Mitsubishi AJ65BT-R2 User manual

A - 1
SAFETY INSTRUCTIONS
(Always read these instructions before using this equipment.)
Before using this product, please read this manual and the relevant manuals introduced in this manual
carefully and pay full attention to safety to handle the product correctly.
The instructions given in this manual are concerned with this product. For the safety instructions of the
programmable controller system, please read the CPU module user's manual.
In this manual, the safety instructions are ranked as "DANGER" and "CAUTION".
!DANGER
CAUTION
!
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in medium or slight personal injury or physical damage.
Note that the !CAUTION level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to personal safety.
Please save this manual to make it accessible when required and always forward it to the end user.
[Design Instructions]
!DANGER
If a communication error occurs in the data link, the following will occur in the station having the
communication error.
Use the communication status information, and configure an interlock circuit in the sequence
program so that the system will operate safely.
Incorrect outputs and incorrect operations can lead to accidents.
(1) All points of the general-purpose input from this module will turn OFF.
(2) All points of the general-purpose output from this module will turn OFF.
The input/output may turn ON or OFF depending on the module trouble.
Provide a circuit that externally monitors input/output signals that could lead to serious trouble.

A - 2
!CAUTION
Do not bind the control wire or communication cable with the main circuit or power wire, or
place the control wire near these.
Separate by at least 100mm or more.
Failure to observe this could lead to malfunctions caused by noise.
Always connect the master module and CC-Link dedicated cable at the data link terminal block.
If the data link terminal block and general-purpose input/output terminal block are incorrectly
inserted, module trouble could occur.
Data link terminal
bloc
k
General-purpose input/
output terminal block
[Mounting Instructions]
!CAUTION
Use this module within the general specification environment described in the manual.
Use in an environment outside the general specification range could lead to electric shocks,
fires, malfunctioning, product damage or deterioration.
Always connect the crimp, press-fit or solder the connector wire connections with the maker-
designated tools, and securely connect the connector to the module.
An incomplete connection could lead to short-circuits or malfunctioning.
Do not directly touch the conductive section of the module.
Failure to observe this could lead to module malfunctioning or trouble.
Securely fix the module with the DIN rail or installation screw. Tighten the installation screw
within the designated torque range.
A loose screw could lead to dropping, short-circuiting or malfunctioning.
If the screw is too tight, dropping or short-circuiting could occur due to screw damage.
Securely mount the connector of each connection cable to the mounting section.
An incomplete connection could lead to malfunctioning caused by an incorrect contact.

A - 3
[Wiring Instructions]
!CAUTION
Before starting installation or wiring work, be sure to shut off all phases of external power supply
used by the system.
Failure to shut off all phases could lead to electric shocks, product damage or malfunctioning.
Always install the terminal covers enclosed with the product before turning ON the power or
operating the product after installation or wiring work.
Failure to install the terminal cover could lead to electric shocks.
Always ground the FG terminal with Class D grounding (Class 3 grounding) dedicated of the
programmable controller.
Failure to do so could lead to malfunctioning.
Always confirm the product's rated voltage and terminal layout before wiring the module.
Connecting with a power supply other than the rated power supply, or incorrect wiring could
lead to fires or trouble.
Tighten the terminal screws within the specified torque range.
A loose terminal screw could lead to short-circuiting or malfunctioning.
If the terminal screw is too tight, dropping or short-circuiting could occur due to screw damage.
Make sure that foreign matter, such as cutting chips or wire scraps, do not enter the module.
Failure to observe this could lead to fires, trouble or malfunctioning.
The communication cables and power supply cable connected to the module must be placed in
a conduit or fixed with a clamp.
If the cable is not placed in a conduit or fixed with a clamp, the module or cable could be
damaged by the cable variation, movement or unintentional pulling leading to malfunctioning
caused by an improper cable connection.
Do not install the control lines together with the communication cables, or bring them close to
each other. Failure to do so may cause malfunctions due to noise.
Do not remove the communication cable or power supply cable connected to the module by
pulling on the cable section.
If the cable has a connector, hold the connector at the section connected to the module, and
remove.
If the cable does not have a connector, loosen the screws at the section connected to the
module, and remove.
Pulling on the cable while connected to the module could lead to module or cable damage, or
malfunctioning caused by an improper cable connection.

A - 4
[Startup/Maintenance Instructions]
!CAUTION
When power is ON, do not touch the terminals.
Doing so can cause an electric shock or malfunction.
Before cleaning or tightening the terminal screws and module mounting screws, be sure to shut
off all phases of external power supply used by the system.
Failure to shut off all phases could lead to module trouble or malfunctioning.
Do not touch the connector inside the lid at the front of the module.
Failure to observe this could lead to module trouble or malfunctioning.
Never disassemble or modify the module.
Failure to observe this could lead to trouble, malfunctioning, injuries or fires.
Do not drop or apply any strong impact to the module. Doing so may damage the module.
Before installing or removing the module on the panel, be sure to shut off all phases of external
power supply used by the system.
Failure to shut off all phases could lead to module trouble or malfunctioning.
Do not install/remove the terminal block more than 50 times after the first use of the product.
(IEC 61131-2 compliant)
[Disposal Instructions]
!CAUTION
When disposing of the product, handle it as industrial waste.

A - 5
REVISIONS
* The instruction manual No. is described on the lower left of the back cover of this instruction manual.
Date of print * Instruction manual No. Revision details
Jul., 1997 IB (NA)-66781-A Initial print
Apr., 1999 IB (NA)-66781-B Complete review
Sep., 2002 IB (NA)-66781-C Equivalent to Japanese version D
Addition of description for use of the QCPU (Q mode)
Addition
Compliance with the EMC/Low Voltage Directive, Section 4.5.1,
Section 5.2.2
Deletion
Section 2.3
Partial Correction
SAFETY INSTRUCTIONS, About Manuals, Chapter 1, Section 2.1,
Section 2.2, Section 3.1, Section 3.2, Section 3.3, Section 3.4, Section
3.7, Section 4.1, Section 4.2, Section 4.4, Section 4.5.2, Section 4.5.3,
Section 4.6, Section 5.2, Section 5.6.2, Section 8.3, Section 9.1,
Section 9.2.4, Section 10.1.2, Section 10.2
Nov., 2005 IB (NA)-66781-D Partial Correction
SAFETY INSTRUCTIONS, About Manuals, Generic Terms and
Abbreviations, Definitions and Details of Terms, Section 1.1, Section
2.1, 2.2, Section 3.1, 3.2, 3.4, 3.6.1, 3.6.2, 3.7, 3.8, 3.9.1, 3.9.2,
Section 4.2, 4.4, 4.5.2, 4.5.3, Section 5.2.1, 5.3, 5.4, 5.5.1, 5.5.2,
5.7.1, 5.7.2, 5.7.3, 5.7.4, Section 6.3.1, 6.3.2, 6.4.1, 6.4.2, Section
7.3.1, 7.4.3, 7.5.2, Section 8.2, 8.3, 8.4, 8.5, 8.9.2, Section 9.1, 9.2.1,
9.2.2, 9.2.3, 9.2.4, 9.3.2, 9.3.3, Section 10.1.2, 10.3
Addition
INDEX
Oct., 2006 IB (NA)-66781-E Partial Correction
SAFETY INSTRUCTIONS, Section 3.2, 3.4, 4.4, 7.3
Nov., 2007 IB (NA)-66781-F Change of a term
"PLC" was changed to "programmable controller".
Partial Correction
Section 4.2, 4.4, Section 5.1, 5.2.1, 5.5.1, 5.6.2, 5.7.3, Section 6.2,
6.3, 6.4.1, 6.4.2, Section 7.4.3, Section 8.10, Section 9.2.1, 9.2.2,
9.2.4, 9.3.1, 9.3.3, Section 10.1.2, 10.3, 10.4
Japanese Manual Version SH-3633-G
This manual does not guarantee the implementation of industrial rights or other rights, and does not authorize the
implementation rights. Mitsubishi shall not be held liable for any problems regarding industrial rights that occur through
the use of the contents given in this manual.
©1997 MITSUBISHI ELECTRIC CORPORATION

A - 6
INTRODUCTION
Thank you for purchasing the Mitsubishi general-purpose programmable controller MELSEC-A.
Always read through this manual, and fully comprehend the functions and performance of the A Series
programmable controller before starting use to ensure correct usage of this product.
Make sure that this manual is delivered to the final user.
CONTENTS
Safety Instructions..........................................................................................................................................A- 1
Revisions ........................................................................................................................................................A- 5
About Manuals ...............................................................................................................................................A- 9
Compliance with the EMC/Low Voltage Directive.........................................................................................A- 9
Using This Manual.........................................................................................................................................A- 10
Generic Terms and Abbreviations ................................................................................................................A- 11
Definitions and Details of Terms...................................................................................................................A- 12
1. OUTLINE 1- 1 to 1- 4
1.1 Features ................................................................................................................................................... 1- 2
2. SYSTEM CONFIGURATION 2- 1 to 2- 2
2.1 System configuration ............................................................................................................................... 2- 1
2.2 Applicable systems .................................................................................................................................. 2- 2
3. SPECIFICATIONS 3- 1 to 3- 26
3.1 General specifications.............................................................................................................................. 3- 1
3.2 Performance specifications...................................................................................................................... 3- 2
3.3 RS-232-C interface specifications ........................................................................................................... 3- 3
3.4 General-purpose input/output specifications........................................................................................... 3- 4
3.5 List of functions ........................................................................................................................................ 3- 6
3.6 Input/output signals for master module ................................................................................................... 3- 7
3.6.1 List of input/output signals................................................................................................................. 3- 7
3.6.2 Details of input/output signals ........................................................................................................... 3- 8
3.7 R2 buffer memory list.............................................................................................................................. 3- 13
3.8 Transmission delay time ......................................................................................................................... 3- 19
3.9 Transmission/reception time................................................................................................................... 3- 20
3.9.1 When using buffer memory automatic update function .................................................................. 3- 20
3.9.2 When using transmission/reception buffer ...................................................................................... 3- 23
4. PROCEDURES AND SETTINGS BEFORE OPERATIION 4- 1 to 4- 12
4.1 Procedures before operation ................................................................................................................... 4- 1
4.2 Precautions for handling .......................................................................................................................... 4- 3
4.3 Installation environment ........................................................................................................................... 4- 5
4.4 Names of each part, and settings............................................................................................................ 4- 6
4.5 Wiring........................................................................................................................................................ 4- 8

A - 7
4.5.1 Precautions for handling the CC-Link dedicated cables.................................................................. 4- 8
4.5.2 Connection of the CC-Link dedicated cables ................................................................................... 4- 8
4.5.3 Connection with external device ....................................................................................................... 4- 9
4.6 Checking the module’s state (Hardware test) ........................................................................................ 4- 11
5. PRELIMINARY INFORMATION 5- 1 to 5- 46
5.1 System used in this manual..................................................................................................................... 5- 1
5.2 Programming Precautions ....................................................................................................................... 5- 3
5.2.1 About bank changing of the A series master module ...................................................................... 5- 3
5.2.2 About dedicated commands for use of the buffer memory automatic update function .................. 5- 5
5.3 Program basic format............................................................................................................................... 5- 6
5.4 Initializing the master station.................................................................................................................... 5- 9
5.5 Initializing the R2 ..................................................................................................................................... 5- 12
5.5.1 Using the buffer memory automatic update function ...................................................................... 5- 12
5.5.2 Using the transmission/reception buffer .......................................................................................... 5- 15
5.6 Reading and writing the buffer memory (using the buffer memory automatic update function) .......... 5- 18
5.6.1 Outline............................................................................................................................................... 5- 18
5.6.2 Understanding the roles of each area ............................................................................................. 5- 19
5.7 Reading and writing the buffer memory (using the transmission/reception buffer) .............................. 5- 28
5.7.1 Outline............................................................................................................................................... 5- 28
5.7.2 About control data ............................................................................................................................ 5- 29
5.7.3 Reading the R2 buffer memory........................................................................................................ 5- 40
5.7.4 Writing to the R2 buffer memory...................................................................................................... 5- 43
6. EXCHANGING DATA WITH AN EXTERNAL DEVICE 6- 1 to 6- 30
6.1 Matters to understand before transmitting data ...................................................................................... 6- 1
6.2 Matters to know before receiving data .................................................................................................... 6- 5
6.3 Exchanging data using the buffer memory automatic update function .................................................. 6- 9
6.3.1 Transmitting data to an external device .......................................................................................... 6- 9
6.3.2 Receiving data from an external device .......................................................................................... 6- 14
6.4 Exchanging data using the transmission/reception buffer.....................................................................6- 18
6.4.1 Transmitting data to an external device .......................................................................................... 6- 18
6.4.2 Receiving data from an external device .......................................................................................... 6- 24
7. USING FRAMES WHEN EXCHANGING DATA 7- 1 to 7- 38
7.1 What are frames?..................................................................................................................................... 7- 1
7.2 Transmitting data using frames ............................................................................................................... 7- 2
7.2.1 Transmitting using transmission frame 1 area ................................................................................. 7- 2
7.2.2 Transmitting using the transmission frame 2 area........................................................................... 7- 4
7.3 Receiving data using frames ................................................................................................................... 7- 6
7.3.1 Reception data .................................................................................................................................. 7- 8
7.3.2 Reading the reception data.............................................................................................................. 7- 10
7.4 Transmitting data at the device and status change ............................................................................... 7- 13
7.4.1 Outline............................................................................................................................................... 7- 13
7.4.2 Devices and statuses that can be designated................................................................................. 7- 14
7.4.3 Setting the R2 buffer memory.......................................................................................................... 7- 15

A - 8
7.4.4 Precautions....................................................................................................................................... 7- 21
7.5 Registration frames................................................................................................................................. 7- 22
7.5.1 List of default registration frames..................................................................................................... 7- 23
7.5.2 Details of user registration frames ................................................................................................... 7- 25
8. OTHER FUNCTIONS 8- 1 to 8- 24
8.1 Canceling data communication to an external device ............................................................................ 8- 1
8.2 Forcibly completing reception .................................................................................................................. 8- 3
8.3 Flow control .............................................................................................................................................. 8- 6
8.4 ASCII-BIN conversion of transmission data........................................................................................... 8- 10
8.5 RW update function ................................................................................................................................ 8- 12
8.6 Initializing the R2 ..................................................................................................................................... 8- 15
8.7 Clearing the OS reception area .............................................................................................................. 8- 16
8.8 Registering and initializing the R2 EEPROM ......................................................................................... 8- 19
8.9 Controlling the RS-232-C signal ............................................................................................................. 8- 22
8.9.1 Correspondence of RS-232-C control signal and remote input/output signal ............................... 8- 22
8.9.2 Precautions for using RS-232-C control signal read/write function................................................ 8- 23
8.10 Confirming the R2 switch states and software version........................................................................ 8- 24
9. PROGRAM EXAMPLES 9- 1 to 9- 48
9.1 Conditions for program examples ........................................................................................................... 9- 1
9.2 Example of program for using buffer memory automatic update function ............................................. 9- 2
9.2.1 When using FROM/TO command with ACPU / QCPU-A (A mode) ............................................... 9- 2
9.2.2 When using dedicated commands with ACPU / QCPU-A (A mode) .............................................. 9- 6
9.2.3 When using dedicated commands with QCPU (Q mode) / QnACPU............................................ 9- 11
9.2.4 When using the FROM/TO commands with ACPU / QCPU-A (A mode)
(Three R2 modules connected) ...................................................................................................... 9- 14
9.3 Example of program for using transmission/reception buffer ................................................................ 9- 28
9.3.1 When using FROM/TO command with ACPU / QCPU-A (A mode) .............................................. 9- 28
9.3.2 When using dedicated commands with ACPU / QCPU-A (A mode) ............................................. 9- 37
9.3.3 When using dedicated commands with QCPU (Q mode) / QnACPU............................................ 9- 43
10. TROUBLESHOOTING 10- 1 to 10- 12
10.1 Error codes........................................................................................................................................... 10- 1
10.1.1 Error code storage area ................................................................................................................ 10- 1
10.1.2 List of error codes.......................................................................................................................... 10- 2
10.2 Confirming the error with the LED ....................................................................................................... 10- 5
10.3 Examples of trouble in general-purpose input circuit.......................................................................... 10- 7
10.4 Troubleshooting per symptom ............................................................................................................. 10- 9
10.5 Troubleshooting when the master station's ERR. LED flashes......................................................... 10- 10
APPENDIX Appendix- 1 to Appendix- 2
Appendix 1 Outline dimension drawing ............................................................................................Appendix- 1
INDEX INDEX- 1 to INDEX 3

A - 9
About Manuals
The following manuals are also related to this product.
In necessary, order them by quoting the details in the tables below.
Related Manuals
Manual Name Manual Number
(Model Code)
Control & Communication Link System Master/Local Module Type AJ61BT11/A1SJ61BT11
User's Manual
Explains the configuration, performance and specifications, functions, handling, wiring and
troubleshooting of the AJ61BT11 and A1SJ61BT11 system. (Sold separately)
IB-66721
(13J872)
Control & Communication Link System Master/Local Module Type
AJ61QBT11/A1SJ61QBT11 User's Manual
Explains the configuration, performance and specifications, functions, handling, wiring and
troubleshooting of the AJ61QBT11 and A1SJ61QBT11 system. (Sold separately)
IB-66722
(13J873)
CC-Link System Master/Local Module User's Manual QJ61BT11N
Explains the configuration, performance and specifications, functions, handling, wiring and
troubleshooting of the QJ61BT11N system. (Sold separately)
SH-080394E
(13JR64)
AnSHCPU/AnACPU/AnUCPU/QCPU-A (A mode) Programming Manual QJ61BT11
(Dedicated Instructions)
Explains the configuration, performance and specifications, functions, handling, wiring and
troubleshooting of the QJ61BT11 system. (Sold separately)
IB-66251
(13J742)
Compliance with the EMC/Low Voltage Directive
When incorporating the Mitsubishi programmable controller into other machinery or
equipment and keeping compliance with the EMC and low voltage directives, refer to
Chapter 3, "EMC Directives and Low Voltage Directives" of the User's Manual
(Hardware) included with the CPU module or base unit used.
The CE logo is printed on the rating plate of the programmable controller, indicating
compliance with the EMC and low voltage directives.
To conform this product to the EMC Directive and Low Voltage Directive, refer to the
Section of "CC-Link Modules" in Chapter 3 "EMC Directive and Low Voltage Directive"
in the User’s Manual (Hardware) of the CPU module used or the programmable
controller CPU supplied with the base unit.

A - 10
Using This Manual
This section "Using this manual" describes the R2 usage in categories of purpose.
Refer to the following details when using this manual.
(1) To find the characteristics of R2 (Section 1.1)
The features are described in section 1.1.
(2) To find the system configuration (Section 2.1)
The configuration of a system using R2 is explained in section 2.1.
(3) To find the master module that can use R2, and the CPU version that can use the
CC-Link dedicated commands (Section 2.2)
The master module that can use R2, and the CPU version that can use the CC-
Link dedicated commands are explained in section 2.2.
(4) To find the R2 specifications (Chapter 3)
The R2 specifications are described in Chapter 3.
(5) To find the time for transmitting/receiving data with R2 (Sections 3.8, 3.9)
The R2 transmission delay time and transmission/reception time are explained in
sections 3.8 and 3.9.
(6) To find the procedures for operating R2 (Chapter 4)
The procedures for operating the R2, and the methods of checking the module
state are explained in Chapter 4.
(7) To find how to access the R2 buffer memory (Sections 5.6, 5.7)
The methods of accessing the buffer memory are described in sections 5.6 and
5.7.
(8) To exchange data with an external device (Chapter 6)
The methods of exchanging data with an external device are explained in Chapter
6.
(9) To add a frame when exchanging data (Chapter 7)
The details of the frame, and the methods of adding a frame are explained in
Chapter 7.
(10) To find sample programs (Chapter 9)
Sample programs are described in Chapter 9.
(11) When trouble occurs (Chapter 10)
The error code list and troubleshooting are described in Chapter 10.
"How to Use This Manual" is described by purposes of using CSKP.
Refer to the following and use this manual.

A - 11
Generic Terms and Abbreviations
Unless specially noted, the following generic terms and abbreviations are used in this
manual to explain the AJ65BT-R2 type RS-232-C interface module.
Generic term/abbreviation Details of generic term/abbreviation
R2 Abbreviation for AJ65BT-R2 type RS-232-C interface module.
CC-Link Abbreviation for Control & Communication Link system.
Master module Generic term when using AJ61QBT11, A1SJ61QBT11, AJ61BT11, A1SJ61BT11, QJ61BT11
and QJ61BT11N as the master station.
Remote module Generic term for AJ65BTB - , AJ65BTC - , AJ65BT-64AD, AJ65BT-64DAV and
AJ65BT-64DAI.
External device Generic term for devices such as ID controller, bar code reader and general-purpose personal
computer, connected to R2 for data communication.
GPPW Generic term for model names: SWnD5C-GPPW, SWnD5C-GPPW-A, SWnD5C-GPPW-V
and SWnD5C-GPPW-VA. (“n” included in the model name indicates a number “4” or more.)
AnNCPU Abbreviation of A0J2HCPU, A1SCPU, A1SCPUC24-R2, A1SHCPU, A1SJCPU, A1SJCPU-
S3, ASJHCPU, A1NCPU, A2CCPU, A2CCPUC24, A2CCPUC24-PRF, A2CJCPU, A2NCPU,
A2NCPU-S1, A2SCPU, A2SHCPU and A2FXCPU
AnACPU Abbreviation of A2ACPU, A2ACPU-S1, A2ACPUP21/R21, A2ACPUP21/R21-S1,
A3ACPUP21/R21, A3NCPU and A3ACPU
AnUCPU Abbreviation of A2UCPU, A2UCPU-S1, A2USCPU, A2USCPU-S1, A2USHCPU-S1, A3UCPU
and A4UCPU
QnACPU Abbreviation of Q2ACPU, Q2ACPU-S1, Q2ASCPU, Q2ASCPU-S1, Q2ASHCPU,
Q2ASHCPU-S1, Q3ACPU, Q4ACPU and Q4ARCPU
ACPU Abbreviation of AnNCPU, AnACPU and AnUCPU
QCPU (Q mode) Generic term for Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU and Q25HCPU
QCPU-A (A mode) Generic term for Q02CPU-A, Q02HCPU-A and Q06HCPU-A

A - 12
Definitions and Details of Terms
The definitions and details of terms used in this manual are explained below.
(1) MH
This indicates the buffer memory address of the master station.
(2) R2 H
This indicates the buffer memory address of R2.
(3) Master station
The station that controls the remote station, local station and intelligent device
station.
(4) Intelligent device station
Slave station on CC-Link system that can carry out transient transmission with R2,
etc.
(5) Transient transmission
Function that communicates data with a designated station when access is
requested from the programmable controller CPU, etc.
(6) Buffer memory automatic update function
Function that automatically updates the data between the R2 buffer memory and
master stations' automatic update buffer.
(7) Automatic update buffer
Buffer memory in master station used for the buffer memory automatic update
function in respect to R2.
(8) Registration frame
Row of data targeted for the fixed format section of the statement transmitted and
received between the external device and R2.
The registration frames include the default registration frame registered in the R2,
and the user registration frame registered by the user using EEPROM.
(9) Transmission frame 1 area
Buffer memory address R2 118Hto 119H.
With frame transmission that uses the transmission frame 1 area, a frame can be
added each to the head and end of a random data item when transmitting the
data.
(10) Transmission frame 2 area
Buffer memory address R2 120Hto 185H.
With frame transmission that uses the transmission frame 2 area, up to 100
frames can be added when transmitting the data.

1 - 1
MELSEC-
A
1 OUTLINE
1
1. OUTLINE
This User's Manual explains the features and specifications of the R2 used as the
intelligent device station of the CC-Link, communication with an external device, and
the special specifications, etc.
R2 can exchange data with an external device, such as an RS-232-C connection type
barcode reader, ID controller or general-purpose personal computer.
When a barcode reader is connected
Programmable controller
Master station
R2
Data reception
Barcode reader
Reading!

1 - 2
MELSEC-
A
1 OUTLINE
1.1 Features
(1) Easy communication by using the buffer memory automatic update
function.
This function automatically updates the buffer memory between the R2 and
master station at the timing set in R2.
With this, a program to read and write between the R2 and master station can be
eliminated. As the data can be read and written with just the FROM/TO
command, the program is simplified.
(This can be used with all CPUs.)
*1 The address differs as shown below
for the A Series and Q/QnA Series.
A Series : Bank 2 M 0Hto FFFH
Q/QnA Series : M 2000Hto 2FFFH
R2
Master station
Programable controller CPU
TO
FROM
Buffer memory
(Automatic
update
buffer )
Buffer
memory
Carried out with sequence program
Automatically updated
2)
3)
1)
4)
*1
1) The data to be stored in the R2 buffer memory is written into the master
station's automatic update buffer.
2) The data is automatically written in at the R2 timing.
3) The data is automatically read at the R2 timing.
4) The corresponding master station's buffer memory is read to the data in the
R2 buffer memory to be read out.

1 - 3
MELSEC-
A
1 OUTLINE
(2) Addition of frame during data transmission/reception with external
device
By adding a frame to the head and end, a statement format matching the
specifications of the external device, such as the barcode reader or ID controller,
can be created and communicated.
The frames include those that are set as the default, and the frames that can be
randomly created by the user (user registration frame).
R2 External device such as barcode reader,
ID controller, general-purpose personal computer
Random data
Data transmission
Data reception
Random data
A random frame can be added!
(3) Automatic transmission possible when user-set transmission
conditions are established
When the user-designated transmission conditions (changes in RX, RY, RW,
etc.), are established, data can be automatically transmitted to the external
device.
R2 External device such as barcode reader,
ID controller, general-purpose personal computer
Transmit data after conditions
are established!
Random data
Final frame Head frame
Monitors the status
of RX, RY and RW,
etc.
Master station
(4) Two general-purpose input/output points each provided as a
standard
Two points each are provided for the general-purpose input and output so the
synchronous signal with the barcode reader and ID controller, etc., can be
directly input and output without providing a separate remote I/O module.

1 - 4
MELSEC-
A
1 OUTLINE
MEMO

2 - 1
MELSEC-
A
2 SYSTEM CONFIGURATION
2
2. SYSTEM CONFIGURATION
The system configuration for using R2 is shown explained in this section.
2.1 System configuration
The system configuration for using R2 is shown below.
Up to 26 R2 modules can be connected to one master station.
Remote device station
AJ65BT-R2
(Intelligent device station)
Remote I/O station
RS-232-C cable
Personal computer Bar code reader
External device
1-station occupation
RX/RY 32 points each
RWr/RWw 4 points each
CC-Link master/local station (master station) CC-Link master/local station (local station)
CC-Link dedicated cable

2 - 2
MELSEC-
A
2 SYSTEM CONFIGURATION
2.2 Applicable systems
The master module of the CC-Link system that can use R2, and the programmable
controller CPU that can use the CC-Link dedicated commands are explained in this
section.
(1) Applicable master modules
The following indicates the master modules that can use the R2.
AJ61BT11
A1SJ61BT11
AJ61QBT11
A1SJ61QBT11
QJ61BT11N
QJ61BT11
POINT
When using any of the AJ61BT11, A1SJ61BT11, AJ61QBT11 and A1SJ61QBT11,
use the one that has the following number (9707 B or later) in the DATE field of the
rating plate.
The module that does not have "9707 B" in the DATE field cannot use the R2.
Date of Function version Date of Function version
manufacture manufacture
<Large type>
<Compact type>
(2) Restrictions on use of CC-Link dedicated commands
Depending on the used programmable controller CPU and master module, the
CC-Link dedicated commands may be unusable.
For details of the restrictions, refer to the A Series Master Module User's Manual
(Details) and AnSHCPU/AnACPU/AnUCPU Programming Manual (Dedicated
Instructions).
For program examples using the dedicated commands, refer to Section 9.2.2,
Section 9.2.3, Section 9.3.2 and Section 9.3.3.