communi ca ti on met h od ca n be sel e cted fo r each slave
node.

QJ71DN91

1

DeviceNet network

Polling

Bit strobe Cyclic

Slave node 1 Slave node 2 Slave node 3 Slave node 4

Change-of-state

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.

1 - 2 1 - 2

2 SYSTEM CONFIGURATION

2 SYSTEM CONFIGURATION

This chapter explains the system configuration of DeviceNet.

2.1 Overall Configuration

MELSEC-Q

2

Terminal resistor
(121Ω, 1/4W)

Slave node

Master node

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:

Drop line

Network power-supply

Tap

module (24V DC)

Power supply tap

Slave node Slave node

Trunk line (main line)

Slave node

Terminal resistor
(121Ω, 1/4W)

Drop line (branch line)

1) The QJ71DN91 can be used a s a maste r node , a sl a ve no de or a

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

3) There is no need to connect the master node and slave nodes in the

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

5) It is necessary to connect the network power supply in order to supply

6) Use the terminal resistors included in the package, or they must be

Slave node

master/slave no de .

connected.

order of node number.

(branch lines).
Terminal resistors are required on both sides of the trunk line.

the power supply to the communication circuit in addition to the
operating power supply of each node.

furnished by the user.

2 - 1 2 - 1

2 SYSTEM CONFIGURATION

(1) Network specification

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 va ri e s depe ndin g on th e co mmunication speed.
See Section 3.1, "Performance Specifications" for details.

(b) Supplying power to the network

The following de scri be s th e met h od o f supp ly ing ne two r k powe r to each
node:

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

2) The power is supplied from the network power-supply module to each

Remarks

MELSEC-Q

2

the network p owe r -s up ply mod ul e.

node via the network cable.

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 Ro ad 7 - Sui te 499 - B o ca Ra to n, FL 33 49 8 U.S .A.
TEL. [phone]
FAX. [phone] or [phone]

2 - 2 2 - 2

2 SYSTEM CONFIGURATION

2.2 Applicable Systems

This section describes the system configuration for the QJ71DN91.

(1) Applicable module and the nu mber 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.

MELSEC-Q

CPU module

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

Applicable module

Q12PHCPU
Q25PHCPU

Number of modules that

can be installed

Q00JCPU Maximum 16

Q00CPU
Q01CPU

Q02CPU
Q02HCPU
Q06HCPU
Q12HCPU
Q25HCPU

Maximum 24

Maximum 64

Maximum 64

Can be installed in Q mode only

1

(

Remarks

(

)

(

(2) Base unit in which the conversion modul e can be i nstall ed

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 capa city 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.

1

)

1

)

(b) Intelligent function module parameters

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

2 - 3 2 - 3

2 SYSTEM CONFIGURATION

(4) Software packages supported

Correspondence between systems which use QJ71DN91s and software
packages are as shown below.
The GX Developer is necessary when using a QJ71DN91.

GX Developer

Software Version

GX Configurator-DN

MELSEC-Q

2

Q00J/Q00/
Q01CPU

Q02/Q02H/
Q06H/Q12H/
Q25HCPU

Q12PH/
Q25PHCPU

2 Version 1.14Q or earlier is incompatible with Each Node Communi cation Error Status

Single PLC system Version 7 or later

Version 1.10L or later

Multiple PLC system Version 8 or later

Single PLC system Version 4 or later Version 1.00A or later

Multiple PLC system Version 6 or later Version 1.10B or later

Single PLC system

Version 7.10L or later Version 1.13P or later

Multiple PLC system

(addresses 1C0

H

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 N o. and Softwar e Ver si on

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

(b) To check the version using the GX Developer

See Section 9.3 of this manual.

Serial No. (first 5 digits)
Function version

03052

2 - 4 2 - 4

2 SYSTEM CONFIGURATION

(2) How to check the GX Configuration-DN software ver si on

The GX Configurator-DN software version can be checked in GX Developer's
"Product information" screen.

[Startup procedure]

GX Developer "Help" Product information

MELSEC-Q

Software version

(In the case of GX Developer Version 7)

2.4 About Use of the QJ71DN91 with the Q00J/Q00/Q01C PU

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.

2 - 5 2 - 5

2 SYSTEM CONFIGURATION

2.5 About Additional Function

The added func ti on is de scribed below.

Function Serial No. Function Outline Reference Section

Addition of Each Node Communication

H

Error Status (addresses 01C0
/448 to 451)

to 01C3

First five digits of

H

serial No. are
04102 or later

Indicates whether an I/O
communication error has
occurred or not in each node.

POINT

Refer to Se ctio n 2 .3 fo r the w ay to con fi r m th e se ri al No .

2.6 Compatible DeviceNet Products from Other M anu facturers

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.

MELSEC-Q

Section 3.4.1 (10)

2 - 6 2 - 6

3 SPECIFICATIONS

3 SPECIFICATIONS

3.1 Performance Specifications

This section explains the performance specifications for QJ71DN91, I/O signals for
PLC CPU and spe ci fi c atio n s fo r bu ffe r me mory.
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)
Node numbers which can be set 0 to 63

3

When

master

function

When slave
function

Communication specifications

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

Maximum cable length

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.

Number of
connections
that be
created

Amount of
communica­tion data

Node type Device net slaves (Group 2 server)
Setting possible node number 0 to 63

Number of
connections
that can be
created

Amount of
communica­tion data

Message connection 63
I/O connection 63 (polling, bit strobe, change of state, cyclic)

I/O
communica­tion
Message
communica­tion

I/O connection

I/O
communica­tion

Send Max. 4096 points (512 bytes), max. 256 bytes per 1 node
Receive Max. 4096 points (512 bytes), max. 256 bytes per 1 node
Send Max. 240 bytes
Receive Max. 240 bytes

1 (polling)

Send Max. 1024 points (128 bytes)
Receive Max. 1024 points (128 bytes)

Maximum transmitting distance of

Communic

ations
speed

125 kbaud 500 m 156 m
250 kbaud 250 m 78 m
500 kbaud 100 m

Thick

Cables

trunk line

Cables

100 m See 3.1.1 6 m

Thin

Thick and

thin cables

coexist

MELSEC-Q

Length of drop line

Maximum Total

39 m

3.1.1 Maximum transmitting distance w hen thi ck and thin cabl es coexist

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

Communication speed

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

Maximum transmitting distance of trunk line w hen thick

and thin cables coexist

3 SPECIFICATIONS

3.2 Functions

This section explains the functions of the QJ71DN91.

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.

(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

MELSEC-Q

3

SET Y11

X

Y

1)

3)

4)

I/O communication
request

0700

H

Master function

receive

data area

07FF

H

0900

H

Master function

transmit

data area

09FF

H

2)

Transmission

5)

Reception

[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 ne cessary 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 me mory is loaded onto th e PL C CP U by th e a uto r e fr e sh
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 i s aut o mati cal ly sent to a slav e no de .

3 - 2 3 - 2

3 SPECIFICATIONS

(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 Slave node

SET Y11

FROM

X01
I/O communication
in progress

TO

X01
I/O communicating

[I/O communication]

1) When the I/O communication request (Y11) is set, the I/O

[Reception data]

2) The input status from each slave node is automatically stored in the

3) The input status stored in the "master function receive data" area of the

1)

3)

4)

I/O communication
request

H

0700

Master function

receive

data area

H

07FF

H

0900

Master function

transmit

data area

H

09FF

2)

Transmission

3)

Reception

communication with each slave node starts. It is not ne cessary to set
Y11, however, when the auto communication start is set with a
parameter.

"master function receive data" area of the buffer memory in the
QJ71DN91.

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 auto mati cal ly sent to the slave node.

3 - 3 3 - 3

3 SPECIFICATIONS

(3) Overview of each connection type

MELSEC-Q

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 tr a ns mit s th e ou tp u t da ta .

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

3) The master node tr a ns mit s th e ou tp u t da ta .

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

5) The master node tr a ns mit s th e ou tp u t da ta .

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

Master node

1)

4)

3)

2)

Slave node

6)

5)

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 th e bit st robe co nne c ti on .

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)

3)1)

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)

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)

0110

TO

SET Y12

FROM

X05

X02

FROM

X05

X02

Message communication
completion

1)

2)

6)

5)

H

Message
communication
command area

H

011F

Message
communication
request

H

0120

Message
communication

result area

H

012F

H

0130

Message
communication

data area

H

01A7

4)

Message
communication
complete

MELSEC-Q

Class

2)
Instance

Attribute
Attribute

Instance

Attribute

3)

Class

Instance

Attribute

Instance

Attribute
Attribute

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 compl et io n, th e da ta in the sl av e no de , which i s st ore d 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.

3 - 8 3 - 8

3 SPECIFICATIONS

(2) Setting attributes

MELSEC-Q

PLC CPU QJ71DN91 Slave node (MAC ID)

H

SET Y12

Next

X05

processing

X02
Message

communication
completion

TO

TO

0110

1)

011F
0130

2)

01A7

3)

0120

012F

5)

6)

Message
communication
command area

H
H

Message
communication

data area

H

Message
communication
request

H

Message
communication

result area

H

Message
communication
complete

3)

4)

Class

Instance

Attribute
Attribute

Class

Instance

Attribute

Instance

Class

Attribute
Attribute

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

3 SPECIFICATIONS

(3) Reading the communication err or i nformation

MELSEC-Q

PLC CPU QJ71DN91 Slave node (MAC ID)

I/O

Class 1

Instance

Attribute
Attribute

TO

SET Y12

H

1)

2)

0110

011F

Message
communication
command area

H

Message
communication
request

communication

Slave

information

storage area

H

0120

X02

X05

X05

X02

Message communication
completion

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

FROM

FROM

5)

012F
0130

01A7

3)

4)

Message
communication

result area

H
H

Message
communication

data area

H

Message
communication
complete

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 au tomat i cal ly 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.

2)

Instance

Attribute
Attribute

Attribute

Class

Instance

Attribute
Attribute

Attribute

Instance

Attribute

3 - 10 3 - 10

3 SPECIFICATIONS

3.2.3 Slave function (I/O communication function)

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

MELSEC-Q

SET Y11

X

Y

1)

3)

4)

I/O communication
request

H

0B00

Slave function

H

0B3F

H

0C00

Slave function

H

0C3F

receive

data area

transmit

data area

2)

Transmission

5)
Reception

[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 func ti on re ce ive da ta" ar ea o f th e bu ffe r me mory 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
buff er 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

3 SPECIFICATIONS

(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

SET Y11

FROM
X01
I/O communicating

TO
X01
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 func ti on re ce ive da ta" ar ea o f th e bu ffe r me mory in the
QJ71DN91.

3) The transmission data from the master node, which is stored in the
"slave functi on r e ceive da ta" area o f th e bu ffe r memory, is loaded onto
the PLC CPU by the FROM instruction of the sequence program.

1)

3)

4)

I/O communication
request

H

0B00

Slave function

data area

H

0B3F

H

0C00

Slave function

data area

H

0C3F

receive

transmit

2)

Transmission

5)
Reception

[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