Mitsubishi MELSEC-L Series User manual

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.
[Design Precautions]
WARNING
●For the operating status of each station after a communication failure in the data link, refer to Page 53,
Section 8.1 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 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" signal as an output signal from the CPU module to the intelligent
function module. Doing so may cause malfunction of the programmable controller system.
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]
[Installation Precautions]
[Installation Precautions]
[Wiring Precautions]
WARNING
●If a communication cable is disconnected, the network becomes unstable, causing communication
failure in multiple stations. Configure an interlock circuit in the program to ensure that the entire
system will always operate safely even if communications fail. Incorrect output or malfunction due to a
communication failure may result in an accident.
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.
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.
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.

3
[Wiring Precautions]
[Startup and Maintenance Precautions]
[Startup and Maintenance Precautions]
[Disposal Precautions]
CAUTION
●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.
●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.
●Use cables specified by CC-Link Partner Association for a CC-Link/LT system. If not, the performance
of the CC-Link/LT system is not guaranteed.
For network wiring, follow the specifications in this manual. 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. Failure
to do so may result in electric shock.
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.
●After the first use of the module, the number of connections/disconnections is limited to 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.

4
CONDITIONS OF USE FOR THE PRODUCT
(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;
i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major
or serious accident; and
ii) where the backup and fail-safe function are systematically or automatically provided outside of
the PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.
(2) The PRODUCT has been designed and manufactured for the purpose of being used in general
industries.
MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT
LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT,
WARRANTY, TORT, PRODUCT LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR
LOSS OR DAMAGE TO PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED OR
USED IN APPLICATION NOT INTENDED OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS,
OR WARNING CONTAINED IN MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY
MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT.
("Prohibited Application")
Prohibited Applications include, but not limited to, the use of the PRODUCT in;
• 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 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.

5
INTRODUCTION
Thank you for purchasing the Mitsubishi MELSEC-L series programmable controllers.
This manual describes the functions and programming of the LJ61CL12 CC-Link/LT master module (hereafter
abbreviated as master 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/Y10 to X/Y1F are
assigned for a master 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)
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 the manual 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 the manual included with
the CPU module or head module.

6
RELEVANT MANUALS
(1) CPU module user's manual
(2) Head module user's manual
(3) Operating manual
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, 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 (common to
Simple project and Structured project) of GX Works2

7
Memo

CONTENTS
8
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CONDITIONS OF USE FOR THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
MANUAL PAGE ORGANIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
PACKING LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CHAPTER 1 CHARACTERISTICS OF CC-Link/LT SYSTEM 13
1.1 CC-Link/LT System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CHAPTER 2 PART NAMES 15
CHAPTER 3 SPECIFICATIONS 17
3.1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.3 I/O Signal List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4 Buffer Memory List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
CHAPTER 4 PROCEDURE BEFORE OPERATION 23
CHAPTER 5 SYSTEM CONFIGURATION 25
5.1 Overall Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Applicable System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3 Precautions for System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
CHAPTER 6 INSTALLATION AND WIRING 32
6.1 Installation Environment and Installation Position of the Module . . . . . . . . . . . . . . . . . . . . . . . 32
6.2 Point Mode Setting and the Number of Occupied I/O Points Setting . . . . . . . . . . . . . . . . . . . . 33
6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables . . . . . . . . .36
6.3.1 Connecting a dedicated flat cable connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.3.2 Connecting a VCTF cable connector/flexible cable connector. . . . . . . . . . . . . . . . . . . . . . . . 40
6.3.3 Using cables of different types together. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.3.4 Connecting terminating resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.5 Checking wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.4 Installing/Removing a Remote Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.5 Last Station Number Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CHAPTER 7 PROGRAMMING 51
7.1 System Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
7.2 Devices Available for Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3 Program Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9
CHAPTER 8 TROUBLESHOOTING 53
8.1 Condition of Each Station in Case of Failure Station Status if an Error Occurs . . . . . . . . . . . .53
8.2 Visual Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
8.3 Troubleshooting of the Master Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
8.3.1 The RUN LED does not turn on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.3.2 The L RUN LED does not turn on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.3.3 The ERR. LED is on or flashing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.3.4 The L ERR. LED is on or flashing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.4 Troubleshooting of Remote I/O Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
8.4.1 The PW LED does not turn on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.4.2 The L RUN LED does not turn on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.4.3 The L ERR. LED is on or flashing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.5 I/O Errors in Remote I/O Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.5.1 Input data cannot be read from a remote I/O station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.5.2 Data cannot be output from a remote I/O station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.6 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
8.7 CC-Link/LT Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.8 Self-loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
APPENDICES 68
Appendix 1 Details of Buffer Memory Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Appendix 2 Check Methods of Serial Number and Function Version . . . . . . . . . . . . . . . . . . . . . . . . 72
Appendix 3 Data Link Processing Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Appendix 4 Difference Between L Series and Q Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Appendix 5 I/O Assignment Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Appendix 6 External Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
INDEX 80
REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

10
MANUAL PAGE ORGANIZATION
In this manual, pages are organized and the symbols are used as shown below.
The following illustration is for explanation purpose only, and should not be referred to as an actual documentation.
*1 The mouse operation example is provided below. (For GX Works2)
The section of
the current page is shown.
The chapter of
the current page is shown.
"" is used for
screen names and items.
[ ] is used for items
in the menu bar and
the project window.
shows operating
procedures.
shows reference
manuals.
shows notes that
requires attention.
shows mouse
operations.*1
shows
reference pages.
shows setting or
operating examples.
Ex.
shows useful
information.
A window selected in the view selection area is displayed.
View selection area
[Online] [Write to PLC...]
Select [Online] on the menu bar,
and then select [Write to PLC...].
Project window [Parameter]
[PLC Parameter]
Select [Project] from the view selection
area to open the Project window.
Menu bar
Ex.
Ex.
In the Project window, expand [Parameter] and
select [PLC Parameter].

11
TERMS
Unless otherwise specified, this manual uses the following terms.
Term Description
Master module The abbreviation for the LJ61CL12 CC-Link/LT master module
Remote I/O module A remote module that exchanges I/O signals (bit data) with an external device
Remote device module A remote module that exchanges I/O signals (bit data) and I/O data (word data) with an external
device, and converts analog data into digital data
Remote module A generic term for a remote I/O module and a remote device module
CPU module The abbreviation for the MELSEC-L series CPU module
Head module The abbreviation for the LJ72GF15-T2 CC-Link IE Field Network head module
Master station A station that controls a data link system.
One master station is required for one system.
Remote I/O station A remote station, such as CL2X8-D1B2 and CL2Y8-TP1B2, that exchanges I/O signals (bit data)
with an external device
Remote device station A remote station that exchanges I/O signals (bit data) and I/O data (word data) with an external
device, and converts analog data into digital data
Remote station A generic term for a remote I/O station and a remote device station.
This station is controlled by the master station.
GX Works2 The product name of the software package for the MELSEC programmable controllers
Intelligent function module A MELSEC-L series module that has functions other than input and output, such as an A/D
converter module and D/A converter module
Dedicated power supply Devices that supply power to a CC-Link/LT system.
One or more devices are required for a system.
Power supply adapter

12
PACKING LIST
The following items are included in the package of this product. Before use, check that all the items are included.
LJ61CL12
LJ61CL12 Before Using the Product

13
CHAPTER 1 CHARACTERISTICS OF CC-Link/LT SYSTEM
1
1.1 CC-Link/LT System
CHAPTER 1 CHARACTERISTICS OF CC-Link/LT
SYSTEM
This chapter describes the features and application of a CC-Link/LT system.
1.1 CC-Link/LT System
A CC-Link/LT system is a wire-saving network system used inside a control panel and equipment, making complex
wiring unnecessary and preventing incorrect wiring.
This system simplifies wiring among sensor, actuator, and controller, providing advanced functionalities such as high-
speed response time.
Partner
product
Master module
Power supply adapter
Remote modules
24VDC
Terminating resistor
Terminating resistor
Y0
General power supply

14
1.2 Features
This section describes features of CC-Link/LT.
(1) Easy connection/disconnection of communication cable
By using dedicated connectors, communication cables can be connected/disconnected with one simple motion.
This allows modules to be easily extended, added, and changed.
Using dedicate flat cables, VCTF cables, and flexible cables leads to reduction in wiring work and cable cost.
(2) No parameter settings
Network parameters for operating a CC-Link/LT system need not to be set.
(3) Simplified programming
CC-Link/LT link devices are assigned for X/Y devices of the CPU module. This allows creating programs using
only X/Y devices without considering the network.
(4) Transmission speed auto-tracking function
Transmission speed setting is required for the master module only and is not required for remote stations.
(5) Slave station cutoff function
Even if a module goes down due to an error, communications among the other modules will continue.
Note if the cable on the trunk line is disconnected, data link among all stations will fail.
(6) Automatic return function
When a disconnected module recovers from an error, it automatically returns to the network and restarts data link.
CPU module
Refresh of X
Refresh of Y
Master station
Link scan
Link scan
Remote station
Input
Output
X
Y
X
Y
X
Y

15
CHAPTER 2 PART NAMES
2
CHAPTER 2 PART NAMES
This chapter describes part names of the master module.
No. Name Description
1) Module joint lever A lever to fix module connection
2)
LED indicator An indicator to check the module status
LED Description
RUN ON: Normal module operation
OFF: Hardware failure
L RUN
<Normal operation>
ON: Data link being executed
OFF: Data link stopped
<In test mode>
ON: Normal self-loopback test
OFF: Self-loopback test error
SD ON: Data being sent
RD ON: Data being received
ERR. ON: Incorrect switch setting
Flashing: Switch setting changed during operation
L ERR.
<Normal operation>
ON: Data link faulty station or station outside control range detected
Flashing: Data link error in all stations
<In test mode>
ON: Self-loopback test error
OFF: Normal self-loopback test
2)
3)
1) 1)
4)
1) 1)5)
6)

16
The setting of the operation setting switch is enabled when the master module is powered off and on or the CPU module is
reset.
If the setting is changed while power is not supplied to the module, the ERR. LED starts flashing.( Page 56, Section
8.3.3)
3)
Operation setting switch A switch to configure settings including the number of occupied I/O points and the
transmission speed of the master module (default: OFF)
4) CC-Link/LT interface connector A connector to connect a communication cable in a CC-Link/LT system
5) Serial number display This display indicates the serial number printed on the rating plate.
6) DIN rail hook A hook to mount modules on a DIN rail
No. Name Description
1024 pts. 512 pts.
Number of
occupied
I/O points
1
2
3
4
5
6
7
8
I/O
POINTS
Transmission
speed setting
B RATE
Point mode
setting
MODE
TEST
*1 When the switch is set to "Setting prohibited", the ERR. LED turns on.
Test mode
16 pts.
OFF
OFF
OFF
32 pts.
ON
OFF
OFF
48 pts.
ON
OFF
OFF
64 pts.
ON
OFF
ON
128 pts.
OFF
ON
OFF
256 pts.
OFF
ON
ON OFF
ON
ON
ON
ON
ON
156kbps 625kbps 2.5Mbps
Setting prohibited*1
OFF
OFF
ON
OFF
ON
Setting prohibited*1
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ONOFF
ON
8-point mode 4-point mode 16-point mode
OFF: ONLINE (Normal operation)
ON : TEST mode (Self-loopback test)

17
CHAPTER 3 SPECIFICATIONS
3
3.1 General Specifications
CHAPTER 3 SPECIFICATIONS
This chapter describes specifications of the master module.
3.1 General Specifications
For the general specifications of the master module, refer to the following.
Safety Guidelines provided with the CPU module or head module

18
3.2 Performance Specifications
(1) Module specifications
The following table lists the performance specifications of the master module.
*1 When the cables other than dedicated flat cables, VCTF cables, and flexible cables are used, performance of CC-
Link/LT is not guaranteed.
*2 Set the number of occupied I/O points using the operation setting switch. ( Page 15, CHAPTER 2).
*3 24VDC power supply is supplied through the dedicated power supply or power supply adapter.
*4 For the specifications of the VCTF cable, refer to the following.
*5 Use the dedicated flat cables and flexible cables accredited by CC-Link Partner Association.
CC-Link Partner Association website: http://www.cc-link.org/
Item Specifications
Point mode 4-point mode 8-point mode 16-point mode
Control
specifications
Maximum link points
(the same I/O address used)
256 points
(512 points)
512 points
(1024 points)
1024 points
(2048 points)
Link points per station
(the same I/O address used)
4 points
(8 points)
8 points
(16 points)
16 points
(32 points)
Link scan
time
32 stations
connected
Points 128 points 256 points 512 points
2.5Mbps 0.7ms 0.8ms 1.0ms
625kbps 2.2ms 2.7ms 3.8ms
156kbps 8.0ms 10.0ms 14.1ms
64 stations
connected
Points 256 points 512 points 1024 points
2.5Mbps 1.2ms 1.5ms 2.0ms
625kbps 4.3ms 5.4ms 7.4ms
156kbps 15.6ms 20.0ms 27.8ms
Communication
specifications
Transmission speed 2.5Mbps/625kbps/156kbps
Communication method BITR method (Broadcastpolling + Interval Timed Response)
Network topology T-branch type
Error control system CRC
Number of connectable modules 64
Remote station number 1 to 64
Installation position of master station End of a trunk line
RAS function Network diagnostics, internal loopback diagnostics,
slave station cutoff function, automatic return function
Connection cable*1 Dedicated flat cable (0.75mm2× 4)*5, VCTF cable*4, flexible cable*5
Number of occupied I/O points*2 16, 32, 48, 64, 128, 256, 512, or 1024 points (I/O assignment: Intelli.)
Internal current consumption (5VDC) 0.16A
24VDC power supply*3
Voltage 20.4 to 28.8VDC
Current consumption 0.03A
Current on startup 0.07A
Weight 0.12kg
(Extract from JIS C 3306)
Type No. of
cores
Conductor
Insulator
thickness
Sheath
thickness
Conductor
resistance
(20°C)
Nominal cross
section
Configuration
No. of wires/wire
diameter
Outside
diameter
Vinyl cabtyre
round code 40.75mm230/0.18mm 1.1mm 0.6mm 1.0mm 25.1Ω/km