Mitsubishi Electric L26CPU-BT User manual

MELSEC-L CC-Link System Master/Local Module
User's Manual
-L26CPU-BT
-L26CPU-PBT
-LJ61BT11

1
SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full attention
to safety to handle the product correctly.
The precautions given in this manual are concerned with this product only. For the safety precautions of the
programmable controller system, refer to the user's manual for the CPU module used.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
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.
WARNING
CAUTION
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in minor or moderate injury or property damage.

2
[Design Precautions]
[Design Precautions]
WARNING
●For the operating status of each station after a communication failure, refer to Page 136, Section 8.2.6
in this manual.
Incorrect output or malfunction due to a communication failure may result in an accident.
●When connecting a peripheral with the CPU module or connecting an external device, such as a
personal computer, with an intelligent function module to modify data of a running programmable
controller, configure an interlock circuit in the program to ensure that the entire system will always
operate safely.
For other forms of control (such as program modification or operating status change) of a running
programmable controller, read the relevant manuals carefully and ensure that the operation is safe
before proceeding.
Especially, when a remote programmable controller is controlled by an external device, immediate
action cannot be taken if a problem occurs in the programmable controller due to a communication
failure.
To prevent this, configure an interlock circuit in the program, and determine corrective actions to be
taken between the external device and CPU module in case of a communication failure.
●Do not write any data to the "system area" of the buffer memory in the intelligent function module.
Also, do not use any "use prohibited" signals as an output signal from the CPU module to the
intelligent function module.
Doing so may cause malfunction of the programmable controller system.
●To set the auto refresh parameter, select the device Y for the remote output (RY) refresh device. If a
device other than Y, such as M and L, is selected, the CPU module holds the device status even after
its status is changed to STOP.
For how to stop a data link, refer to Page 186, Section 8.3.8.
●If a CC-Link dedicated cable is disconnected, the network may be unstable, resulting in a
communication failure of multiple stations.
Configure an interlock circuit in the program to ensure that the entire system will always operate
safely even if communications fail.
Failure to do so may result in an accident due to an incorrect output or malfunction.
CAUTION
●Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Keep a distance of 100mm or more between them.
Failure to do so may result in malfunction due to noise.

3
[Security Precautions]
[Installation Precautions]
[Installation Precautions]
[Wiring Precautions]
WARNING
●To maintain the security (confidentiality, integrity, and availability) of the programmable controller and
the system against unauthorized access, denial-of-service (DoS) attacks, computer viruses, and other
cyberattacks from external devices via the network, take appropriate measures such as firewalls,
virtual private networks (VPNs), and antivirus solutions.
WARNING
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may result in electric shock or cause the module to fail or malfunction.
CAUTION
●Use the programmable controller in an environment that meets the general specifications in the Safety
Guidelines provided with the CPU module or head module.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the
product.
●To interconnect modules, engage the respective connectors and securely lock the module joint levers
until they click.
Incorrect interconnection may cause malfunction, failure, or drop of the module.
●Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.
WARNING
●Shut off the external power supply (all phases) used in the system before wiring.
Failure to do so may result in electric shock or cause the module to fail or malfunction.
●After installation and wiring, attach the included terminal cover to the module before turning it on for
operation.
Failure to do so may result in electric shock.

4
[Wiring Precautions]
[Startup and Maintenance Precautions]
CAUTION
●Use applicable solderless terminals and tighten them within the specified torque range.
If any spade solderless terminal is used, it may be disconnected when a terminal block screw comes
loose, resulting in failure.
●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.
●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.
●Tighten the terminal block screws 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, fire, or
malfunction.
●When disconnecting the cable from the module, do not pull the cable by the cable part.
For the cable with connector, hold the connector part of the cable.
For the cable connected to the terminal block, loosen the terminal screw.
Pulling the cable connected to the module may result in malfunction or damage to the module or
cable.
●Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
●A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
●For the CC-Link system, use dedicated cables that are specified by the manufacturer.
If not, the performance of the CC-Link system is not guaranteed.
Also, the maximum overall cable length and the station-to-station cable length must meet those
specified in Page 25, CHAPTER 3.
If not, normal data transmission is not guaranteed.
WARNING
●Do not touch any terminal while power is on.
Doing so will cause electric shock or malfunction.
●Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal block screws.
Failure to do so may result in electric shock.

5
[Startup and Maintenance Precautions]
[Disposal Precautions]
CAUTION
●Do not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may cause the module to fail or malfunction.
●Tighten the terminal block screws within the specified torque range.
Undertightening can cause drop of the component or wire, short circuit, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
●After the first use of the product (module and terminal block), do not connect/disconnect the product
more than 50 times (in accordance with IEC 61131-2).
Exceeding the limit may cause malfunction.
●Before handling the module, touch a conducting object such as a grounded metal to discharge the
static electricity from the human body.
Failure to do so may cause the module to fail or malfunction.
CAUTION
●When disposing of this product, treat it as industrial waste.

6
CONDITIONS OF USE FOR THE PRODUCT
(1) MELSEC 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 ELECTRIC 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 ELECTRIC USER'S, 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;
• 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.
• 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.
• 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 Electric 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 Electric 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 Electric representative in your region.
(3) Mitsubishi Electric shall have no responsibility or liability for any problems involving programmable controller trouble and
system trouble caused by DoS attacks, unauthorized access, computer viruses, and other cyberattacks.

7
INTRODUCTION
Thank you for purchasing the Mitsubishi MELSEC-L series programmable controllers.
This manual explains the functions and programming required to use the L26CPU-BT/L26CPU-PBT built-in CC-Link
system master/local function and the LJ61BT11 CC-Link system master/local module (hereinafter referred to as the L
series master/local module).
Before using this product, please read this manual and the relevant manuals carefully and develop familiarity with the
functions and performance of the MELSEC-L series programmable controller to handle the product correctly.
When applying the program examples introduced in this manual to an actual system, ensure the applicability and
confirm that it will not cause system control problems.
Please make sure that the end users read this manual.
Remark
●Unless otherwise specified, this manual describes the program examples in which the I/O numbers of X/Y00 to X/Y1F are
assigned for a L series master/local module. I/O numbers must be assigned to apply the program examples introduced in
this manual to an actual system.
For I/O number assignment, refer to the following.
MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)
●Operating procedures are explained using GX Works2. When using GX Developer, refer to Page 461, Appendix
8.

8
COMPLIANCE WITH EMC AND LOW VOLTAGE
DIRECTIVES
(1) Method of ensuring compliance
To ensure that Mitsubishi programmable controllers maintain EMC and Low Voltage Directives when incorporated
into other machinery or equipment, certain measures may be necessary. Please refer to one of the following
manuals.
• MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)
• MELSEC-L CC-Link IE Field Network Head Module User's Manual
• Safety Guidelines
(This manual is included with the CPU module or head module.)
The CE mark on the side of the programmable controller indicates compliance with EMC and Low Voltage
Directives.
(2) Additional measures
To ensure that this product maintains EMC and Low Voltage Directives, please refer to one of the manuals listed
under (1).

9
RELEVANT MANUALS
(1) CPU module user's manual
(2) Head module User's Manual
(3) Operating manual
(4) Others
Manual name
<manual number (model code)> Description
MELSEC-L CPU Module User's Manual (Hardware Design,
Maintenance and Inspection)
<SH-080890ENG, 13JZ36>
Specifications of the CPU modules, power supply modules, display
unit, branch module, extension module, SD memory cards, and
batteries, information on how to establish a system, maintenance and
inspection, and troubleshooting
MELSEC-L CPU Module User's Manual (Function Explanation,
Program Fundamentals)
<SH-080889ENG, 13JZ35>
Functions and devices of the CPU module, and programming
Manual name
<manual number (model code)> Description
MELSEC-L CC-Link IE Field Network Head Module User's Manual
<SH-080919ENG, 13JZ48>
Specifications, procedures before operation, system configuration,
installation, wiring, settings, and troubleshooting of the head module
Manual name
<manual number (model code)> Description
GX Works2 Version1 Operating Manual
(Common)
<SH-080779ENG, 13JU63>
System configuration, parameter settings, and online operations of
GX Works2, which are common to Simple projects and Structured
projects
GX Developer Version 8 Operating Manual
<SH-080373E, 13JU41>
Operating methods of GX Developer, such as programming, printing,
monitoring, and debugging
Manual name
<manual number (model code)> Description
iQ Sensor Solution Reference Manual
<SH-081133ENG, 13JV28>
Operating methods of iQ Sensor Solution, such as programming and
monitoring

CONTENTS
10
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CONDITIONS OF USE FOR THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PACKING LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CHAPTER 1 FEATURES 18
1.1 CC-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.2 Overview of Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
CHAPTER 2 PART NAMES 22
CHAPTER 3 SPECIFICATIONS 25
3.1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2.1 Maximum number of connected stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
3.2.2 Maximum overall cable distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
3.2.3 Ver.1.10 compatible CC-Link dedicated cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3.3 Function List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.4 Mode Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.4.1 Expanded cyclic setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
3.5 I/O Signal List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.6 Buffer Memory List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
CHAPTER 4 PROCEDURE BEFORE OPERATION 50
CHAPTER 5 SYSTEM CONFIGURATION 52
5.1 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.1.1 System configuration of the L series master/local modules . . . . . . . . . . . . . . . . . . . . . . . . . . .52
5.1.2 System configuration on CC-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
5.2 Applicable System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.2.1 Applicable modules and number of connectable modules. . . . . . . . . . . . . . . . . . . . . . . . . . . .54
5.2.2 Restrictions on use with the head module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
5.2.3 Precautions on the system configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
CHAPTER 6 INSTALLATION AND CONNECTION 58
6.1 Module Installation Environment and Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.1.1 Handling precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
6.2 Hardware Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.3 Connecting Modules with Ver.1.10 Compatible CC-Link Dedicated Cables. . . . . . . . . . . . . . . 62
6.3.1 Wiring check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
6.4 T-Branch Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

11
6.4.1 T-branch system configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
6.4.2 T-branch communication specifications list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
6.5 Loop Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.5.1 Loop test 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
6.5.2 Loop test 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
CHAPTER 7 PARAMETER SETTINGS 72
7.1 Parameter Setting Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
7.2 Parameter Setting List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.3 Parameter Settings for a Master Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
7.3.1 Setting method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
7.3.2 Setting details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
7.4 Parameter Settings for a Local Station and Standby Master Station . . . . . . . . . . . . . . . . . . . . 98
7.4.1 Setting method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
7.4.2 Setting details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
7.5 Precautions on the Parameter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
CHAPTER 8 FUNCTIONS 110
8.1 Basic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
8.1.1 Communication with remote I/O stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
8.1.2 Communication with remote device stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
8.1.3 Communication with local stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
8.1.4 Communication with intelligent device stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
8.2 Functions for Improving System Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
8.2.1 Device station cut-off function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
8.2.2 Automatic return function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
8.2.3 Data link status setting in case of master station programmable controller CPU failure . . . .132
8.2.4 Setting the status of input data from a data link faulty station . . . . . . . . . . . . . . . . . . . . . . . .133
8.2.5 Device station refresh/compulsory clear setting in case of programmable controller CPU
STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
8.2.6 Station status at error occurrence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
8.2.7 Standby master function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
8.2.8 Data link start by standby master station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156
8.2.9 Block guarantee of cyclic data per station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
8.2.10 Secured 32-bit data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
8.3 Handy Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
8.3.1 Remote device station initialization procedure registration function . . . . . . . . . . . . . . . . . . .165
8.3.2 Event issuance for the interrupt program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
8.3.3 Automatic CC-Link startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
8.3.4 Reserved station function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
8.3.5 Error invalid station setting function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
8.3.6 Temporary error invalid station setting function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180
8.3.7 Scan synchronous function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182
8.3.8 Data link stop/restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186
8.3.9 Remote I/O station points setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188
8.3.10 Master station duplication error cancel function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

12
CHAPTER 9 DEDICATED INSTRUCTIONS AND PROGRAMMING 191
9.1 Dedicated Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
9.1.1 Dedicated instruction list, applicable devices, and precautions . . . . . . . . . . . . . . . . . . . . . . .191
9.1.2 G(P).RIRD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193
9.1.3 G(P).RIWT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199
9.1.4 G(P).RIRCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205
9.1.5 G(P).RISEND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210
9.1.6 G(P).RIFR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
9.1.7 G(P).RITO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218
9.1.8 G(P).RLPASET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221
9.1.9 G(P).RDMSG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .236
9.2 Precautions on Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
CHAPTER 10 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER
STATION AND REMOTE I/O STATIONS 242
10.1 When Remote I/O Net Mode is Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
10.1.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242
10.1.2 Parameter setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .244
10.1.3 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246
10.1.4 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247
CHAPTER 11 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER
STATION AND REMOTE DEVICE STATIONS 249
11.1 When Remote Net Ver.1 Mode is Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
11.1.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
11.1.2 Parameter setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .251
11.1.3 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255
11.1.4 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .258
11.2 When Remote Net Ver.2 Mode is Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
11.2.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .260
11.2.2 Parameter setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263
11.2.3 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267
11.2.4 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271
11.3 When Remote Net Additional Mode is Used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
11.3.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273
11.3.2 Parameter setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276
11.3.3 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
11.3.4 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284
CHAPTER 12 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER
STATION AND LOCAL STATIONS 286
12.1 When Remote Net Ver.1 Mode is Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
12.1.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286
12.1.2 Setting the master station parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287
12.1.3 Setting the local station parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .289

13
12.1.4 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .291
12.1.5 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
12.2 When Remote Net Ver.2 Mode is Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
12.2.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
12.2.2 Setting the master station parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298
12.2.3 Setting the local station parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300
12.2.4 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304
12.2.5 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .308
12.3 When Remote Net Additional Mode is Used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
12.3.1 Configuring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
12.3.2 Setting the master station parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
12.3.3 Setting the local station parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .313
12.3.4 Creating a program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .317
12.3.5 Performing the data link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .321
CHAPTER 13 COMMUNICATION BETWEEN THE MASTER STATION AND
INTELLIGENT DEVICE STATIONS 323
CHAPTER 14 EXAMPLE OF COMMUNICATION WHEN USING THE HEAD
MODULE 325
14.1 System Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
14.2 Image of Link Scan and Link Refresh by Cyclic Transmission . . . . . . . . . . . . . . . . . . . . . . . . 326
14.3 Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
14.3.1 Setting parameters of the CC-Link IE Field Network master station . . . . . . . . . . . . . . . . . . .327
14.3.2 Setting parameters of the head module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329
14.4 Program Example of CC-Link IE Field Network Master Station . . . . . . . . . . . . . . . . . . . . . . . 332
CHAPTER 15 TROUBLESHOOTING 335
15.1 Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
15.1.1 Flowcharts for troubleshooting by LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .336
15.1.2 Flowcharts for troubleshooting by GX Works2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339
15.2 List of Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
15.2.1 When disconnecting a device station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .345
15.2.2 When cyclic data are faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .353
15.2.3 When transient data are faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356
15.2.4 When operation of the master station is faulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .357
15.3 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
15.3.1 How to check error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .358
15.3.2 Error code list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362
15.4 CC-Link Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
15.4.1 Host monitoring/Other station monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .375
15.4.2 Loop test/Obtain transmission speed setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .378
15.4.3 Status logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .380
15.4.4 Creating a check sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .382
15.4.5 H/W information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .384

14
APPENDICES 387
Appendix 1 Details of the I/O Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
Appendix 2 Buffer Memory Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Appendix 3 Link Special Relays and Registers (SB/SW). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Appendix 3.1 Link special relays (SB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .410
Appendix 3.2 Link special registers (SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .416
Appendix 4 Data Link Processing Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430
Appendix 4.1 Link scan time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .430
Appendix 4.2 Transmission delay time of master station <-> remote I/O station. . . . . . . . . . . . . . .435
Appendix 4.3 Transmission delay time of master station <-> remote device station
(Ver.1 compatible device station) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .437
Appendix 4.4 Transmission delay time of master station <-> remote device station
(Ver.2 compatible device station) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .439
Appendix 4.5 Transmission delay time of master station <-> local station
(Ver.1 compatible device station) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .441
Appendix 4.6 Transmission delay time of master station <-> local station
(Ver.2 compatible device station) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .443
Appendix 4.7 Transmission delay time of master station <-> intelligent device station . . . . . . . . . .445
Appendix 4.8 Processing time for dedicated instructions of master station <-> local station. . . . . .446
Appendix 4.9 Processing time for dedicated instructions of local station <-> local station . . . . . . .450
Appendix 4.10 Processing time for dedicated instructions of master station <->
intelligent device station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .452
Appendix 4.11 Link refresh time of master station/local station . . . . . . . . . . . . . . . . . . . . . . . . . . . . .454
Appendix 5 How to Confirm the Serial No. and Function Version.. . . . . . . . . . . . . . . . . . . . . . . . . . 458
Appendix 6 Added Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459
Appendix 7 Differences Between the L Series Master/Local Module and QJ61BT11N . . . . . . . . . . 460
Appendix 7.1 Specification comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .460
Appendix 7.2 Precautions when utilizing the program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .460
Appendix 8 When Using the GX Developer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
Appendix 8.1 Compatible software package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .461
Appendix 8.2 Operation comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .461
Appendix 9 External Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467
INDEX 469
REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474

15
TERMS
The following shows the terms used in this manual.
Term Description
AnUCPU Another term for the MELSEC-AnU series CPU module
Buffer memory A memory in an intelligent function module, where data (such as setting values and monitoring values)
exchanged with a CPU module are stored
Buffer memory address An address that indicates the storage location of data assigned to the buffer memory in an intelligent
function module
Built-in CC-Link function The abbreviation for the L26CPU-BT/L26CPU-PBT built-in CC-Link system master/local function
Cyclic transmission A function by which data are periodically exchanged among stations on the same system using link
devices (RX, RY, RWw, and RWr)
Data link A generic term for cyclic transmission and transient transmission
Dedicated instruction An instruction that simplifies programming for using functions of intelligent function modules and special
function modules
Device station A generic term for a remote I/O station, remote device station, local station, intelligent device station,
and standby master station
Disconnection A process of stopping data link if a data link error occurs
GX Developer The product name of the software package for the MELSEC programmable controllers
GX Works2
Head module The abbreviation for the LJ72GF15-T2 CC-Link IE Field Network head module
Intelligent device module A generic term for the modules that can perform transient transmission, such as the AJ65BT-R2N
(including local module)
Intelligent device station
A station that exchanges I/O signals (bit data) and I/O data (word data) with another station by cyclic
transmission. This station can perform transient transmission. This station responds to a transient
transmission request from another station. The station also issues a transient transmission request to
another station.
Intelligent function module A MELSEC-Q/L series module that has functions other than input and output, such as an A/D converter
module and D/A converter module
L series master/local module A generic term for the Built-in CC-Link function and LJ61BT11
LCPU Another term for the MELSEC-L series CPU module
Link scan (link scan time) Time required for all stations in a system to transmit data.
The link scan time depends on data volume and the number of transient transmission requests.
Link special register (SW) Word data that indicates the operating status and data link status of modules on the master and local
stations
Link special relay (SB) Bit data that indicates the operating status and data link status of modules on the master and local
stations
LJ61BT11 The abbreviation for the LJ61BT11 CC-Link system master/local module
Local module A generic term for master/local modules when they are used as local station
Local station
A station that performs cyclic transmission and transient transmission with the master station and other
local stations. The station is controlled by programs in the CPU module or other equivalent modules on
the station.
Master module A generic term for master/local modules when they are used as master station
Master station A station that controls the entire system. This station can perform cyclic transmission and transient
transmission with all stations. Only one master station can be used in a system.
Master/local module A generic term for the L series master/local module, QJ61BT11N, A1SJ61BT11, and A1SJ61QBT11
Message transmission A function to communicate data between a master station and device stations when the model names of
device stations are read, the data are backed up/restored, or the dedicated instructions are requested
Offline Status that offline, loop test, or H/W test is selected in the mode setting of network parameter
Online Status that remote net Ver.1 mode, remote net Ver.2 mode, remote net additional mode, or remote I/O
net mode is selected in the mode setting of network parameter

16
Programming tool A generic term for GX Works2 and GX Developer
QCPU Another term for the MELSEC-Q series CPU module
QnACPU Another term for the MELSEC-QnA series CPU module
Remote device station A station that exchanges I/O signals (bit data) and I/O data (word data) with another station by cyclic
transmission. This station cannot perform transient transmission.
Remote I/O net mode A mode used to perform high-speed communications in a system consisting of a master station and
remote I/O station(s) only
Remote I/O station A station that exchanges I/O signals (bit data) by cyclic transmission. This station cannot perform
transient transmission.
Remote input (RX) Bit data input from a device station to the master station (For some areas in a local station, data are
input in the opposite direction.)
Remote module A generic term for AJ65BTB1-16D, AJ65SBTB1-16D, AJ65BT-64AD, AJ65BT-64DAV, AJ65BT-64DAI,
and GT15-J61BT13
Remote net additional mode
A mode used to increase the number of link points by adding a Ver.2-compatible device station to an
existing system consisting of Ver.1-compatible device stations only. Different from the remote net Ver.2
mode, programs in the remote net Ver.1 mode can be used without change because RX/RY/RWr/RWw
data of a Ver.1-compatible device station are stored in the Ver.1-compatible buffer memory areas.
Remote net mode
A mode used to communicate data with all stations (remote I/O station, remote device station, local
station, intelligent device station, and standby master station) in a CC-Link system.
There are three modes: remote net Ver.1 mode, remote net Ver.2 mode, and remote net additional
mode.
Remote net Ver.1 mode A mode used to configure a CC-Link system consisting of a master station and Ver.1-compatible device
station(s) only
Remote net Ver.2 mode
A mode used to configure a CC-Link system containing a Ver.2-compatible device station.
Compared to the remote net Ver.1 mode, the number of link points per station is increased from 128 to
896 for RX/RY, and from 16 to 128 for RWr/RWw.
Remote output (RY) Bit data output from the master station to a device station (For some areas in a local station, data are
output in the opposite direction.)
Remote register (RWr) Word data input from a device station to the master station (For some areas in a local station, data are
input in the opposite direction.)
Remote register (RWw) Word data output from the master station to a device station (For some areas in a local station, data are
output in the opposite direction.)
Remote station A generic term for a remote I/O station and a remote device station
Return A process of restarting data link when a station recovers from an error
Special function module A MELSEC-QnA/A series module that has functions other than input and output, such as an A/D
converter module and D/A converter module
Standby master station A station that serves as a master station to continue communications if the master station fails
Transient transmission A function of communication with another station, which is used when requested by a dedicated
instruction or a programming tool
Ver.1-compatible device station A device station that supports the remote net Ver.1 mode
Ver.2-compatible device station A device station that supports the remote net Ver.2 mode
Term Description

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PACKING LIST
The LJ61BT11 package contains the following items. Before using the product, check if all of them are in the package.
For the packaged items for the L26CPU-BT and L26CPU-PBT, refer to the MELSEC-L CPU Module User's Manual
(Hardware Design, Maintenance and Inspection).
LJ61BT11 module Safety Guidelines
"CAUTION" note
Terminating resistor 110Ω 1/2W × 2 pieces
(Brown-Brown-Brown, gold)
A set of terminating resistors

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CHAPTER 1 FEATURES
1.1 CC-Link
CC-Link is a system where distributed modules, such as I/O modules and intelligent function modules, are connected
using dedicated cables, enabling a CPU module to control the modules.
(1) High-speed communications
On/off information of I/O signals and values can be smoothly exchanged at high speed. This feature allows the
configuration of a variety of systems.
(2) System with reduced wiring
Because modules can be distributed in large equipment, such as conveyor lines and machines, a system with
reduced wiring can be achieved.
(3) Flexible system design
Various CC-Link devices manufactured by partner vendors are available. Therefore, a system can be flexibly
designed according to application.
(4) Configuration of a distributed system
By connecting multiple programmable controllers to a CC-Link system, a simple distributed system can be
configured. The multiple programmable controllers can perform data link with remote stations and intelligent
device stations and can control distributed devices in a CC-Link system.
Between a control panel andBetween a control panel and
equipmentequipment
(I/O control of equipment)(I/O control of equipment)
Between a control panel and
equipment
(I/O control of equipment)
Within a line (Equipment control)
Among production lines (Production control)
Plant level (Information management)
Ethernet
CC-Link IE Controller Network
CC-Link IE Field Network
CC-Link