Mitsubishi AJ65BT-64RD3, AJ65BT-64RD4 User Manual

Pt 100 Temperature Input Module Type AJ65BT­64RD3/AJ65BT-64RD4 User's Manual

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.

These precautions apply only to Mitsubishi equipment. Refer to the user's manual of the used CPU

module for a description of the programmable controller system safety precautions.

In this manual, the safety precautions are classified into two levels: "

WARNING" and " CAUTION".

WARNING

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

Indicates that incorrect handling may cause hazardous conditions,

CAUTION

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

z In the case of a communication failure in the network, data in the master module are held.

Check the communication status information (SB, SW) and configure an interlock circuit in the sequence

program to ensure that the entire system will operate safely.

CAUTION

z Do not install the control lines or communication cables together with the main circuit lines or power cables.

Keep a distance of 100mm (3.94 inches) or more between them.

Failure to do so may result in malfunction due to noise.

[Installation Precautions]

CAUTION

z Use the programmable controller in an environment that meets the general specifications in this manual.

Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the product.

z For protection of the switches, do not remove the cushioning material before installation.

z 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.

z Do not directly touch any conductive part of the module.

Doing so can cause malfunction or failure of the module.

[Wiring Precautions]

CAUTION

z Shut off the external power supply for the system in all phases before wiring.

Failure to do so may result in damage to the product.

z After installation or wiring, attach the included terminal cover to the module before turning it on for operation.

Undertightening can cause short circuit or malfunction.

z Ground the FG terminals to the protective ground conductor dedicated to the programmable controller.

Failure to do so may result in malfunction.

z Use applicable solderless terminals and tighten them within the specified torque range.

If any spade solderless terminal is used, it may be disconnected when the terminal screw comes loose,

resulting in failure.

z Check the rated voltage and terminal layout before wiring to the module, and connect the cables correctly.

Connecting a power supply with a different voltage rating or incorrect wiring may cause a fire or failure.

z Tighten the terminal screw within the specified torque range.

Undertightening can cause short circuit or malfunction.

Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.

z Prevent foreign matter such as dust or wire chips from entering the module.

Such foreign matter can cause a fire, failure, or malfunction.

z Place the cables in a duct or clamp them.

If not, dangling cable may swing or inadvertently be pulled, resulting in damage to the module or cables or

malfunction due to poor contact.

[Wiring Precautions]

CAUTION

z Do not install the control lines or communication cables together with the main circuit lines or power cables.

Failure to do so may result in malfunction due to noise.

z When disconnecting the cable from the module, do not pull the cable by the cable part.

Loosen the screws of connector before disconnecting the cable.

Failure to do so may result in damage to the module or cable or malfunction due to poor contact.

[Startup and Maintenance Precautions]

CAUTION

z Do not touch any terminal while power is on.

Doing so may cause malfunction.

z Shut off the external power supply for the system in all phases before cleaning the module or retightening

the terminal screws.

Failure to do so may cause the module to fail or malfunction.

Undertightening the terminal screws can cause short circuit or malfunction.

Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.

z Do not disassemble or modify the modules.

Doing so may cause failure, malfunction, injury, or a fire.

z Do not drop or apply strong shock to the module.

Doing so may damage the module.

z After the first use of the product, do not mount/remove the terminal block to/from the module more than 50

times. (IEC 61131-2 compliant)

z Shut off the external power supply for the system in all phases before mounting or removing the module to

or from the panel.

Failure to do so may cause the module to fail or malfunction.

z Do not remove or change the platinum temperature-measuring resistor designation pin while energizing the

module.

If a platinum temperature-measuring resistor designation pin is removed or changed while energizing, it may

cause failure or malfunction.

z Before handling the module, touch a grounded metal object to discharge the static electricity from the

human body.

Failure to do so may cause the module to fail or malfunction.

[Disposal Precautions]

CAUTION

z When disposing of this product, treat it as an industrial waste.

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;
y Nuclear 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.

y Railway 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.

y Aircraft 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.

Revisions

* The manual number is noted at the lower left of the back cover.

Print Date *Manual Number Revision

May., 1998 SH(NA)-4001-A First printing

Oct., 2004 SH(NA)-4001-B Partial correction

SAFETY PRECAUTIONS,

Chapter 1, Section 2.1, 2.2, 3.1, 3.2, 3.2.2, 3.3.1, 3.3.4, 3.4.1, 3.4.2, 3.5.1,
Section 4.1, 4.2, 4.3, 4.5, 4.7.1, 4.7.2, Chapter 5, Section 5.1, 5.2, 6.1,

Addition

Conformation to the EMC Directive and Low Voltage Instruction, About
Manual, About the Generic Terms and Abbreviations, Product Structure,

Section 5.3, 5.4, 5.5, 5.6, WARRANTY

Deletion

Chapter 3, Section 5.2.1,

Jul., 2005 SH(NA)-4001-C Partial correction

SAFETY PRECAUTIONS

Dec., 2006 SH(NA)-4001-D Partial correction

SAFETY PRECAUTIONS, Section 2.1, 3.2, 3.6.1, 3.7.4, 4.1

Dec., 2010 SH(NA)-4001-E Partial correction

SAFETY PRECAUTIONS, Compliance with the EMC and Low Voltage
Directives, About Generic Terms and Abbreviations, Chapter 1, Section 2.1,

2.2, 3.1, 3.2, 3.2.2, 3.4.1, 4.2, 4.7.4, 5.2, 5.3, 5.6, 6.1, 6.4

Addition

CONDITIONS OF USE FOR THE PRODUCT

Deletion

Section 4.7.1

Renumbering

Section 4.7.2 to 4.7.5 → 4.7.1 to 4.7.4

Japanese Manual Version SH-3652-G

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.

© 1998 Mitsubishi Electric Corporation

Introduction

Thank you for purchasing the Mitsubishi Graphic Operation Terminal.

Before using the equipment, please 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 1-1

1.1 Features............................................................................................................................................................ 1- 1

2. SYSTEM CONFIGURATION 2-1 to 2-2

2.1 Overall Configuration ........................................................................................................................................ 2- 1

2.2 Applicable Systems........................................................................................................................................... 2- 2

3. SPECIFICATIONS 3-1 to 3-15

3.1 General Specification........................................................................................................................................ 3- 1

3.2 Performance Specification ................................................................................................................................ 3- 2

3.2.1 Specifications when connecting to a platinum temperature-measuring resistor.................................... 3- 3

3.2.2 Data link processing time....................................................................................................................... 3- 4

3.3 Function ............................................................................................................................................................ 3- 5

3.3.1 Function list............................................................................................................................................ 3- 5

3.3.2 Conversion enable/disable designation................................................................................................. 3- 6

3.3.3 Sampling processing/travel average processing designation................................................................ 3- 7

3.3.4 Wire breakage detection........................................................................................................................ 3- 9

3.3.5 Detected temperature ............................................................................................................................ 3-10

3.3.6 Designating the platinum temperature-measuring resistor type ............................................................ 3-10

3.4 I/O Signals in Respect to the Master Module.................................................................................................... 3-11

3.4.1 Remote I/O signal list............................................................................................................................. 3-11

3.4.2 I/O signal functions ................................................................................................................................ 3-12

3.5 Remote Register ............................................................................................................................................... 3-14

3.5.1 Remote register assignment.................................................................................................................. 3-14

3.5.2 Remote register for storing detected temperature (Address: RWrn to RWrn+11)................................. 3-15

4. SETTING AND PROCEDURE BEFORE OPERATION 4-1 to 4-12

4.1 Procedure before Operation .............................................................................................................................4- 1

4.2 Handling Precautions........................................................................................................................................ 4- 2

4.3 Part Identification and Setting ........................................................................................................................... 4- 3

4.4 Error Compensation by the Offset Value/Gain Value Setting ........................................................................... 4- 5

4.4.1 Initial settings for error compensation.................................................................................................... 4- 7

4.4.2 Error compensation procedure .............................................................................................................. 4- 8

4.5 Station Number Setting..................................................................................................................................... 4- 9

4.6 Orientation of Module Installation .....................................................................................................................4- 9

4.7 Wiring................................................................................................................................................................ 4-10

4.7.1 Wiring example with CC-Link modules .................................................................................................. 4-10

4.7.2 Precautions when wiring to a platinum temperature-measuring resistor ............................................... 4-11

4.7.3 Connecting AJ65BT-64RD3 and platinum temperature-measuring resistor.......................................... 4-11

4.7.4 Connecting AJ65BT-64RD and platinum temperature-measuring resistor............................................ 4-12

5. PROGRAMMING 5-1 to 5-17

5.1 Programming Procedure................................................................................................................................... 5- 1

5.2 Program Example Conditions ........................................................................................................................... 5- 2

5.3 Program Examples when QCPU (Q Mode) Is Used ......................................................................................... 5- 5

5.4 Program Examples when QnACPU Is Used ..................................................................................................... 5-11

5.5 Program Example when ACPU/QCPU (A Mode) Is Used (Dedicated Instructions).......................................... 5-13

5.6 Program Example when ACPU/QCPU (A Mode) Is Used (FROM/TO Instructions).......................................... 5-16

6. TROUBLESHOOTING 6-1 to 6-5

6.1 Cause of Errors and Corrective Actions by LED Indication...............................................................................6- 1

6.2 When Wire Breakage Detection Flag is On ...................................................................................................... 6- 3

6.3 When E2PROM Error Flag is On....................................................................................................................... 6- 3

6.4 When Detected Temperature Value cannot be Read ....................................................................................... 6- 3

6.5 When Detected Temperature Value is Abnormal .............................................................................................6- 3

6.6 When There is a Communication Error between Master Station and AJ65BT-64RD....................................... 6- 4

APPENDIX A-1 to A-2

Appendix 1 Standard Thermal Electromotive Force of Platinum Temperature-Measuring Resistor .....................A- 1

Appendix 1.1 New JIS⋅IEC type (Pt100)....................................................................................................... A- 1

Appendix 1.2 Old JIS type (JPt100).............................................................................................................. A- 1

Appendix 2 External Dimensions Diagram ............................................................................................................A- 2

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

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. (Sold separately)

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. (Sold separately)

CC-Link System Master/Local Module User's Manual

Describes the system configuration, performance specifications, functions, handling, wiring and

troubleshooting of the QJ61BT11N. (Sold separately)

Programming Manual type AnSHCPU/AnACPU/AnUCPU/QCPU-A (A Mode) (Dedicated
Instructions)

Explains the instructions extended for the AnSHCPU/AnACPU/AnUCPU/QCPU-A (A Mode).

(Sold separately)

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. (Sold separately)

Compliance with the EMC and Low Voltage Directives

Manual Number

(Model Code)

IB-66721

(13J872)

IB-66722

(13J873)

SH-080394E

(13JR64)

IB-66251

(13J742)

SH-080895ENG

(13JZ41)

(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.

About Generic Terms and Abbreviations

Unless otherwise specified, this manual uses the following generic terms and abbreviations to

explain the AJ65BT-64RD3/AJ65BT-64RD4 platinum temperature-measuring resistor Pt100

temperature input module.

Generic Term/

Abbreviation

GX Developer

GX Works2

ACPU Generic term for A0J2CPU, A0J2HCPU, A1CPU, A2CPU, A2CPU-S1, A3CPU, A1SCPU, A1SCPUC24-R2,

QnACPU Generic term for Q2ACPU, Q2ACPU-S1, Q2ASCPU, Q2ASCPU-S1, Q2ASHCPU, Q2ASHCPU-S1, Q3ACPU,

QCPU (A mode) Generic term for Q02CPU-A, Q02HCPU-A and Q06HCPU-A.

QCPU (Q mode) Generic term for Q00JCPU, Q00CPU, Q01CPU, Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU,

LCPU Generic term for L02CPU, L26CPU-BT.

Master station Station that controls a data link system.

Local station Station that has a programmable controller CPU and can communicate with the master station and other local

Remote I/O station Station that handles only bit unit information. (Input/output from/to external device)

Remote device station Station that handles bit unit information and word unit information. (Input/output from/to external device, analog

Remote station Generic term for remote I/O station and remote device station. Controlled by the master station.

Intelligent device station Station that can perform transient transmission, e.g. AJ65BT-R2. (Local station included)

Master module Generic term for modules that can be used as the master station.

SB Link special relay (for CC-Link)

SW Link special register (for CC-Link)

RX Remote input (for CC-Link)

RY Remote output (for CC-Link)

RWw Remote register (write area for CC-Link)

RWr Remote register (read area for CC-Link)

Product name of the software package for the MELSEC programmable controllers.

A1SHCPU, A1SJCPU, A1SJCPU-S3, A1SJHCPU, A1NCPU, A2NCPU, A2NCPU-S1, A3NCPU, A3MCPU,
A3HCPU, A2SCPU, A2SHCPU, A2ACPU, A2ACPU-S1, A3ACPU, A2UCPU, A2UCPU-S1, A2USCPU,
A2USCPU-S1, A2USHCPU-S1, A3UCPU and A4UCPU.

Q4APU and Q4ARCPU.

Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU, Q12PRHCPU, Q25PRHCPU,
Q00UJCPU,Q00UCPU,Q01UCPU,Q02UCPU, Q03UDCPU, Q04UDHCPU, Q06UDHCPU,
Q10UDHCPU,Q13UDHCPU, Q20UDHCPU,Q26UDHCPU, Q03UDECPU, Q04UDEHCPU, Q06UDEHCPU,
Q10UDEHCPU, Q13UDEHCPU, Q20UDEHCPU, Q26UDEHCPU,Q50UDEHCPU and Q100UDEHCPU.

One station is required for one system.

stations.

(AJ65BTB1-16D, AJ65SBTB1-16D, etc.)

data conversion)

Bit unit information that indicates the module operation status or data link status of the master station/local
station. Represented as SB for convenience.

16-bit unit information that indicates the module operation status or data link status of the master station/local
station. Represented as SW for convenience.

Information input from a remote station to the master station in bit unit. Represented as RX for convenience.

Information output from the master station to a remote station in bit unit. Represented as RY for convenience.

Information output from the master station to a remote device station in 16-bit unit. Represented as RWw for
convenience.

Information input from a remote device station to the master station in 16-bit unit. Represented as RWr for
convenience.

Description

Packing List

This product consists of the following items.

Product name Quantity

AJ65BT-64RD3 platinum temperature-measuring resistor Pt100 temperature input module 1

AJ65BT-64RD4 platinum temperature-measuring resistor Pt100 temperature input module

AJ65BT-64RD3/AJ65BT-64RD4 platinum temperature-measuring resistor Pt100 temperature input module
user's manual (hardware)

1

MEMO

1. OVERVIEW MELSEC-A

1. OVERVIEW

This user's manual explains the specifications, part identification and wiring for the products listed
below, which are used as remote device stations for the CC-Link system:

The AJ65BT-64RD3 is a 3-wire system connecting module for the platinum temperature-measuring
resistor.
The AJ65BT-64RD4 is a 4-wire system connecting module for the platinum temperature-measuring
resistor.
(Hereinafter, the AJ65BT-64RD3 and AJ65BT-64RD4 will be collectively referred to as AJ65BT-64RD.)

The AJ65BT-64RD converts temperature data input from platinum temperature-measuring resistor Pt
100 (abbreviated as Pt 100 from here on) or platinum temperature-measuring resistor JPt 100
(abbreviated as JPt 100 from here on) to 16-bit signed BIN data (up to the first decimal place), or 32­bit signed BIN data (up to the third decimal place).

1.1 Features

The following describes the features of AJ65BT-64RD.

(1) Stores temperature data

By directly connecting the old JIS or new JIS IEC type platinum temperature-measuring resistor
to AJ65BT-64RD, temperature data [°C] may be received as digital values.
For the detected temperature, values to the first place and third place below decimal point are
stored in the remote register.

(2) Conversion is possible at four channels per module.

Conversion of temperatures into digital values can be carried out at four channels in a single
AJ65BT-64RD module.
Also, the conversion enable/disable can be specified for individual channels.

(3) Designation of sampling processing and travel average processing

As a conversion method, either sampling processing or travel averaging processing can be
selected for each channel.

(4) Wire breakage detection is possible at individual channels.

The wire breakage of platinum temperature-measuring resistor or cable can be detected for each
channel.

(5) High overall accuracy

High-accuracy temperature detection is feasible with a tolerance of ±0.25 % of the full scale in
overall accuracy for normal temperature detection, and ±0.1 % of the full scale when the ambient
temperature is in the normal temperature range (25 °C ±5 °C).

1-1

2. SYSTEM CONFIGURATION MELSEC-A

2. SYSTEM CONFIGURATION

System configuration when using the AJ65BT-64RD is explained below.

2.1 Overall Configuration

The overall configuration when using the AJ65BT-64RD is shown below.

2-1

2. SYSTEM CONFIGURATION MELSEC-A

2.2 Applicable Systems

This section explains applicable systems.

(1) Applicable master modules

For available master modules, visit the CC-Link Partner Association (CLPA) website at:
http://www.cc-link.org/

REMARK

Check the specifications of the master module before use.

POINT

When using the AJ61BT11, A1SJ61BT11, AJ61QBT11 or A1SJ61QBT11, use the one where the
following number (9707 B or later) is indicated in the DATE column of the rating plate.

The module where "9707 B" is not indicated in the DATE column cannot be used.

<Large type>

<Small type>

MITSUBISHI

PROGRAMMABLE CONTROLLER

DATE 9707 B

MITSUBISHI ELECTRIC CORP ORATION JAPAN

Date of
manufacture

Function
version

BD992D008H40

CPU UNIT

MODEL

DATE

9707 B

MITSUBISHI ELECTRIC BD992D008H40

Date of
manufacture

Function
version

(2) Restrictions on use of CC-Link dedicated instructions (RLPA, RRPA)

The CC-Link dedicated instructions (RLPA, RRPA) may be inapplicable depending on the used
programmable controller CPU and master module.
For details of the restrictions, refer to the A series master module user's manual (details) or
AnSHCPU/AnACPU/AnUCPU/QCPU-A (A mode) programming manual (dedicated instructions).
The AJ65BT-64RD accepts only the dedicated instructions RLPA and RRPA.
Refer to Section 5.5 for a program example that uses the dedicated instructions (RLPA, RRPA).

2-2

3. SPECIFICATIONS MELSEC-A

3. SPECIFICATIONS

This section explains the AJ65BT-64RD the general specifications, performance specifications, and
transmission specifications.

3.1 General Specification

This section explains the AJ65BT-64RD general specifications.

Table 3.1 General Specification

Item Specifications

Ambient operating
temperature

Ambient storage temperature -20 to 75 °C

Ambient operating humidity 10 to 90 %RH, Non-condensing

Ambient storage humidity 10 to 90 %RH, Non-condensing

Frequency Acceleration Amplitude No. of sweeps

Vibration resistance 9 to 150 Hz 9.8 m/s2 —

9 to 150 Hz 4.9 m/s2 —

Shock resistance Conforming to JIS B 3502, IEC 61131-2

Operating ambience No corrosive gases

Operating elevation *3 2000 m (6562 ft.) max.

Installation location Control panel

Over voltage category *1 II max.

Pollution level *2 2 max.

Conforming to
JIS B 3502,
IEC 61131-2

For intermittent
vibration

For continuous
vibration

(147 m/s

5 to 9 Hz

5 to 9 Hz

2

, 3 times in each of 3 directions X Y Z)

*1 : This indicates the section of the power supply to which the equipment is assumed to be

connected between the public electrical power distribution network and the machinery within the
premises. Category II applies to equipment for which electrical power is supplied from fixed
facilities. The surge voltage withstand level for up to the rated voltage of 300 V is 2500 V.

*2 : This index indicates the degree to which conductive material is generated in terms of the

environment in which the equipment is used. Pollution level 2 is when only non-conductive
pollution occurs. A temporary conductivity caused by condensation must be expected
occasionally.

*3 : 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.

0 to 55

°C

—

—

3.5mm

(0.14inches)

1.75mm

(0.069inches)

10 times in each

direction X, Y, Z

—

3-1

3. SPECIFICATIONS MELSEC-A

3.2 Performance Specification

The performance specification of the AJ65BT-64RD is explained below.

Item AJ65BT-64RD3 AJ65BT-64RD4

Measurement method 3-wire 4-wire

Connectable platinum temperature­measuring resistor

Output current for detecting temperature

Temperature input range –180 to 600 °C

Temperature detection

value

Overall

accuracy Operating ambient

Resolution 0.025 °C

Conversion speed (Sampling time) 40 ms/channel *1

Temperature input point 4-channel/module

CC-Link station type Remote device station

Occupied points

Connection cable

Noise durability Noise voltage 500 Vp-p, Noise width 1 μs by noise simulator of the noise frequency 25 to 60 Hz

Dielectric withstand voltage

Insulation method

Insulation resistor

Connection terminal block 27-point terminal block (M3.5 × 7 screws)

Supported cable size 0.75 to 2.00 mm2

Supported solderless terminal RAV 1.25-3.5, RAV 2-3.5 (Conform to JIS C 2805)

Module installation screw

Applicable DIN rail

Operating ambient
temperature
(25 ± 5 °C)

temperature (less than
20 °C, more than 30
°C)

Between batch of power supply system and ground
Between batch of power supply system and batch of communication system
Between batch of communication system and batch of temperature input
Between batch of temperature input and ground
500V AC 1 minute

Between the platinum temperature-measuring
resistor input and CC-Link transmission: Photocoupler insulation

Between the platinum temperature-measuring
resistor input and channel: no insulation

Between batch of power supply system and ground
Between batch of power supply system and batch of communication system
Between batch of communication system and batch of temperature input
Between batch of temperature input and ground
500 V DC, 10M

16-bit signed binary : –1800 to 6000

(value to one decimal place × 10)

32-bit signed binary : –180000 to 600000

(value to three decimal places × 1000)

± 0.1 % (accuracy for maximum value)

± 0.25 % (accuracy for maximum value)

4-station : RX/RY 128 points each

RWw/RWr 16 points each

Ω or more on the insulation resistance tester

M4 × 0.7 mm (0.03 in.) × 16 mm (0.63 in.) or more

Installation in the rail is possible, too.

TH 35-7.5 Fe, TH 35-7.5 Al, TH 35-15 Fe

Pt 100, JPt 100

1 mA

CC-Link dedicated cable

(conform to JIS C 2812)

3-2

3. SPECIFICATIONS MELSEC-A

g

Performance specification (continued)

Item AJ65BT-64RD3 AJ65BT-64RD4

External power supply 24 V DC (18 to 30 V DC)

Internal consumed current 0.17 A (at 24VDC)

Allowable momentary power failure
period

Weight 0.38 (0.84) kg (lb.)

*1 : Conversion speed is the time until it is converted to the corresponding digital value after the

temperature has been input, and then stored in the remote register.
When the multiple channels are used, the conversion speed is “40 ms × number of the
conversion enable channels”

3.2.1 Specifications when connecting to a platinum temperature-measuring resistor

The following explains the specifications when connecting the AJ65BT-64RD and a platinum
temperature-measuring resistor.

(1) • The effect on the measured resistance by the discrepancy in the lead resistance value

connected to A, b is approximately

0.025 °C/10 m Ω.

• The lead resistance value between platinum temperature-measuring resistor and AJ65BT­64RD3 should be 100 Ω or less per line.

1ms

AJ 65BT-64RD3

100 Ω or less per line

A

Plat in um t emperatu re­measurin

resistor

B

b

SLD

(2) The lead resistance value between between platinum temperature-measuring resistor and

AJ65BT-64RD4 should be 100 Ω or less per line.

AJ 65BT-64RD4

100 Ω or less per line

a

A

Platinum temp eratu re­measuring resistor

B

b

SLD

3-3

3. SPECIFICATIONS MELSEC-A

3.2.2 Data link processing time

For the AJ65BT-64RD, the data link processing time shown below will be required in order to execute
each function.
For details of the link scan time, refer to the user's manual (details) of the used mater module.
Example) Data link processing time in asynchronous mode when the master module is the QJ61BT11

(normal value)

(1) Mater station (RY) → Remote device station (RY) processing time

[Expression]
SM + LS × 1 + Remote device station processing time [ms]
SM : Master station sequence program scan time
LS : Link scan time
Remote device station processing time: 1ms

(2) Master station (RX) ← Remote Device Station (RX) Processing Time

[Expression]
SM + LS × 1 + Remote device station processing time [ms]
SM : Master station sequence program scan time
LS : Link scan time
Remote device station processing time: (Number of used channels +1*) ×40ms
*: Internal processing time of AJ65BT-64RD

(3) Master station (RWr) ← Remote Device Station (RWr) Processing Time

[Expression]
SM + LS × 1 + Remote device station processing time [ms]
SM : Master station sequence program scan time
LS : Link scan time
Remote device station processing time: (Number of used channels +1*) ×40ms
*: Internal processing time of AJ65BT-64RD

POINT

The above are examples of processing time until the control of the output signal to the AJ65BT­64RD from the programmable controller CPU or until input signals or remote registers are read.

The maximum time that takes for updating the detected temperature read by the programmable
controller CPU is “data link processing time + sampling time.”

3-4

3. SPECIFICATIONS MELSEC-A

3.3 Function

The function of AJ65BT-64RD is explained below.

3.3.1 Function list

Below is a function list of the AJ65BT-64RD.

Item Description Reference section

Conversion enable/disable
designation

Sampling processing/travel
average processing designation

Wire breakage detection

Detected temperature storage

Designation of platinum
temperature-measuring resistor
type

• Performs conversion enable/disable settings by channel.
(Default ······ All channels disabled)

• Sampling time may be reduced by disabling the conversion
at channels not in use.

• Designates sampling processing or travel average
processing by channel.
(Default ······ All channels sampling processing)

• Detects wire breakage for the connected thermocouple by
channel.

• A value to one decimal place (16-bit signed binary) will be
stored in the remote register.

• Designates the type of platinum temperature-measuring
resistor to be used.
Usable platinum temperature-measuring resistors are the
following two types:

.....

• Pt100

(Conforms to JIS C 1604-1997, IEC 751-1983)

• JPt100

(Conforms to JIS C 1604-1981)

New JIS, IEC type

...

Old JIS type

Section 3.3.2

Section 3.3.3

Section 3.3.4

Section 3.3.5

Section 3.3.6

3-5

3. SPECIFICATIONS MELSEC-A

3.3.2 Conversion enable/disable designation

Conversion may be enabled or disabled for each channel individually.
The setting of the conversion is made through the CH.

Setting Description

ON Wire breakage detection is conducted at the same time the temperature of the target object is taken.

OFF Neither temperature detection nor wire breakage detection is conducted.

AJ65BT-64RD

Remote I/O sig nal Remo te r egi st er

Enables conversion

ONRYn0

for CH. 1

RYn1

RYn2

RYn3

to

Enables conversion

ON

for CH. 2
Disable conversion

OFF

for CH. 3
Disable conversion

OFF

for CH. 4

 conversion enable flags (RYn0 to RYn3).

CH. 1 detect ed temperat ure

265RWrn

value (16-bit)

RWrn +1

RWrn +2

RWrn +3

RWrn +4

RWrn +5

RWrn +6

RWrn +7

to

103275

CH. 2 detect ed temperat ure

1033

value (16-b it)
CH. 3 detect ed temperat ure

0

value (16-b it)
CH. 4 detect ed temperat ure

0

value (16-b it)

CH. 1 detec ted temp eratur e

26525

value (32-bit)

CH. 2 detec ted temp eratur e
value (32-bit)

(1) Relationship between conversion enable/disable designation and sampling time

By disabling conversion at the channels not in use, sampling time may be reduced.
<If all channels are conversion enabled>

40 ms × 4 channels = 160 ms

(= sampling time)

<If only one channel is conversion enabled>

40 ms × 1 channel = 40 ms (= sampling time)

(2) Changes caused by switching conversion enable/disable designation

<When changed from conversion disabled → enabled>

Sampling of the enabled channels will be commenced.
After the detected temperature values are stored in the remote register, the conversion
completion flag is turned on for the corresponding channel.

<When changed from conversion enabled → disabled>

Sampling of the disabled channels will be stopped.
The conversion completion flag is turned off for the corresponding channel.
For the detected temperature value stored in the remote register, the data immediately prior to
the disable setting will be retained.

3-6

3. SPECIFICATIONS MELSEC-A

3.3.3 Sampling processing/travel average processing designation

The AJ65BT-64RD may designate sampling processing or travel average processing for each
individual channel.
The setting of sampling processing or travel average processing is made through the CH.
processing/travel average processing designation flags (RYn4 to RYn7).

Setting Description

ON Travel average processing

OFF Sampling processing

(1) Travel average processing

The average of the four detected temperature values that have been taken during each sampling
time (current value + three previous values) is calculated and stored in the remote register.
Also, since the average processing travels for each sampling, the most recent measured
temperature value may be obtained.
By using this, a scaling value can be obtained using the detected temperature value that has
undergone the average processing and stored in the remote register.

Sampling time

 sampling

e
r

u

t
a

r
e
p

m
e

[°C]

T

Time [ms]

The data transition inside the remote register

1st storage 2nd storage 3rd storage

+++

4

+++

4

1st storage

2nd storage

3rd storage

+++

4

Remote register

Detected
temperature
value

3-7

3. SPECIFICATIONS MELSEC-A

(2) Sampling processing

Stores the detected temperature value and scaling value are stored in the remote register by
each sampling time.

Sampling time

e
r

u

t
a

r
e
p

m
e
T

[°C]

1st storage

2nd storage

3rd storage

Time [ms]

The data transition inside the remote register

1st storage 2nd storage 3rd storage

Remote register

Detected
temperature
value

(3) Changes caused by altering sampling processing/travel average processing settings

<When changed from sampling processing → travel average processing>

The conversion completion flag is turned off for the corresponding channel.
After an average of four previously detected temperature values (three values from the present
and past value) is calculated and stored to the remote register, the conversion completion flag
for the corresponding channel is turned on.

<When changed from travel average processing → sampling processing>

The conversion completion flag is turned off for the corresponding channel.
After the most recent detected temperature value is stored in the remote register, the conversion
completion flag for the corresponding channel is turned on.

3-8

3. SPECIFICATIONS MELSEC-A

3.3.4 Wire breakage detection

The AJ65BT-64RD detects wire breakage in the platinum temperature-measuring resistor or cable
used for each channel, and turns on the wire breakage detection flag (RXn4 to RXn7) for the
corresponding channel.
On the AJ65BT-64RD, the wire breakage detection are performed for channels that are enabled for
conversion.
The relationships between the wire breakage detection and conversion enable/disable are shown
below.

Connection status Conversion enabled/disabled setting Wire breakage detection flag

No b reak age

Breakage

No connection

POINT

• Be sure to set the channels having no platinum temperature-measuring resistor attached to
“conversion disabled.”
If a channel having no platinum temperature-measuring resistor attached is set to “conversion
enabled,” the wire breakage detection flag will turn on.

• The channels for which wire breakage detection turned on will retain the detected temperature
value immediately prior to the breakage detection, and the conversion completion flag for the
corresponding channel will turn off.
When the detected breakage is fixed, updating of detected temperature value after repair will
be resumed and the conversion completion flag will be turned on again.

• For platinum temperature-measuring resistor wiring details, refer to Section 4.7.

Conversion enabled

OFF

Conversion disabled

Conversion enabled ON

Conversion disabled OFF

Conversion enabled ON

Conversion disabled OFF

3-9

3. SPECIFICATIONS MELSEC-A

3.3.5 Detected temperature

Temperatures in the range of -180 °C to +600 °C can be detected using the AJ65BT-64RD.
Of the temperature detected, the values to the first place and third place below decimal point are
stored in the remote register (Refer to Section 4.7).

(1) Value to the first place below decimal point

The value to the first place below the decimal point of the detected temperature is multiplied by
10, then stored as 16-bit signed binary data.
The data to be stored is in the range of – 1800 to + 6000.

Example: When the temperature detected at CH. 1 is 216.025 °C

216.0 25 °C 2160

To the 1st digit below Stored in the remote register, RWrn
decimal point (CH1 detected temperature (16-bit) storage area)
of AJ65BT-64RD.

(2) Value to the third place below decimal point

The value to the third place below decimal point of the detected temperature is multiplied by
1000, then stored as 32-bit signed binary data.
The data to be stored is in the range of -180000 to +600000.

Example: When the temperature detected at CH. is 216.025 °C

216.0 25 °C 216025

To the 3rd digit below Stored in the remote register, RWrn+4 and RWrn+5
decimal point (CH1 detected temperature (32-bit) storage area)
of AJ65BT-64RD.

10 times

1000 times

3.3.6 Designating the platinum temperature-measuring resistor type

The platinum temperature-measuring resistors listed below can be used for AJ65BT-64RD.

• Pt100

• JPt100

By setting the type of the platinum temperature-measuring resistor to be used using the platinum
temperature-measuring resistor designation pin, all channels are set to the designated type.

.............

...........

New JIS, IEC type (JIS C 1604-1997, IEC 751-1983)
Old JIS type (JIS C 1604-1981)

POINT

Two types of platinum temperature-measuring resistors cannot be used simultaneously.

When two types of platinum temperature-measuring resistors are used, the

channel which connects the resistor of a type different from designation cannot obtain a correct
detected temperature value.

3-10

3. SPECIFICATIONS MELSEC-A

3.4 I/O Signals in Respect to the Master Module

The assignment of remote I/O signals and the functions is explained.

3.4.1 Remote I/O signal list

The AJ65BT-64RD uses 128 points for input and 128 points for output in respect to the data for the
master module.
The remote I/O signal assignment and the name of each signal are shown in the table below.
Device RX indicates an input signal to the master module from the AJ65BT-64RD, and device RY
indicates an output signal from the master module to the AJ65BT-64RD.

Signal direction : AJ65BT-64RD → Master module Signal direction : Master module → AJ65BT-64RD

Device No. Signal name Device No. Signal name

RXn0 CH.1 conversion completion flag RYn0 CH.1 conversion enable flag

RXn1 CH.2 conversion completion flag RYn1 CH.2 conversion enable flag

RXn2 CH.3 conversion completion flag RYn2 CH.3 conversion enable flag

RXn3 CH.4 conversion completion flag RYn3 CH.4 conversion enable flag

RXn4

RXn5

RXn6

RXn7

RXn8 E2PROM abnormal flag RYn8

RXn9 Test mode flag

RXnA to Use prohibited

to

RY (n+7) 6

RX (n+7) 7 RY (n+7) 7 Offset/gain value selection flag

RX (n+7) 8 Initial data processing request flag RY (n+7) 8 Initial data processing completion flag

RX (n+7) 9 Initial data setting completion flag RY (n+7) 9 Initial data setting request flag

RX (n+7) A Error status flag RY (n+7) A Error reset request flag

RX (n+7) B Remote READY RY (n+7) B

RX (n+7) C

to ——

RX (n+7) F RY (n+7) F

CH.1 wire breakage detection flag

CH.2 wire breakage detection flag

CH.3 wire breakage detection flag

CH.4 wire breakage detection flag

——

n : Addresses assigned to the master module by the station number setting.

POINT

Do not turn on the remote output signals that are prohibited in respect to the remote device from
the master module.

If the prohibited signals are output, the programmable controller system may malfunction.

RYn4 CH.1 sampling processing/travel average

RYn5 CH.2 sampling processing/travel average

RYn6 CH.3 sampling processing/travel average

RYn7 CH.4 sampling processing/travel average

to

processing designation flag

processing designation flag

processing designation flag

processing designation flag

Use prohibited

3-11

3. SPECIFICATIONS MELSEC-A

3.4.2 I/O signal functions

The function of each remote I/O signal for the AJ65BT-64RD is explained below.

(1) Remote Input signal

Device No. Signal name Description

RXn0 to RXn3

RXn4 to RXn7

RXn8

RXn9 Test mode flag

RX (n+7) 8

RX (n+7) 9

RX (n+7) A

RX (n+7) B

CH.



conversion
completion flag

 wire

CH.
breakage
detection flag

2

PROM

E
abnormal flag

Initial data
processing
request flag

Initial data
processing
request flag

Error status
flag

Remote
READY

The conversion completion flag turns on when the detected temperature value at all
conversion enabled channel is stored in the remote register after power on or a
hardware reset.

If the travel average processing is running, it will turn on when the detected
temperature value is converted and stored in the remote register after the travel
average processing has completed. The conversion completion flag changes
according to the conditions listed below.

• When conversion disabled is changed to enabled
The temperature detection of the enabled channels will be commenced.
After the detected temperature values are stored in the remote register, the
conversion completion flag is turned on for the corresponding channel.

• When conversion enabled is changed to disabled
The conversion completion flag is turned off for the corresponding channel.
For the values stored in the remote register, the data immediately prior to the
disable setting are retained.

For the platinum temperature-measuring resistor input circuit for all channels, when
only a single section of the I/O signal lines including the platinum temperature­measuring resistor is broken, the wire breakage detection flag is turned on for the
corresponding channel.

The detected temperature value when a wire breakage detection flag is turned on will
be maintained at the value immediately prior to the wire breakage, and then the
conversion completion flag will be turned off.

After the wire breakage has been removed, the wire breakage detection flag may be
turned off by turning on the error reset request flag.

Also, after the breakage has been fixed, the updating of detected temperatures value
will be resumed regardless of whether or not the wire breakage detection flag is reset,
and after the first update has been completed the conversion completion flag will turn
on once again.

After power on or a hardware reset, the internal memory (E
storage) is checked, and it turns on if there is an error.

At such times, the conversion function will stop.

When this flag turns on, the error reset request flag may not be used to reset (off)
because the module itself is malfunctioning (hardware error).

Turns on during test mode.

Turns off when reverted to normal mode.

After power on or a hardware reset, this is turned on because the AJ65BT-64RD
requests the initial data setting .

After the initial data processing is complete (initial data processing request flag
RY(n+7)8 is turned on), it turns off.

Turns on when initial data was required to change (initial data setting request flag
RY(n+7)9 is turned on).

After the initial data setting request flag is turned off when initial data setting is
complete, this also turns off.

Turns on when wire breakage detection flag or E

After the cause of the error has been removed, the flag may be reset (off) by turning
on the error reset request flag, but since the E
flag may also not be reset.

After power on or a hardware reset, this flag turns on when the initial data setting is
complete and the detected temperature value at all conversion-enabled channel has
been stored in the remote register.

Will not turn on when all channels are conversion disabled.

It will turn off for two seconds when the offset/gain switch is set to [OFFSET] during
test mode or when changed from [GAIN] to [SET].

Used as an interlock for read in respect to the master module.

2

PROM error flag turns on.

2

PROM error flag cannot be reset, this

2

PROM for offset/gain value

3-12

3. SPECIFICATIONS MELSEC-A

(2) Remote output signal

Device No. Signal name Description

RYn0 to RYn3

RYn4 to RYn7

RY (n+7) 7

RY (n+7) 8

RY (n+7) 9

RY (n+7) A



CH.
conversion
enable flag



CH.
sampling
processing/

travel average
processing
specification
flag

Offset/gain
value selection
flag

Initial data
processing
completion flag

Initial data
setting request
flag

Error reset
request flag

It is possible to designate the conversion enabled or disabled for each channel.

By disabling the conversion at channels not in use, generation of unnecessary wire
breakage detection flags may be prevented and sampling time may be reduced.

ON : Conversion enabled
the temperature of the target object is taken.

OFF : Conversion disabled
is conducted.

By setting of conversion enable/disable, the following changes are made.

• When conversion is changed from disabled
Temperature detection of the enabled channel is commenced.
After the detected temperature value of the corresponding channel is stored in the
remote register, the conversion completion flag of the corresponding channel is
turned on.

• When the conversion is changed from enabled
The conversion completion flag is turned off for the corresponding channel.
For the detected temperature value stored in the remote register, the data
immediately prior to the disable setting will be retained.

It is possible to designate the sampling processing or travel average processing for
each independent channel.

ON : Travel average processing

OFF : Sampling processing

In travel average processing, an average value of four detected temperature value
samples that were taken during each sampling time is calculated and stored in the
remote register.

• When changed from sampling processing
The conversion completion flag for the corresponding channel is turned off.
An average value of four detected temperature value samples is calculated, and
after it has been stored to the remote register the conversion completion flag of the
corresponding channel is turned on.

• When changed from travel average processing
The conversion completion flag is turned off for the corresponding channel.
After the most recent detected temperature value is stored in the remote register,
the conversion completion flag for the corresponding channel is turned on.

Note : This flag is only valid when the initial data processing completion flag

(RY (n+7) 8) or initial data setting request flag (RY (n+7) 9) is on.

Select whether or not the offset/gain value will be set to “user setting” or “factory
setting.”

At the product shipment from factory, the same values for the factory settings are
stored in the E
ON : Factory setting (Offset-gain, 100.0

OFF : User setting

Note : This flag is only valid when the initial data processing compensation flag

After power on or hardware reset, the initial data are set in the module by turning this
flag on during the initial data processing request .

Used when designating sampling processing/travel average processing designation,
selecting offset/gain value.

Turned on when changing the initial values.

Used when designating sampling processing/travel average processing, selecting
offset/gain value.

When this flag is turned on, the wire breakage detection flag/write data error flag are
reset (turned off), and the error status flags are reset at the same time. However, the

2

PROM error flag may not be reset (turned off) and therefore the error status flag will

E
remain on.

2

PROM for storing the user setting offset/gain values.

(RY (n+7) 8) or initial data setting request flag (RY (n+7) 9) is on.

.....

wire breakage detection is conducted at the same time

....

neither temperature taking or wire breakage detection

→ enabled

→ disabled.

→ travel average processing

→ sampling processing

Ω (0 °C equivalent) -300 °C)

n : Address assigned to the master module by the station number setting.

3-13

3. SPECIFICATIONS MELSEC-A

3.5 Remote Register

The AJ65BT-64RD is equipped with remote registers for data communication with the master module.
The assignment and data structure of the remote register are explained below.

3.5.1 Remote register assignment

The remote register assignments are shown in the table below.

Communicati

on direction

Master

→

Remote

RWrn CH. 1 detected temperature value (16-bit)

RWrn +1 CH. 2 detected temperature value (16-bit)

RWrn +2 CH. 3 detected temperature value (16-bit)

RWrn +3 CH. 4 detected temperature value (16-bit)

RWrn +4

RWrn +5 Section

Remote RWrn +6 3.5.2

→ RWrn +7

Master RWrn +8

RWrn +9

RWrn +10

RWrn +11

RWrn +12

to Use prohibited — —

RWrn +15

Address Description Default value

RWwm

to

RWwm +15

Use prohibited

CH. 1 detected temperature value (32-bit)

CH. 2 detected temperature value (32-bit)

CH. 3 detected temperature value (32-bit)

CH. 4 detected temperature value (32-bit)

—

0

Reference

section

m,n : Address assigned to the master module by the station number setting

—

3-14

3. SPECIFICATIONS MELSEC-A

3.5.2 Remote register for storing detected temperature (Address : RWrn to RWrn+11)

AJ65BT-64RD has two types of remote registers, for 16-bit data and 32-bit data, to store the detected
temperature values that are converted into digital values.

(1) 16-bit data storage (Address : RWrn to RWrn+3)

The value to the first place below decimal point of the detected temperature is multiplied by 10,
then stored as 16-bit signed binary data.
If the detected temperature value is negative, stores the compliment of 2.
0 is stored at power on.

Example 1 : When the detected temperature is 123.025 °C (Stores 1230)

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

0 0 0 0 0 1 0 0 1 1 0 0 1 1 1 0

Example 2 : When the detected temperature is –123.025 °C (Stores –1230)

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

1 1 1 1 1 0 1 1 0 0 1 1 0 0 1 0

(2) 32-bit data storage (Address : RWrn+4 to RWrn+11)

The value to the first place below decimal point of the detected temperature is multiplied by 1000,
then stored as 32-bit signed binary data.
If the detected temperature value is negative, stores the compliment of 2.
0 is stored at power on.

Example 1 : When the detected temperature is 123.025 °C (Stores 123025)

b31 b24 b23 b16b15 b8 b7 b0

0 0 00 0 0 0 0 0000000111100000 1 0 0 1 0 00 1

tototo

Example 2 : When the detected temperature is –123.025 °C (Stores –123025)

b31 b24 b23 b16 b15 b8 b7 b0

1 1 11 1 1 1 1 1111111000011111 0 1 1 0 1 11 1

to

to tototo

3-15

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4. SETTING AND PROCEDURE BEFORE
OPERATION

The procedure before operation of AG65BT-64RD, part identification and setting, and the wiring
method are explained below.

4.1 Procedure before Operation

The procedure before operation of AJ65BT-64RD is explained below.

Start

Set the switches listed below on AJ65BT-64RD.

• Statio n number setting switch

• Transmission baud rate setting switch

Set the platinum temperature-measuring

resistor type designation pin.

Install the AJ65 BT-64RD.

Connect cables to the AJ65BT-64RD.

Programming

End

························· Refer to Section 4.3

························· Refer to Section 4.3

························· Refer to Section 4.2, 4.6

························· Refer to Section 4.7

························· Refer to Chapter 5

4-1

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.2 Handling Precautions

The handling precautions for AJ65BT-64RD is explained below.

CAUTION

(1) Tighten the module mounting screws and terminal block screws within the following ranges.

• 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.

• For protection of the switches, do not remove the cushioning material before
installation.

• Do not directly touch any conductive part of the module.
Doing so can cause malfunction or failure of the module.

• Tighten the screw within the specified torque range.
Undertightening can cause short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit,
or malfunction.

• Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.

• Do not touch any terminal while power is on.
Doing so may cause malfunction.

• Do not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.

• Do not drop or apply strong shock to the module.
Doing so may damage the module.

• Shut off the external power supply for the system in all phases before mounting or
removing the module to or from the panel.
Failure to do so may cause the module to fail or malfunction.

• When disposing of this product, treat it as an industrial waste.

Screw area Tightening torque range

Module mounting screws (M4 screw) 0.78 to 1.18 N • m

Terminal block terminal screws (M3.5 screw) 0.59 to 0.88 N • m

Terminal block installation screws (M4 screw) 0.98 to 1.37 N • m

(2) W hen using a DIN rail adapter, install the DIN rail considering the precautions described below.

(a) Applicable DIN rail types (conform to JIS C 2812)

TH35-7.5Fe
TH35-7.5Al
TH35-15Fe

(b) Space between DIN rail installation screws

When installing a DIN rail, tighten the screws with a space of less than 200 mm (7.9 in.).

4-2

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

)3)7)8)

4.3 Part Identification and Setting

The part identification and setting method for AJ65BT-64RD is explained below.

2) 1)

9)

MITSUBISHI

MELSEC

AJ65BT-64RD

SW MODE

NORMAL

0

TEST CH.

1-4

TEST

9

RUN

L RUN

L ERR.

PW

SD
RD

STATION NO.B RATE

X10 X1

0

0

1

1

•

•

•

•

•

•

MODE OFFSET UP

0

9

•

•

2

•

3

•

4

1

2
3

4• •

GAIN DOWN

8

2

7

3

456

SET

0

1

9

2
3

456

RESET

4

No. Name Description

Station setting
switch

STATION NO.

1)

0

•

•

•

Transmission
baud rate
setting switch

2)

10 1

1

8

2

7

3

456

B RATE

0

•

•

•

Sets the station number of AJ65BT-64RD in the range of 1 to 61.

“ × 10” sets the ten’s place for a station number.

“ × 1” sets the one’s place for a station number.

0

1

9

2
3

456

Sets the transmission speed of AJ65BT-64RD (for data link).

Setting No. Transmission baud rate

0 156 kbps (factory setting)

1 625 kbps

1

2
3

4• •

2 2.5 Mbps

3 5 Mbps

4 10 Mbps

Other than 0 to 4

Unused (if a number other than 0 to 4 is used, the "L ERR. " LED is lit and

communication error occurs.)

6)

5)

(Factory setting : 00)

Mode switch

3)

Offset/gain
setting switch

4)

MODE

0

9

•

•

•

•

OFFSET

GAIN

1

4

SET

0 NORMAL

2
3

1 to 4 TEST CH. At a test mode, select a channel to perform error compensation.

9 TEST When executing error compensation, select TEST to enter the test mode after 2 seconds.

During a normal operation, select this to end the test mode.
(Factory setting)

OFFSET Compensation mode of offset value

GAIN Compensation mode of gain value

SET

Store the detected temperature value when the position is switched from
OFFSET/GAIN to SET as an offset value/gain value, in the internal memory of AJ65BT­64RD.

4-3

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

No. Name Description

UP/DOWN
switch

5)

Reset switch

RESET

6)

LED for
operation
status display

7)

L RUN

L ERR.

Terminal block

8)

Platinum
temperature­measuring

9)
resistor type
designation pin

UP

DOWN

PW

RUN

SD

RD

Increase/decrease the offset value/gain value of the channel selected by the mode switch.

ON for less than 1.5 seconds : increase/decrease 0.025 °C at a time.

ON for more than 1.5 seconds : increase/decrease 0.1 °C per 0.04 second.

Hardware reset

Initialize the remote register of AJ65BT-64RD.

The initial data processing request flag turns on by turning the switch on.

PW

RUN

ON : Power is on

OFF : Power is off

Test mode

Normal

mode

ON : Normal operation

Flicker : Read data error occurred

OFF : 24 V DC power failure or WDT error

Flicker : Flickers when the offset/gain setting switch is set at OFFSET or GAIN

Flickers at 0.5-second intervals when the offset value or gain value being
used for compensation is within the setting range.
Flickers at 0.1-second intervals when the offset value or gain value being
used for compensation is out of the setting range (out of the temperature
input range or the gain value minus the offset value is smaller than +10°C).
In this case, the offset or gain value cannot be memorized.

OFF : Turns off when the offset/gain setting switch is positioned at SET

L RUN

ON : Normal communication

OFF : Communication disconnected (time over error)

SD The light comes on during data transmission

RD The light comes on during data receiving

ON : Communication data error (CRC error)

Station number, baud rate switch setting error

Flicker at regular intervals: Indicates that the station number or baud rate switch setting was

L ERR.

changed while power was on.

Flicker at irregular intervals: Indicates that the terminating resistor is not installed or the module or

CC-Link dedicated cable is affected by noise.

OFF: Normal communication

AJ65BT-64RD3

13579111315171921232527

DA D G

+24V 24G b4A4SLDb3A3b2A2SLDb1A1

2468101214161820222426

DB SLD (FG)

B4NCSLDB3NCB2NCSLDB1NC

AJ65BT-64RD4

13579111315171921232527

DA D G

+24V 24G b4A4SLDb3A3b2A2SLDb1A1

2468101214161820222426

DB SLD (FG)

B4a4SLDB3a3B2a2SLDB1a1

Designates the type of platinum temperature-measuring resistor to be connected to AJ65BT-64RD using a short pin as
either Pt100 (JIS, IEC type) or JPt100 (old JIS type).

(Factory setting is Pt100.)

When connecting Pt100

Circuit board

When connecting JPt100

Circuit board

4-4

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.4 Error Compensation by the Offset Value/Gain Value Setting

The AJ65BT-64RD error compensation is a function that compensates values at arbitrary 2 points
(offset value/gain value) within the usage temperature range at system startup or when a correct
temperature cannot be detected.
The error compensation is executed by reading the detected temperature value in the remote register
using a sequence program and monitoring the values using a peripheral device.

SW MODE

NORMAL

0

TEST CH.

1-4

TEST

9

RUN

L RUN

L ERR.

PW

SD

RD

STATION NO.B RATE

10 1

0

9

1

•01

•

•

•

MODE OFFSET UP

9

•

•

2
3

4••

0

1

2
3

4••

8

2

•
7

3

•

456

SET

GAIN DOWN

0

1

2
3

456

RESET

UP/DOWN adju stm ent of OFFSET/GAIN

OFFSET GAIN
Lower value of the two
points to be compensated

<

Higher value of the two
points to be compensated
(of fs et v alu e mo re than +10C°)

The following shows the characteristic of detected temperature value with respect to the input
temperature.

GAIN

80 [°C]0

Compensate the detected
temperature value to equal
the input temperature.

d
e

t
c
e

t
e
D

-50 [°C]

80 [°C]

79.7

e
u

l
a
v

e
r

u

t
a

r
e
p

m
e

t

Characteristics before
error compensation
Characteristics after
error compensation

Input temperature

Compensate the detected
temperature value to equal
the input temperature.

-49.7

-50 [°C]

OFFSET

• The error compensation can also be done by using a standard resistor instead of inputting
temperature directly to the platinum temperature-measuring resistor.

Standard resistive value of the platinum temperature­Resistive value of standard resistor = measuring resistor against the input temperature to be the
offset value/gain value (Refer to Appendix 1).

4-5

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

POINT

• The offset value/gain value can be obtained with a high accuracy when error compensation is
carried out at the minimum and maximum temperatures in the range used.

• Set the offset value/gain value while monitoring the detected temperature value, using a
peripheral device.

• Always set the offset and gain values within the allowable temperature input range so that the
gain value minus offset value is greater than or equal to 10 °C.
If the offset value or gain value being used for compensation is out of the setting range, the
RUN LED fickers at a high speed (at 0.1 second intervals) and the offset or gain value will not
be stored even when the offset/gain setting switch is swiched to SET.

• The offset value and gain value are stored inside AJ65BT-64RD and are not erased even at
power off.

4-6

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.4.1 Initial settings for error compensation

The following shows the initial settings using a program designed for executing error compensation.

Star t

Create a prog ram th at designates a s amp li ng
processing and travel average processing *1

Create a prog ram th at reads the detec ted
temper atu re v alu es

End

*1 Only when executing error compensation with the value detected by travel average processing.

POINT

• Perform the initial settings for error compensation prior to entering the test mode (at normal
mode).

• During the test mode, disable the designation of the conversion enable/disable specification
flag, and enable conversion for the automatically selected channels and disable for the
unselected channels.

4-7

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.4.2 Error compensation procedure

The following shows the flow of error compensation.

Start

Set the mode switch to 9 for test mode.
Check that RUN LED is turned OFF.

RUN

Turns off

after 2
seconds

B

Select the channel to compensate using the mode
switch.

Input a value to be the offset value.

Set the offset/gain setting switch at OFFSET.

MODE

9

•

•

AJ65BT-64RD

0

1

2
3

4••

Pt100

RUN

Flickers at

0.5 second
intervals

MODE

9

•

•

Turn the knob
to the channel
to be set.

Or, input standard
resistive value
using a standard
resistor, etc.

-50 °C

OFFSET

GAIN

0

1

2
3

4••

SET

A

Input a value to be the gain value.

AJ65BT-64RD

Or, input standard
resistive value

80 °C

797

using a standard
resistor, etc.

OFFSET

SET

GAIN

800

UP

Pt100

Set the offset/gain setting switch at GAIN.

RUN

Flickers at

0.5 second
intervals

Adjust the detected temperature value to the gain
value using the UP/DOWN switch.

AJ65BT-64RD

DOWN

Set the offset/gain setting switch at SET to memorise
the gain value.

RUN

Off

OFFSET

SET

GAIN

Adjust the detected temperature value to the offset
value using the UP/DOWN switch.

AJ65BT-64RD

-497

500

UP

DOWN

Set the offset/gain setting switch at SET to memorise
the offset value.

RUN

Off

OFFSET

SET

GAIN

A

NO

B

Set the mode switch to 0 and return to the normal

mode.

Is compensation completed

for the channel used?

RUN

Turns on
after 2
seconds

End

YES

MODE

0

9

•

•

1

2
3

4••

POINT

Once an offset value or gain value is set in the test mode, the set value cannot be confirmed (the
set value is retained in the internal memory.)

4-8

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.5 Station Number Setting

The buffer memory addresses of the master module, where the remote I/O signals and read/write data
are stored, are determined by the station number setting of the AJ65BT-64RD.
For details, refer to the user's manual (details) of the used master module.

4.6 Orientation of Module Installation

The following shows the possible orientation for AJ65BT-64RD installation.

Panel

When installing alongside the panel When installing on the panel

4-9

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.7 Wiring

4.7.1 Wiring example with CC-Link modules

The following shows the connection between the AJ65BT-64RD and master module using CC-Link
dedicated cable.

POINT

For the modules at both ends of the data link, make sure to connect the “terminal resistor” that is
attached to a master module (connect between DA and DB).

4-10

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.7.2 Precautions when wiring to a platinum temperature-measuring resistor

To obtain maximum performance from the functions of AJ65BT-64RD and improve the system
reliability, a wiring with high durability against noise is required. The following describes the external
wiring precautions.
(1) Use separate cables for the AC and the external input signals of the AJ65BT-64RD, in order not

to be affected by the AC side surge or conductivity.

(2) Always place a platinum temperature-measuring resistor at least 10 cm (3.9 in.) apart from the

main circuit line and AC control circuit line. Place a platinum temperature-measuring resistor
sufficiently apart from circuits with high frequency, such as high-voltage lines and inverter load
main circuits. If they are placed close to each other, the platinum temperature-measuring
resistor is influenced more easily by the noise, surge, or conductivity.

4.7.3 Connecting AJ65BT-64RD3 and platinum temperature-measuring resistor

(1) The highest accuracy can be obtained if a 3-wire type platinum temperature-measuring resistor is

used for AJ65BT-64RD3.
The following shows a connection example of a 3-wire type platinum temperature-measuring
resistor.

*1 May be better to connect depending on the operating environment.

(2) A 4-wire type or 2-wire type platinum temperature-measuring resistor can also be used for

AJ65BT-64RD3.
Connect as shown in the diagrams below when using a 4-wire type or 2-wire type platinum
temperature-measuring resistor.

4-wire type

A

B

b

SLD

2-wire type

A

B

b

SLD

4-11

4. SETTING AND PROCEDURE BEFORE OPERATION MELSEC-A

4.7.4 Connecting AJ65BT-64RD and platinum temperature-measuring resistor

(1) The highest accuracy can be obtained if a 4-wire type platinum temperature-measuring resistor is

used for AJ65BT-64RD4.
The following shows a connection example of a 4-wire type platinum temperature-measuring
resistor.

*1 May be better to connect depending on the operating environment.

(2) A 4-wire type or 3-wire type platinum temperature-measuring resistor can also be used for

AJ65BT-64RD4.
Connect as shown in the diagrams below when using a 3-wire type or 2-wire type platinum
temperature-measuring resistor.

3-wire type

a

A

B

b

SLD

2-wire type

a

A

B

b

SLD

4-12

5. PROGRAMMING MELSEC-A

5. PROGRAMMING

The programming procedure, basic programming for read and write, as well as programming
examples are explained below.
When utilizing the program examples introduced in this chapter for an actual system, fully verify that
controllability in the target system has no problems.
Refer to the user's manual (details) of the used master module for the master module, to Section 3.5
for the remote registers, and to the AnSHCPU/AnACPU/AnUCPU/QCPU-A (A mode) programming
manual (dedicated Instructions) for details of the dedicated instructions.

5.1 Programming Procedure

Create a program that operates the AJ65BT-64RD connected to the master module in the following
procedure:

Start

Select factory setting or user setting for offset/gain values

Initial setting *1

Designate sampling processing/travel average processing

Designate the temperature conversion enable or disable

Read detected temperature value

Processing during error status

• Wire breakage detection

2

• E PROM error

End

*2

*2

*2

*1 When the QCPU (Q mode) is used, initial setting can be made by the remote device station

initialization procedure registration function. When the ACPU, QCPU (A mode) or QnACPU is
used, use a sequence program to make the setting.

*2 Setting cannot be made by the remote device station initialization procedure registration function.

Use a sequence program to make the setting.

5-1

5. PROGRAMMING MELSEC-A

5.2 Program Example Conditions

The program examples given in this chapter have been created under the following conditions.

(1) System configuration

5-2

5. PROGRAMMING MELSEC-A

(2) Relationships between programmable controller CPU, master module and AJ65BT-64RD

POINT

Depending on the used CPU module, the devices used in the program examples of this chapter
may not be applicable. For the device setting ranges, refer to the user's manual of the used CPU
module.

For example, when the A1SCPU is used, devices X100, Y100 and later are not applicable. Use
devices such as B and M.

5-3

5. PROGRAMMING MELSEC-A

(3) Initial setting

Setting item Description

CH. 1 sampling processing/travel average
processing designation flag (RY04)
CH. 2 sampling processing/travel average
processing designation flag (RY05)
Offset/gain value selection flag (RY77) Factory setting

(4) Other settings

Setting item Description

CH. 1 conversion enable flag (RY00) Conversion enable
CH. 2 conversion enable flag (RY01) Conversion enable

Travel average processing

Travel average processing

5-4

5. PROGRAMMING MELSEC-A

5.3 Program Examples when QCPU (Q Mode) Is Used

The network parameters and auto refresh parameters have been set by GX Developer.
Initial setting can be made easily by using the remote device station initialization procedure
registration function.

(1) Parameter setting

(a) Network parameter setting

(b) Auto refresh parameter setting

5-5

5. PROGRAMMING MELSEC-A

(2) Initial setting by remote device station initialization procedure registration function

(a) Target station number setting

Set the target station number of initial setting.
Set the target station number to "1".

(b) Procedure registration setting

The initial setting is registered to the AJ65BT-64RD when the initial data processing request
flag (RX78) turns ON and Remote device station initialization procedure registration (SB0D) is
set.
The following table indicates the setting results of the initial setting.

Procedure execution condition Execution

CH. 1 sampling processing/travel average processing

designation flag is set to the travel average processing.
(RY04: ON)

Initial data processing request flag (RX78) turns ON

Offset/gain value selection flag is set to the factory setting.

Initial data processing completion flag (RY78) is turned ON.
Initial data setting request flag (RY79) is turned ON.
Initial data processing request flag (RX78) turns OFF Initial data processing completion flag (RY78) is turned OFF.
Initial data setting completion flag (RX79) turns ON Initial data setting request flag (RY79) is turned OFF.

POINT

(1) When the remote device station initialization procedure registration command (SB000D) is

turned OFF after initial processing, all the RY signals that turned ON in the initial procedure
registration turn OFF. Hence, turn ON the "CH.  conversion enable flag" in a sequence
program.

(2) When the initial setting (CH.

flag, offset/gain selection flag) is changed, the remote device station initialization procedure
registration function cannot be used.
Use a sequence program to change the initial setting.

(c) Setting result

The setting result is shown below.

CH. 2 sampling processing/travel average processing
designation flag is set to the travel average processing.
(RY05: ON)

(RY77: ON)

 sampling processing/travel average processing designation

5-6

5. PROGRAMMING MELSEC-A

(3) Program example

5-7

5. PROGRAMMING MELSEC-A

*1: When making remote device station initialization procedure registration to multiple stations, correct

the program within the dotted line 1) as shown below.

[System configuration]

[Corrected program]

• RX(m+7)9 and RX(n+7)9 are initial data setting completion flags.

• RX(m+7)8 and RX(n+7)8 are initial data processing request flags.
Insert the remote READY and initial data processing request flags for all the stations, to which
the remote device station initialization procedure registration has been made, into the
program.

5-8

5. PROGRAMMING MELSEC-A

[Usage in combination with other remote device stations]
(1) Depending on the remote device stations to be used, the program enclosed by the dotted line 1)

has two programming patterns as shown in the above and the below figures.
(To check which pattern can be used, refer to the manual for the remote device to be used.)

[System configuration]

Master station

[Corrected program]

• RX(p+1)B and RX(q+1)B are remote READY.

• RX(p+1)8 and RX(q+1)8 are initial data processing request flags.

Remote device

station3

RX(p+1)B
RX(p+1)8

Remote device

station4

RX(q+1)B

RX(q+1)8

5-9

5. PROGRAMMING MELSEC-A

(2) W hen using the program enclosed by the dotted line 1) in combination with other remote device

stations, correct the program as shown below.

[System configuration]

[Corrected program]

Note that the master module can register the initialization procedure of only the specified
station out of the multiple remote device stations.
The master module supporting this function is the QJ61BT11N which serial No's first 5 digits is
08032 or later.
Fro details, refer to the CC-Link System Master/Local Module User's Manual, "CHAPTER 4
FUNCTIONS"

*2: Before the communication program is executed with remote device stations, the program enclosed

by the dotted line 1) enables the initial setting by using the SB0D (remote device station
initialization procedure registration instruction) and SB5F (completion status of remote device
station initialization procedure). Initialization processing can't be made only by the parameter
setting of GX Developer.

*3: The program enclosed by the dotted line 2) is necessary only when the initial settings are changed.

5-10

5. PROGRAMMING MELSEC-A

5.4 Program Examples when QnACPU Is Used

The network parameters and auto refresh parameters have been set by GX Developer.

(1) Parameter setting

(a) Network parameter setting

(b) Auto refresh parameter setting

5-11

5. PROGRAMMING MELSEC-A

(3) Program example

AJ65BT-64RD status c heck

Reads data link status.

AJ65BT-64RD
data link normal

AJ65BT-64RD
data link abnormal

Initial setting

Initial setting change

Initial setting change

Conversion enable/disable designation

CH. 1 conversion enable

CH.1󰂭󰝖󱷖

CH. 2 conversion enable

CH.2󰂭󰝖󱷖

Detected temperature value read

Handling at error occurrence

Error reset

CH. 1 sampling processing/
travel average processing
designation flag (RY04)

CH. 2 sampling processing
/travel average processing
designati on flag ( RY05)

Offset/gain value
selection flag (RY77)

Turns ON initial data
processing completion
flag (RY78).
Turns OFF initial data
processing completion
flag (RY78).

CH. 1 sampling processing/
travel average processing
designati on flag ( RY04)

CH. 2 sampling processing
/travel average processing
designation flag (RY05)

Offset/gain value
selection flag (RY77)

Turns ON initial data setting
request flag (RY79).

Turns OFF initial data setting
request flag (RY79).

Turns ON CH. 1 conversion
enable flag (RY00).

Turns ON CH. 2 conversion
enable flag (RY01).

Reads CH. 1 detected
temperature value (16 bits)
(RWr0).

Reads CH. 1 detected
temperature value (32 bits)
(RWr4, RWr5).

Reads CH. 2 detected
temperature value (16 bits)
(RWr1).
Reads CH. 2 detected
temperature value (32 bits)
(RWr6, RWr7).

Turns ON Y91 when E2PROM
is faulty.

Turns ON Y92 when CH. 1
wire breakage is detected.

Turns ON Y93 when CH. 2
wire breakage is detected.

Turns ON error reset
request flag (RY7A).

Turns OFF error reset
request flag (RY7A).

*The program within the dotted frame is necessary only when the initial setting is changed.

5-12

5. PROGRAMMING MELSEC-A

5.5 Program Example when ACPU/QCPU (A Mode) Is Used (Dedicated Instructions)

The network parameters and auto refresh parameters have been set by the sequence program.

(1) Program example

Network parameter setting by dedicated instruction RLPA

Synchronous mode invalid

Number of connected
modules: 1

AJ65BT-64RD station
information
(remote device station, 4
stations occupied, station
No. 1)

Dedicated instruction
(RLPA)

Master module head
I/O No.

Parameter storage
head device

Device that turns ON
1 scan at completion

Auto refresh parameter setting by dedicated instruction RRPA check

Reads parameter status
at abnormal completion.

RX head number setting

"X" setting

X400 setting

128 points setting

RY head number setting

"Y" setting

Y400 setting

128 points setting

RW head number setting

"D" setting

D200 setting

263 points setting

5-13

5. PROGRAMMING MELSEC-A

SB head number setting

"B" setting

B0 setting

512 points setting

SW head number setting

"W" setting

W0 setting

256 points setting

Dedicated instruction (RRPA)

Master module head I/O No.

Parameter storage head
device

AJ65BT-64RD status check

Initial setting

Initial setting change

󳬌󳬳󳬟󳭋󳭓󱷔󰈐󰂭󰤾

Initial setting change

Reads data link status.

AJ65BT-64RD
data link normal

AJ65BT-64RD
data link abnormal

CH. 1 sampling processing/
travel average processing
designation flag (RY04)

CH. 2 sampling processing
/travel average processing
designation flag (RY05)

Offset/gain value
selection flag (RY77)

Turns ON initial data
processing completion
flag (RY78).

Turns OFF initial data
processing completion
flag (RY78).

CH. 1 sampling processing/
travel average processing
designation flag (RY04)

CH. 2 sampling processing
/travel average processing
designation flag (RY05)

Offset/gain value
selection flag (RY77)

Turns ON initial data
setting request flag (RY79).

Turns OFF initial data
setting request flag (RY79).

* The program within the dotted frame is necessary only when the initial setting is changed.

5-14

5. PROGRAMMING MELSEC-A

Conversion enable/disable designation

Detected te mperature value read

Handling at error occurrence

CH. 1 conversion enable

CH. 2 conversion enable

CH. 2󰂭󰝖󱷖

Error rese t

Turns ON CH. 1 conversion
enable flag (RY00).

Turns ON CH. 2 conversion
enable flag (RY01).

Reads CH. 1 detected
temperature value (16 bits)
(RWr0).
Reads CH. 1 detected

temperature value (32 bits)
(RWr4, RWr5).

Reads CH. 2 detected
temperature value (16 bits)
(RWr1).

Reads CH. 2 detected
temperature value (32 bits)
(RWr6, RWr7).

Turns ON Y91 when E
is faulty.

Turns ON Y92 when CH. 1
wire breakage is detected.

Turns ON Y93 when CH. 2
wire breakage is detected.

Turns ON error reset
request flag (RY7A).

Turns OFF error reset
request flag (RY7A).

2

PROM

5-15

5. PROGRAMMING MELSEC-A

5.6 Program Example when ACPU/QCPU (A Mode) Is Used (FROM/TO Instructions)

The network parameters have been set by the sequence program.

(1) Program example

5-16

5. PROGRAMMING MELSEC-A

Initial setting

Initial setting change

󳬌󳬳󳬟󳭋󳭓

Initial setting change

󱷔󰈐󰂭󰤾

Conversion enable/disable designation

CH. 1 conversion enable

CH. 1󰂭󰝖󱷖

CH. 2 conversion enable

CH. 2󰂭󰝖󱷖

Detected temperature value read

Handling at error occurrence

Error reset

󳬐󳭑󳭤󳭒󳬣󳬫󳬰

Remote output signal write

CH. 1 sampling processing/
travel average processing
designation flag (RY04)

CH. 2 sampling processing
/travel average processing
designation flag (RY05)

Offset/gain value
selection flag (RY77)

Turns ON initial data
processi ng completion
flag (RY7 8).

Turns OFF initial data
processi ng completion
flag (RY7 8).

CH. 1 sampling processing/
travel average processing
designati on flag ( RY04)

CH. 2 sampling processing
/travel average processing
designation flag (RY05)

Offset/gain value
selection flag (RY77)

Turns ON initial data setting
request flag (RY79).

Turns OFF initial data setting
request flag (RY79).

Turns ON CH . 1 convers ion
enable flag (RY00).

Turns ON CH . 2 convers ion
enable flag (RY01).

Reads CH. 1 detected
temperature value (16 bits)
(RWr0).

Reads CH. 1 detected
temperature value (32 bits)
(RWr4, RWr5).

Reads CH. 2 detected
temperature value (16 bits)
(RWr1).
Reads CH. 2 detected
temperature value (32 bits)
(RWr6, RWr7).

Turns ON Y91 when E2PROM
is faulty.

Turns ON Y92 when CH. 1
wire breakage is detected.

Turns ON Y93 when CH. 2
wire breakage is detected.

Turns ON error reset
request flag (RY7A).

Turns OFF error reset
request flag (RY7A).

Writes RY00-RY7F data to
Y400-Y47F.

*The program within the dotted frame is necessary only when the initial setting is changed.

5-17

6. TROUBLESHOOTING MELSEC-A

6. TROUBLESHOOTING

The general troubleshooting methods for using AJ65BT-64RD is explained below.

6.1 Cause of Errors and Corrective Actions by LED Indication

The following describes the error confirmation method using the LEDs on AJ65BT-64RD.
For the errors associated with the programmable controller CPU and master module, refer to the
user’s manual for the programmable controller CPU and master module, respectively.

(1) When AJ65BT-64RD’s “RUN” LED is off

Cause Corrective action

Watchdog timer error occurred.

24 V DC power is not supplied to AJ65BT-64RD,
or voltage is insufficient.

At test mode, the offset/gain setting switch is
positioned at SET.

(2) When AJ65BT-64RD’s “RUN” LED flikers at 0.5-second intrvals

Confirm the watchdog timer error with the master module’s
special link register, then restart the power to AJ65BT-64RD *1.

If “RUN” LED does not come on after power restart, contact the
nearest representative or branch regarding the problem, as
hardware may be faulty.

Check the voltage of 24 V DC power supply.

After setting offset/gain, position the mode switch to 0
(NORMAL).

Cause Corrective action

At test mode, the offset/gain setting switch is
positioned at OFFSET or GAIN.

After setting offset/gain, position the mode switch to 0
(NORMAL).

(3) When AJ65BT-64RD’s “RUN” LED flikers at 0.1-second intrvals

Cause Corrective action

In the test mode the offset or gain value being
used for compensation has exceeded the setting
range.

Set the offset value or gain value within the following range :

• Within the temperature input range

• (Gain value) – (Offset value)

≥ 10 °C

6-1

6. TROUBLESHOOTING MELSEC-A

(4) When AJ65BT-64RD’s “L RUN.” LED is off

Cause Corrective action

Cables are broken or shorted.

The master station has the stopped data link. Confirm that no error has occurred in the master station.

Duplicate station number.

The setting switch is set outside the range
(station number 0, or 62 or greater, transmission
speed 5 to 9).

(5) When AJ65BT-64RD’s “L ERR.” LED flikers

Cause Corrective action

The setting of station number switch or
transmission speed switch is changed during
normal operation.

The station number switch or transmission
speed switch is faulty.

(6) When AJ65BT-64RD’s “L ERR.” LED is on

Look for the broken or shorted transmission cables and repair
them.

Correct the station number setting of the duplicate module, then
restart the power *1.

Correct the setting switch setting, then restart the power *1.

Reinstate the station number or transmission speed setting to
the original setting before the change, then restart the power.
*1.

If “L RUN” LED does not come on after power restart, contact
the nearest representative or branch regarding the problem, as
hardware may be faulty.

If “L ERR.” LED starts to flicker while in operation even though
no change has been made to the switch setting, contact the
nearest representative or branch regarding the problem, as
hardware may be faulty.

Cause Corrective action

The setting switch is set outside the range
(station number 0, or 62 or greater, transmission
speed 5 to 9).

Forgot to install the terminal resistor.

AJ65BT-64RD or transmission cable is affected
by noise.

Correct the setting switch setting, then restart the power. *1

Confirm whether the terminal resistor is installed. If the terminal
resistor is not connected, connect it, then restart the power. *1

• Ground (class D grounding) the both ends of shield of the
CC-Link dedicated cable via SLD and FG of each module.

• Securely ground the FG terminal of the module.

• When performing pipe wiring, securely ground the pipe.

*1 Restart power : Turn on the power supply again, or turn on the reset switch.

6-2

6. TROUBLESHOOTING MELSEC-A

6.2 When Wire Breakage Detection Flag is On

Cause Corrective action

Connection between platinum temperature­measuring resistor and cable is incomplete.

Terminal screw is loose. Tighten the terminal screws within the specified torque range.

The connected platinum temperature-measuring
resistor or cable has wire breakage.

The channel to which platinum temperature­measuring resistor is not connected is
designated as conversion enabled.

Securely connect the platinum temperature-measuring resistor
and cable.

Check the continuity of platinum temperature-measuring
resistor and cable, and replace the broken platinum
temperature-measuring resistor or cable.

Confirm the channels for which the conversion enable is
designated and channel to which platinum temperature­measuring resistor is connected, then correct the conversion
enable designation.

6.3 When E2PROM Error Flag is On

Cause Corrective action

Error in the internal memory storing the offset
value/gain value set by user

Restart power for AJ65BT-64RD. *1

2

PROM error flag is still on after power restart, contact

If the E
the nearest representative or branch regarding the problem, as
hardware may be faulty.

*1 Restart power : Turn on the power supply again, or turn on the reset switch.

6.4 When Detected Temperature Value cannot be Read

Cause Corrective action

The channel used is designated as conversion
disabled.

Programmable controller CPU or master module
error

Designate the channel as conversion enable in sequence
program.

Confirm the programmable controller CPU and master module.

6.5 When Detected Temperature Value is Abnormal

Cause Corrective action

The platinum temperature-measuring resistor
connected is different from what is designated.

Affected by noise.

Designate the platinum temperature-measuring resistor
connected.

Confirm the influence from grounding and adjacent devices,
then take measures against noise.

6-3

6. TROUBLESHOOTING MELSEC-A

6.6 When There is a Communication Error between Master Station and AJ65BT-64RD

If the station number duplicate bit is turned on in the link special register SW0098 to SW009B
(duplicate station number status), check the corresponding station number of AJ65BT-64RD using the
following flow.

Troubleshooting flow when “ERR.” LED of master station is flickering

"ERR." LED of master
station flickers

Do the

parameter setting

and loading system

configuration

match?

Y

Is the

mast er s tat ion

link special register

SW0080 to SW0083 (o ther

station data link

status ) tu rn ed

ON?

Y

Is th e

mast er s tat ion

link special register

SW0098 to SW009B

(duplicate station

number status)

turned ON?

N

Correct parameter setting or
loading system configuration

N

Master station failure

N

Y

Check the module whose
SW0098 to SW009B is ON

Is th e st ati on

number switch set

correctly?

Y

Corresponding module failure

N

Set the station number
switch correctly

Restar t t he p ow er s up pl y/
Turn on the reset switch

Check the module whose
SW0080 to SW0083 is ON

Is po wer su pp ly

turned ON?

Y

Is " POWER"

LED lit?

Y

Is " RD" LED lit?

Y

Check on the master side

Check on th e AJ 65BT-64RD s id e

N

Turn the power ON

N

Is the supplied

voltage within the

specified range?

Y

Corresponding module failure

N

Are

communication

cables connected

correctly?

*1

Y

Corresponding module failure

N

Set th e sup pl ied vol tage
within the specified range

N

Correct the wiring of
communication cables

To the next page To the next page To the next page

6-4

6. TROUBLESHOOTING MELSEC-A

From the previous page From the previous page From the previous page

Is "L RUN" LED lit?

Y

Is "SD" LED lit

(flickering)?

Y

N

Is "SD" LED lit

(flickering)?

Y

N

Corresponding
module failure

Is the

station number

switch s et correctly ( not

duplicated with other

station)?

Y

N

Is the baud rate

setting correct?

Y

Are the

communication

cables connected

correctly?

Y

Corresponding module failure
(baud rate switch)

N

Set the station number correctly

Correct the baud rate setting

Restart the power supply/
Turn ON the reset switch

*1

Connect the communication
cables correctly

N

N

Restart the power supply/
Turn ON the reset switch

Corresponding module failure
(station number switch)

Is the

station number

switch set correctly (not

duplicated with other

station)?

Y

Corresponding module failure
(station number switch)

N

Set the station number correctly

Restart the power supply/
Turn ON the reset switch

Complete

*1 Check for short-circuits, reversed connection, wire breakage, terminal resistor, FG connection,

overall distance and station-to-station distance.

6-5

APPENDIX MELSEC-A

APPENDIX

Appendix 1 Standard Thermal Electromotive Force of Platinum

Temperature-Measuring Resistor

Appendix 1.1 New JIS⋅IEC type (Pt100)

JIS C 1604-1997, IEC 751-1983 Unit : Ω

–100

60.26 100.00 –0 0 100.00 138.51 175.86 212.05 247.09 280.98 313.71

56.19 96.09 –10 10 103.90 142.29 179.53 215.61 250.53 284.30

52.11 92.16 –20 20 107.79 146.07 183.19 219.15 253.96 287.62

48.00 88.22 –30 30 111.67 149.83 186.84 222.68 257.38 290.92

43.88 84.27 –40 40 115.54 153.58 190.47 226.21 260.78 294.21

39.72 80.31 –50 50 119.40 157.33 194.10 229.72 264.18 297.49

35.54 76.33 –60 60 123.24 161.05 197.71 233.21 267.56 300.75

31.34 72.33 –70 70 127.08 164.77 201.31 236.70 270.93 304.01

27.10 68.33 –80 80 130.90 168.48 204.90 240.18 274.29 307.25

64.30 –90 90 134.71 172.17 208.48 243.64 277.64 310.49

–0

Tempe

rature

[°C]

Tempe

rature

[°C]

0

100

200

300

400

500

600

Appendix 1.2 Old JIS type (JPt100)

JIS C 1604-1981 Unit : Ω

–100

59.57 100.00 –0 0 100.00 139.16 177.13 213.30 249.56 284.02 317.28

55.44 96.02 –10 10 103.97 143.01 180.86 217.54 253.06 287.40

51.29 92.02 –20 20 107.93 146.85 184.58 221.15 256.55 290.77

47.11 88.01 –30 30 111.88 150.67 188.29 224.74 260.02 294.12

42.91 83.99 –40 40 115.81 154.49 191.99 228.32 263.49 297.47

38.68 79.96 –50 50 119.73 158.29 195.67 231.89 266.94 300.80

34.42 75.91 –60 60 123.64 162.08 199.35 235.45 270.38 304.12

30.12 71.85 –70 70 127.54 165.86 203.01 238.99 273.80 307.43

25.80 67.77 –80 80 131.42 169.63 206.66 242.53 277.22 310.72

63.68 –90 90 135.30 173.38 210.30 246.05 280.63 314.01

–0

Tempe

rature

[°C]

Tempe

rature

[°C]

0

100

200

300

400

500

600

A-1

APPENDIX MELSEC-A

Appendix 2 External Dimensions Diagram

(1) AJ65BT–64RD3

(2) AJ65BT–64RD4

A-2

WARRANTY

SH(NA)-4001-E

Please confirm the following product warranty details before using this product.

1. Gratis Warranty Term and Gratis Warranty Range

If any faults or defects (hereinafter "Failure") found to be the responsibility of Mitsubishi occurs during use of the product
within the gratis warranty term, the product shall be repaired at no cost via the sales representative or Mitsubishi Service
Company.
However, if repairs are required onsite at domestic or overseas location, expenses to send an engineer will be solely at
the customer’s discretion. Mitsubishi shall not be held responsible for any re-commissioning, maintenance, or testing on­site that involves replacement of the failed module.

[Gratis Warranty Term]

The gratis warranty term of the product shall be for one year after the date of purchase or delivery to a designated
place.
Note that after manufacture and shipment from Mitsubishi, the maximum distribution period shall be six (6) months, and
the longest gratis warranty term after manufacturing shall be eighteen (18) months. The gratis warranty term of repair
parts shall not exceed the gratis warranty term before repairs.

[Gratis Warranty Range]

(1) The range shall be limited to normal use within the usage state, usage methods and usage environment, etc.,

which follow the conditions and precautions, etc., given in the instruction manual, user's manual and caution labels
on the product.

(2) Even within the gratis warranty term, repairs shall be charged for in the following cases.

1. Failure occurring from inappropriate storage or handling, carelessness or negligence by the user. Failure caused
by the user's hardware or software design.

2. Failure caused by unapproved modifications, etc., to the product by the user.

3. When the Mitsubishi product is assembled into a user's device, Failure that could have been avoided if functions
or structures, judged as necessary in the legal safety measures the user's device is subject to or as necessary
by industry standards, had been provided.

4. Failure that could have been avoided if consumable parts (battery, backlight, fuse, etc.) designated in the
instruction manual had been correctly serviced or replaced.

5. Failure caused by external irresistible forces such as fires or abnormal voltages, and Failure caused by force
majeure such as earthquakes, lightning, wind and water damage.

6. Failure caused by reasons unpredictable by scientific technology standards at time of shipment from Mitsubishi.

7. Any other failure found not to be the responsibility of Mitsubishi or that admitted not to be so by the user.

2. Onerous repair term after discontinuation of production

(1) Mitsubishi shall accept onerous product repairs for seven (7) years after production of the product is discontinued.

Discontinuation of production shall be notified with Mitsubishi Technical Bulletins, etc.

(2) Product supply (including repair parts) is not available after production is discontinued.

3. Overseas service

Overseas, repairs shall be accepted by Mitsubishi's local overseas FA Center. Note that the repair conditions at each FA Center may

differ.

4. Exclusion of loss in opportunity and secondary loss from warranty liability

Regardless of the gratis warranty term, Mitsubishi shall not be liable for compensation of damages caused by any cause
found not to be the responsibility of Mitsubishi, loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi
products, special damages and secondary damages whether foreseeable or not , compensation for accidents, and
compensation for damages to products other than Mitsubishi products, replacement by the user, maintenance of on-site
equipment, start-up test run and other tasks.

5. Changes in product specifications

The specifications given in the catalogs, manuals or technical documents are subject to change without prior notice.

SH(NA)-4001-E(1012)MEE

Specifications subject to change without notice.

When exported from Japan, this manual does not require application to the
Ministry of Economy, Trade and Industry for service transaction permission.

HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
NAGOYA WORKS : 1-14 , YADA-MINAMI 5-CHOME , HIGASHI-KU, NAGOYA , JAPAN

MODEL: AJ65BT-64RD-U-E
MODEL CODE: 13JL54