Mitsubishi Electric AJ65BT64DAV/DAI User manual

Digital-Analog Converter Module type AJ65BT-
64DAV/DAI User's Manual
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A - 1
•SAFETY PRECAUTIONS •
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full
attention to safety to handle the product correctly.
The instructions given in this manual are concerned with this product. Refer to the user's manual of the
CPU module to use for a description of the programmable controller system safety instructions.
In this manual, the safety precautions are classified into two levels: " WARNING" and " 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 minor or moderate injury or property damage.
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
[Design Precautions]
WARNING
•Install a safety circuit external to the programmable controller that keeps the entire system safe
even when there are problems with the external power supply or the programmable controller.
Otherwise, trouble could result from erroneous output or erroneous operation.
(1) The status of analog output changes depending on the setting of various functions that
control the analog output. Take sufficient caution when setting for those functions.
For details of analog output status, refer to Section 3.4.5 ”Combinations of various functions”
(2) Normal output may not be obtained due to malfunctions of output elements or the internal
circuits. So build an external monitoring circuit that will monitor any single outputs that could
cause serious trouble.
!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(3.94inch) or more from each other.
Not doing so could result in noise that would cause erroneous operation.
•At power ON/OFF, voltage or current may instantaneously be output from the output terminal of
this module.
In such case, wait until the analog output becomes stable to start controlling the external device.
WARNING
CAUTION
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A - 2
[Installation Precautions]
!CAUTION
•Use the module in the environment given in the general specifications of this Manual.
Using this programmable controller in an environment outside the range of the general
specifications could result in electric shock, fire, erroneous operation, and damage to or
deterioration of the product.
•For protection of the switches, do not remove the cushioning material before installation.
•Securely fix the module with a DIN rail or mounting screws. Tighten the screws within the
specified torque range.
Undertightening can cause drop of the screw, short circuit, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or
malfunction.
•Do not directly touch the module's conductive parts or electronic components.
Touching the conductive parts could cause an operation failure or give damage to the module.
[Wiring Precautions]
!CAUTION
Shut off the external power suppy for the system in all phases before wiring.
Failure to do so may result in damage to the product.
•Be sure to ground the FG terminals to the protective ground conductor. Not doing so could result
in erroneous operation.
Use applicable solderless terminals and tighten them with the specified torque. If any solderless
spade terminal is used, it may be disconnected when the terminal screw comes loose, resulting
in failure.
•When wiring in the programmable controller, be sure that it is done correctly by checking the
product's rated voltage and the terminal layout.
Connecting a power supply that is different from the rating or incorrectly wiring the product could
result in fire or damage.
•Tighten the terminal screws with the specified torque.
If the terminal screws are loose, it could result in short circuits, fire, or erroneous operation.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or
malfunction.
•Be sure there are no foreign substances such as sawdust or wiring debris inside the module.
Such debris could cause fires, damage, or erroneous operation.
•Do not install the control lines together with the communication cables, or bring them close to
each other. Failure to do so may cause malfunctions due to noise.
•When connecting the communication and power supply cables to the module, always run them
in conduits or clamp them.
Not doing so can damage the module and cables due to loose, moved or accidentally pulled
cables or can cause a malfunction due to a cable connection fault.
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[Wiring Precautions]
!CAUTION
When disconnecting the communication and power supply cables from the module, do not hold
and pull the cable part.
Disconnect the cables after loosening the screws in the portions connected to the module.
Pulling the cables connected to the module can damage the module and cables or can cause a
malfunction due to a cable connection fault.
[Starting and Maintenance Precautions]
!CAUTION
•Do not touch the terminals while power is on. Doing so may cause malfunctioning.
•Be sure to shut off all phases of the external power supply used by the system before cleaning
or retightening the terminal screws.
Not doing so can cause the module to fail or malfunction.
•Do not disassemble or modify the modules.
Doing so could cause trouble, erroneous operation, injury, or fire.
Do not drop or apply strong shock to the module. Doing so may damage the module.
Be sure to shut off all phases of the external power supply used by the system before mounting
or dismounting the module to or from the panel.
Not doing so could result in damage to the product.
Do not install/remove the terminal block more than 50 times after the first use of the product.
(IEC 61131-2 compliant)
•Before touching the module, always touch grounded metal, etc. to discharge static electricity
from human body.
Failure to do so can cause the module to fail or malfunction.
[Disposal Precautions]
!CAUTION
•When disposing of this product, treat it as industrial waste.
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A - 4
•CONDITIONS OF USE FOR THE PRODUCT •
(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;
i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or
serious accident; and
ii) where the backup and fail-safe function are systematically or automatically provided outside of the
PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.
(2) The PRODUCT has been designed and manufactured for the purpose of being used in general
industries.
MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT LIMITED
TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT, WARRANTY, TORT,
PRODUCT LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR LOSS OR DAMAGE TO
PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT
INTENDED OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS, OR WARNING CONTAINED IN
MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY MANUALS, TECHNICAL BULLETINS AND
GUIDELINES FOR the PRODUCT.
("Prohibited Application")
Prohibited Applications include, but not limited to, the use of the PRODUCT in;
yNuclear Power Plants and any other power plants operated by Power companies, and/or any other
cases in which the public could be affected if any problem or fault occurs in the PRODUCT.
yRailway companies or Public service purposes, and/or any other cases in which establishment of a
special quality assurance system is required by the Purchaser or End User.
yAircraft or Aerospace, Medical applications, Train equipment, transport equipment such as Elevator
and Escalator, Incineration and Fuel devices, Vehicles, Manned transportation, Equipment for
Recreation and Amusement, and Safety devices, handling of Nuclear or Hazardous Materials or
Chemicals, Mining and Drilling, and/or other applications where there is a significant risk of injury to
the public or property.
Notwithstanding the above, restrictions Mitsubishi may in its sole discretion, authorize use of the
PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is
limited only for the specific applications agreed to by Mitsubishi and provided further that no special
quality assurance or fail-safe, redundant or other safety features which exceed the general
specifications of the PRODUCTs are required. For details, please contact the Mitsubishi
representative in your region.
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A - 5
REVISIONS
* The manual number is given on the bottom left of the back cover.
Print Date * Manual Number Revision
Jan., 1997 SH(NA)-3615-A First printing
Jun., 2000 SH(NA)-3615-B Addition of Q series types
Chapter 2, Section 3.2, Section 3.4.1, Section 3.6.3, Section 4.2,
Section 6.2
Partial changes
Section 1.1(3), Section 3.1, Section 3.2, Section 3.4.5, Section 4.1,
Section 4.6.2, Section 4.7.2, Section 5.2
Sep., 2004 SH(NA)-3615-C Addition
Conformation to the EMC Directive and Low Voltage Instruction
Correction
SAFETY PRECAUTIONS, About this Manual, Chapter 1, Chapter 2,
Section 3.1, Section 3.2, Section 3.6.4, Section 3.6.5, Section 4.1,
Section 4.4, Section 4.6, Section 4.6.1, Section 4.6.2, Section 4.7.2,
Chapter 5, Section 6.2
Jul., 2005 SH(NA)-3615-D Correction
SAFETY PRECAUTIONS
Oct., 2006 SH(NA)-3615-E Correction
SAFETY PRECAUTIONS, Section 4.2
Dec., 2006 SH(NA)-3615-F Partial correction
Chapter 2(1), Section 3.5.1, Chapter 5
Dec., 2010 SH(NA)-3615-G Addition
CONDITIONS OF USE FOR THE PRODUCT
Correction
SAFETY PRECAUTIONS, Chapter 1, Section 1.1, Chapter 2,
Section 3.1 to Section 3.5, Section 3.5.2, Section 3.6.1, Section 3.6.2,
Section 4.1, Section 4.3, Section 4.6.2, Section 4.7.1, Section 5.1,
Section 5.1, Section 5.2, Section 5.3, Section 5.6, Chapter 6,
Section 6.1, Section 6.2, Appendix 2
Delection
Section 4.6.1
Japanese Manual Version SH-3600-I
This manual does not imply guarantee or implementation right for industrial ownership or implementation
of other rights. Mitsubishi Electric Corporation is not responsible for industrial ownership problems caused
by use of the contents of this manual.
©1997 MITSUBISHI ELECTRIC CORPORATION
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A - 6
Introduction
Thank you for purchasing the Mitsubishi MELSEC-A Series General Purpose Programmable Controller.
Before using the equipment, plese read this manual carefully to develop full familiarity with the functions and
performance of the graphic operation terminal you have purchased, so as to ensure correct use.
Please forward a copy of this manual to the end user.
Table of Contents
1. OVERVIEW 1- 1 to 1- 2
1.1 Features ................................................................................................................................................... 1- 1
2. SYSTEM CONFIGURATION 2- 1 to 2- 2
3. SPECIFICATIONS 3- 1 to 3-14
3.1 General Specification............................................................................................................................... 3- 1
3.2 Performance Specification....................................................................................................................... 3- 2
3.3 I/O Conversion Characteristics................................................................................................................ 3- 4
3.3.1 Offset value and gain value........................................................................................................... 3- 4
3.3.2 I/O conversion characteristics....................................................................................................... 3- 4
3.4 Various Functions to Control the Analog Output .................................................................................... 3- 8
3.4.1 Function to specify hold or clear of the analog output when the programmable controller
CPU is in the STOP status (HOLD/CLEAR setting) .................................................................... 3- 8
3.4.2 Function to specify executing or not executing the D/A conversion processing
(Analog output enable/disable flag).............................................................................................. 3- 8
3.4.3 Function to specify enabling or prohibiting of the analog value external output
(Analog output enable/prohibit setting) ........................................................................................ 3- 8
3.4.4 Offset/gain setting.......................................................................................................................... 3- 8
3.4.5 Combinations of various functions................................................................................................ 3- 8
3.5 I/O Signals to the Master Station............................................................................................................ 3-10
3.5.1 I/O signal list ................................................................................................................................. 3-10
3.5.2 Functions of the I/O signals.......................................................................................................... 3-11
3.6 Remote Register ..................................................................................................................................... 3-12
3.6.1 Allocation of the remote register .................................................................................................. 3-12
3.6.2 Digital value setting area for channels 1 through 4 ..................................................................... 3-13
3.6.3 Analog output enable/prohibit channel ........................................................................................ 3-13
3.6.4 Set value checking code storage area for channels 1 through 4 ............................................... 3-14
3.6.5 Error code..................................................................................................................................... 3-14
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4. SETUP AND PREPARATION BEFORE OPERATION 4- 1 to 4- 8
4.1 Precautions When Handling .................................................................................................................... 4- 1
4.2 Name of Each Part................................................................................................................................... 4- 2
4.3 Offset/Gain Setting................................................................................................................................... 4- 4
4.4 Station Number Setting............................................................................................................................ 4- 5
4.5 Facing Direction of the Module Installation ............................................................................................. 4- 5
4.6 Data link Cable Wiring ............................................................................................................................. 4- 6
4.6.1 CC-Link dedicated cable connections .......................................................................................... 4- 6
4.7 Wiring........................................................................................................................................................ 4- 7
4.7.1 Precautions when wiring ............................................................................................................... 4- 7
4.7.2 Wiring between the AJ65BT-64DAV/DAI and external devices .................................................. 4- 7
5. PROGRAMMING 5- 1 to 5-18
5.1 Programming Procedure.......................................................................................................................... 5- 1
5.2 Conditions of Program Example.............................................................................................................. 5- 2
5.3 Program Example for Use of the QCPU (Q mode)................................................................................. 5- 4
5.4 Program Example for Use of the QnACPU............................................................................................ 5-10
5.5 Program Example for Use of the ACPU/QCPU (A mode) (dedicated instructions) ............................. 5-12
5.6 Program Example for Use of the ACPU/QCPU (A mode) (FROM/TO instructions) ............................ 5-16
6. TROUBLESHOOTING 6- 1 to 6- 2
6.1 Error Code List ......................................................................................................................................... 6- 1
6.2 Troubleshooting ....................................................................................................................................... 6- 1
6.2.1 When a communication fault occurs between the master station and this module .................... 6- 2
APPENDIX App- 1 to App- 2
Appendix 1 External Dimensions of the AJ65BT-64DAV .........................................................................App- 1
Appendix 2 External Dimensions of the AJ65BT-64DAI...........................................................................App- 2
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A - 8
About this Manual
The following are manuals related to this product.
Request for the manuals as needed according to the chart below.
Related Manuals
Manual Name Manual No.
(Type code)
CC-Link System Master/Local Module Type AJ61BT11/A1SJ61BT11 User's Manual
Describes the system configuration, performance specifications, functions, handling, wiring and
troubleshooting of the AJ61BT11 and A1SJ61BT11. (Optionally available)
IB-66721
(13J872)
CC-Link System Master/Local Module Type AJ61QBT11/A1SJ61QBT11 User's Manual
Describes the system configuration, performance specifications, functions, handling, wiring and
troubleshooting of the AJ61QBT11 and A1SJ61QBT11. (Optionally available)
IB-66722
(13J873)
CC-Link System Master/Local Module User's Manual
Describes the system configuration, performance specifications, functions, handling, wiring and
troubleshooting of the QJ61BT11N. (Optionally available)
SH-080394E
(13JR64)
MELSEC-L CC-Link System Master/Local Module User's Manual
Describes the system configuration, Performance specifications, functions, handling, wiring and
troubleshooting of the L26CPU-BT and LJ61BT11. (Optionally available)
SH-080895ENG
(13JZ41)
Compliance with the EMC and Low Voltage Directives
(1) For programmable controller system
To configure a system meeting the requirements of the EMC and Low Voltage
Directives when incorporating the Mitsubishi programmable controller (EMC and
Low Voltage Directives compliant) into other machinery or equipment, refer to
the "EMC AND LOW VOLTAGE DIRECTIVES" chapter of the User's Manual for
the CPU module used.
The CE mark, indicating compliance with the EMC and Low Voltage Directives,
is printed on the rating plate of the programmable controller.
(2) For the product
For the compliance of this product with the EMC and Low Voltage Directives,
refer to the "CC-Link module" section in the "EMC AND LOW VOLTAGE
DIRECTIVES" chapter of the User's Manual for the CPU module used.
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A - 9
MEMO
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1. OVERVIEW MELSEC-A
1-1
1. OVERVIEW
This user's manual describes the specification and handling of AJ65BT-64DAV digital analog voltage
conversion module (abbreviated as AJ65BT-64DAV from here on) and AJ65BT-64DAI digital analog
current conversion module (abbreviated as AJ65BT-64DAI from here on), which is used as the remote
device station for the CC-Link system.
(1) AJ65BT-64DAV
This is a module which converts the digital values (16-bit encoded binary value) set in the
programmable controller CPU to analog values (-10V to 0V to 10V voltage), and performs an
external output to four channels.
(2) AJ65BT-64DAI
This is a module which converts the digital values (16-bit encoded binary value) set in the
programmable controller CPU to analog values (4mA to 20mA current), and performs an external
output to four channels.
In this manual, the name which refers to both AJ65BT-64DAV and AJ65BT-64DAI is abbreviated as
“AJ65BT-64DAV/DAI.”
1.1 Features
The AJ65BT-64DAV/DAI has the following features:
(1) One module can provide four channels of D/A conversion.
The AJ65BT-64DAV/DAI can produce output of analog values (voltage/current) to four external
devices.
(2) The analog-output enable/prohibit setting is possible for each channel.
The sequence program can specify whether to enable or prohibit analog output to the external
devices after the D/A conversion for each channel.
Analog output from the channel where the analog output is prohibited will be 0V or 0mA.
(3) You can make the analog output hold/clear setting at a programmable controller CPU stop or link
error occurrence (all channels batch).
Using the HOLD/CLR terminal, you can select whether to hold or clear the analog output at the
instant the programmable controller CPU is set to a STOP status or a link error occurs.
(4) Offset and gain setting
When a fine I/O conversion characteristic is required, the offset and gain setting of each channel
can be set without a volume control, enabling to modify the I/O conversion characteristic as
desired.
1
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1. OVERVIEW MELSEC-A
1-2
MEMO
1
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2. SYSTEM CONFIGURATION MELSEC-A
2-1
2. SYSTEM CONFIGURATION
(1) Applicable master modules
For available master modules, visit the CC-Link Partner Associations (CLPA) website at:
http://www.cc-link.org/
Remark
Check the specifications of the master module before use.
2
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2. SYSTEM CONFIGURATION MELSEC-A
2-2
MEMO
2
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3. SPECIFICATIONS MELSEC-A
3-1
3. SPECIFICATIONS
The general specifications, performance specifications, and I/O characteristics of the
AJ65BT-64DAV/DAI are explained.
3.1 General Specification
The general specifications of the AJ65BT-64DAV/DAI are shown in Table 3.1.
Table 3.1 General specification
Item Specification
Usage ambient
temperature 0 to 55°C
Storage ambient
temperature -20 to 75°C
Usage ambient humidity 10 to 90%RH, no condensation
Storage ambient humidity 10 to 90%RH, no condensation
Frequency Acceleration Amplitude
Number of
sweeps
5 to 9Hz — 3.5mm
(0.14 inches)
For intermittent
vibration
9 to 150Hz 9.8m/s2—
10 times in
each X, Y, and
Z direction
5 to 9Hz — 1.75mm
(0.069 inches)
Vibration durability
Conforming to
JIS B 3502,
IEC 61131-2
For continuous
vibration
9 to 150Hz 4.9m/s2—
—
Shock durability Conforming to JIS B 3502, IEC 61131-2
(147m/s2, 3 times each in XYZ directions)
Usage environment No corrosive gas
Usage height *1 Less than 2000 m (Less than 6562 ft.)
Installation area Within the control board
Over-voltage category *2Less than II
Pollution rate *3Less than 2
Remark
*1 Do not operate or store the programmable controller in the environment where the pressure
applied is equal to greater than the atmospheric pressure at the altitude of 0m.
Doing so may cause a malfunction. Please consult our branch office when the programmable
controller is to be operated under pressure.
*2 Indicates the location where the device is connected from the public cable network to the device
structure wiring area.
Category II applies to the devices to which the power is supplied from a fixed equipment.
Surge withstand voltage for devices with up to 300V of rated voltage is 2500V.
*3 This is an index which indicates the degree of conductive object generation in the environment
where the device is used. Level 2 is an environment where only nonconductive objects are
formed with some chances of temporary conductivity generation due to occasional condensation.
3
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3. SPECIFICATIONS MELSEC-A
3-2
3.2 Performance Specification
The performance specification of the AJ65BT-64DAV/DAI is shown Table 3.2:
Table 3.2 Performance specification
Specification
Item
AJ65BT-64DAV AJ65BT-64DAI
16-bit encoded binary (valid bit: 12 bits)
Digital input value
-2048 to 2047 0 to 4095
Analog conversion value Voltage: -10 to 10VDC
(External load resistance: 2kΩto 1MΩ)
Current: 4 to 20mADC
(External load resistance: 0 to 600Ω)
Digital input value Analog conversion
value Digital input value Analog conversion value
2000 10V 4000 20mA
1000 5V 2000 12mA
0 0V 0 4mA
-1000 -5V
I/O characteristics
-2000 -10V
Maximum resolution *15mV 4 μ A
Total accuracy *2
(accuracy for the maximum value) ±1% (±100mV) ±1% (±200
μ A)
Maximum conversion speed *3Max. 1ms per channel (4ms per 4 channels)
Output short-circuit protection Yes
Insulation system Across output channels: Non-insulated
Across external supply power and analog output: Transformer insulated
Analog output points 4 channels per module
Offset/gain adjustment Yes (user setting or factory setting)
CC-Link station type Remote device station
Number of occupied stations 2 stations
Connector terminal block 27-point terminal block (M3.5 ×7 screws)
Supported cable size 0.75 to 2.00mm2
Supported solderless terminal RAV 1.25-3.5 (according to JIS C 2805), RAV 2-3.5
Module installation screw M4 x 0.7mm x 16mm or larger screw (tightening torque 0.78 to 1.18N⋅m)
Installable with the DIN rail.
Supported DIN rail TH35-7.5Fe, TH35-7.5Al,TH35-15Fe
(conforming to JIS C 2812)
24V DC (20.4V DC to 26.4V DC)
Inrush current: 1.5A, within 0.67ms Inrush current: 3.2A, within 0.43ms
External supply power
Current consumption:0.18A (at 24VDC) Current consumption:0.27A (at 24VDC)
Noise resistance Noise voltage: 500Vp-p
Measured using a noise simulator with 1μs of noise amplitude and 25 to 60Hz of noise frequency.
Dielectric withstand voltage Power and communication systems batch-Analog output batch, 500VAC, one minute
Insulation resistor Power and communication systems batch-Analog output batch, 500VDC
10MΩor more at the insulation resistance tester
Weight 0.4kg 0.4kg
3
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3. SPECIFICATIONS MELSEC-A
3-3
*1 Maximum resolution of analog value
The maximum resolution of analog value means the variation of analog value when the digital
value changes for "1".
*2 Total accuracy
The total accuracy is the accuracy of the maximum analog output value.
1The overall accuracy of the AJ65BT-64 DAV is the accuracy for 10V.
0V
-10V
+10V
-2000 20000
Analogoutputvalue
Digital input value
Depending on the operating environment
(
the ambient temperature, noise
)
, it fluctuates
within a range of 1.0% of 10V ( 100mV).
2The overall accuracy of the AJ65BT-64 DAI is the accuracy for 20mA.
20mA
4mA
0mA
0 4000
Analogoutputvalue
Digital input value
Depending on the operating environment
(the ambient temperature, noise), it fluctuates
within a range of 1.0% of 20mA ( 200 A).
*3 Maximum conversion speed
The maximum conversion speed means the time required to read the digital value written in the
buffer memory, execute the D/A conversion, and output the specified analog value. It takes the
longest (1ms) to produce the maximum analog output value when the current output is the
minimum, and to produce the minimum analog output value when the current output is the
maximum.
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3. SPECIFICATIONS MELSEC-A
3-4
3.3 I/O Conversion Characteristics
The I/O conversion characteristics of the AJ65BT-64DAV/DAI are explained.
3.3.1 Offset value and gain value
(1) Offset value
This is an analog value (voltage or current value) produced by the AJ65BT-64DAV/DAI when the
digital value set by the programmable controller CPU is "0".
(2) Gain value
This is an analog value (voltage or current value) produced by the AJ65BT-64DAV/DAI when the
digital value set by the programmable controller CPU is "2000" for AJ65BT-64DAV, and "4000"
for AJ65BT-64DAI.
(3) The factory-set offset and gain values are as follows:
AJ65BT-64DAV AJ65BT-64DAI
Offset value 0V 4mA
Gain value 10V 20mA
(4) The offset value and gain value can be set separately for each channel in the test mode.
3.3.2 I/O conversion characteristics
(1) When AJ65BT-64DAV is used:
15
(V)
10
5
-5
-10
-15
0
-2000
-2048
2000
2047
0
Analogoutputvoltage
Offset value Gain value
Digital input value
A
nalog output
practical range
Figure 3.1 I/O conversion characteristics of the AJ65BT-64DAV
1How to calculate the analog output value:
The resolution of AJ65BT-64DAV can be set arbitrarily by modifying the settings of the offset
value and gain value.
How to calculate the analog value resolution and the analog output value for a given digital
input value when the settings of the offset value and gain value are changed is shown next.
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3. SPECIFICATIONS MELSEC-A
3-5
2The following graph shows the I/O characteristics when the offset and gain values of the
AJ65BT-64DAV are changed:
Example
Figure 3.2 I/O conversion characteristics of AJ65BT-64DAV
The analog output voltage for the characteristic graphs 1to 3becomes as below, when the digital
input value is at 1000 and 500:
Number Digital input value Analog output voltage
1000 5.0V
1500 2.5V
1000 0V
2500 -5.0V
1000 6.0V
3500 5.0V
(Analog resolution) =
2000
(Gain value) - (Offset value)
(Analog output) = (Analog resolution) ×(Digital input value) + (Offset value)
The I/O conversion characteristics are shown in
the graph on the right when the offset value and
the gain value are set as in the following table:
Number Offset value Gain value
10V 10V
2-10V 10V
34V 8V
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