Mitsubishi Melsec-L, LJ61CL12 User Manual

SAFETY PRECAUTIONS

(Read these precautions before using this product.)

Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly. 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".

WARNING

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.

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.

[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.

[Design 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.

[Design Precautions]

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.

[Installation Precautions]

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.

[Installation Precautions]

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.

[Wiring Precautions]

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.

[Wiring 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.

[Startup and Maintenance Precautions]

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.

[Startup and Maintenance 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.

● 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.

[Disposal Precautions]

CAUTION

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

CONDITIONS OF USE FOR THE PRODUCT

(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;

i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or serious accident; and ii) where the backup and fail-safe function are systematically or automatically provided outside of the PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.

(2) The PRODUCT has been designed and manufactured for the purpose of being used in general

industries. MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT, WARRANTY, TORT, PRODUCT LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT INTENDED OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS, OR WARNING CONTAINED IN MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT. ("Prohibited Application") Prohibited Applications include, but not limited to, the use of the PRODUCT in;

• 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.

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.

RELEVANT MANUALS

(1) CPU module user's manual

Manual name

MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

<SH-080890ENG, 13JZ36>

MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)

<SH-080889ENG, 13JZ35>

(2) Head module user's manual

Manual name

MELSEC-L CC-Link IE Field Network Head Module User's Manual

<SH-080919ENG, 13JZ48>

(3) Operating manual

Manual name

<manual number (model code>)

GX Works2 Version1 Operating Manual (Common)

<SH-080779ENG, 13JU63>

Description

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

Functions and devices of the CPU module, and programming

Description

Specifications, procedures before operation, system configuration, installation, wiring, settings, and troubleshooting of the head module

Description

System configuration, parameter settings, and online operations (common to Simple project and Structured project) of GX Works2

Memo

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

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

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.

"" is used for screen names and items.

The chapter of

shows operating procedures.

the current page is shown.

shows mouse operations.

[ ] is used for items in the menu bar and the project window.

Ex.

shows setting or operating examples.

shows reference manuals.

shows reference pages.

*1 The mouse operation example is provided below. (For GX Works2)

The section of the current page is shown.

shows notes that requires attention.

shows useful information.

Menu bar

Ex.

A window selected in the view selection area is displayed.

Ex.

View selection area

[Online] [Write to PLC...]

Select [Online] on the menu bar, and then select [Write to PLC...].

Project window

[PLC Parameter]

Select [Project] from the view selection area to open the Project window.

In the Project window, expand [Parameter] and select [PLC Parameter].

[Parameter]

TERMS

Unless otherwise specified, this manual uses the following terms.

Ter m 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

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

Remote I/O station

Remote device station

Remote station

GX Works2 The product name of the software package for the MELSEC programmable controllers

Intelligent function module

Dedicated power supply

Power supply adapter

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

A station that controls a data link system.

One master station is required for one system.

A remote station, such as CL2X8-D1B2 and CL2Y8-TP1B2, that exchanges I/O signals (bit data)

with an external device

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

A generic term for a remote I/O station and a remote device station.

This station is controlled by the master station.

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

Devices that supply power to a CC-Link/LT system.

One or more devices are required for a system.

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

CHAPTER 1 CHARACTERISTICS OF 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.

Master module

Terminating resistor

Power supply adapter

Partner product

General power supply

24VDC

Terminating resistor

Remote modules

1.1 CC-Link/LT System

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.

CPU module

Refresh of X

Refresh of Y

Master station

Link scan

Remote station

Input

Output

(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.

CHAPTER 2 PART NAMES

This chapter describes part names of the master module.

1) 1)

1) 1)5)

No. Name Description

1) Module joint lever A lever to fix module connection

LED indicator An indicator to check the module status

LED Description

RUN

L RUN

2) SD ON: Data being sent

RD ON: Data being received

ERR.

L ERR.

ON: Normal module operation

OFF: Hardware failure

ON: Data link being executed

OFF: Data link stopped

ON: Normal self-loopback test

OFF: Self-loopback test error

ON: Incorrect switch setting

Flashing: Switch setting changed during operation

ON: Data link faulty station or station outside control range detected

Flashing: Data link error in all stations

ON: Self-loopback test error

OFF: Normal self-loopback test

No. Name Description

Operation setting switch

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

A switch to configure settings including the number of occupied I/O points and the

transmission speed of the master module (default: OFF)

Number of

occupied I/O points

I/O

POINTS

3 Transmission

speed setting

B RATE

Point mode

setting

MODE

Test mode

TEST

*1 When the switch is set to "Setting prohibited", the ERR. LED turns on.

16 pts.

32 pts.

48 pts.

64 pts.

128 pts.

256 pts.

OFF

156kbps 625kbps 2.5Mbps

OFF

8-point mode 4-point mode 16-point mode

OFF

OFF: ONLINE (Normal operation) ON : TEST mode (Self-loopback test)

OFF

1024 pts.

512 pts.

OFF

Setting prohibited

ONONON

ONOFF

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)

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

CHAPTER 3 SPECIFICATIONS

3.1 General Specifications

3.2 Performance Specifications

(1) Module specifications

The following table lists the performance specifications of the master module.

Item Specifications

Point mode 4-point mode 8-point mode 16-point mode

Maximum link points

(the same I/O address used)

Link points per station

(the same I/O address used)

Points 128 points 256 points 512 points

Control

specifications

Link scan

time

Transmission speed 2.5Mbps/625kbps/156kbps

Communication method BITR method (Broadcastpolling + Interval Timed Response)

Network topology T-branch type

Error control system CRC

Communication

specifications

Number of occupied I/O points*2

Internal current consumption (5VDC) 0.16A

24VDC power supply

Weight 0.12kg

Number of connectable modules 64

Remote station number 1 to 64

Installation position of master station End of a trunk line

RAS function

Connection cable

*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. ( *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.

Typ e

Vinyl cabtyre round code

*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/

32 stations

connected

64 stations

connected

Voltage 20.4 to 28.8VDC

Current consumption 0.03A

Current on startup 0.07A

No. of

cores

2.5Mbps 0.7ms 0.8ms 1.0ms

625kbps 2.2ms 2.7ms 3.8ms

156kbps 8.0ms 10.0ms 14.1ms

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

Nominal cross

section

0.75mm

256 points

(512 points)

4 points

(8 points)

Network diagnostics, internal loopback diagnostics,

slave station cutoff function, automatic return function

Dedicated flat cable (0.75mm2 × 4)*5, VCTF cable*4, flexible cable

16, 32, 48, 64, 128, 256, 512, or 1024 points (I/O assignment: Intelli.)

512 points

(1024 points)

8 points

(16 points)

1024 points

(2048 points)

16 points

(32 points)

Page 15, CHAPTER 2).

(Extract from JIS C 3306)

Conductor

Configuration

No. of wires/wire

diameter

30/0.18mm 1.1mm 0.6mm 1.0mm 25.1Ω/km

Outside

diameter

Insulator

thickness

Sheath

thickness

Conductor

resistance

(20°C)

CHAPTER 3 SPECIFICATIONS

(2) Network wiring specifications

The following table lists the network wiring specifications of CC-Link/LT.

Item Specifications Remarks

Transmission speed 2.5Mbps 625kbps 156kbps ⎯

Station-to-station distance No limit ⎯

Maximum number of modules on a

branch line

Maximum length of the trunk line 35m 100m 500m

T-branch interval No limit ⎯

Maximum length of a branch line 4m 16m 60m The cable length per branch line

Overall branch line length 15m 50m 200m Total length of all branch lines

8 ⎯

The cable length between terminating

resistors at both ends (The branch line

length is not included.)

T-branch connection

Master station

Branch

Terminating

resistor

*1 The branch line length includes the length of *2. (The maximum length of the branch line and overall branch line length

*3 For the terminating resistor connection method, refer to

A trunk line can be partitioned using up to 10 dedicated connectors.

line length

Branch line length

include the length of *2.)

Master station

Trunk line length (The branch line length is not included.)

T-branch interval length

Power

supply

adapter

Remote

station

Remote

station

Station-to-station distance

Remote

station

Partitioned points

Remote

station

Remote

station

Remote

station

Remote

station

Remote

station

Remote

station

Remote

station

Page 46, Section 6.3.4.

Terminating

resistor

Trunk line Branch line

3.2 Performance Specifications

Terminating

resistor

Power supply

adapter

Remote

station

Remote

station

Remote

station

Remote

station

Remote

station

Remote

station

Terminating

resistor

Trunk line Branch line

3.3 I/O Signal List

This section describes I/O signals of the master module for the CPU module.

Input signals (X) are assigned to the remote input area, and output signals (Y) are assigned to the remote output area.

No special I/O signal is required to operate the master module.

I/O assignments vary depending on the point mode setting.

"n" in the following tables indicates the start I/O number of the master module.

When the start I/O number of the master module is "X/Y30"

Ex.

Xn0 to XnF→X30 to X3F

Yn0 to YnF→Y30 to Y3F

If the number of occupied I/O points is set larger than the maximum number of link points in the 4-point

mode or 8-point mode, the excessive I/O points cannot be used.

When the point mode is in the 4-point mode and the number of occupied I/O points is set to 1024

Ex.

According to the setting, the master module can occupy 1024 I/O points in the CPU module. However, the number of

actual link points is 256 (the maximum link points when the 4-point mode is set). The rest of I/O points (768) cannot

be used.

● If remote station numbers are duplicated, the duplicating stations may cause malfunction (incorrect input/output). Check that the remote station numbers are not duplicated before powering on the system.

● A remote station may occupy multiple station numbers depending on the point mode setting and the number of I/O points of the remote station. When using a remote station having the number of I/O points of eight or more, check that the station number of the remote station is not duplicated with that of the next station.

(1) In 4-point mode

The following tables list I/O signals in 4-point mode.

Input number

XnF to Xn0 Station No.4 Station No.3 Station No.2 Station No.1

•••

X(n+F)F to X(n+F)0 Station No.64 Station No.63 Station No.62 Station No.61

Output number

YnF to Yn0 Station No.4 Station No.3 Station No.2 Station No.1

•••

Y(n+F)F to Y(n+F)0 Station No.64 Station No.63 Station No.62 Station No.61

F E D C B A 9 8 7 6 5 4 3 2 1 0

Remote input (X)

•••

Remote output (Y)

•••

(2) In 8-point mode

The following tables list I/O signals in 8-point mode.

CHAPTER 3 SPECIFICATIONS

Input number

XnF to Xn0 Station No.2 Station No.1

•••

X(n+1F)F to X(n+1F)0 Station No.64 Station No.63

Output number

YnF to Yn0 Station No.2 Station No.1

•••

Y(n+1F)F to Y(n+1F)0 Station No.64 Station No.63

F E D C B A 9 8 7 6 5 4 3 2 1 0

(3) In 16-point mode

The following tables list I/O signals in 16-point mode.

Input number

XnF to Xn0 Station No.1

•••

X(n+3F)F to X(n+3F)0 Station No.64

F E D C B A 9 8 7 6 5 4 3 2 1 0

Remote input (X)

•••

Remote output (Y)

•••

Remote input (X)

•••

Output number

YnF to Yn0 Station No.1

•••

Y(n+3F)F to Y(n+3F)0 Station No.64

F E D C B A 9 8 7 6 5 4 3 2 1 0

Remote output (Y)

•••

3.3 I/O Signal List

3.4 Buffer Memory List

The following table lists the buffer memory areas of the master module.

For details, refer to Page 68, Appendix 1.

Address

DEC HEX

0 to 3

4 to 7

8 to 11

12 to 15

21 to 31

96 to

to 3

to 7

to B

to F

to 1F

Remote station connection information Read-only

Faulty station information Read-only

Remote I/O error information Read-only

Detailed error information Readable/Writable

External switch information Read-only

Operating status information Read-only

Data link stop/restart instruction Write-only

Data link last station information Read-only

Detailed remote station information (Station No.1)

Detailed remote station information (Station No.64)

Item Availability

Use prohibited

*1 Do not write data to the use prohibited area. Doing so may cause errors.

⎯

Read-onlyto to to

⎯

The buffer memory areas can be checked using GX Works2 or a display unit.

• Using GX Works2

GX Works2 Version1 Operating Manual (Common)

• Using a display unit

MELSEC-L CPU Module User’s Manual (Function Explanation, Program Fundamentals)

CHAPTER 4 PROCEDURE BEFORE OPERATION

This chapter describes a procedure from module installation to a data link start.

Start

Checkbox

Module connection

Connect the master module.

Remote module installation

Install a remote module into a control panel or equipment.

Switch setting

Set the switches of the master module. Point mode setting Number of occupied I/O points setting Transmission speed setting

Wiring

Connect each module with connection cable. Set terminating resistors at both ends of the trunk line.

Page 25, Section 5.1

User's manual for the remote module used

Page 15, CHAPTER 2

Page 33, Section 6.2

Page 36, Section 6.3

Power supply connection

Connect a dedicated power supply or power supply adapter.

To the next page

Checkbox

From the previous page

System power-on

After checking the following items, power on the system. Modules are correctly installed. A voltage input to the dedicated power supply or power supply adapter is 24VDC. The CPU module is in the STOP status. The remote station numbers are not duplicated.

Operation check using the LEDs

Check the data link status using the LEDs of the master module. When the data link is normal : The L RUN LED is on. When the data link is faulty : The L ERR. LED is on or flashing. When the setting is incorrect : The ERR. LED is on.

Module connection status check

Check the connection status of each module using: Buffer memory CC-Link/LT diagnostics

Page 68, Appendix 1 (1)

Page 63, Section 8.7

System operation

Operate the system.

End

● If remote station numbers are duplicated, the duplicating stations may cause malfunction (incorrect input/ output).

Check that the remote station numbers are not duplicated before powering on the system.

● A remote station may occupy multiple station numbers depending on the point mode setting and the number of I/O points

of the remote station. When using a remote station having the number of I/O points of eight or more, check that the station number of the remote station is not duplicated with that of the next station.

● When changing the setting of the operation setting switch of the master module or a remote station while the system is

on, power off and on the system.

CHAPTER 5 SYSTEM CONFIGURATION

This chapter describes a CC-Link/LT system configuration.

5.1 Overall Configuration

To one master station, up to 64 remote stations can be connected when the conditions on network wiring specifications

are met. ( Page 19, Section 3.2 (2))

(1) System configuration using the master module

(a) When connected to a CPU module

Display unit

(optional)

Power supply module CPU module Master module

(b) When connected to a head module

Power supply module Head module Master module END cover

END cover

5.1 Overall Configuration

(2) CC-Link/LT system configuration

Master module

Terminating resistor

Power supply adapter

General power supply

24VDC

Terminating resistor

Partner product

● Remote stations need not to be connected in station number order.

● Remote station numbers are not necessarily consecutive. (Leaving any station number out does not cause a data link

error.)

Remote modules

5.2 Applicable System

This section describes a MELSEC-L series system using a master module.

(1) Number of connectable modules

For the number of connectable modules, refer to the following.

MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

MELSEC-L CC-Link IE Field Network Head Module User's Manual

The number of connectable modules depends on the number of I/O points of the CPU module used and the

number of occupied I/O points setting for the master module.

(2) Compatible software version

GX Works2 is required for executing CC-Link/LT diagnostics and configuring intelligent function module switches.

GX Developer cannot be used.

CHAPTER 5 SYSTEM CONFIGURATION

Software Version

GX Works2 Version 1.62Q or later

5.3 Precautions for System Configuration

(1) Master module position

Install the master module on either end of the trunk line.

Since T-branch connection is available, the master module can be apparently installed on any position on the

trunk line. However, the trunk line length is defined as the length between the terminating resistors.

Master station

Terminating resistor

Branch line length

*2 *2 *2

Remote

station

Remote

station

Remote

station

Remote

station

Terminating

resistor

Branch line length

Trunk line length

Power

supply

adapter

Remote

station

Remote

station

Station-to-station distance

Remote

station

Remote

station

Remote

station

Trunk line Branch line

Remote

station

5.2 Applicable System

*1 The branch line length includes the length of *2. (The maximum length of the branch line and overall branch line length

include the length of *2.)

*3 For the terminating resistor connection method, refer to

Page 46, Section 6.3.4.

(2) Number of branch line levels

Up to two branch line levels can be configured in a CC-Link/LT system.

Three or more branch line levels cannot be configured.

Remote

station

Remote

station

The third branch line level cannot be configured.

Remote

station

Trunk line Branch line

(3) Installation conditions of a dedicated power supply and a power supply

adapter

The installation conditions of the power supplies depend on the connected devices and wiring length.

For the conditions, refer to the user’s manual for the dedicated power supply or the power supply adapter.

Always connect a dedicated power supply or a power supply adapter to the trunk line. (Connection to branch lines is not allowed.)

(4) Preventing incorrect input/output from remote I/O modules

To prevent incorrect input/output from remote I/O modules, design a system with considering the following:

(a) At power-on and power-off

Turn on the power of remote I/O modules (dedicated power supply or power supply adapter), then start data

link.

Also, stop data link then turn off the power of remote I/O modules.

Data link start Data link stop

Master module

(Data link status)

Remote I/O module

(Power status)

Executed

Stopped

OFF

CHAPTER 5 SYSTEM CONFIGURATION

(b) At momentary power failure of remote I/O modules

If momentary power failure occurs in the power supplied to remote I/O modules (24VDC), incorrect input may

occur.

•Cause

The hardware of the remote I/O module converts the supplied power of 24V DC into 5V DC inside the

module and uses it for its own operation.

The hardware of a remote I/O module internally converts 24VDC (module power supply) into 5VDC.

If momentary power failure occurs in a remote I/O module, (Time until the internal power of the remote I/O

module (5VDC) turns off) > (Time until the input module turns off) is met.

Therefore, if data are refreshed within the time shown in 1) in the figure below, incorrect input may occur

(This situation especially occurs when the input response time is set to high-speed response).

Remote I/O module (Module power supply and input external power supply)

Remote I/O module (Inside: 5VDC)

Input (Xn)

When the input external power supply is turned off, the input (Xn) turns off after the input module turns off.

When the input external power supply is turned on, the input (Xn) turns on after the input module turns on.

5.3 Precautions for System Configuration

• Measures against incorrect input

From the same power source, supply power to the power supply module, the stabilized power supply and

the external supply power for input detection.

Use the same power supply for a power supply module, stabilized power supply, and input external power

supply (AC input).

DC input

CPU

module

Power supply

Stabilized

power supply

Stabilized

power supply

24VDC

Master module

Power supply

adapter

Remote I/O module

Input external power supply

AC input

CPU

module

Power supply

Stabilized

power supply

24VDC

Master module

Power supply

adapter

Remote I/O module

Input external power supply

(5) Duplication of a remote station number

• If remote station numbers are duplicated, the duplicating stations may cause malfunction (incorrect input/

output).

Check that the remote station numbers are not duplicated before powering on the system.

Remote

station

Station No. 1

Station No. 1 duplicated

Remote

station

Station No. 1

CHAPTER 5 SYSTEM CONFIGURATION

• A remote station may occupy multiple station numbers depending on the point mode setting and the number

of I/O points of the remote station. When using a remote station having the number of I/O points of eight or

more, check that the station number of the remote station is not duplicated with that of the next station.

8-point remote stations are numbered as station numbers 1 and 2

Ex.

• Point mode setting: 8-point mode (8 points/station)

8-point remote

station

(1 station occupied)

Station (1) (8 points)

Station No. 1 Station No. 2

(1 station occupied)

Station (2) (8 points)

Station No. not duplicated

• Point mode setting: 4-point mode (4 points/station)

8-point remote

station

(2 stations occupied)

Station (1)

Station (2)

(4 points)

Station No. 1 Station No. 2

Station No. of station (2) duplicated

(2 stations occupied)

Station (2)

(4 points)

8-point remote

station

8-point remote

station

Station (3) (4 points)

5.3 Precautions for System Configuration

(6) Connecting a remote station for CC-Link to CC-Link/LT

A CC-Link remote station cannot be connected to the master module. Doing so may cause system malfunction.

(7) Connecting a remote station for CC-Link/LT to CC-Link

A CC-Link/LT remote station cannot be connected to the master station on CC-Link. Doing so may cause system

malfunction.

CHAPTER 6 INSTALLATION AND WIRING

This chapter describes installation and wiring of the master module.

6.1 Installation Environment and Installation Position of the

Module

For precautions for installation environment and installation position of the module, refer to the following.

MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

MELSEC-L CC-Link IE Field Network Head Module User's Manual

CHAPTER 6 INSTALLATION AND WIRING

6.2 Point Mode Setting and the Number of Occupied I/O

Points Setting

This section describes concepts of the point mode setting and the number of occupied I/O points setting required for

system configuration.

The number of points that the master station can control per remote station occupying one station is set for the point

mode setting.

Three point modes are available: 4-point mode, 8-point mode, and 16-point mode. Even if the number of occupied I/O

points setting is the same, the number of controllable remote stations varies depending on the point mode setting.

Note when connecting a remote device station, use 16-point mode.

(1) Simple setting

The following table lists simple setting for the point mode and the number of occupied I/O points.

According to the number of I/O points of the remote station, set the point mode and the number of occupied I/O

points with reference to the following table.

Number of I/O points of remote

station

256 points or less

257 to 512 points 512 points 8-point mode

513 to 1024 points 1024 points 16-point mode

Number of occupied I/O points

setting of the master module

16 points

32 points

48 points

64 points

128 points

256 points

Point mode setting of the master

module

4-point mode

6.2 Point Mode Setting and the Number of Occupied I/O Points Setting

(2) Advanced setting

The following table lists the point mode and the number of occupied I/O points settings considering the number of

unused points and the number of occupied stations.

• Even if the number of occupied I/O points is the same, the number of controllable remote stations varies

depending on the point mode setting.

The following table lists the number of connectable stations according to the number of occupied I/O points

and point mode settings.

Number of occupied I/O

points setting

Point

mode

setting

4-point mode 4 stations 8 stations 12 stations 16 stations 32 stations 64 stations 64 stations 64 stations

8-point mode 2 stations 4 stations 6 stations 8 stations 16 stations 32 stations 64 stations 64 stations

16-point mode 1 stations 2 stations 3 stations 4 stations 8 stations 16 stations 32 stations 64 stations

If the number of occupied I/O points is set larger than the maximum number of link points in the 4-point mode or 8-point mode, the excessive I/O points cannot be used.

When the point mode is in the 4-point mode and the number of occupied I/O points is set to 1024

Ex.

According to the setting, the master module can occupy 1024 I/O points in the CPU module. However, the number of

actual link points is 256 (the maximum link points when the 4-point mode is set). The rest of I/O points (768) cannot

be used.

16 pts. 32 pts. 48 pts. 64 pts. 128 pts. 256 pts. 512 pts. 1024 pts.

• Even if the same remote module is used, the number of occupied stations varies depending on the point

mode setting.

When 4-point mode is set for a 16-point module, for example, four stations are occupied. In the same way,

two stations are occupied in 8-point mode and one station is occupied in 16-point mode.

• The optimal mode depends on the number of points of remote modules. The number of points of remote

modules, which are used most in the system, should be set for the point mode. This usually minimizes the

number of unused points.

A setting example is as follows.

The system including: 2-point remote station: 1, 4-point remote station: 4, 8-point remote station: 1, 16-

Ex.

point remote station: 1

Master station

Station (1)

4 input points

Station (2)

8 input points

CL1X4-D1B2 CL2X8-D1B2

4-point mode (4 pts./station) Number of occupied I/O points: 48

Total no. of stations : 12

X/Y0

X/Y10

X/Y20

X/Y23

(1) 4 pts.

(2) 8 pts.

(3) 4 pts.

(4) 2 pts.

Empty: 2 pts.

(5) 16 pts.

(6) 4 pts.

(7) 4 pts.

Empty: 4 pts.

1 station

2 stations

1 station

4 stations

1 station

Station (3)

4 output points

CL1Y4-T1B2

Station (4)

2 output points

CL1Y2-T1D2S

4 output points

CL1Y4-R1B2

8-point mode (8 pts./station) Number of occupied I/O points: 64

Total no. of stations : 8

(1) 4 pts.X/Y0

Empty: 4 pts.

(2) 8 pts.

X/Y10

(3) 4 pts.

Empty: 4 pts.

(4) 2 pts.

Empty: 6 pts.

X/Y20

(5) 16 pts.

X/Y30 X/Y30

(6) 4 pts.

Empty: 4 pts.

(7) 4 pts.

Empty: 4 pts.

1 station

X/Y10

1 station

X/Y20

2 stations

1 station

X/Y40

Station (5)

16 input points

CL2X16-D1M1V

Station (6)

4 I/O points

Station (7)

16-point mode (16 pts./station) Number of occupied I/O points: 128

CL1XY8-DT1B2

Total no. of stations : 7

(1) 4 pts.X/Y0

Empty: 12 pts.

(2) 8 pts.

Empty: 8 pts.

(3) 4 pts.

Empty: 12 pts.

(4) 2 pts.

Empty: 14 pts.

1 station

X/Y50

X/Y60

X/Y70

(5) 16 pts.

(6) 4 pts.

Empty: 12 pts.

(7) 4 pts.

Empty: 12 pts.

Empty: 16 pts.

1 station

CHAPTER 6 INSTALLATION AND WIRING

I/O number assignment is described using the I/O assignment table for 8-point mode in Page 75, Appendix 5.

The following table lists the I/O number assignment when 8-point mode is set and 64 points is set for the number

of occupied I/O points in the system shown in the example on the previous page.

Station

No.

Station

No.

CL2X16-D1M1V

(Two stations occupied)

CL2X16-D1M1V

(Two stations occupied)

CL1XY8-DT1B2

CL1Y4-R1B2

Model Model

CL1X4-D1B2

CL2X8-D1B2

CL1Y4-T1B2

CL1Y2-T1D2S

Input Output OutputInput

6.2 Point Mode Setting and the Number of Occupied I/O Points Setting

6.3 Connecting Modules with Cables Connecting Modules

Using Connection Cables

This section describes how to connect modules using connection cables in a CC-Link/LT system.

• The cables can be wired regardless of station number order.

• Install the master module on either end of the trunk line.

Connect a terminating resistor on the master module side within 20cm from the master module.

• Connect terminating resistors to the both ends of the trunk line of CC-Link/LT without fail.

Connect terminating resistors to the both ends of the trunk line in a CC-Link/LT system.

• For contact information on connection cables, connectors, and terminating resistors, visit:

CC-Link Partner Association website: http://www.cc-link.org/

Calculate the number of required connectors with reference to the following example.

When using a dedicated flat cable for a trunk line and VCTF cables for branch lines

Ex.

Master

module

1)-1

4)-1

1)-2

1)-6

1)-4

1)-5

Power supply

adapter

Remote

General

power supply

(24VDC)

module

Trunk line (Dedicated flat cable)

Branch line (Dedicated flat cable)

Branch line (VCTF cable)

2)-1

2)-2

1)-71)-3

Remote

module

1)-8

1)-9

3)-1

3)-2

1)-10

2)-3

Remote module

2)-4

Remote module

2)-5

Remote module

2)-6

VCTF cable connector

Dedicated flat cable connector

Terminating resistor (CL9-TERM)

1)-13

1)-11

1)-12

1)-14

The number of required connectors are as follows:

1) Dedicated flat cable connectors (number of ): 19 ( 1)-1 to 1)-19)

2) VCTF cable connectors (number of ): 8 ( 2)-1 to 2)-8)

3) Terminal blocks (number of ): 2 ( 3)-1 and 3)-2)

4) Terminating resistors (number of ): 2 ( 4)-1 and 4)-2)

1)-15

1)-16

Remote module

20cm or less

Remote module

1)-17

1)-19 4)-2

2)-7

2)-8

1)-18

Module

Remote module

Commercially available terminal block

with cable

CHAPTER 6 INSTALLATION AND WIRING

6.3.1 Connecting a dedicated flat cable connector

This section describes how to connect a dedicated flat cable connector.

(1) Components

The components are shown below.

Component 1: Cover Component 2: Body Component 3: Dedicated flat cable

Orange

6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables

6.3.1 Connecting a dedicated flat cable connector

(2) Procedures

The procedures are as illustrated below.

(a) Processing cable end

1) Correctly place the end of the dedicated flat cable in the cover. (Check that the position of the orange part is correct.)

Orange

Note 1) This orientation is incorrect.

Orange

2) Close the cover so that the flat cable may be held between both sides of the cover.

Orange

Note 2) If the orange part is visible through the notch window on the front cover, open the cover and correct the wiring.

Orange

3) Assemble the cover with the body and press them using pliers.

Orange

4) Check that all of four latches are engaged. Press-fitting is completed.

Orange

(b) Processing for T-branch connection

5) Cut the cover edge at the two roots using a nipper and remove the edge.

Cut

6) Attach the cover to the part from where T-branch connection is to be built.

Orange

7) Follow the steps 3) and 4) shown above.

Orange

CHAPTER 6 INSTALLATION AND WIRING

8) Connect dedicated flat cable connectors from where T-branch connection is to be built as illustrated below.

Dedicated flat cable connector

Trunk line

Branch line

6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables

6.3.1 Connecting a dedicated flat cable connector

6.3.2 Connecting a VCTF cable connector/flexible cable connector

This section describes how to connect a VCTF cable connector/flexible cable connector.

(1) Components

The components are shown below.

Component 1: Cover

For VCTF cable connection: Green For flexible cable connection: Yellowish green

Green

Black

White

Red

Inside

of the

cover

Component 2: Body (light blue)

Component 3: VCTF cable/flexible cable

Red

White

Black

Green

Cable colors and the

corresponding signals

Signal name

+24V

DA DB

24G

Cable color

Red White Black

Green

(2) Procedures

The procedures are as illustrated below.

(a) Processing cable end

CHAPTER 6 INSTALLATION AND WIRING

1) Place each wire end of the VCTF cable/flexible cable on the guide having the same color as the wire.

Red

White

Black

Green

4cm

2) Close the cover so that the VCTF cable/flexible cable may be held between both sides of the cover. When the wiring is correct, the green wire is visible through the notch window. If a red, white, or black wire is visible through the window, open the cover and correct the wiring. Incorrect wiring may cause failure of the module.

Green: Correct wiring Red, white, or black: Incorrect wiring

3) Assemble the cover with the body and press them using pliers.

4) Check that all of four latches are engaged. Press-fitting is completed.

6.3.2 Connecting a VCTF cable connector/flexible cable connector

6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables

(b) Building T-branch connection (VCTF cable/flexible cable)

5)-1 When using a terminal block for T-branch connection When connecting a VCTF cable/flexible cable to a terminal block, connect the wires so that the wire colors match with the corresponding terminals.

VCTF cable/ flexible cable

DADB24G

+24V

*1 When connecting a dedicated flat cable to a terminal block (e.g. Using a VCTF cable for the trunk line and dedicated flat cables for branch lines), match "+24V", "DA", "DB", and "24G" printed on the dedicated flat cable with the corresponding colors of the VCTF cable (flexible cable) as shown in the table to right. Split the dedicated flat cable so that "+24V", "DA", "DB", and "24G" cables may be independent.

VCTF cable/ flexible cable

Red White Black Green

Dedicated flat

VCTF cable/flexible cable

cable

+24V Red

DA White

DB Black

24G Green

color

5)-2 When using a connector for T-branch connection After removing the sheath by 7cm or more, branch the cable using a connector in the same way as the T-branch connection method for a dedicated flat cable.

VCTF cable/flexible cable (trunk line)

VCTF cable/flexible cable (branch line)

VCTF

VCTF cable/flexible cable connector

cable/flexible cable connector

(Trunk line: Dedicated flat cable, branch line: VCTF cable/flexible cable)

6) Branch the cable using a connector in the same way as the T-branch connection method for a dedicated flat cable.

Dedicated flat cable

(trunk line)

VCTF cable/flexible cable (branch line)

VCTF cable/flexible cable connector

Dedicated flat cable connector

(d) Processing the VCTF cable connector/flexible cable connector (for terminating

resistor)

7) Cut the cover edge at the two roots using a nipper and remove the edge.

Cut

8) Place the cover at the point where the terminating resistor is to be connected.

9) Follow the steps (a) 3) and 4).

(3) Precautions for use of flexible cables

Prevent an excessive load from being applied to the connector when moving flexible cables.

6.3.3 Using cables of different types together

This section describes use of cables of different types.

(1) Trunk line

Cables of different types cannot be used together.

(2) Branch line

Cable types can be different only if the cables are used on different branches.

When a module with cable (e.g. CL1Y2-T1D2S) is used, however, cables of different types can be used together

by shortening the length of the dedicated flat cable to 20cm or less. (Refer to the figures below.)

Remote module

CHAPTER 6 INSTALLATION AND WIRING

Remote module

Trunk line (VCTF cable)

Branch cable (Dedicated flat cable)

Branch cable (VCTF cable)

Module with cable

20cm or less

Remote module

Trunk line (VCTF cable)

Branch cable (Dedicated flat cable)

Branch cable (VCTF cable)

6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables

6.3.3 Using cables of different types together

(3) System configuration example of when a dedicated flat cable is used for the

trunk line

Master

module

Remote

module

Remote module

Module with cable

20cm or less

Remote

module

Commercially available terminal block

Power supply

adapter

General

power supply

(24VDC)

Remote

module

Remote

module

Trunk line (Dedicated flat cable)

Branch line (Dedicated flat cable) Branch line (VCTF cable/

flexible cable)

Remote

module

Remote

module

Remote

module

VCTF/flexible cable connector

Dedicated flat cable connector

Terminating resistor (CL9-TERM)

(4) System configuration example of when a VCTF cable is used for the trunk line

Connecting terminating resistor on master module side

Terminating resistor (CL9-TERM)

Master

module

VCTF cable

connector

(for master module)

Connection

VCTF cable

connector

VCTF cable

Remote module

Module with cable

20cm or less

Remote

module

Commercially available terminal block

Power supply

adapter

General

power supply

(24VDC)

Remote

module

Remote

module

Trunk line (VCTF cable)

Branch line (Dedicated flat cable) Branch line (VCTF cable/

flexible cable)

Remote

module

Remote

module

Remote

module

VCTF/flexible cable connector

Dedicated flat cable connector

Terminating resistor (CL9-TERM)

*1 For a processing procedure for the VCTF cable connector (for terminating resistor), refer to Page 40, Section

6.3.2.

CHAPTER 6 INSTALLATION AND WIRING

(5) System configuration example of when a flexible cable is used for the trunk

line

Connecting terminating resistor on master module side

Terminating resistor (CL9-TERM)

Master

module

Connection

Flexible cable

connector

(for master module)

Power supply

adapter

Remote

module

General

power supply

(24VDC)

Trunk line (flexible cable)

Branch line (Dedicated flat cable)

Branch line (VCTF cable/ flexible cable)

*1 For a processing procedure for the flexible cable connector (for terminating resistor), refer to Page 40, Section

6.3.2.

Flexible cable

(for terminating resistor)

Remote

module

connector

Flexible cable

Remote

module

Remote

module

Remote

module

VCTF/flexible cable connector

Dedicated flat cable connector

Terminating resistor (CL9-TERM)

Remote

module

Remote

module

Module with cable

20cm or less

Remote

module

Commercially available terminal block

6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables

6.3.3 Using cables of different types together

6.3.4 Connecting terminating resistors

Use the CL9-TERM (gray) for the terminating resistors.

For a system configuration using dedicated flat cables only, the CL9-RYVK (black) can also be used.

Note that terminating resistors of the same model must be used for both ends of the trunk line.

(1) Connecting a terminating resistor on the master module side

The following figure illustrates how to connect a terminating resistor.

Connect the terminating resistor within 20cm from the master module using a connector.

Within 20cm

Terminating resistor

Master module

(2) Connecting a terminating resistor on the end of the trunk line

The following figure illustrates how to connect a terminating resistor to the opposite end of the master module.

Terminating resistor

6.3.5 Checking wiring

Check wiring between remote I/O stations and external devices.

For the master module, the start I/O number is set to X/Y10 and the point mode is set to 8-point mode.

Ex.

LJ61CL12

Master module

(X/Y10-, 8-point mode)

CHAPTER 6 INSTALLATION AND WIRING

Power

supply

adapter

CL2X8-D1B2 Input module

(Station No.1,

number of occupied

stations: 1

X10

CL2Y8-TP1B2 Output module

(Station No.2,

number of occupied

stations: 1

Y18

(a) Checking wiring between the input module and the external device

1. Turn on the switch corresponding to X10 of the external device connected to the input module on

station No. 1.

2. Monitor devices using GX Works2 or the display unit. When X10 is on, this indicates that the input

module and the external device are normally connected.

For device monitoring procedures, refer to the following.

• Using GX Works2

GX Works2 Version 1 Operating Manual (Common)

• Using a display unit

MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)

6.3 Connecting Modules with Cables Connecting Modules Using Connection Cables

6.3.5 Checking wiring

(b) Checking wiring between the output module and the external device

1. Forcibly turn on Y18 by device test using GX Works2 or the display unit.

2. When the lamp corresponding to Y18 of the external device turns on, this indicates that the output

module and the external device are normally connected.

For device test procedures, refer to the following.

• Using GX Works2

GX Works2 Version 1 Operating Manual (Common)

• Using display unit

MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)

6.4 Installing/Removing a Remote Station

A remote station on CC-Link/LT cannot be installed or removed while the CPU module is in the RUN status.

Install or remove a remote station in either of the following status:

• The system is powered off.

• The CPU module is in the STOP status (The RUN/STOP/RESET switch of the CPU module is set to STOP).

● If a remote station is installed/removed while the CPU module is in the RUN status, it may cause system failure or incorrect input/output.

● When a remote station is installed while the CPU module is in the STOP status, whether the remote station performs data link or not can be checked by any of the following operations:

• Execute CC-Link/LT diagnostics.

• Check that the bit of Remote station connection information (buffer memory address: 0 to 3 (Un/G0 to 3) corresponding to the remote station is on.

• Check that the PW LED and L RUN LED of the remote station are on.

CHAPTER 6 INSTALLATION AND WIRING

6.5 Last Station Number Setting

The last station number is set to perform data link up to the last remote station in connection with the network and not

to perform data link with unconnected stations.

This setting is optional but useful to optimize link scan time.

When 16-point mode is set, the number of occupied I/O points is set to 128 points, and the last remote

Ex.

station in connection with the network is numbered as "5"

By setting "5" as the last station number, the link scan time is optimized.

Not connected

Remote

station

No.1

Data link range when the last station number is set to 5

Remote

station

No.2

Remote

station

No.3

Data link range when the last station number is not set

Remote

station

No.4

Remote

station

No.5

Remote

station

No.6

(1) Setting procedure

Set the last station number using the intelligent function module switch setting of GX Works2.

Parameter [PLC Parameter] [I/O Assignment] button

Select "DEC".

Remote

station

No.7

Remote

station

No.8

6.5 Last Station Number Setting

Set the intelligent function module switches in 16-bit data.

When the last station number is not set, Switch 1 is set to "0" (default), and data link is performed among stations

within the range of the number of connectable stations.

Intelligent

function

Setting item

module switch

Set the last station number among stations that perform data link.

This setting disables data link with unconnected stations, reducing link refresh

time.

When a station number exceeding the number of connectable stations is set,

Switch 1

Switch 2 No setting (blank)

Switch 3 No setting (blank)

Switch 4 No setting (blank)

Switch 5 No setting (blank)

Last station number

setting

the setting is ignored.

Page 33, Section 6.2)

(

1 to 64

When 0 or more than 64 is set, data link is performed among stations within the

number of connectable stations.

Do not set Switch 2 through Switch 5. Doing so may result in malfunction.

CHAPTER 7 PROGRAMMING

This chapter describes the programming of the master module.

7.1 System Configuration Example

The system in which two remote I/O stations are connected is used as an example in this section.

Number of occupied I/O points : 16 points Transmission speed : 2.5 Mbps Point mode : 8-point mode

Master station

CHAPTER 7 PROGRAMMING

LJ61CL12

Terminating resistor

Power supply adapter

General

power supply

24VDC

Remote I/O station

(No.1)

CL2X8-D1C3V

input module (X10 to X17)

Remote I/O station

(No.2)

CL2Y8-TP1C2V

output module

(Y18 to Y1F)

Terminating resistor

7.1 System Configuration Example

7.2 Devices Available for Users

The following table lists the devices available for users.

Device Description

X0 CC-Link/LT control start contact

X1 Data link stop instruction contact

X2 Data link restart instruction contact

Y0 Data link error output

Y1 Error (all stations) output

Y2 Remote I/O error output

Y3 Remote station connection error output

M2 Control start flag

D0 Operating status information

D1 Remote station connection information

D2 Detailed error information

7.3 Program Example

The following is a program example.

Read Operating status information.

Read Remote station connection information and Detailed error information after completion of initial communication.

Remote station connection error output

Control start

Data link error output

Error (all stations) output

Remote I/O error output

Data link stop instruction

Data link restart instruction

CHAPTER 8 TROUBLESHOOTING

This chapter describes troubleshooting of CC-Link/LT.

8.1 Condition of Each Station in Case of Failure Station

Status if an Error Occurs

The following table lists station status if an error occurs.

Data link status

The CPU module on the master

station is faulty and stopped (data

link stopped).

A remote station is faulty due to

an error such as data link error

(data link continued).

Power of a remote station is shut

off (data link continued).

*1 Although external data are input (The input LED turns on.), the data are not sent to the master station. *2 The status depends on the output hold setting of the remote station.

Remote input Remote output Input Output

Input data from the

faulty remote

station are cleared.

Input data from the

de-energized

remote station are

cleared.

Master station Remote station

Maintained Maintained

Continued

Depends on

external signals.

Maintained/OFF

All OFF

8.1 Condition of Each Station in Case of Failure Station Status if an Error Occurs

8.2 Visual Check

Check the following:

(1) Checking LEDs of the master station

Check that no error occurs in the master module using LEDs by the following procedure.

For LED indication and module status, refer to Page 15, CHAPTER 2.

1. Power on the system and check the RUN LED of the master station.

If the RUN LED does not turn on, troubleshoot with reference to the following.

Page 55, Section 8.3.1

2. Check the L RUN LED of the master station.

If the L RUN LED of the master station does not turn on, troubleshoot with reference to the following.

Page 55, Section 8.3.2

3. Check the ERR. LED of the master station.

If the ERR. LED of the master station is on or flashing, troubleshoot with reference to the following.

Page 56, Section 8.3.3

4. Check the L ERR. LED of the master station.

If the L ERR. LED of the master station is on or flashing, troubleshoot with reference to the following.

Page 57, Section 8.3.4

(2) Checking LEDs of a remote I/O station

Check that no error occurs in a remote I/O station using LEDs by the following procedure.

For troubleshooting of a remote device station, refer to the user's manual for the remote device station used.

1. Check the PW LED of the remote I/O station.

If the PW LED of the remote I/O station does not turn on, troubleshoot with reference to the following.

Page 59, Section 8.4.1

2. Check the L RUN LED of the remote I/O station.

If the L RUN LED of the remote I/O station does not turn on, troubleshoot with reference to the following.

Page 60, Section 8.4.2

3. Check the L ERR. LED of the remote I/O station.

If the L ERR. LED of the remote I/O station is on or flashing, troubleshoot with reference to the following.

Page 60, Section 8.4.3

(3) Checking communication cables and wiring

Check that no error occurs in the communication cables, the connectors and terminating resistors are securely

connected, and the system is correctly wired. ( Page 36, Section 6.3)

CHAPTER 8 TROUBLESHOOTING

8.3 Troubleshooting of the Master Station

This section describes troubleshooting of the master station.

8.3.1 The RUN LED does not turn on

Check the following:

Check item Action

The module is incorrectly connected. Disconnect the module and connect it again.

Change the system configuration so that the internal current

The internal current consumption of the entire system

exceeds the rated output current of the power supply

module.

If the RUN LED does not turn on even after the above actions are taken, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

consumption may be within the rated output current.

For how to calculate current consumption of the entire

system, refer to the following.

MELSEC-L CPU Module User's Manual (Hardware

Design, Maintenance and Inspection)

8.3.2 The L RUN LED does not turn on

Check the following:

Check item Action

The CPU module has just exited from reset status.

The test mode switch is on.

Data link stop (bit 0) of Data link stop/restart instruction

(buffer memory address: 19 (Un/G19)) is on.

The number of occupied I/O points set using the switch

exceeds the number of occupied I/O points of the CPU

module.

*1 When Data link stop and Data link restart are simultaneously turned on, the instruction of Data link stop takes priority.

Turn off Data link stop before turning on Data link restart.

If the L RUN LED does not turn on even after the above actions are taken, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

It takes time for the L RUN LED to turn on after the CPU

module exits from reset status. Wait for a while.

• When the L ERR. LED is on, troubleshoot with reference

to the following.

Page 57, Section 8.3.4)

(

• When the L ERR. LED is not on, please consult your local

Mitsubishi service center or representative, explaining a

detailed description of the problem.

Turn off the Data link stop then turn on Data link restart (bit

15).

Correct the setting then power off and on the system or reset

the CPU module.

Page 15, CHAPTER 2)

(

8.3.1 The RUN LED does not turn on

8.3 Troubleshooting of the Master Station

8.3.3 The ERR. LED is on or flashing

Check the following:

(1) The ERR. LED is on

Check item Action

The transmission speed setting switch is incorrectly set.

The point mode setting switch is incorrectly set.

If the ERR. LED remains on even after the above actions are taken, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the

problem.

(2) The ERR. LED is flashing

When the operation setting switch is switched after power-on, the ERR. LED starts flashing. Reset the switch to

the status before the switching.

If the ERR. LED remains flashing even after that, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the

problem.

Correct the setting then power off and on the system or reset

the CPU module.

Page 15, CHAPTER 2)

(

Correct the setting then power off and on the system or reset

the CPU module.

Page 33, Section 6.2)

(

8.3.4 The L ERR. LED is on or flashing

Check the following:

(1) The L ERR. LED is on

Check item Action

Please consult your local Mitsubishi service center or

The test mode switch is on.

A remote station is connected outside the control range.

A faulty remote station is detected by Faulty station

information (buffer memory address: 4 to 7 (Un/G4 to 7)).

Page 68, Appendix 1)

(

A communication cable is incorrectly wired.

*1 Check for short circuit, reverse connection, disconnection, excessive pressure, terminating resistors, overall cable

distance, branch line distance (overall branch line length, maximum branch line length), and surrounding environment such as a noise.

representative, explaining a detailed description of the

problem.

Remove the remote station connected outside the control

range.

Increase the number of occupied I/O points.

Set a greater value for the last station number.

After taking the above actions, power off and on the system

or reset the CPU module.

Troubleshoot the faulty remote station.

Remote I/O station:

Remote device station

Correct the wiring.

( Page 36, Section 6.3)

CHAPTER 8 TROUBLESHOOTING

Page 59, Section 8.4

User's manual for the remote device station used

If the L ERR. LED remains on even after the above actions are taken, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the

problem.

8.3 Troubleshooting of the Master Station

8.3.4 The L ERR. LED is on or flashing

(2) The L ERR. LED is flashing

Check item Action

Error (all stations) (bit 1) of Detailed error information (buffer

memory address: 16 (Un/G16)) is not on.

A 24VDC supply voltage is outside the specified range.

A faulty remote station is detected by Faulty station

information (buffer memory address: 4 to 7 (Un/G4 to 7)).

(

Page 68, Appendix 1)

A communication cable is incorrectly wired.

*1 Measure a voltage using check terminals on the terminating resistor.

Please consult your local Mitsubishi service center or

representative, explaining a detailed description of the

problem.

Reduce the supply voltage within the specified range.

Troubleshoot the faulty remote station.

Remote I/O station:

Remote device station

User's manual for the remote device station used

Correct the wiring.

( Page 36, Section 6.3)

Page 59, Section 8.4

Check terminal 24G

*2 Check for short circuit, reverse connection, disconnection, excessive pressure, terminating resistors, overall cable

distance, branch line distance (overall branch line length, maximum branch line length), and surrounding environment such as a noise.

Check terminal 24V

If the L ERR. LED remains flashing even after the above actions are taken, the possible cause is a hardware

failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the

problem.

CHAPTER 8 TROUBLESHOOTING

8.4 Troubleshooting of Remote I/O Stations

This section describes troubleshooting of remote I/O stations.

For troubleshooting of a remote device station, refer to the user's manual for the remote device station used.

8.4.1 The PW LED does not turn on

Check the following:

Check item Action

The communication cable connected to the power supply is

incorrectly wired.

A communication cable is connected to the LINK connector

of the dedicated power supply or power supply adapter.

A 24VDC supply voltage is outside the specified range.

*1 Check for short-circuit, reverse connection, disconnection, and excessive pressure.

*2 Measure a voltage using check terminals on the terminating resistor.

Correct the wiring.*

Connect the cable to the LINK/POWER connector.

Reduce the supply voltage within the specified range.

Check terminal 24G

If the PW LED does not turn on even after the above actions are taken, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

Check terminal 24V

8.4 Troubleshooting of Remote I/O Stations

8.4.1 The PW LED does not turn on

8.4.2 The L RUN LED does not turn on

Check the following:

After changing a remote station number, power off and on the system.

Check item Action

After data link is established, the transmission speed setting

of the master station was changed.

A communication cable is incorrectly wired.

The station number setting switch is incorrectly set.

A station number is set outside the control range of the

master station.

Power off and on the system.

Correct the wiring.

( Page 36, Section 6.3)

Correct the station number with meeting the following:

• The number is 1 to 64.

• The ones digit is 0 to 9.

• Do not set the number using the output hold setting switch

After changing a remote station number, power off and on

the system.

• Check that the numbers of remote stations occupied by

• Check that station numbers set on remote stations are

After changing a remote station number, power off and on

the system.

and response speed setting switch.

the master station are 1 to 64.

within the control range of the master station.

The operation setting switch of the master station is

incorrectly set.

*1 Check for short circuit, reverse connection, disconnection, excessive pressure, terminating resistors, overall cable

distance, branch line distance (overall branch line length, maximum branch line length), and surrounding environment such as a noise.

Correct the setting. (

After correcting the setting, power off and on the system or

reset the CPU module.

Page 15, CHAPTER 2)

If the L RUN LED does not turn on even after the above actions are taken, the possible cause is a hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

8.4.3 The L ERR. LED is on or flashing

Check the following:

Check item Action

Switch setting is changed after power-on. Return the switch setting to the status before the switching.

A communication cable is incorrectly wired.

*1 Check for short circuit, reverse connection, disconnection, excessive pressure, terminating resistors, overall cable

distance, branch line distance (overall branch line length, maximum branch line length), and surrounding environment such as a noise.

Correct the wiring.

( Page 36, Section 6.3)

If the L ERR. LED remains on or flashing even after the above actions are taken, the possible cause is a hardware

failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

CHAPTER 8 TROUBLESHOOTING

8.5 I/O Errors in Remote I/O Stations

This section describes troubleshooting on I/O errors in remote I/O stations.

8.5.1 Input data cannot be read from a remote I/O station

Check the following:

Check item Action

The master station does not recognize the relevant remote

I/O station.

Page 63, Section 8.7)

(

The input LED of the relevant remote I/O station is not on.

An incorrect remote input address is specified. Correct the address.

A station number is duplicated.

*1 Check for short circuit, reverse connection, disconnection, excessive pressure, terminating resistors, overall cable

distance, branch line distance (overall branch line length, maximum branch line length), and surrounding environment such as a noise.

If input data cannot be read from the remote I/O station even after the above actions are taken, the possible cause is a

hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

Correct the wiring of the communication cable.

( Page 36, Section 6.3)

Correct the wiring between the remote I/O station and the

external device.

Correct the station number.

After changing a remote station number, power off and on

the system.

8.5 I/O Errors in Remote I/O Stations

8.5.1 Input data cannot be read from a remote I/O station

8.5.2 Data cannot be output from a remote I/O station

Check the following:

Check item Action

The master station does not recognize the relevant remote

I/O station.

(

Page 63, Section 8.7)

The output LED of the relevant remote I/O station is not on. Correct the address.

Wiring between the remote I/O station and the external

device is incorrect.

*1 Check for short circuit, reverse connection, disconnection, excessive pressure, terminating resistors, overall cable

distance, branch line distance (overall branch line length, maximum branch line length), and surrounding environment such as a noise.

If data cannot be output from the remote I/O station even after the above actions are taken, the possible cause is a

hardware failure.

Please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

Correct the wiring of the communication cable.

( Page 36, Section 6.3)

Correct the wiring.

8.6 Error Codes

If the master module detects an error, the error details are stored in Detailed error information (buffer memory address:

16 (Un\G16)).

For error details, refer to Page 68, Appendix 1.

CHAPTER 8 TROUBLESHOOTING

8.7 CC-Link/LT Diagnostics

After all modules are connected using connection cables, whether the modules are ready for data link or not can be

checked.

(1) Monitoring the own station

Monitor the own station (station connected to GX Works2) status.

[Diagnostics] [CC-Link Diagnostics]

(a) Monitored items

Connecting Station

Information

Item Description

Connecting Station Indicates that the master station is being monitored.

Displays data link status.

Data Link Status

Operation Status

Occupied I/O Points

Point Mode

Data Link End Station No. Displays the last station number in data link range.

Transmission Speed Displays the value set using the operation setting switch.

• Data linking

• Data linking stop

• Initial communication incomplete

Displays the operating status of the own station.

•Normal

• Data link error

Displays the values set using the operation setting switch.

8.7 CC-Link/LT Diagnostics

(2) Monitoring other stations

Monitor other stations (stations not connected to GX Works2) status.

[Diagnostics] [CC-Link Diagnostics] "Target module"

(a) Monitored items

Item Description

Station No. Displays the start station number of each station.

Number of Occupied Station Displays the number of occupied stations.

Selected Station Information

Station Type

Opening the "Selected Station Error Information" tab can check data link status of the selected remote module.

Displays a station type.

• Input Module Station

• Output Module Station

• I/O Module Station

• Device Station

(3) H/W information

The operating status and the setting status of the master module are displayed.

(a) Operating procedure

[Diagnostics] [System Monitor]

1. Select the master module in "Main block" and click

the button.

CHAPTER 8 TROUBLESHOOTING

2. Click the button.

Error history display is not available for CC-Link/LT.

3. H/W information is displayed.

8.7 CC-Link/LT Diagnostics

(b) Monitored items

Item Description

Monitor Status Displays the current monitoring status.

Model Name Displays the module model.

Displays the function version.

Module

Display Format

H/W LED Information

H/W SW Information

Product Information

000010000000000-A

Function version A

Switch the display format of "H/W LED Information" and

"H/W SW Information".

Displays the LED status as shown below.

b15 b0b1b2b3b4to

Empty

Displays the value stored in External switch information

(buffer memory address: 17 (Un/G17)).

(

Page 69, Appendix 1 (5))

RUN L RUN ERR. L ERR.

0: OFF 1: ON

8.8 Self-loopback Test

This test checks whether the module alone operates normally or not.

Follow the steps shown below.

Connect cables and supply 24VDC through a dedicated power supply or a power supply adapter.

After checking the following items, power on the system.

Modules are correctly installed. A voltage is applied from the power supply. The CPU module is in the STOP status.

CHAPTER 8 TROUBLESHOOTING

Start

To set a test mode, turn on SW8, operation setting switch of the master module.

Power on the system.

Reset the CPU module.

End

[Test results]

LED indication

RUN ERR. SD RD L RUN L ERR.

When normal ON OFF *1 *1 ON OFF ⎯

When faulty

ON OFF OFF OFF OFF ON

OFF OFF OFF OFF OFF OFF

ON ON OFF OFF OFF OFF

*1 Dimly lights or is flashing.

The hardware is faulty. Replace the module.

Correct the operation setting switch

configuration.

Action

8.8 Self-loopback Test

APPENDICES

Appendix 1 Details of Buffer Memory Areas

This section describes the details of buffer memory areas.

(1) Remote station connection information (buffer memory address: 0 to 3 (Un\G0

to 3))

Remote stations on the network is detected, and connection status of the stations is stored.

Address (decimal) b15 b14 b13 to b2 b1 b0

0 Station No.16 Station No.15 Station No.14 to Station No.3 Station No.2 Station No.1

1 Station No.32 Station No.31 Station No.30 to Station No.19 Station No.18 Station No.17

2 Station No.48 Station No.47 Station No.46 to Station No.35 Station No.34 Station No.33

3 Station No.64 Station No.63 Station No.62 to Station No.51 Station No.50 Station No.49

0: No remote station connected

1: Remote station connected

(2) Faulty station information (buffer memory address: 4 to 7 (Un\G4 to 7))

The data link status of remote stations is stored.

Address (decimal) b15 b14 b13 to b2 b1 b0

4 Station No.16 Station No.15 Station No.14 to Station No.3 Station No.2 Station No.1

5 Station No.32 Station No.31 Station No.30 to Station No.19 Station No.18 Station No.17

6 Station No.48 Station No.47 Station No.46 to Station No.35 Station No.34 Station No.33

7 Station No.64 Station No.63 Station No.62 to Station No.51 Station No.50 Station No.49

0: Normal

1: Data link error

(3) Remote I/O error information (buffer memory address: 8 to 11 (Un\G8 to 11))

The remote I/O error status of remote stations during data link is stored.

For error details, refer to the manual for each remote station.

Address (decimal) b15 b14 b13 to b2 b1 b0

8 Station No.16 Station No.15 Station No.14 to Station No.3 Station No.2 Station No.1

9 Station No.32 Station No.31 Station No.30 to Station No.19 Station No.18 Station No.17

10 Station No.48 Station No.47 Station No.46 to Station No.35 Station No.34 Station No.33

11 Station No.64 Station No.63 Station No.62 to Station No.51 Station No.50 Station No.49

0: No remote I/O error

1: Remote I/O error

APPENDICES

(4) Detailed error information (buffer memory address: 16 (Un\G16))

The details of errors detected by the master station are stored. If "Error of station outside control range" is

detected, b3 will be latched. Writing "1" to b3 will clear the "Error of station outside control range" information.

Bit Name Description

b0 Data link error

b1 Error (all stations)

b2 Remote I/O error

b4 Point mode setting error

b14 to b7 Empty ⎯

b15 Hardware failure

Error of station outside

control range

Transmission speed

setting error

Switching during

operation

0: Data link normal

1: One or more data link faulty stations

0: One or more normal data link stations

1: All stations faulty

0: No remote I/O error

1: One or more faulty remote I/O stations

0: No error

1: Remote station connected to the station whose number is greater than the last

station number in refresh range

0: Normal

1: Point mode setting switch configured outside the range

0: Normal

1: Transmission speed setting switch configured outside the range

0: No switching

1: Switched

0: Normal

1: Failure identified by self-loopback test

(5) External switch information (buffer memory address: 17 (Un\G17))

The switch status of the number of occupied I/O points setting, transmission speed setting, point mode setting,

and test mode is stored.

Bit Name Description

b2 to b0

b4, b3 Transmission speed setting

b6, b5 Point mode setting

b7 Test mode

b15 to b8 Empty ⎯

Number of occupied I/O

points setting

Status of operation setting switch SW3 to SW1

000: 16 pts. 001: 32 pts. 010: 48 pts. 011: 64 pts. 100: 128 pts. 101: 256 pts.

110: 512 pts. 111:1024 pts

Status of operation setting switch SW5 and SW4

00: 156kbps 01: 625kbps 10: 2.5Mbps 11: Setting not allowed

Status of operation setting switch SW7 and SW6

00: 8-point mode 01: 4-point mode 10: 16-point mode

11: Setting not allowed

Status of the operation setting switch SW8

0: Normal

1: Self-loopback test being executed

0: Switch off

1: Switch on

Appendix 1 Details of Buffer Memory Areas

(6) Operating status information (buffer memory address: 18 (Un\G18))

The operating status of the master module is stored.

Bit Name Description

b0 Data link status

b1 Initial communication status

b15 to b2 Empty ⎯

0: Data link stopped

1: Data link being executed

0: Initial communication not complete

1: Initial communication completed

(7) Data link stop/restart instruction (buffer memory address: 19 (Un\G19))

Data link stop and data link restart are controlled. When data link stop and data link restart are simultaneously

requested, the stop request takes priority.

Bit Name Description Initial value

b0 Data link stop

b14 to b1 Empty ⎯⎯

b15 Data link restart

0: Data link stop not requested

1: Data link stop requested

0: Data link restart not requested

1: Data link restart requested

(8) Data link last station information (buffer memory address: 20 (Un\G20))

The last station number of data-link-available remote stations is stored.

Bit Name Description

b6 to b0 Data link last station number The last station number of data-link-available remote stations is stored.

b15 to b7 Empty ⎯

● The value stored in this buffer memory area depends on the number of occupied I/O points setting, point mode setting, and last station number setting configured using intelligent function module switches.

● When a remote station for which a station number greater than the value stored in this buffer memory area is set is connected, "Error of station outside control range" occurs.

APPENDICES

(9) Detailed remote station information (buffer memory address: 32 to 95 (Un\G32

to 95))

Information on each remote station is stored.

Bit Name Description

b2 to b0

b5 Remote device station flag

b7 Input filter setting

b8 Output clear/hold setting

b15 to b9 Empty ⎯

*1 For I/O modules, the number of input or output points is stored.

For the CL1XY2-DT1D5S, 1 point is stored.

Ex.

*2 b4 and b3 indicate the presence of the remote input signal and remote output signal of the connected remote station.

For a remote I/O station used for input and output, both b4 and b3 store 1. For the one used for input, b4 and b3

Ex.

store 1 and 0, respectively.

*3 For a module having two or more occupied stations, only the bit of the buffer memory area in the start station will turn on.

Number of I/O points

Output flag

Input flag

Start station flag

000: 1 pt. 001: 2 pts. 010: 4 pts. 011: 8 pts. 100: 16 pts.

0: No output

1: Data being output

0: No input

1: Data being input

0: Remote I/O station

1: Remote device station

0: Station other than the start station

1: Start station

0: Standard input (No setting)

1: High-speed input

0: Clear (No setting)

1: Hold

Appendix 1 Details of Buffer Memory Areas

Appendix 2 Check Methods of Serial Number and

Function Version

For check methods of the serial number and the function version of the master module, refer to the following.

MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

MELSEC-L CC-Link IE Field Network Head Module User's Manual

Appendix 3 Data Link Processing Time

This section describes the link scan time, transmission delay time, and automatic return time.

(1) Link scan time

The link scan time of CC-Link/LT is described as below.

[Link scan time (LS)]

LS = a + (b × N) × c [µs]

a: Constant

b: Constant

c: Constant

N: Last station number

Transmission speed 2.5Mbps 625kbps 156kbps

a 22 88 353

4-point mode 46 41 37

Link scan time (ms)

8-point mode 56 51 47

16-point mode 76 71 67

c 0.4 1.6 6.4

Link scan time (At 2.5Mbps)

2.5

2.0

1.5

1.0

0.5

0204060

16-point mode 8-point mode

4-point mode

Number of stations

APPENDICES

(2) Transmission delay time

The transmission delay time (time that data reaches to a destination) is described as below.

(a) Master station ← Remote station (Input)

The following formula calculates the time after a signal is input to a remote station until the CPU module device

(X) turns on (off).

[Calculation formula]

SM × 2 + (2 - n)

SM: Sequence program scan time of master station

LS: Link scan time ( Page 72, Appendix 3 (1))

n: SM ÷ LS (Round off the calculated value to the nearest integer.)

*1 Regarded as "0" when 0 or less is calculated

When the sequence scan time of the master station is 5ms, the link scan time is 1.2ms, and the input

Ex.

response time of the remote I/O station is 1.5ms:

SM × 2 + (2 - n)*1 × LS + Input response time of remote station (ms)

= 5 × 2 + (2 - 4)*1 × 1.2 + 1.5 [n = 4 (5/1.2 = 4.16..., Round off the calculated value to the nearest integer.)]

= 11.5 [ms]

(b) Master station → Remote station (Output)

The following formula calculates the time after the CPU module device (Y) is turned on (off) until a remote

station output turns on (off).

[Calculation formula]

SM + LS × 2 + Output response time of remote station (ms)

SM: Sequence program scan time of master station

LS: Link scan time ( Page 72, Appendix 3 (1))

× LS + Input response time of remote station (ms)

Appendix 3 Data Link Processing Time

When the sequence scan time of the master station is 5ms, the link scan time is 1.2ms, and the output

Ex.

response time of the remote I/O station is 0.5ms:

SM + LS × 2 + Output response time of remote I/O station (ms)

= 5 + 1.2 × 2 + 0.5

= 7.9 [ms]

(3) Automatic return time

The automatic return time is the time taken for a module recovered from an error to automatically restart data link.

[Calculation formula]

37401 + A + B + C + LS [µs]

A: Constant

B: Constant

C: Constant

LS: Link scan time ( Page 72, Appendix 3 (1))

Transmission speed 2.5Mbps 625kbps 156kbps

A 274526.4 458605.6 1157823.07

B 22.4 × N 81.6 × N 300.8 × N

4-point mode 19.2 + (1.6 × N) 76.8 + (6.4 × N) 307.69 + (25.64 × N)

N: Last station number

8-point mode 19.2 + (3.2 × N) 76.8 + (12.8 × N) 307.69 + (51.28 × N)

16-point mode 19.2 + (6.4 × N) 76.8 + (25.6 × N) 307.69 + (102.56 × N)

Appendix 4 Difference Between L Series and Q Series

This section describes a difference between L series and Q series, and a precaution for establishing an L series

system using programs used in the Q series system.

(1) Specifications comparison

The performance of the LJ61CL12 and the QJ61CL12 is the same. However, the LJ61CL12 cannot be connected

to GX Developer.

(2) Precaution for applying programs

To apply programs used in the Q series system to the L series system, refer to the relevant section in the

following.

MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)

APPENDICES

Appendix 5 I/O Assignment Tables

Copy the following tables and use them for recording I/O assignment for a CC-Link/LT system.

(1) In 4-point mode

Station

No.

Model Input Output

X 0 Y 0 X 0 Y 0

11 11

22 22

33 33

X 4 Y 4 X 4 Y 4

55 55

66 66

77 77

X 8 Y 8 X 8 Y 8

99 99

AA AA

BB BB

X C Y C X C Y C

DD DD

EE EE

FF FF

X 0 Y 0 X 0 Y 0

11 11

22 22

33 33

X 4 Y 4 X 4 Y 4

55 55

66 66

77 77

X 8 Y 8 X 8 Y 8

99 99

AA AA

BB BB

X C Y C X C Y C

DD DD

EE EE

FF FF

Station

No.

Model Input Output

Appendix 5 I/O Assignment Tables

(2) In 8-point mode

Station

No.

Model Input Output

X 0 Y 0 X 0 Y 0

11 11

22 22

33 33

44 44

55 55

66 66

77 77

X 8 Y 8 X 8 Y 8

99 99

AA AA

BB BB

CC CC

DD DD

EE EE

FF FF

X 0 Y 0 X 0 Y 0

11 11

22 22

33 33

44 44

55 55

66 66

77 77

X 8 Y 8 X 8 Y 8

99 99

AA AA

BB BB

CC CC

DD DD

EE EE

FF FF

Station

No.

Model Input Output

APPENDICES

(3) In 16-point mode

Station

No.

Model Input Output

Station

No.

X 0 Y 0 X 0 Y 0

11 11

22 22

33 33

44 44

55 55

66 66

77 77

8 8 8 8

99 99

AA AA

BB BB

CC CC

DD DD

EE EE

FF FF

X 0 Y 0 X 0 Y 0

11 11

22 22

33 33

44 44

55 55

66 66

77 77

8 8 8 8

99 99

AA AA

BB BB

CC CC

DD DD

EE EE

FF FF

Model Input Output

Appendix 5 I/O Assignment Tables

Appendix 6 External Dimensions

The following figure shows the external dimensions of the master module.

45(45)

DIN rail center

490

28.5

(Unit: mm)

Memo

APPENDICES

Appendix 6 External Dimensions

INDEX

Automatic return function . . . . . . . . . . . . . . . . . . . 14

Automatic return time . . . . . . . . . . . . . . . . . . . . . . 74

Compatible software version . . . . . . . . . . . . . . . . . 27

Data link last station information . . . . . . . . . . . . . . 70

Data link stop/restart instruction. . . . . . . . . . . . . . . 70

Dedicated power supply . . . . . . . . . . . . . . . . . . . . 11

Detailed error information . . . . . . . . . . . . . . . . . . . 69

Detailed remote station information . . . . . . . . . . . . 71

External switch information . . . . . . . . . . . . . . . . . . 69

Faulty station information . . . . . . . . . . . . . . . . . . . 68

Parameter settings. . . . . . . . . . . . . . . . . . . . . . . . 14

Power supply adapter . . . . . . . . . . . . . . . . . . . . . 11

Remote I/O error information. . . . . . . . . . . . . . . . . 68

Remote station connection information. . . . . . . . . . 68

Slave station cutoff function . . . . . . . . . . . . . . . . . 14

Transmission delay time. . . . . . . . . . . . . . . . . . . . 73

Transmission speed auto-tracking function . . . . . . . 14

Transmission speed setting . . . . . . . . . . . . . . . . . 16

H/W information . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Installation conditions of a dedicated power supply

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Installation conditions of a power supply adapter . . . 28

Intelligent function module switch setting . . . . . . . . 49

LED indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Link scan time . . . . . . . . . . . . . . . . . . . . . . . . . 18,72

Module specifications . . . . . . . . . . . . . . . . . . . . . . 18

Monitoring other stations. . . . . . . . . . . . . . . . . . . . 64

Monitoring the own station . . . . . . . . . . . . . . . . . . 63

Network wiring specifications. . . . . . . . . . . . . . . . . 19

Number of connectable modules . . . . . . . . . . . . . . 27

Number of occupied I/O points setting . . . . . . . . 16,33

Operating status information . . . . . . . . . . . . . . . . . 70

Operation setting switch . . . . . . . . . . . . . . . . . . . . 16

Memo

REVISIONS

*The manual number is given on the bottom left of the back cover.

Print date *Manual number Revision

July 2011 SH(NA)-081012ENG-A First edition

Japanese manual version SH-081013-A

This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric

Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the

contents noted in this manual.

WARRANTY

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

1. Gratis Warranty Term and Gratis Warranty Range

If any faults or defects (hereinafter "Failure") found to be the responsibility of Mitsubishi occurs during use of the product within the gratis warranty term, the product shall be repaired at no cost via the sales representative or Mitsubishi Service Company. However, if repairs are required onsite at domestic or overseas location, expenses to send an engineer will be solely at the customer's discretion. Mitsubishi shall not be held responsible for any re-commissioning, maintenance, or testing on-site that involves replacement of the failed module. [Gratis Warranty Term] The gratis warranty term of the product shall be for one year after the date of purchase or delivery to a designated place. Note that after manufacture and shipment from Mitsubishi, the maximum distribution period shall be six (6) months, and the longest gratis warranty term after manufacturing shall be eighteen (18) months. The gratis warranty term of repair parts shall not exceed the gratis warranty term before repairs. [Gratis Warranty Range] (1) The range shall be limited to normal use within the usage state, usage methods and usage environment, etc.,

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

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

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

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

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

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

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

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

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

2. Onerous repair term after discontinuation of production

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

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

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

3. Overseas service

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

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

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

5. Changes in product specifications

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

Microsoft, Windows, Windows NT, and Windows Vista are registered trademarks of Microsoft Corporation in the United

SH(NA)-081012ENG-A

States and other countries.

Pentium is a trademark of Intel Corporation in the United States and other countries.

Ethernet is a trademark of Xerox Corporation.

All other company names and product names used in this manual are trademarks or registered trademarks of their

respective companies.

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Mitsubishi Electric Europe B.V. /// FA - European Business Group /// Gothaer Straße 8 /// D-40880 Ratingen /// Germany Tel.: +49(0)2102-4860 /// Fax: +49(0)2102-4861120 /// info@mitsubishi-automation.com /// www.mitsubishi-automation.com

Mitsubishi Melsec-L, LJ61CL12 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY PRECAUTIONS

CONDITIONS OF USE FOR THE PRODUCT

INTRODUCTION

RELEVANT MANUALS

CONTENTS

MANUAL PAGE ORGANIZATION

TERMS

PACKING LIST

CHAPTER 1 CHARACTERISTICS OF CC-Link/LT SYSTEM

1.1 CC-Link/LT System

1.2 Features

CHAPTER 2 PART NAMES

CHAPTER 3 SPECIFICATIONS

3.1 General Specifications

3.2 Performance Specifications

3.3 I/O Signal List

3.4 Buffer Memory List

CHAPTER 4 PROCEDURE BEFORE OPERATION

CHAPTER 5 SYSTEM CONFIGURATION

5.1 Overall Configuration

5.3 Precautions for System Configuration

5.2 Applicable System

CHAPTER 6 INSTALLATION AND WIRING

6.2 Point Mode Setting and the Number of Occupied I/O Points Setting

6.3.1 Connecting a dedicated flat cable connector

6.3.2 Connecting a VCTF cable connector/flexible cable connector

6.3.3 Using cables of different types together

6.3.4 Connecting terminating resistors

6.3.5 Checking wiring

6.4 Installing/Removing a Remote Station

6.5 Last Station Number Setting

CHAPTER 7 PROGRAMMING

7.1 System Configuration Example

7.2 Devices Available for Users

7.3 Program Example

CHAPTER 8 TROUBLESHOOTING

8.1 Condition of Each Station in Case of Failure Station Status if an Error Occurs

8.2 Visual Check

8.3.2 The L RUN LED does not turn on

8.3.1 The RUN LED does not turn on

8.3 Troubleshooting of the Master Station

8.3.3 The ERR. LED is on or flashing

8.3.4 The L ERR. LED is on or flashing

8.4 Troubleshooting of Remote I/O Stations

8.4.1 The PW LED does not turn on

8.4.2 The L RUN LED does not turn on

8.4.3 The L ERR. LED is on or flashing

8.5 I/O Errors in Remote I/O Stations

8.5.1 Input data cannot be read from a remote I/O station

8.5.2 Data cannot be output from a remote I/O station

8.6 Error Codes

8.7 CC-Link/LT Diagnostics

8.8 Self-loopback Test

APPENDICES

Appendix 1 Details of Buffer Memory Areas

Appendix 3 Data Link Processing Time

Appendix 4 Difference Between L Series and Q Series

Appendix 5 I/O Assignment Tables

Appendix 6 External Dimensions

INDEX

REVISIONS

WARRANTY