Mitsubishi Q62DA User manual

Digital-Analog Converter Module User's Manual
U
Digital-Analog Converter
Module
Digital-Analog Converter
Module
User's Manual User's Manual
Mitsubishi Programmable
Logic Controller
Specifications subject to change without notice.
HEAD OFFICE : MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO 100-8310 TELEX : J24532 CABLE MELCO TOKYO
NAGOYA WORKS : 1-14 , YADA-MINAMI 5 , HIGASHI-KU, NAGOYA , JAPAN
MODEL
MODEL
CODE
Q-D/A-U-S-E
13JR02
SH(NA)-080054-D(0106)MEE
Q62DA
Q64DA
Q68DAV
Q68DAI
GX Configurator-DA
(SW0D5C-QDAU-E)
When exported from Japan, this manual does not require application to the
Ministry of Economy, Trade and Industry for service transaction permission.

A - 1 A - 1
•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 of the CPU module to use.
In this manual, the safety instructions are ranked as "DANGER" and "CAUTION".
!DANGER
CAUTION
!
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in medium or slight personal injury or physical damage.
Note that the !CAUTION level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to personal safety.
Please save this manual to make it accessible when required and always forward it to the end user.
[DESIGN 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 - 2 A - 2
[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.
•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 - 3 A - 3
[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.
•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.
[DISPOSAL PRECAUTIONS]
!CAUTION
•When disposing of this product, treat it as industrial waste.

A - 4 A - 4
REVISIONS The manual number is given on the bottom left of the back cover.
Print Date Manual Number Revision
Dec., 1999 SH (NA)-080054-A First printing
Oct., 2000 SH (NA)-080054-B Add the contents of the function version B.
Correction
About the Generic Terms and Abbreviations, Section 2.1, Section 3.1.3,
3.3.1, 3.4, Section 4.3, Section 5.2.1, 5.2.2, 5.3.3, 6.5.1
Partial addition
Section 1.1, Section 3.1.1, 3.1.2, 3.2.1, 3.2.2, 3.3.1, 3.3.2, 3.4.3, Section
4.5, Section 5.6.1, Section 7.2.3, 7.2.4
Addition
Section 1.2, Section2.2, Section 3.2.3, App-1, 1.1, 1.2, 1.3
Dec., 2000 SH (NA)-080054-C Addition of Models
Q68DAV, Q68DAI
Correction
Section 3.2, 3.2.1, 3.2.2, 3.2.3, 3.3.1, 3.3.2, 3.4.1, 3.4.2, 3.4.3, 3.4.4,
3.4.6, 3.4.7, Section 4.5, Section 7.2.3, App-1.3
Partial addition
About the Generic Terms and Abbreviations, Product Structure,
Chapter 1, Section 1.1, Section 2.1, Section 3.1.1, 3.1.4, Section 4.1, 4.3,
Section 7.1, App-2
Jun., 2001 SH (NA)-080054-D Standardize the name from software package (GPP function) to Product
name (GX Developer).
Standardize the name from utility package (QDAU) to Product name (GX
Configurator-DA).
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
Japanese Manual Version SH-080027-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.
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- 8
About the Generic Terms and Abbreviations................................................................................................A- 8
Product Structure ...........................................................................................................................................A- 9
1 OVERVIEW 1- 1 to 1- 2
1.1 Features ..................................................................................................................................................1- 1
1.2 Functions Added by Function Version B................................................................................................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 3-20
3.1 Performance Specifications....................................................................................................................3- 1
3.1.1 Performance specifications list........................................................................................................3- 1
3.1.2 I/O conversion characteristics..........................................................................................................3- 2
3.1.3 Accuracy...........................................................................................................................................3- 9
3.1.4 Conversion speed ............................................................................................................................3- 9
3.2 D/A Conversion Module Function...........................................................................................................3-10
3.2.1 Synchronous output function ...........................................................................................................3-10
3.2.2 Analog output HOLD/CLEAR function.............................................................................................3-11
3.2.3 Analog output test during PLC CPU STOP.....................................................................................3-12
3.3 I/O Signals for the PLC CPU ..................................................................................................................3-13
3.3.1 List of I/O signals..............................................................................................................................3-13
3.3.2 Details of I/O signals ........................................................................................................................3-14
3.4 Buffer Memory.........................................................................................................................................3-17
3.4.1 Buffer memory assignment..............................................................................................................3-17
3.4.2 D/A conversion enable/disable (buffer memory address 0: Un\G0)...............................................3-18
3.4.3 CH digital values (buffer memory addresses 1 to 8: Un\G1 to Un\G8)......................................3-18
3.4.4 CH set value check codes (buffer memory addresses 11 to 18: Un\G11 to Un\G18)...............3-19
3.4.5 Error codes (buffer memory address 19: Un\G19) .........................................................................3-19
3.4.6 Setting range (buffer memory address 20 and 21: Un\G20 and Un\G21).....................................3-20
3.4.7 Offset/gain setting mode and offset/gain specification
(buffer memory addresses 22 and 23: Un\G22 and Un\G23)........................................................3-20
3.4.8 Setting value specification (buffer memory address 24: Un\G24)..................................................3-20

A - 6 A - 6
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................................................................................................................................4-11
5 UTILITY PACKAGE (GX Configurator-DA) 5- 1 to 5-18
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............................................................................................................5-18
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 TROUBLESHOOTING 7- 1 to 7- 5
7.1 Error Code List........................................................................................................................................7- 1
7.2 Troubleshooting ......................................................................................................................................7- 2
7.2.1 When the "RUN" LED is flashing or turned off................................................................................7- 2
7.2.2 When the "ERROR" LED is on or flashing......................................................................................7- 2
7.2.3 When an analog output value is not output.....................................................................................7- 3
7.2.4 Checking the D/A conversion module status using GX Developer system monitor......................7- 4

A - 7 A - 7
APPENDIX App- 1 to App- 4
Appendix 1 Function upgrade for the D/A conversion module.................................................................App- 1
Appendix 1.1 A comparison of functions of the D/A conversion module..............................................App- 1
Appendix 1.2 Combinations of functions of the function version B D/A conversion module
and the GX Configurator-DA software version...............................................................App- 1
Appendix 1.3 Precautions when replacing the function version A module with function version B ....App- 2
Appendix 2. External Dimension Diagram ................................................................................................App- 3
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 CPU module to
use.
The CE logo is printed on the rating plate on the main body of the PLC that conforms
to the EMC directive and low voltage instruction.
By making this product conform to the EMC directive and low voltage instruction, it is
not necessary to make those steps individually.
About the Generic Terms and Abbreviations
Unless otherwise specified, this manual uses the following generic terms and
abbreviations.
Abbreviation/general terms Description of the abbreviation/general terms
D/A conversion module Generic term for Q62DA, Q64DA, Q68DAV Q68DAI
DOS/V personal computer IBM PC/AT®or compatible computer with DOS/V.
GX Developer Generic product name of the product types SWnD5C-GPPW-E, SWnD5C-GPPW-EA, SWnD5C-GPPW-EV and SWnD5C-GPPW-EVA.
"n" in the model name is 4 or greater.
GX Configurator-DA Generic term for digital-analog conversion module setting and monitor tool GX
Configurator-DA (SW0D5C-QDAU-E)
QCPU (Q mode) Generic term for Q00JCPU, Q00CPU, Q01CPU, Q02CPU, Q02HCPU, Q06HCPU,
Q12HCPU and Q25HCPU
Personal computer Generic term for DOS/V personal computer

A - 9 A - 9
Product Structure
The product structure of this product is given in the table below.
Manual Name Product name Quantity
Q62DA Q62DA Model Digital-Analog Conversion module 1
Q64DA Q64DA Model Digital-Analog Conversion module 1
Q68DAV Model Digital-Analog Conversion module 1
Q68DAV FG terminal L-Shaped metal fitting 1
Q68DAI Model Digital-Analog Conversion module 1
Q68DAI FG terminal L-Shaped metal fitting 1
SW0D5C-QDAU-E GX Configurator-DA Version 1(1-license product) (CD-ROM) 1
SW0D5C-QDAU-EA GX Configurator-DA Version 1(Multiple-license product) (CD-ROM) 1

1 - 1 1 - 1
MELSEC-Q
1 OVERVIEW
1 1 OVERVIEW
This User's Manual describes the specifications, handling and programming methods
for the Q62DA type digital-analog conversion module (hereinafter referred to as the
Q62DA), the Q64DA type digital-analog conversion module (hereinafter referred to
as the Q64DA), the Q68DAV type digital-analog conversion module (hereinafter
referred to as the Q68DAV) and the Q68DAI type digital-analog conversion module
(hereinafter referred to as the Q68DAI) which are used in conjunction with MELSEC-
Q series CPU module (hereinafter referred to as the PLC CPU).
In this manual, the Q62DA, Q64DA, Q68DAV and Q68DAI are collectively referred to
as the D/A (Digital-Analog) conversion modules.
1.1 Features
(1) Available models
• Q62DA ........ 2 channels: Voltage or current output can be selected for each
channel.
• Q64DA ........ 4 channels: Voltage or current output can be selected for each
channel.
• Q68DAV........8 channels: All of which are voltage output.
• Q68DAI ........8 channels: All of which are current output.
(2) High-speed conversion processing
Conversion processing is performed at a speed of 80 s/channel.
(3) High degree of accuracy
The conversion accuracy 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 digital-
value resolution settings of 1/4000, 1/12000 or 1/16000 can be selected.
(5) Changing the output range
The output range 1can easily be changed using GX Developer.
1 The output range refers to the type of offset/gain settings. The most
frequently used range is set as the default but the user can also specify their
own offset/gain settings.
(6) Synchronous output function
This function sets a constant time (120 s) until the analog value is output after
the digital value is written from the PLC CPU. Highly accurate analog control can
be achieved by combining this function with a constant cycle execution type
program for the PLC CPU or the constant scan function 2.
2 The constant scan function executes the sequence program within a fixed
time interval.
(7) Analog output HOLD/CLEAR function
This function is set to either retain or clear the analog output value when the CPU
module is in the STOP status or when a stop error occurs.

1 - 2 1 - 2
MELSEC-Q
1 OVERVIEW
1
(8) Easy settings using the utility package
A utility package is sold separately (GX Configurator-DA).
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.
1.2 Functions Added by Function Version B
The functions added by the function version B D/A conversion module are listed below.
Item Function overview Reference section
Multiple PLC system
compatibility Compatible with a Multiple PLC system. Section 2.1
Analog output test during
PLC CPU STOP When the CH. output enable/disable flag is forced ON during PLC CPU STOP, the D/A converted value is output. Section 3.2.3
Resolution mode The resolution mode can be changed according to the application, and
a resolution setting can be selected from 1/4000, 1/12000 and 1/16000. Section 3.2
High resolution mode
status flag (X8) This turns ON when in high resolution mode. Section 3.3
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.

2 - 1 2 - 1
MELSEC-Q
2 SYSTEM CONFIGURATION
2
2 SYSTEM CONFIGURATION
2.1 Applicable Systems
This section describes the system configuration for the D/A conversion module.
(1) Applicable module and the number of modules that can be installed
The following are the CPU module and network module (for remote I/O stations)
in which the D/A conversion module can be installed and the number of modules
that can be installed.
Applicable module Number of modules that
can be installed Remarks
Q02CPU
Q02HCPU
Q06HCPU
Q12HCPU
Q25HCPU
Maximum 64 Can be installed in Q mode only
(1)
Q00JCPU Maximum 16
CPU module
Q00CPU
Q01CPU Maximum 24 (1)
Network module
QJ72LP25-25
QJ72BR15
QJ72LP25G
QJ71LP25GE
Maximum 64 MELSECNET/H Remote I/O
station ( 2)
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 conversion module can be installed
The D/A conversion 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 D/A conversion module is used with a multiple PLC system.
(a) Compatible D/A conversion module
Use a D/A conversion 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 D/A conversion module only.

2 - 2 2 - 2
MELSEC-Q
2 SYSTEM CONFIGURATION
2
(4) Software packages supported
Correspondence between systems which use D/A conversion modules and
software packages are as shown below.
The GX Developer is necessary when using a D/A conversion module.
Software Version
GX Developer GX Configurator-DA 4
If installed in the Q02/Q02H/Q06H/
Q12H/Q25HCPU Version 4 or later SW0D5C-QDAU-E 00A or later
If installed in the
Q00J/Q00/Q01CPU Version 7 or later
Version 1.10L or later
(cannot be used with the
SW0D5C-QDAU-E
60G or earlier versions).
If installed in a multiple PLC system Version 6 or later SW0D5C-QDAU-E 20C
or later
If installed in a MELSECNET/H
remote I/O station Version 6 or later SW0D5C-QDAU-E 50F
or later
4 It is not compatible with the high resolution mode in SW0D5C-QDAU-E 10B or earlier versions.
See Appendix 1.2 for details.

2 - 3 2 - 3
MELSEC-Q
2 SYSTEM CONFIGURATION
2.2 How to Check the Function Version and Software Version
This section describes how to check the function version of the D/A conversion module
and the GX Configuration-DA software version.
(1) How to check the function version of the D/A conversion module
(a) To check the version using the "SERIAL column of the rating plate" located
on the side of the module
Function version
(b) To check the version using the GX Developer
See Section 7.2.4 of this manual.
(2) How to check the GX Configuration-DA software version
The GX Configuration-DA software version can be checked in GX Developer's
"Product information" screen.
[Startup procedure]
GX Developer "Help" Product information
Software version
(In the case of GX Developer Version 7)

2 - 4 2 - 4
MELSEC-Q
2 SYSTEM CONFIGURATION
REMARK
The version indication for the GX Configurator-DA has been changed as shown
below from the SW0D5C-QDAU-E 60G upgrade product.
Previous product Upgrade and subsequent versions
SW0D5C-QDAU-E 60G GX Configurator-DA Version 1.10L

3 - 1 3 - 1
MELSEC-Q
3 SPECIFICATIONS
3
3 SPECIFICATIONS
3.1 Performance Specifications
3.1.1 Performance specifications list
Table 3.1 Performance specifications list
Model name
Item Q62DA Q64DA Q68DAV Q68DAI
Number of analog output points 2 points (2 channels) 4 points (4 channels) 8 points (8 channels)
Digital input 16-bit signed binary (normal resolutionmode: -4096 to 4095,
high resolution mode: -12288 to 12287, -16384 to 16383)
Voltage –10 to 10 V DC (External load resistance value: 1 k to 1M )—
Analog
output Current 0 to 20 mA DC
(External load resistance value: 0 to 600 )—0 to 20 mA DC
(External load resistance
value: 0 to 600 )
Normal resolution mode High resolution mode
Analog output range Digital input value Maximum
resolution Digital input value Maximum resolution
0 to 5V 1.25 mV 0.416 mV
1 to 5V 0 to 4000 1.0 mV 0 to 12000 0.333 mV
-10 to 10V 2.5 mV -16000 to 16000 0.625 mV
Voltage
User range
setting -4000 to 4000 0.75 mV -12000 to 12000 0.333 mV
0 to 20 mA 5 A1.66A
4 to 20 mA 0 to 4000 4 A0 to 12000 1.33 A
Current User range
setting -4000 to 4000 1.5 A -12000 to 12000 0.83 A
I/O characteristics,
Maximum resolution
Ambient temperature
25 ± 5 °C Within ± 0.1 % (Voltage: ±10 mV, Current: ± 20 A)
Accuracy
(Accuracy in
respect to
maximum
analog
output value)
Ambient temperature
0 to 55 °C Within ± 0.3 % (Voltage: ± 30 mV, Current: ± 60 A)
Conversion speed 80 s/channel
Voltage ± 12 V —
Absolute
maximum
output Current 21 mA — 21 mA
Output short circuit protection Available
Insulation method Between the I/O terminal and PLC power supply :
Between output channels :
Between external supply power and analog output :
Photo coupler insulation
No insulation
No insulation
Number of occupied points 16 points
Connected terminals 18-points terminal block
Applicable wire size 0.3 to 0.75 mm2
Applicable solderless terminal R 1.25-3
(A solderless terminal with sleeve cannot be used)
FG terminal: R1.25-3, 1.25-YS3, RAV1.25-3, V1.25-YS3A
Other terminals than FG: R1.25-3 (A solderless terminal
with sleeve cannot be used)
24 V DC + 20 %, – 15 %
Ripple, spike 500 mV P-P or less
Inrush current: 1.9 A,
within 300 sInrush current: 3.1 A,
within 300 sInrush current: 3.3 A, within 70 sInrush current: 3.1 A, within 75 s
External supply power
0.12A0.18A0.19A0.28A
Internal current consumption (5 V DC) 0.33A0.34A0.39A0.38A
Weight 0.19 kg 0.18 kg
REMARK
See the user's manual for the CPU module being used for the general specifications
for the D/A conversion module.

3 - 2 3 - 2
MELSEC-Q
3 SPECIFICATIONS
3
3.1.2 I/O conversion characteristics
I/O conversion characteristics are used for converting the digital value written from the
PLC CPU to an analog output value (voltage or current output), and represented by
inclined straight lines when offset and gain values are included.
Offset value
The offset value becomes the analog output value (voltage or current) when the digital
input value set from the PLC CPU is 0.
Gain value
The gain value denotes the analog output value (voltage or current) when the digital
input value set from the PLC CPU is
4000 (in normal resolution mode),
12000 (when 1 to 5V, 0 to 5V, 4 to 20 mA, 0 to 20 mA or the user range setting is
selected in high resolution mode),
16000 (when -10 to 10V is selected in high resolution mode).

3 - 3 3 - 3
MELSEC-Q
3 SPECIFICATIONS
(1) Voltage output characteristic
(a) Voltage output characteristic in normal resolution mode
Figure 3.1 shows a graph of the voltage output characteristic in normal
resolution mode.
Analog output value (V)
Digital input value
1)
2)
3)
4095
40002000-2000-4000-4096
-10
-5
0
5
10
Analog output pratical range
0
1
Number Output value
range setting Offset value Gain value Digital input value Maximum resolution
1) 1 to 5 V 1 V 5 V 1.0 mV
2) 0 to 5 V 0 V 5 V 0 to 4000 1.25 mV
3) –10 to 10 V 0 V 10 V –4000 to 4000 2.5 mV
—User range setting 1 1 –4000 to 4000 0.75 mV
Figure 3.1 Voltage output characteristic in normal resolution mode

3 - 4 3 - 4
MELSEC-Q
3 SPECIFICATIONS
(b) Voltage output characteristic in high resolution mode
Figure 3.2 shows a graph of the voltage output characteristic in high
resolution mode.
Analog output value (V)
Digital input value
1)
2)
3)
16383160008000-8000-16000-16384
-10
-5
0
5
10
Analog output practical range
0
1
12000
12287
Number Output value
range setting Offset value Gain value Digital input value Maximum resolution
1) 1 to 5 V 1 V 5 V 0.333 mV
2) 0 to 5 V 0 V 5 V 0 to 12000 0.416 mV
3) –10 to 10 V 0 V 10 V –16000 to 16000 0.625 mV
—User range setting 1 1 –12000 to 12000 0.333 mV
Figure 3.2 Voltage output characteristic in high resolution mode