Mitsubishi Electronics Q68ADV, Q64AD, Q68ADI User Manual

4 (1)

Analog-Digital Converter

Module

User's Manual

Mitsubishi Programmable

Logic Controller

Q64AD

Q68ADV

Q68ADI

GX Configurator-AD (SW0D5C-QADU-E)

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 PLC system, please read the user's manual for 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 store this manual in a safe place and make it accessible when required. Always forward it to the end user.

[DESIGN PRECAUTION]

!DANGER

Do not write data into the "system area" of the buffer memory of intelligent function modules. Also, do not use any "prohibited to use" signals as an output signal to an intelligent function module from the PLC CPU.

Writing data into the "system area" or outputting a signal for "prohibited to use" may cause a PLC system malfunction.

!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 100mm(3.9inch) 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 user's manual of the CPU module 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 unit while pressing the installation lever located at the bottom of the module downward. Improper installation may result in malfunction, breakdown or the module coming loose and dropping.

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 the module to 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 damage to the module.

The system that uses the QnPHCPU allows you to change a module online. Note that there are restrictions on the modules that can be changed online and each module has a predetermined changing procedure. For details, refer to the chapter of online module change in this manual.

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

Doing so may cause malfunction or failure in the module.

[WIRING PRECAUTIONS]

! CAUTION

Always ground the FG terminal for the PLC. There is a risk of electric shock or malfunction.

When turning on the power and operating the module after wiring is completed, always attach the terminal cover that comes with the product.

There is a risk of electric shock if the terminal cover is not attached.

Tighten the terminal screws within the range of specified torque.

If the terminal screws are loose, it may result in short circuits or malfunction.

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

Be careful not to let foreign matter such as sawdust or wire chips get inside the module. They 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 ventilation.

A - 2

A - 2

[STARTING AND MAINTENANCE PRECAUTIONS]

!CAUTION

Do not disassemble or modify the modules.

Doing so could cause failure, malfunction injury or fire.

Switch all phases of the external power supply off when mounting or removing the module. Not doing so may cause failure or malfunction of the module.

The system that uses the QnPHCPU allows you to change a module online. Note that there are restrictions on the modules that can be changed online and each module has a predetermined changing procedure. For details, refer to the chapter of online module change in this manual.

Do not touch the connector while the power is on.

Doing so may cause malfunction.

Switch all phases of the external power supply off when cleaning or retightening the terminal screws and module installation screws.

Not doing so may cause failure or malfunction of the module.

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

If the screws are tightened too much, it may cause damages to the screws and/or the module, resulting in the module falling out, short circuits or malfunction.

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 PRECAUTIONS]

!CAUTION

When disposing of this product, treat it 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., 1999

SH (NA)-080055-A

First printing

 

Oct., 2000

SH (NA)-080055-B

Add the contents of the function version B.

 

 

 

 

 

 

 

 

 

 

 

 

 

Correction

 

 

 

 

 

 

 

About the Generic Terms and Abbreviations, Section 2.1, Section 3.1.3,

 

 

 

3.4.1, Section 4.3, 4.4.2, Section 5.2.1, 5.2.2, 5.3.3, 5.6.1

 

 

 

 

 

 

 

 

 

 

 

 

Partial addition

 

 

 

 

 

 

 

 

 

 

 

 

 

Section 1.1, Section 3.1.1, 3.1.2, 3.2, 3.3.1, 3.3.2, Section 4.5, Section

 

 

7.2.3, 7.2.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Addition

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Section 1.2, Section 2.2, Appendix 1, 1.1, 1.2, 1.3

 

 

 

 

Jun., 2001

SH (NA)-080055-C

Standardize the name from software package (GPP function) to Product

 

 

name (GX Developer).

 

 

 

Standardize the name from utility package (QADU) to Product name (GX

 

 

Configurator-AD).

 

 

 

 

 

 

 

 

 

 

 

Correction

 

 

 

 

 

Conformation to the EMC Directive and Low Voltage Instruction, About

 

 

the Generic Terms and Abbreviations, Product Structure, Section 2.1,

 

 

2.2, Section 4.6, Section 5.2, 5.2.1, 5.2.2, 5.3.3, Appendix 1.2

 

 

 

Feb., 2002

SH (NA)-080055-D

Add the contents of the function version C.

 

 

 

 

 

 

 

 

 

Correction

 

 

 

 

 

 

 

 

 

 

 

 

Section 2.2, Section 3.4.1, Section 4.2, 4.4.1, 4.4.2, Section 5.3.3

 

 

 

 

 

 

 

 

 

Partial addition

 

 

 

 

 

SAFETY PRECAUTIONS, , About the Generic Terms and Abbreviations,

 

 

 

Product Structure, Section 1.2, Section 2.1, Section 3.1.1, 3. 2, Section

 

 

 

4.3, 4.6, Section 5.2.1, 5.2.2, Section 8.1, 8.2.1, Appendix 1.1, 1.2, 1.3,

 

 

 

 

 

 

 

 

 

Addition

 

 

 

 

 

 

 

 

 

 

 

 

Section 3.4.2, 3.4.3, 3.4.13, 3.4.14, 3.4.15, Chapter 7, Appendix 2, 2.1,

 

 

2.2, 2.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Renumbering

 

 

 

 

 

Section 3.4.2 to Section 3.4.10

Section 3.4.4 to Section 3.4.12,

 

 

 

Chapter 7 Chapter 8, Appendix 2 Appendix 3

May, 2002

SH (NA)-080055-E

 

 

 

 

 

 

 

 

 

Correction

 

 

 

 

 

 

 

 

 

 

 

Section 3.4.1, 3.4.2, 3.4.3, 3.4.14, 3.4.15,.Section 4.2, 4.5, 4.6,

 

 

Section 7.2, 7.3.1, 7.3.2,7.3.4, 7.3.6, 7.4, 7.5, Appendix 1.1, 2.2, 2.3

 

 

 

 

 

 

 

 

Partial addition

 

 

 

 

 

 

 

 

 

 

 

Section 3.3.2, Section 8.2.3

 

 

 

 

 

 

 

 

 

 

 

A - 4

A - 4

Print Date

Manual Number

 

 

Revision

Feb., 2003

SH (NA)-080055-F

 

 

 

 

Correction

 

 

 

 

 

SAFETY PRECAUTIONS, Section 1.2, Section 2.1, Section 3.4.1 to 3.4.3, 3.4.15, Section 4.5, Section 5.1, 5.2.1, 5.2.2, 5.3.2, 5.6.1 to 5.6.3, Section 7.3.1, 7.3.3 to 7.3.6, Appendix 1.1, Appendix 1.2, Appendix 2.2, Appendix 2.3

Addition

Section 5.6.4, 5.6.5

May, 2003 SH (NA)-080055-G

Correction

Section 2.2, Section 3.4.1, 3.4.2, 3.4.3, 3.4.14, 3.4.15, Section 4.5, 4.6,

Section 5.3.1

Japanese Manual Version SH-080028-I

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.

1999 MITSUBISHI ELECTRIC CORPORATION

A - 5

A - 5

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.

Please forward a copy of this manual to the end user.

 

 

CONTENTS

 

 

SAFETY PRECAUTIONS..............................................................................................................................

A- 1

REVISIONS....................................................................................................................................................

A- 4

Conformation to the EMC Directive and Low Voltage Instruction ................................................................

A-

9

About the Generic Terms and Abbreviations ................................................................................................

A- 9

Product Structure ...........................................................................................................................................

A-10

 

 

1 OVERVIEW

1- 1 to 1- 2

1.1

Features ..................................................................................................................................................

1-

1

1.2

Functions Added to Function Version B and Later ................................................................................

1- 2

 

 

2 SYSTEM CONFIGURATION

2- 1 to 2- 4

 

 

 

 

2.1

Applicable Systems.................................................................................................................................

2-

1

2.2

How to Check the Function Version and Software Version...................................................................

2- 3

 

 

3 SPECIFICATIONS

3- 1 to 3-26

3.1

Performance Specifications....................................................................................................................

3-

1

3.1.1

Performance specifications list ........................................................................................................

3-

1

3.1.2

I/O conversion characteristic............................................................................................................

3-

2

3.1.3

Accuracy...........................................................................................................................................

3-

9

3.2

Function List ............................................................................................................................................

3-10

3.2.1 A/D conversion methods..................................................................................................................

3-10

3.2.2 Maximum and minimum values hold function .................................................................................

3-12

3.3

I/O Signals for the PLC CPU ..................................................................................................................

3-12

3.3.1

List of I/O signals..............................................................................................................................

3-12

3.3.2

Details of I/O signals ........................................................................................................................

3-13

3.4

Buffer Memory.........................................................................................................................................

3-17

3.4.1 Buffer memory assignment (Q64AD) ..............................................................................................

3-17

3.4.2 Buffer memory assignment (Q68ADV)............................................................................................

3-18

3.4.3 Buffer memory assignment (Q68ADI) .............................................................................................

3-19

3.4.4

A/D conversion enable/disable setting (buffer memory address 0: Un\G0)...................................

3-20

3.4.5 CH average time/average number of times

 

 

 

 

(buffer memory addresses 1 to 8: Un\G1 to Un\G8).......................................................................

3-20

3.4.6

Averaging processing setting (buffer memory address 9: Un\G9) .................................................

3-21

3.4.7

A/D conversion completed flag (buffer memory address 10: Un\G10) ..........................................

3-22

3.4.8 Digital output values (buffer memory addresses 11 to 18: Un\G11 to Un\G18) ............................

3-22

3.4.9 Write data error codes (buffer memory address 19: Un\G19)........................................................

3-23

3.4.10 Setting ranges (buffer memory addresses 20, 21: Un\G20, Un\G21)..........................................

3-23

3.4.11 Offset/gain setting mode (buffer memory addresses 22, 23: Un\G22, Un\G23) .........................

3-24

A - 6

A - 6

3.4.12 Maximum and minimum values storage area

 

 

(buffer memory addresses 30 to 45: Un\G30 to Un\G45) ............................................................

3-24

3.4.13 Mode switching setting (buffer memory addresses 158, 159: Un\G158, Un\G159)....................

3-25

3.4.14

Pass data classification setting (buffer memory addresses 200: Un\G200) (Q64AD only).........

3-25

3.4.15

Industrial shipment settings and user range settings offset/gain values

 

 

(buffer memory addresses 202 to 233: Un\G202 to Un\G233) ....................................................

3-26

4 SETUP AND PROCEDURES BEFORE OPERATION

4- 1 to 4-13

 

 

 

 

4.1

Handling Precautions..............................................................................................................................

4-

1

4.2

Setup and Procedures before Operation ...............................................................................................

4- 2

4.3

Part Identification Nomenclature ............................................................................................................

4-

3

4.4

Wiring.......................................................................................................................................................

4-

5

4.4.1

Wiring precautions............................................................................................................................

4-

5

4.4.2

External wiring..................................................................................................................................

4-

6

4.5

Switch Setting for Intelligent Function Module .......................................................................................

4-

8

4.6

Offset/Gain Settings................................................................................................................................

4-10

 

 

5 UTILITY PACKAGE (GX Configurator-AD)

5- 1 to 5-22

5.1

Utility Package Functions........................................................................................................................

5-

1

5.2

Installing and Uninstalling the Utility Package........................................................................................

5-

2

5.2.1

User precautions ..............................................................................................................................

5-

2

5.2.2

Operating environment.....................................................................................................................

5-

4

5.3

Explanation of Utility Package Operation...............................................................................................

5-

5

5.3.1 How to perform common utility package operations.......................................................................

5-

5

5.3.2

Operation overview ..........................................................................................................................

5-

8

5.3.3

Starting the intelligent function module utility ..................................................................................

5-10

5.4

Initial Setting............................................................................................................................................

5-12

5.5

Automatic Refresh Settings ....................................................................................................................

5-13

5.6

Monitor/Test ............................................................................................................................................

5-15

5.6.1

Monitor/test screen...........................................................................................................................

5-15

5.6.2

Offset/gain setting operation (Function version C or later) .............................................................

5-18

5.6.3

Offset/gain setting operation (Function version B or earlier) ..........................................................

5-19

5.6.4 Pass data (Q64AD) ..........................................................................................................................

5-20

5.6.5 Pass data (Q68ADV/Q68ADI) .........................................................................................................

5-21

 

 

6 PROGRAMMING

6- 1 to 6- 5

 

 

 

6.1

Programming Example Using the Utility Package .................................................................................

6- 2

6.1.1

Operating the utility package ...........................................................................................................

6-

2

6.1.2 Programming example.....................................................................................................................

6- 3

6.2

Programming Example without Using the Utility Package ....................................................................

6- 4

 

 

7 ONLINE MODULE CHANGE

7- 1 to 7-31

7.1

Online Module Change Conditions........................................................................................................

7 - 1

7.2

Online Module Change Operations.......................................................................................................

7 - 2

7.3

Online Module Change Procedure........................................................................................................

7 - 3

A - 7

 

A - 7

 

7.3.1 When industrial shipment setting is used and initial setting was made with GX Configurator-AD

........................................................................................................................................................ 7 - 3

7.3.2When industrial shipment setting is used and initial setting was made with sequence program. 7 - 8

7.3.3When user range setting is used and initial setting was made with GX Configurator-AD

 

(other system is available)..............................................................................................................

 

7 -12

7.3.4 When user range setting is used and initial setting was made with GX Configurator-AD

 

 

 

(other system is unavailable)..........................................................................................................

 

7 -16

7.3.5 When user range setting is used and initial setting was made with sequence program

 

 

 

(other system is available)..............................................................................................................

 

7 -22

7.3.6 When user range setting is used and initial setting was made with sequence program

 

 

 

(other system is unavailable)..........................................................................................................

 

7 -26

7.4 Range Reference Table.........................................................................................................................

 

7 -30

7.5 Precautions for Online Module Change ................................................................................................

 

7 -31

 

 

 

8 TROUBLESHOOTING

 

8- 1 to 8- 5

8.1

Error Code List ........................................................................................................................................

 

8-

1

8.2

Troubleshooting ......................................................................................................................................

 

8-

2

8.2.1 When the "RUN" LED is flashing or turned off................................................................................

 

8-

2

8.2.2 When the "ERROR" LED is on or flashing ......................................................................................

 

8- 2

8.2.3 When the digital output values cannot be read...............................................................................

 

8-

3

8.2.4 Checking the A/D converter module status using GX Developer system monitor ........................

8- 4

 

 

APPENDIX

App.- 1 to App.-16

Appendix 1 Function Upgrade for the A/D Converter Module................................................................

 

App.- 1

Appendix 1.1 A comparison of functions of the A/D converter module ..............................................

 

App.- 1

Appendix 1.2 Combinations of A/D converter module functions and GX Configurator-AD

 

 

 

software versions............................................................................................................

 

App.-

2

Appendix 1.3 Precautions for replacing the module of function version A with the one of

 

 

 

function version B or later...............................................................................................

 

App.-

2

Appendix 2 Dedicated Instruction List ......................................................................................................

 

App.-

3

Appendix 2.1 OFFGAN .........................................................................................................................

 

App.- 4

Appendix 2.2 OGLOAD.........................................................................................................................

 

App.- 6

Appendix 2.3 OGSTOR.........................................................................................................................

 

App.-10

Appendix 3 External Dimension Diagram ...............................................................................................

 

App.-15

 

 

INDEX

Index- 1 to Index- 2

A - 8

A - 8

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 general terms and abbreviations.

Abbreviation/general terms

Description of the abbreviation/general terms

A/D converter module

Generic term for Q64AD, Q68ADI, Q68ADV

 

 

Personal computer

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

 

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 name is 4 or greater.

GX Configurator-AD

Generic term for analog-digital converter module setting and monitor tool GX

Configurator-AD (SW0D5C-QADU-E)

 

QCPU (Q mode)

Generic term for Q00JCPU, Q00CPU, Q01CPU, Q02CPU, Q02HCPU, Q06HCPU,

Q12HCPU, Q25HCPU

 

QnPHCPU

Generic term for Q12PHCPU and Q25PHCPU.

 

 

Personal computer

Generic term for DOS/V personal computer

 

 

Factory setting

Generic term for analog input ranges 0 to 10V, 0 to 5V, 1 to 5V, -10 to 10V, 0 to 20mA

and 4 to 20mA

 

A - 9

A - 9

Product Structure

The product structure of this product is given in the table below.

Model code

Product name

 

Quantity

 

 

 

 

Q64AD

Q64AD Model Analog-Digital Converter Module

 

1

 

 

 

 

Q68ADV

Q68ADV Model Analog -Digital Converter Module

 

1

 

 

 

 

Q68ADI

Q68ADI Model Analog -Digital Converter Module

 

1

SW0D5C-QADU-E

GX Configurator-AD Version 1

(1-license product)

(CD-ROM)

1

 

 

 

 

 

SW0D5C-QADU-EA

GX Configurator-AD Version 1

(Multiple-license product)

(CD-ROM)

1

 

 

 

 

 

A - 10

A - 10

1 OVERVIEW

 

MELSEC-Q

 

 

 

 

 

 

 

1 OVERVIEW

 

 

 

This User's Manual describes the specifications, handling and programming methods

1

 

 

 

 

for the Q64AD analog-digital converter module (hereinafter referred to as the Q64AD),

 

 

 

 

Q68ADV analog-digital converter module (hereinafter referred to as the Q68ADV), and

 

 

Q68ADI analog-digital converter module (hereinafter referred to as the Q68ADI), which

 

 

are used in conjunction with MELSEC-Q Series CPUs.

 

 

In this manual, the Q64AD, Q68ADV, and Q68ADI are collectively referred to as the

 

 

A/D converter modules.

 

1.1 Features

 

 

 

(1) Select the type of module according to the application.

• Q64AD

...........

4 channels, where the voltage input or current input can be

 

 

 

selected for each channel.

Q68ADV ........ 8 channels, all of which are voltage input.

Q68ADI .......... 8 channels, all of which are current input.

(2)High speed conversion

Conversion is performed at a high speed of 80 s/channel. Also, the temperature drift compensation function can be performed using a processing time of "conversion time for all channels + 160 s".

(3) High degree of accuracy

The degree of accuracy for the conversion process is ± 0.1% (When the ambient temperature is 25 ± 5 °C).

(4) Changing the resolution mode

The resolution mode can be changed according to the application, and digitalvalue resolution settings of 1/4000, 1/12000 or 1/16000 can be selected.

(5) Changing the input range

The input range 1 can easily be set from the GX Developer.

1: Input range refers to the type of offset/gain settings. The most frequently used range is set as the default but the user can also set the offset/gain.

(6) Easy settings using the utility package

A utility package is sold separately (GX Configurator-AD).

The utility package is not a required item. However, it can be used to set initial settings and automatic refresh settings on screen, reduce sequence programs, and check settings and operating status.

1 - 1

1 - 1

1

OVERVIEW

 

 

MELSEC-Q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.2 Functions Added to Function Version B and Later

 

1

 

 

(1) Functions added to function version B

 

 

 

 

 

The functions added by the function version B A/D converter module are listed

 

 

 

 

 

 

 

 

below.

 

 

 

 

 

 

 

 

 

 

 

Item

Function overview

 

Reference section

 

 

Multiple PLC system

Compatible with a multiple PLC system. A PLC CPU of function version

 

Section 2.1

 

 

compatibility

B or later are required.

 

 

 

 

 

 

 

 

 

The resolution mode can be changed according to the application, and

 

 

 

 

Resolution mode

digital-value resolution settings of 1/4000, 1/12000 or 1/16000 can be

 

Section 3.2

 

 

 

 

selected.

 

 

 

 

High resolution mode

This turns ON when in high resolution mode.

 

Section 3.3

 

 

status flag (X8)

 

 

 

 

 

 

 

 

Maximum value/minimum

This turns ON when the maximum and minimum values stored in buffer

 

 

 

 

value reset completed flag

memory addresses 30 to 45 are reset by the maximum value/minimum

 

Section 3.3

 

 

(XD)

value reset request (YD).

 

 

 

 

 

(2) Functions added to function version C

 

 

 

 

 

The functions added to the A/D converter module of function version C are listed

 

 

 

 

below.

 

 

 

 

 

 

 

 

 

 

Item

Function overview

 

Reference section

 

 

Online module change

You can change the module without stopping the system. A PLC CPU

 

Chapter 7

 

 

of function version C or later is required.

 

 

 

 

 

 

 

 

 

 

 

Using the mode switching setting (buffer memory addresses 158, 159:

 

 

 

 

 

 

Un\G158, Un\G159) and operation condition setting request (Y9), the

 

Section 3.4.13

 

 

 

 

module is switched between the normal mode and offset/gain setting

 

 

 

 

 

 

 

 

 

Mode switching that does

mode without the PLC CPU being reset.

 

 

 

 

not require PLC CPU to be

Using the dedicated instruction (G.OFFGAN), the module is switched

 

 

 

 

reset

between the normal mode and offset/gain setting mode without the

 

Appendix 2.1

 

 

 

 

PLC CPU being reset.

 

 

 

 

 

 

Using GX Configurator-AD, the module is switched between the normal

 

Section 5.6.2

 

 

 

 

mode and offset/gain setting mode without the PLC CPU being reset.

 

 

 

 

 

 

 

POINT

(1)See Appendix 1.1 for a comparison of functions of the function version.

(2)See Section 2.2 on how to check the function version.

1 - 2

1 - 2

2 SYSTEM CONFIGURATION

MELSEC-Q

2 SYSTEM CONFIGURATION

2.1 Applicable Systems

This section describes the system configuration for the A/D converter module.

(1) Applicable module and the number of modules that can be installed 2

The following are the CPU module and network module (for remote I/O stations) in which the A/D converter module 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

 

 

 

 

 

Q00CPU

Maximum 24

 

 

(

1)

 

 

 

 

 

 

Q01CPU

 

 

 

 

 

 

 

 

 

 

 

Q02CPU

 

 

 

 

 

CPU module

Q02HCPU

 

Can be installed in Q mode only

Q06HCPU

Maximum 64

 

(

1)

 

 

 

Q12HCPU

 

 

 

 

 

 

Q25HCPU

 

 

 

 

 

 

Q12PHCPU

Maximum 64

 

 

(

1)

 

Q25PHCPU

 

 

 

 

 

 

QJ72LP25-25

 

 

 

 

 

Network module

QJ72BR15

Maximum 64

MELSECNET/H Remote I/O

QJ72LP25G

station (

2)

 

 

QJ71LP25GE

 

 

 

 

 

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

2 See Q Corresponding MELSECNET/H Network System Reference Manual (Remote I/O

network).

 

 

 

 

 

 

(2) Base Unit in which the converter module can be installed

The A/D converter module can be installed in any I/O slot (3) 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.

3 Limited to the range of the number of I/O points in the CPU module and network module (for remote I/O stations).

(3) Compatibility with a multiple PLC system

First read the QCPU (Q mode) user's manual (Function Explanation, Program Fundamentals) if the A/D converter module is used with a multiple PLC system.

(a)Compatible A/D converter module

Use an A/D converter module 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 A/D converter module only.

2 - 1

2 - 1

2SYSTEM CONFIGURATION

(4)Compatibility with online module change

MELSEC-Q

To make an online module change, use the module of function version C or later.

POINT

The products of function version C include the functions of the products of function

versions A and B.

2

(5) Software packages supported

Correspondence between systems which use A/D converter modules and software packages are as shown below.

The GX Developer is necessary when using a A/D converter module.

 

 

Software Version

 

 

 

 

 

 

GX Developer

GX Configurator-AD 4

 

Single PLC system

Version 7 or later

Version 1.10L or later

 

(cannot be used with the

Q00J/Q00/Q01CPU

 

 

Multiple PLC system

Version 8 or later

SW0D5C-QADU-E 50F

 

 

or earlier versions).

 

 

 

 

Single PLC system

Version 4 or later

SW0D5C-QADU-E 00A

Q02/Q02H/Q06H/

or later

 

 

Q12H/Q25HCPU

Multiple PLC system

Version 6 or later

SW0D5C-QADU-E 20C

 

or later

 

 

 

 

Single PLC system

 

Version 1.13P or later

 

 

(cannot be used with the

Q12PH/Q25PHCPU

 

Version 7.10L or later

Multiple PLC system

SW0D5C-QADU-E 50F

 

 

 

 

or earlier versions).

 

 

 

If installed in a MELSECNET/H remote I/O

Version 6 or later

SW0D5C-QADU-E 50F

station

 

or later

 

 

 

 

 

 

4 Refer to Appendix 1.2 for the combinations of the A/D converter module functions and GX

Configurator-AD software versions.

2 - 2

2 - 2

2 SYSTEM CONFIGURATION

2.2 How to Check the Function Version and Software Version

MELSEC-Q

This section describes how to check the function version of the A/D converter module and the GX Configurator-AD software version.

(1)How to check the function version of the A/D converter module

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

Function version

80M1

IND. CONT. EQ.

(b)To check the version using the GX Developer See Section 8.2.4 of this manual.

(2)How to check the GX Configurator-AD software version

The GX Configurator-AD 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 - 3

2 - 3

2 SYSTEM CONFIGURATION

MELSEC-Q

REMARK

The version indication for the GX Configurator-AD has been changed as shown below from the SW0D5C-QADU-E 50F upgrade product.

Previous product

Upgrade and subsequent versions

SW0D5C-QADU-E 50F

GX Configurator-AD Version 1.10L

2 - 4

2 - 4

3 SPECIFICATIONS

MELSEC-Q

3 SPECIFICATIONS

3.1 Performance Specifications

3.1.1 Performance specifications list

Table 3.1 shows the performance specifications of the A/D converter modules.

Table 3.1 Performance specifications

 

 

Model name

 

 

 

Q64AD

 

 

 

 

Q68ADV

 

 

Q68ADI

 

 

 

 

3

Item

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Analog input points

 

 

 

4 points (4 channels)

 

 

 

8 points (8 channels)

 

8 points (8 channels)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Analog

Voltage

 

 

 

–10 to 10 V DC (Input resistance value 1M )

 

 

———

 

 

 

 

 

 

 

 

 

 

0 to 20 mA DC

 

 

 

 

 

 

 

 

 

0 to 20 mA DC

 

 

 

 

 

input

Current

 

 

 

 

 

 

 

———

 

 

 

 

 

 

 

 

(input resistance value 250

 

)

 

 

 

 

(input resistance value 250 )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Digital output

 

 

 

 

16-bit signed binary (normal resolution mode: –4096 to 4095,

 

 

 

 

 

 

 

 

 

 

high resolution mode: –12288 to 12287, –16384 to 16383

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal resolution mode

 

High resolution mode

 

 

 

 

 

 

 

 

 

 

 

Analog input range

 

Digital output

 

Maximum

Digital output

 

 

Maximum

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

value

 

resolution

 

value

 

 

resolution

 

 

 

 

 

 

 

 

 

 

 

0 to 10 V

 

 

 

 

 

 

 

2.5 mV

 

0 to 16000

 

 

0.625 mV

 

 

 

 

 

 

 

 

 

 

 

0 to 5 V

 

 

0 to 4000

 

 

1.25 mV

 

0 to 12000

 

 

0.416 mV

 

 

 

 

 

 

 

 

 

 

 

1 to 5 V

 

 

 

 

 

 

 

1.0 mV

 

 

 

0.333 mV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O characteristics,

 

 

 

Voltage

–10 to 10 V

 

 

 

 

 

 

 

2.5 mV

 

–16000 to

 

 

0.625 mV

 

 

 

 

Maximum resolution

 

 

 

 

 

 

 

 

 

 

 

 

16000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–4000 to 4000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Users range

 

 

0.375 m V

 

–12000 to

 

 

0.333 mV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setting

 

 

 

 

 

 

 

12000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 to 20 mA

 

 

0 to 4000

 

5

A

 

0 to 12000

 

 

1.66

A

 

 

 

 

 

 

 

 

 

 

Current

4 to 20 mA

 

 

 

4

A

 

 

 

1.33

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Users range

 

–4000 to 4000

 

1.37

A

 

–12000 to

 

 

1.33

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setting

 

 

 

12000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal resolution mode

 

 

 

 

High resolution mode

 

 

 

 

 

 

 

 

 

 

 

Ambient temperature 0 to 55 °C

Ambient

 

Ambient temperature 0 to 55 °C

Ambient

 

 

 

 

 

 

Analog input range

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

With

 

Without

 

 

 

 

With

 

Without

 

 

 

 

 

 

 

 

 

 

 

 

temperature

 

 

 

 

 

temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

temperature

 

temperature

 

 

temperature

temperature

 

 

 

 

 

 

 

 

 

 

25 ± 5 °C

 

25 ± 5 °C

 

 

 

 

Accuracy

 

 

 

 

 

drift correction

 

drift correction

 

drift correction

drift correction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Accuracy

 

 

0 to 10 V

 

 

 

 

 

 

 

 

 

 

 

 

 

± 0.3 %

 

± 0.4 %

 

 

± 0.1 %

 

 

 

 

in respect

 

 

–10 to 10 V

 

 

 

 

 

 

 

 

 

 

 

 

(± 48 digit

)

(± 64 digit

)

(± 16 digit

)

 

 

 

to

 

Voltage

0 to 5 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

maximum

 

1 to 5 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

digital

 

 

 

 

± 0.3 %

 

± 0.4 %

 

 

± 0.1 %

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Users range

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

output

 

 

setting

 

(± 12 digit )

 

(± 16 digit

 

)

(± 48 digit )

 

± 0.3 %

 

± 0.4 %

 

 

± 0.1 %

 

 

 

 

value)

 

 

0 to 20 mA

 

 

 

 

 

 

 

 

 

 

 

 

(± 36 digit

)

(± 48 digit

)

(± 12 digit

)

 

 

 

 

 

Current

4 to 20 mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Users range

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Digit indicates a digital value.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 - 1

3 - 1

3 SPECIFICATIONS

MELSEC-Q

 

 

Model name

Q64AD

 

 

Q68ADV

 

Q68ADI

 

 

Item

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80

s/channel

 

 

 

Conversion speed

(When there is temperature drift, the time calculated by adding 160

s will be used

 

 

 

 

regardless of the number of channels used)

 

 

 

Absolute maximum input

 

Voltage : ± 15 V

Current : ± 30 mA

 

 

 

E2PROM write count

 

 

 

Max. 100 thousand times

 

 

 

Insulation method

Between the I/O terminal and PLC power supply : Photocoupler insulation

 

 

 

 

 

Between channels : Non-insulated

 

 

 

 

 

 

 

 

Dielectric withstand voltage

Between the I/O terminal and PLC power supply: 500VAC for 1 minute

 

3

 

Insulation resistance

Between the I/O terminal and PLC power supply: 500VDC 20M or more

 

Number of occupied points

 

 

 

16 points

 

 

 

 

 

 

 

 

 

Connection terminals

 

 

 

18-point terminal block

 

 

 

 

 

 

Applicable wire size

 

 

 

0.3 to 0.75 mm2

 

 

 

Applicable solderless terminal

R1.25-3 (A solderless terminal with sleeve cannot be used)

 

 

Internal current consumption

0.63 A

 

 

0.64 A

 

 

0.64 A

 

 

(5 V DC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weight

0.18 kg

 

 

0.19 kg

 

 

0.19 kg

REMARK

See the user’s manual for the CPU module being used for general specifications of the A/D converter modules.

3.1.2 I/O conversion characteristic

The I/O conversion characteristic represents the angle formed by a straight line connecting the "offset value" and "gain value" when the analog signals (voltage or current input) from outside the PLC are converted to digital values.

Offset value

The offset value denotes the analog input value (voltage or current) that makes the digital output value 0.

Gain value

The gain value denotes the analog input value (voltage or current) that makes the digital output value:

4000 (in normal resolution mode)

12000 (when 0 to 5 V, 1 to 5 V, 4 to 20 mA, 0 to 20 mA or the user range setting is selected in high resolution mode)

16000 (when -10 to 10 V or 0 to 10 V is selected in high resolution mode).

3 - 2

3 - 2

3 SPECIFICATIONS

MELSEC-Q

(1)Voltage input characteristic

(a)Voltage input characteristic in normal resolution mode

Figure 3.1 shows a graph of the voltage input characteristic in normal resolution mode.

Analog input practical range

 

4095

 

 

 

 

 

 

 

4000

 

 

 

 

 

 

 

 

 

 

 

 

 

3) 4)

 

2000

 

 

2)

 

 

 

 

 

 

 

 

 

 

value

 

 

 

 

 

1)

 

 

 

 

 

 

 

 

Digital output

0

 

 

1

 

 

 

–96

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–2000

 

 

 

 

 

 

 

–4000

 

 

 

 

 

 

 

–4096

 

 

 

 

 

 

 

–15

–10

–5

0

5

10

15

 

 

 

 

Analog input voltage (V)

 

 

 

Number

Analog input

Offset value

Gain value

Digital output value

2

Maximum

range setting

 

resolution

 

 

 

 

 

1)

1 to 5 V

1 V

5 V

0 to 4000

 

1.0 mV

2)

0 to 5 V

0 V

5 V

 

1.25 mV

 

 

3)

–10 to 10 V

0 V

10 V

–4000 to 4000

 

2.5 mV

4)

0 to 10 V

0 V

10 V

0 to 4000

 

2.5 mV

User range setting

1

1

–4000 to 4000

 

0.375 mV

 

 

 

Figure 3.1 Voltage input characteristic in normal resolution mode

3 - 3

3 - 3

Mitsubishi Electronics Q68ADV, Q64AD, Q68ADI User Manual

3 SPECIFICATIONS

MELSEC-Q

(b)Voltage input characteristic in high resolution mode

Figure 3.2 shows a graph of the voltage input characteristic in high resolution

 

 

 

mode.

 

 

 

 

 

 

 

 

 

Analog input practical range

 

 

 

 

 

16383

 

 

 

 

 

 

 

 

 

16000

 

 

 

 

 

 

 

 

 

12287

 

 

 

 

 

 

 

 

 

12000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3) 4)

 

 

 

 

8000

 

 

2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

value

 

 

 

 

 

1)

 

 

 

output

0

 

 

1

 

 

 

 

 

–288

 

 

 

 

 

 

 

Digital

 

 

 

 

 

 

 

 

–384

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–8000

 

 

 

 

 

 

 

 

–16000

 

 

 

 

 

 

 

 

–16384

 

 

 

 

 

 

 

 

 

–15

–10

–5

0

5

10

 

15

 

 

 

 

 

Analog input voltage (V)

 

 

 

Number

 

Analog input

 

Offset value

Gain value

Digital output value

2

Maximum

 

range setting

 

 

resolution

 

 

 

 

 

 

 

 

1)

 

1 to 5 V

 

1 V

5 V

 

0 to 12000

 

0.333 mV

2)

 

0 to 5 V

 

0 V

5 V

 

 

0.416 mV

 

 

 

 

 

3)

 

–10 to 10 V

 

0 V

10 V

–16000 to 16000

 

0.625 mV

4)

 

0 to 10 V

 

0 V

10 V

 

0 to 16000

 

0.625 mV

 

User range setting

1

1

–12000 to 12000

 

0.333 mV

 

 

 

 

Figure 3.2 Voltage input characteristic in high resolution mode

3 - 4

3 - 4

3 SPECIFICATIONS

POINT

MELSEC-Q

(1)Set within the analog input range and digital output range for each input range. If these ranges are exceeded, the maximum resolution and accuracy may not fall within the performance specifications. (Avoid using the dotted line area shown in Figures 3.1 and 3.2.)

(2)Do not input an analog input voltage of more than ± 15 V. The input elements may be damaged.

(3)Set the offset/gain values for the user setting range 1 within a range in which the following conditions are satisfied.

{ (Gain value) – (Offset value) } > A

<Value of A>

Normal resolution mode

High resolution mode

1.5 V

4.0 V

(4)When an analog value that exceeds the range for the digital output value 2 is entered, the digital output value will be fixed at the maximum or minimum value.

 

Analog input range

Normal resolution mode

High resolution mode

 

 

setting

Minimum

Maximum

Minimum

Maximum

 

 

1 to 5 V

–96

 

–288

12287

 

 

0 to 5 V

 

 

 

 

 

 

 

 

 

–10 to 10 V

–4096

4095

–16384

16383

 

 

0 to 10 V

–96

 

–384

 

 

 

 

 

 

User range setting

–4096

 

–12288

12287

 

 

 

 

 

 

 

 

3 - 5

3 - 5

3 SPECIFICATIONS

MELSEC-Q

(2)Current input characteristic

(a)Current input characteristic in normal resolution mode

Figure 3.3 shows a graph of the current input characteristic in normal resolution mode.

Analog input practical range

 

4095

 

 

 

 

 

 

 

4000

 

 

 

 

 

 

 

 

 

 

 

 

 

1)

 

2000

 

 

 

 

 

 

 

 

 

 

2)

 

 

 

value

 

 

 

 

 

 

 

Digital output

0

 

 

4

 

 

 

–96

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–2000

 

 

 

 

 

 

 

–4000

 

 

 

 

 

 

 

–4096

 

 

 

 

 

 

 

–30

–20

–10

0

10

20

30

 

 

 

 

Analog input current (mA)

 

 

 

Number

Analog input

Offset value

Gain value

Digital output value

2

Maximum

range setting

 

resolution

 

 

 

 

 

1)

4 to 20 mA

4 mA

20 mA

0 to 4000

 

4

A

2)

0 to 20 mA

0 mA

20 mA

 

5

A

 

 

User range setting

1

1

–4000 to 4000

 

1.37

A

 

 

 

Figure 3.3 Current input characteristic in normal resolution mode

3 - 6

3 - 6

3 SPECIFICATIONS

MELSEC-Q

(b)Current input characteristic in high resolution mode

Figure 3.4 shows a graph of the current input characteristic in high resolution

 

 

 

mode.

 

 

 

 

 

 

 

 

 

 

Analog input practical range

 

 

 

 

 

 

12287

 

 

 

 

 

 

 

 

 

 

12000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1)

 

 

 

6000

 

 

 

 

 

 

 

 

 

 

 

 

 

2)

 

 

 

 

 

 

value

 

 

 

 

 

 

 

 

 

 

Digital output

0

 

 

 

4

 

 

 

 

 

–288

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–6000

 

 

 

 

 

 

 

 

 

–12000

 

 

 

 

 

 

 

 

 

–12288

 

 

 

 

 

 

 

 

 

 

–30

–20

–10

0

10

20

 

30

 

 

 

 

 

 

Analog input current (mA)

 

 

 

 

Number

 

Analog input

 

Offset value

Gain value

Digital output value

2

Maximum

 

range setting

 

 

resolution

 

 

 

 

 

 

 

 

1)

 

4 to 20 mA

 

4 mA

20 mA

 

0 to 12000

 

1.66

A

2)

 

0 to 20 mA

 

0 mA

20 mA

 

 

1.33

A

 

 

 

 

 

 

User range setting

1

1

–12000 to 12000

 

1.33

A

 

 

 

 

Figure 3.4 Current input characteristic in high resolution mode

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3 SPECIFICATIONS

POINT

MELSEC-Q

(1)Set within the analog input range and digital output range for each input range. If these ranges are exceeded, the maximum resolution and accuracy may not fall within the performance specifications. (Avoid using the dotted line area shown in Figures 3.3 and 3.4.)

(2)Do not input an analog input current of more than ± 30 mA. A breakdown may result due to overheating.

(3)Set the offset/gain values for the user setting range 1 within a range in which the following conditions are satisfied.

{ (Gain value) – (Offset value) } > A

<Value of A>

Normal resolution mode

High resolution mode

5.5 mA

16.0 mA

(4)When an analog value that exceeds the range of the digital output value 2 is entered, the digital output value will be fixed at the maximum or minimum value.

Analog input range

Normal resolution mode

High resolution mode

setting

Minimum

Maximum

Minimum

Maximum

4 to 20 mA

–96

 

–288

12287

0 to 20 mA

4095

 

 

 

User range setting

–4096

 

–12288

12287

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3 SPECIFICATIONS

3.1.3 Accuracy

MELSEC-Q

Accuracy is represented with respect to the maximum digital output value. Accuracy does not change and remains within the range listed in the performance specification even if the input characteristic is changed by changing offset/gain settings, input range and resolution mode.

Figure 3.5 shows the range of fluctuation in accuracy when a -10 to 10V range is selected and in normal resolution mode. Accuracy is ± 0.1% (± 4 digits) when the ambient temperature is 25 ± 5°C, ± 0.3% (± 12 digits) when the ambient temperature is 0 to 55 °C with temperature drift compensation, and ± 0.4% (± 16 digits) when the ambient temperature is 0 to 55 °C without temperature drift compensation.

4000

Fluctuation range

value

 

outputDigital

0

 

–4000

–10 V

0 V

10 V

Analog input value

Figure 3.5 Accuracy

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3 SPECIFICATIONS

3.2 Function List

Table 3.2 shows the function list of the A/D converter modules.

MELSEC-Q

Table 3.2 Function list

Item

 

Function

Reference section

A/D conversion enable/

(1)

Specifies whether to enable or disable the A/D conversion for each channel.

Section 3.4.2

disable setting

(2)

By disabling the conversion for the channels that are not used, the

 

sampling time can be shortened.

 

 

 

 

 

(1)

Sampling processing

 

 

 

The A/D conversion for analog input values is performed successively for

 

A/D conversion method

 

each channel, and the digital output value is output upon each conversion.

Section 3.2.1

(2) Averaging processing

 

 

For each channel, A/D conversion values are averaged for the set number of

 

 

 

times or set amount of time, and the average value is output as a digital value.

 

Maximum and minimum

(1) The maximum and minimum values of the digital output values is retained

Section 3.2.2

values hold function

 

in the module.

 

 

 

(1)

Errors arising from changes in the ambient temperature of the module are

 

Temperature drift

 

automatically compensated for to improve conversion accuracy.

——

compensation function

(2)

The temperature drift compensation function can be performed at (A/D

 

 

 

conversion time for all channels) + 160 s.

 

 

(1)

The resolution mode can be switched according to the application, and digital-

 

 

 

value resolution settings of 1/4000, 1/12000 or 1/16000 can be selected.

Section 3.1.1

Resolution mode

(2)

The resolution mode setting is applicable to all channels.

Section 4.5

 

(3)

See Section 3.1.1 for the digital output values and maximum resolution in

 

 

 

 

normal resolution mode and high resolution mode.

 

Online module change

(1) A module change is made without the system being stopped.

Chapter 7

3.2.1 A/D conversion methods

There are two A/D conversion methods, sampling processing and averaging processing.

(1) Sampling processing

A/D conversion is performed successively for the analog input value, and the converted digital output values are stored in the buffer memory.

The sampling processing time depends on the number of channels used (the number of channels set to A/D conversion enable) and whether the temperature drift compensation function is available.

(a)Without the temperature drift compensation function

(Processing time) = (Number of channels used) 80 ( s/1 channel)

(b)With the temperature drift compensation function

(Processing time) = (Number of channels used) 80 ( s/1 channel) + 160 s [Example]

When three channels (channels 1, 2 and 4) are A/D conversion enabled with the temperature drift compensation function, the sampling processing time is 400 s.

3 80 + 160 = 400 ( s)

(2) Averaging processing

For channels for which averaging processing is specified, A/D conversion is performed for the set number of times or the set amount of time. The average value is calculated from the sum of values excluding the maximum and minimum values, and then stored in the buffer memory.

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3 SPECIFICATIONS

MELSEC-Q

(a)When averaging processing is specified for the set amount of time

1)The number of processing repetitions within the set time differs according to the number of channels used (number of channels for which A/D conversion is enabled) and whether or not temperature-drift compensation is used.

• Without the temperature drift compensation function

(Number of

=

(Set time)

1000

processing repetitions)

(Number of channels used)

80 ( s/1 channel)

• With the temperature drift compensation function

 

(Number of

=

(Set time)

1000

processing repetitions)

(Number of channels used)

80 ( s/1 channel) + 160

[Example]

When averaging processing is performed with four channels (channels 1, 2, 3, and 4) for the set time of 50 ms with the temperature drift compensation function on, measurement is performed 104 times and the average value is output.

50

1000

= 104.17 (times) …… Round down the number.

(4

80) + 160

 

2)When 7 or 8 channels are used with the temperature drift compensation function on, set the average time to 3 ms or more.

If the time is set to 2 ms or less, the average number of times becomes less than 3 and it causes the digital output value to become 0 since a sum excluding the maximum and minimum values will be averaged.

(b)When the averaging processing is specified for the set number of times The time required to store the average value calculated using the average number of times in the buffer memory differs according to the number of channels used (the number of channels set to A/D conversion enable) and whether or not the temperature drift compensation is used.

1)Without the temperature drift compensation function (Processing time) = (Set number of times)

{(Number of channels used) 80}/1000

(Unit: ms)

2)With the temperature drift compensation function (Processing time) = (Set number of times)

[{(Number of channels used) 80} + 160]/1000

(Unit: ms)

[Example]

When averaging processing is performed with four channels (1, 2, 3 and 4) for the set number of 100 times with temperature-drift compensation on, an average value is output every 48 ms.

100 {(4 80) + 160} ÷ 1000 = 48 (ms)

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3 SPECIFICATIONS

MELSEC-Q

3.2.2Maximum and minimum values hold function

(1)The maximum and minimum digital output values for each channel are stored in buffer memory addresses 30 to 45 (Un\G30 to Un\G45).

(2)When the operating condition setting completed flag (X09) turns OFF, the values are cleared to 0 and new maximum and minimum values are stored when conversion begins.

(3)Since the area for storing the maximum and minimum values can be rewritten with the sequence program, the maximum and minimum values within a specific period of time can be checked.

3.3 I/O Signals for the PLC CPU

3.3.1 List of I/O signals

Table 3.3 shows a list of the I/O signals for the A/D converter modules.

Note that I/O numbers (X/Y) shown in this chapter and thereafter are the values when the start I/O number for the A/D converter module is set to 0.

Table 3.3 List of I/O signal

Signal direction CPU A/D converter module

Signal direction CPU A/D converter module

Device No. (Input)

Signal name

 

Device No. (Output)

Signal name

 

X0

Module READY

 

Y0

 

 

X1

Temperature drift compensation flag

Y1

 

 

X2

 

 

Y2

 

 

X3

 

 

Y3

 

 

X4

 

 

Y4

Use prohibited

1

 

 

 

X5

Use prohibited

1

Y5

 

 

 

 

 

X6

 

 

Y6

 

 

X7

 

 

Y7

 

 

X8

 

 

Y8

 

 

X9

High resolution mode status flag

Y9

Operating condition setting request

XA

Offset/gain setting mode flag

YA

User range write request

XB

Channel change completed flag

YB

Channel change request

XC

Use prohibited

1

YC

Use prohibited

1

 

 

XD

Maximum value/minimum value reset

YD

Maximum value/minimum value reset

completed flag

 

request

 

 

 

 

 

XE

A/D conversion completed flag

YE

Use prohibited

1

 

XF

Error flag

 

YF

Error clear request

POINT

1 These signals cannot be used by the user since they are for system use only.

If these are turned ON/OFF by the sequence program, the functioning of the

A/D converter module cannot be guaranteed.

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3 SPECIFICATIONS

3.3.2 Details of I/O signals

MELSEC-Q

I/O signals for the A/D converter modules are explained in detail below.

(1) Input signals

Device No.

Signal Name

 

 

 

 

 

 

 

 

 

 

Description

 

 

 

(1) When the PLC CPU is powered on or reset, this signal turns on once the

 

 

 

preparation for A/D conversion has been completed, and A/D conversion

 

 

 

processing is then performed.

 

X0

Module READY

(2) When the Module READY signal is off, A/D conversion processing is not performed.

 

 

 

Module READY (X0) turns off in the following situations:

 

 

 

 

• During offset/gain setting mode

 

 

 

 

• When the A/D converter module has a watchdog timer error

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1

Temperature drift

(1) When A/D conversion processing is being performed with the temperature drift

compensation flag

 

compensation function on, the flag indicating temperature drift compensation status

 

 

(X1) turns ON.

 

 

 

 

 

X8

High resolution

(1)

This turns ON when in high resolution mode.

 

mode status flag

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)

This is used as an interlock condition for turning the operating condition setting

 

 

 

request (Y9) ON/OFF when the setting for A/D conversion enable/disable (buffer

 

 

 

memory address 0: Un\G0) is changed.

 

 

 

(2) When the operating condition setting completed flag (X9) is OFF, A/D conversion

 

 

 

processing is not performed. Under the following conditions, the operating condition

 

 

 

setting completed flag (X9) turns OFF.

 

 

 

 

• When Module READY (X0) is OFF

 

 

 

 

• When operating condition setting request (Y9) is ON

 

 

Operating

 

 

 

 

 

 

 

 

 

 

Performed by the A/D converter module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Performed by the sequence program

 

 

 

 

 

 

 

 

 

 

 

X9

condition setting

 

 

 

 

 

 

 

 

 

 

 

 

 

completed flag

 

Module READY (X0)

 

 

 

 

Operating condition

 

 

 

 

setting completed (X9)

 

 

 

 

Operating condition

 

 

 

 

change request (Y9)

 

A/D conversion completed (XE)

1 A watchdog timer error occurs when the program calculations are not completed within the scheduled time due to malfunctions of A/D converter module hardware. When a watchdog timer error occurs, the RUN LED for the A/D converter module turns off.

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