Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual

Download

Page 1

MELSEC-L SSCNET/H Head Module User's Manual

-LJ72MS15

Page 2

Page 3

SAFETY PRECAUTIONS

WARNING

CAUTION

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

Indicates that incorrect handling may cause hazardous conditions, resulting in minor or moderate injury or property damage.

(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.

In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".

Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to

serious consequences. Observe the precautions of both levels because they are important for personal and system safety. Make sure that the end users read this manual and then keep the manual in a safe place for future reference.

[Design Precautions]

WARNING

● Configure safety circuits external to the programmable controller to ensure that the entire system operates safely even when a fault occurs in the external power supply or the programmable controller. Failure to do so may result in an accident due to an incorrect output or malfunction. (1) Emergency stop circuits, protection circuits, and protective interlock circuits for conflicting

operations (such as forward/reverse rotations or upper/lower limit positioning) must be configured external to the programmable controller.

(2) When the programmable controller detects an abnormal condition, it stops the operation and all

outputs are:

• Turned off if the overcurrent or overvoltage protection of the power supply module is activated.

• Held or turned off according to the parameter setting if the self-diagnostic function of the head module detects an error such as a watchdog timer error.

Also, all outputs may be turned on if an error occurs in a part, such as an I/O control part, where the head module cannot detect any error. To ensure safety operation in such a case, provide a safety mechanism or a fail-safe circuit external to the programmable controller. For a fail-safe circuit example, refer to Page 134, Appendix 9.

(3) Outputs may remain on or off due to a failure of a component such as a relay and transistor in an

output circuit. Configure an external circuit for monitoring output signals that could cause a serious accident.

Page 4

[Design Precautions]

WARNING

● In an output circuit, when a load current exceeding the rated current or an overcurrent caused by a load short-circuit flows for a long time, it may cause smoke and fire. To prevent this, configure an external safety circuit, such as a fuse.

● Configure a circuit so that the programmable controller is turned on first and then the external power supply. If the external power supply is turned on first, an accident may occur due to an incorrect output or malfunction.

● Configure a circuit so that the external power supply is turned off first and then the programmable controller. If the programmable controller is turned off first, an accident may occur due to an incorrect output or malfunction.

● For the operating status of each station after a communication failure, refer to relevant manuals for each network. Incorrect output or malfunction due to a communication failure may result in an accident.

● When connecting a peripheral with the head module or connecting an external device, such as a personal computer, with an intelligent function module to modify data of a running programmable controller, configure an interlock circuit in the program of the Motion controller to ensure that the entire system will always operate safely. For other controls to a running programmable controller (such as program modification of the Motion controller or operating status change), read relevant manuals carefully and ensure the safety before the operation. 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 of the Motion controller, and determine corrective actions to be taken between the external device and head module in case of a communication failure.

● The optical transmitter and receiver of the head module use laser diodes (class 1 in accordance with IEC 60825-1). Do not look directly at a laser beam. Doing so may harm your eyes.

[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.

● During control of an inductive load such as a lamp, heater, or solenoid valve, a large current (approximately ten times greater than normal) may flow when the output is turned from off to on. Therefore, use a module that has a sufficient current rating.

● After the head module is powered on or is reset, the time taken to enter the RUN status varies depending on the system configuration and/or parameter settings. Design circuits so that the entire system will always operate safely, regardless of the time.

Page 5

[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 head module in an environment that meets the general specifications in this manual. Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the product.

● To interconnect modules, engage the respective connectors and securely lock the module joint levers until they click. Incorrect interconnection may cause malfunction, failure, or drop of the module.

● Do not directly touch any conductive parts and electronic components of the module. Doing so can cause malfunction or failure of the module.

[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.

● After installation and wiring, attach the included terminal cover to the module before turning it on for operation. Failure to do so may result in electric shock.

Page 6

[Wiring Precautions]

CAUTION

● Individually ground the FG and LG terminals of the programmable controller with a ground resistance of 100 ohms or less. Failure to do so may result in electric shock or malfunction.

● Use applicable solderless terminals and tighten them within the specified torque range. If any spade solderless terminal is used, it may be disconnected when a terminal block screw comes loose, resulting in failure.

● Check the rated voltage and terminal layout before wiring to the module, and connect the cables correctly. Connecting a power supply with a different voltage rating or incorrect wiring may cause a fire or failure.

● Connectors for external devices must be crimped or pressed with the tool specified by the manufacturer, or must be correctly soldered. Incomplete connections may cause short circuit, fire, or malfunction.

● Securely connect the connector to the module.

● 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.

● 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.

● Check the interface type and correctly connect the cable. Incorrect wiring (connecting the cable to an incorrect interface) may cause failure of the module and external device.

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

● When disconnecting the cable from the module, do not pull the cable by the cable part. For the cable with connector, hold the connector part of the cable. For the cable connected to the terminal block, loosen the terminal screw. Pulling the cable connected to the module may result in malfunction or damage to the module or cable.

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

● A protective film is attached to the top of the module to prevent foreign matter, such as wire chips, from entering the module during wiring. Do not remove the film during wiring. Remove it for heat dissipation before system operation.

● Mitsubishi Electric programmable controllers must be installed in control panels. Connect the main power supply to the power supply module in the control panel through a relay terminal block. Wiring and replacement of a power supply module must be performed by qualified maintenance personnel with knowledge of protection against electric shock. For wiring methods, refer to the MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection).

Page 7

[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 or

retightening the terminal block screws. Failure to do so may result in electric shock.

[Startup and Maintenance Precautions]

CAUTION

● Before performing online operations (especially, program modification of the Motion controller, forced output, and operation status change) for the running head module from the peripheral device connected, read relevant manuals carefully and ensure the safety. Improper operation may damage machines or cause accidents.

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

● Use any radio communication device such as a cellular phone or PHS (Personal Handy-phone

System) more than 25cm away in all directions from the programmable controller. Failure to do so may cause malfunction.

● Shut off the external power supply (all phases) used in the system before mounting or removing a module. Failure to do so may cause the module to fail or malfunction.

● Tighten the terminal block screws within the specified torque range. Undertightening can cause drop of the component or wire, short circuit, or malfunction. Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.

● After the first use of the product (module and terminal block), do not connect/disconnect the product more than 50 times (in accordance with IEC 61131-2). Exceeding the limit may cause malfunction.

● Before handling the module, touch a conducting object such as a grounded metal to discharge the static electricity from the human body. Failure to do so may cause the module to fail or malfunction.

[Disposal Precautions]

CAUTION

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

Page 8

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.

Page 9

INTRODUCTION

Thank you for purchasing the Mitsubishi Electric MELSEC-L series programmable controllers.

This manual describes the operating procedure, system configuration, parameter setting, functions, and

troubleshooting of the SSCNET III/H head module (hereafter abbreviated as head 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.

Page 10

RELEVANT MANUALS

(1) Motion controller relevant manuals

For Motion controllers, refer to the following.

Manual name

Q173D(S)CPU/Q172D(S)CPU Motion controller User's Manual <IB-0300133, 1XB927>

Q170MSCPU Motion controller User's Manual <IB-0300212, 1XB962>

Q173D(S)CPU/Q172D(S)CPU Motion controller Programming Manual (COMMON) <IB-0300134, 1XB928>

Q173D(S)CPU/Q172D(S)CPU Motion controller (SV13/SV22) Programming Manual (Motion SFC) <IB-0300135, 1XB929>

(2) Operating manual

Manual name

GX Works2 Version 1 Operating Manual (Common) <SH-080779ENG, 13JU63>

Description

Specifications of the Motion CPU modules, Q172DLX servo external signal interface module, Q172DEX synchronous encoder interface module, Q173DPX manual pulse generator interface module, power supply modules, servo amplifiers, SSCNET III cables, and serial absolute synchronous encoder cables

Specifications of the Q170MSCPU Motion controller, Q172DLX servo external signal interface module, Q173DPX manual pulse generator interface module, servo amplifiers, and SSCNET III cables; system maintenance and inspection; and troubleshooting

Multiple CPU system configuration, performance specifications, common parameters, auxiliary and applied functions, and error lists

Functions, programming, debugging, and error lists of Motion SFC programs

Description

System configuration, parameter settings, and online operations of GX Works2, which are common to Simple projects and Structured projects

Page 11

Memo

Page 12

CONTENTS

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CONDITIONS OF USE FOR THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

MANUAL PAGE ORGANIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

TERM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

PACKING LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

CHAPTER 1 HEAD MODULE 16

CHAPTER 2 PART NAMES 20

CHAPTER 3 SPECIFICATIONS 24

3.1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.3 Function List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

CHAPTER 4 PROCEDURES BEFORE OPERATION 29

CHAPTER 5 SYSTEM CONFIGURATION 31

5.1 Head Module System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.2 Applicable Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

CHAPTER 6 INSTALLATION AND WIRING 35

6.1 Wiring Environment and Installation Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.1.1 Installation environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

6.1.2 Installation position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

6.2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.2.1 Connecting modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

6.2.2 Mounting the modules on a DIN rail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

6.2.3 Changing modules on a DIN rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

6.3 Wiring to the Power Supply Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.4 Testing the Head Module Before Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.5 Wiring to the Head Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

6.5.1 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

6.5.2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

6.5.3 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

CHAPTER 7 PARAMETER SETTING 53

7.1 PLC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

7.2 Intelligent Function Module Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Page 13

CHAPTER 8 CYCLIC TRANSMISSION 65

8.1 Cyclic Transmission of Bit Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.2 Cyclic Transmission of Word Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

CHAPTER 9 SSCNET III COMMUNICATION CONDITION MONITOR 77

CHAPTER 10 MAINTENANCE AND INSPECTION 81

10.1 Daily Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

10.2 Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

CHAPTER 11 TROUBLESHOOTING 83

11.1 Before Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

11.2 Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

11.3 System Error History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

11.4 Checking the LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

11.5 Troubleshooting by Symptom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

11.5.1 Cyclic transmission cannot be performed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

11.5.2 Transient transmission cannot be performed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

11.6 Error Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

APPENDICES 101

Appendix 1 Forced On/Off for External I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Appendix 2 Remote Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Appendix 3 END Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Appendix 4 Link Special Relay (SB) List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Appendix 5 Link Special Register (SW) List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Appendix 6 Special Relay (SM) List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Appendix 7 Special Register (SD) List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Appendix 8 EMC and Low Voltage Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Appendix 8.1 Requirements for compliance with the EMC Directive . . . . . . . . . . . . . . . . . . . . . . . .124

Appendix 8.2 Requirements for compliance with the Low Voltage Directive . . . . . . . . . . . . . . . . . .132

Appendix 9 General Safety Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Appendix 10Calculating Heating Value of Programmable Controller . . . . . . . . . . . . . . . . . . . . . . . . 136

Appendix 10.1 Calculating the average power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Appendix 11 Processing Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Appendix 12Checking Serial Number and Function Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Appendix 13External Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

INDEX 146

REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Page 14

MANUAL PAGE ORGANIZATION

The section of the current page is shown.

The chapter of the current page is shown.

"" is used for screen names and items.

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

shows operating procedures.

shows reference manuals.

shows notes that requires attention.

shows mouse operations.

shows reference pages.

shows setting or operating examples.

Ex.

shows useful information.

A window selected in the view selection area is displayed.

View selection area

[Online] [Write to PLC...]

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

Project window

[Parameter]

[PLC Parameter]

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

Menu bar

Ex.

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

In this manual, pages are organized and the symbols are used as shown below.

The following illustration is for explanation purpose only, and should not be referred to as an actual documentation.

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

Page 15

TERM

Unless otherwise specified, this manual uses the following terms.

Ter m Description

Buffer memory A memory in an intelligent function module, where data (such as setting values and monitoring values) are stored

Cyclic transmission

Data link A generic term for cyclic transmission and transient transmission

Dedicated instruction An instruction that simplifies programming for using functions of intelligent function modules

Device A device (X, Y, W, or others) in a head module

Disconnection A process of stopping data link if a data link error occurs

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

Head module The abbreviation for the LJ72MS15 SSCNET III/H head module

Intelligent function module A module that has functions other than input and output, such as an A/D converter module and D/A converter module

Link device A device (RX, RY, RWr, or RWw) in a head module

Link special register (SW) Word data that indicates the operating status and data link status of a head module

Link special relay (SB) Bit data that indicates the operating status and data link status of a head module

Motion controller A generic term for the Q173DSCPU/Q172DSCPU Motion CPU module and Q170MSCPU Motion controller

MT Developer2 The product name of the MELSOFT programming software package for the Motion controllers

Parameter memory A flash ROM in a head module, where the parameters of the head module are stored

RAS The abbreviation for Reliability, Availability, and Serviceability. This term refers to usability of automated equipment.

Remote input (RX) Bit data input from a head module to a Motion controller

Remote output (RY) Bit data output from a Motion controller to a head module

Remote register (RWr) Word data input from a head module to a Motion controller

Remote register (RWw) Word data output from a Motion controller to a head module

Return A process of restarting data link when a station recovers from an error

SSCNET III/H One of the high-speed synchronous networks between a Motion controller and a servo amplifier

Transient transmission A function that enables a Motion controller to access a head module by using dedicated instructions

A function by which data are periodically exchanged among stations on the same network using link devices (RX, RY, RWw, and RWr)

Page 16

PACKING LIST

The following items are included in the package of this product. Before use, check that all the items are included.

LJ72MS15

Head module (LJ72GF15-T2) + END cover (L6EC) Safety Guidelines (IB-0800494)

Page 17

Memo

Page 18

CHAPTER 1 HEAD MODULE

The head module can connect MELSEC-L series I/O modules and intelligent function modules on SSCNET III/H.

The head module makes it possible to integrate systems into a single system as remote I/O modules and intelligent

function modules for a different system network can be configured. This leads to wire-saving and space-saving of the

system.

(1) Cyclic transmission

The I/O signals of a module connected to the head module can operate as those of the Motion controller. (

Page 65, CHAPTER 8)

For example, when the output (Y) of the Motion controller is turned on, the output (Y) of a module connected to

the head module turns on.

Motion controller Head module

Motion

controller

RWw

RWr

Head module Input module Output module Intelligent

RWw

RWr

function module

Buffer

memory

Page 19

CHAPTER 1 HEAD MODULE

1234

Device

Buffer memory

Intelligent

function module

Motion controller Head module

Command

RST M0 RFROM W0,K2,H02,H10,K1,M0

(2) Transient transmission

The Motion controller can directly access the buffer memory of an intelligent function module connected to the

head module by transient transmission. The Motion controller sends requests to the head module with dedicated instructions ( Programming Manual

(Motion SFC) for the Motion controller used).

(3) Setting parameters

Parameters for the head module can be set using software, GX Works2. Creating parameter setting programs is not required. ( Page 53, CHAPTER 7)

Page 20

(4) Diagnostics

GX Works2 and MT Developer2 facilitate diagnosing the head module and connected modules. ( Page 77,

CHAPTER 9, Page 83, Section 11.2)

(a) System Monitor (GX Works2)

(b) SSCNET III Communication Condition Monitor (MT Developer2)

Page 21

Memo

CHAPTER 1 HEAD MODULE

Page 22

CHAPTER 2 PART NAMES

This chapter describes each part and name of the head module.

No. Name Description

 Indicates the operating status.

On Operating normally (RUN status)

Working normally (STOP status)

• The switch of the head module has been set to STOP. (Transfer between the devices in the head module is stopped.)

• The Motion controller is in the STOP status. (Transfer between the devices in the head module is stopped.)

• Accepting a remote STOP request

• The head module has stopped due to an error (except a watchdog timer error).

• The initial data are being processed.

• An error has occurred in the own station.

• SSCNET III/H disconnection

• Offline mode

Indicates the error status of the head module. The error details can be checked with PLC diagnostics of GX Works2. ( Page 83, Section 11.2)

A station number setting switch setting error has occurred. (Other than 1 to 64 is set for the station number setting switch.)

Indicates the SSCNET III/H communication error status. The error details can be checked with SSCNET III Communication Condition Monitor of MT Developer2. ( Page 77, CHAPTER 9)

RUN LED

REM. LED

ERR. LED

L ERR. LED

Flashing

Off A hardware failure or a watchdog timer error has occurred.

 Indicates the operating status of the own station.

On Operating normally

Flashing Has not been reset after writing to PLC. Or, forced input/output registration is in progress.

Off



On A head module failure or a watchdog timer error has occurred.

Flashing

Off Working normally



On A communication error has occurred.

Off Communicating normally

Page 23

No. Name Description

Flashes several times then turns off.

: Flashing

Switch

2) CNA

3) CNB

4) Serial number display Displays the serial number printed on the rating plate.

 This switch controls the operation of the head module.

SSCNET III cable connector (for the first axis). Connect an SSCNET III cable. ( Page 46, Section 6.5.1) Connect the Motion controller, a servo amplifier for the first axis, or the head module of the preceding station.

SSCNET III cable connector (for the second axis). Connect an SSCNET III cable. ( Page 46, Section 6.5.1) Connect a servo amplifier for the second axis or the head module of the following station. If the head module of own station is the last station, cover the connector with a cap.

Resets the head module or switches it to test mode. Operate the switch with your fingers. Use of a tool such as a screw driver may damage the switch.

• Reset method

1. Hold the switch in the RESET/TEST position for 1 second or more.

Do not release your hand from the switch while it is in the RESET/TEST position.

Switch

2. Check that the ERR. LED flashes several times, and turns off.

CHAPTER 2 PART NAMES

5) Switch

RESET/ TEST

STOP

RUN

3. Set the switch to the STOP position.

The switch automatically returns to the STOP position when your hand is released.

• Test procedure: For details of the test mode, refer to the explanation on the test mode. ( Page 44, Section 6.4)

Stops the data transfer between the link devices of the head module (cyclic data from the Motion controller) and head module devices. (Stops the transfer while performing cyclic transmission with the Motion controller, and stops the output.) Stopping the data transfer stops sending the input/output information of modules, connected to the head module, to the Motion controller. The STOP switch is used when performing a debug operation between modules connected to the head module and external devices. The following shows an example of a debug method with external devices using the STOP switch. (1) Set the switch to "STOP". (2) Data transfer is stopped between the link devices of the head module and head module devices and the devices are

separated from the Motion controller control.

(3) Conduct an input/output test between the module connected to the head module and the external device. Since the

data transfer is stopped, the input/output status data are not sent to the Motion controller.

(4) When the test is complete, write parameters to the head module and start the system operation.

Starts the data transfer between the link devices of the head module (cyclic data from the Motion controller) and head module devices. The output from the Motion controller is output from a module connected to the head module. The input from the module connected to the head module is input to the Motion controller.

Page 24

No. Name Description

Set the tens place of the station number to "x10".

Set the ones place of the station number to "x1".

Rotary switches used to set the station number.

Example: To set the station number to 15, arrange the switches as follows.

Station number setting

6) switch

• Set the station number within the range from 1 to 64. A set value outside the range causes a station number setting switch error, and the ERR. LED flashes.

• Set the station number of the head module so that the station number does not overlap with other head modules' station numbers or servo amplifiers' axis numbers in the same system. (Setting the same number causes a stop error in the Motion controller.)

7) USB connector A connector for connecting to GX Works2. (Connector type: miniB)

8) Module joint levers Levers for connecting modules each other.

9) DIN rail hook A hook used to mount the module to a DIN rail.

Page 25

CHAPTER 2 PART NAMES

Remark

Pull the cover so that the stopper will be set easily.

Stopper

Open the cover.Open the cover.Open the cover.

: On

: Flashing

• Opening and closing the front cover of the head module: The cover on the front of the head module is equipped with a stopper. If you open the cover until it clicks, it will stay open.

• LED indication during a unit test: The RUN LED turns on and the REM. LED flashes while a unit test is performed. For the procedure of a unit test, refer to Page 44, Section 6.4.

Page 26

CHAPTER 3 SPECIFICATIONS

This chapter describes the specifications of the head module.

3.1 General Specifications

Item Specifications

Operating ambient temperature

Storage ambient temperature

Operating ambient humidity

Storage ambient humidity

Vibration resistance

Shock resistance

Operating atmosphere

Operating altitude

Installation location Inside a control panel

Overvoltage

3.2 Performance Specifications

Page 28

Head module

Item Specifications

Number of I/O

points

Number of device points

Number of writes to the parameter memory Up to 100000 times

Allowable momentary power failure time Depends on the power supply module used.

Internal current consumption (5VDC) 0.55A

Laser classification (JIS C 6802, IEC 60825-

External dimensions

Weight 0.20kg

X 4096 points, 512 bytes (Number of points accessible to the actual module)

Y 4096 points, 512 bytes (Number of points accessible to the actual module)

SB 8192 points, 1KB

SW 8192 points, 16KB

SM 2048 points, 256 bytes

SD 2048 points, 4KB

U\G

H90mm

W50mm

D95mm

8192 points, 1KB (Number of usable points on programs) (RY0 is assigned from X0.)

8192 points, 1KB (Number of usable points on programs) (RY0 is assigned from Y0.)

8192 points, 16KB (RWw0 is assigned from W0. RWr0 is assigned from W1000.)

Devices that directly access the buffer memory of intelligent function modules ( User's manual for the intelligent function module used)

Class 1

*1 This number includes only head modules. Servo amplifiers are not included. *2 This is the maximum number of points that can be assigned to the actual module in "PLC Parameter" - "I/O Assignment"

of GX Works2.

Page 29

CHAPTER 3 SPECIFICATIONS

3.3 Function List

The following table lists the functions of the head module.

Function Description Reference

Cyclic transmission

Transient transmission

Output mode setting for error

Operation mode setting for a hardware error

System monitor

Diagnostics

System error history

Remote RUN/STOP Changes the status of the head module to RUN or STOP, without using the switch. Page 105, Appendix 2

Remote RESET Resets the head module when it is in the STOP status, without using the switch. Page 105, Appendix 2

Monitoring/test

Forced on/off for external I/O The external input/output of the head module can be forcibly turned on or off. Page 101, Appendix 1

SSCNET III Communication Condition Monitor

The inputs/outputs of modules connected to the head module can be handled just like those of the Motion controller.

The buffer memory of intelligent function modules can be accessed directly from the Motion controller.

The Motion controller sends requests to the head module with dedicated instructions.

Specifies whether to clear or hold the output to each module when a stop error or a data link error occurs in the head module.

Specifies whether to stop the auto refresh of the head module or not, when a hardware error occurs (when the head module detects SP.UNIT DOWN) in the intelligent function module.

Diagnostics of the head module and connected modules can be performed using GX Works2.

The connection status of whole SSCNET III/H can be checked using MT Developer2. Page 77, CHAPTER 9

The history of errors that occurred in the head module and intelligent function modules can be confirmed on a single screen.

The status of the head module devices and the buffer memory of the intelligent function module can be monitored, and current values can be changed in GX Works2. Use one of the following to monitor or change the current value.

• Device/buffer memory batch monitor

• Watch window

• Present value change

Page 65, CHAPTER 8

Programming Manual (Motion SFC) for the Motion controller used

Page 63, Section 7.1 (6)

Page 83, Section 11.2

Page 87, Section 11.3

GX Works2 operating manual

3.3 Function List

Page 30

Memo

Page 31

CHAPTER 4 PROCEDURES BEFORE OPERATION

Checkbox

Consider the system configuration and link device assignment.

System consideration

Connection

Connect an SSCNET III cable to the head module.

Set parameters for each module.

Configuration

Starting data link

Start data link.

CHAPTER 4 PROCEDURES BEFORE OPERATION

This chapter describes the procedures before operating the head module.

For start-up examples, refer to the user's manual for the Motion controller used.

 Page 31, CHAPTER 5,

Page 65, CHAPTER 8

Installation

Install the power supply module, head module, I/O module(s), intelligent function module(s), and an END cover.

Unit test

Perform unit tests on the head module and intelligent function module(s).

 Page 35, Section 6.1,

Page 36, Section 6.2, Page 44, Section 6.3

 Page 44, Section 6.4

 Page 46, Section 6.5

 Page 53, CHAPTER 7,

Page 65, CHAPTER 8

 Page 20, CHAPTER 2,

Page 65, CHAPTER 8

Page 32

 Page 77, CHAPTER 9

Network diagnostics

Check that communications can be performed normally with the SSCNET III/H communication status monitor.

If the head module is powered on when there is no communication with the Motion controller, it takes approximately 5 seconds to change to the RUN status.

Page 33

CHAPTER 5 SYSTEM CONFIGURATION

Power supply module

SSCNET III/H

head module

END cover

I/O module or

intelligent function module

CHAPTER 5 SYSTEM CONFIGURATION

This chapter describes system configuration using a head module.

For SSCNET III/H configuration, refer to the following.  User's manual for the Motion controller used

5.1 Head Module System Configuration

The following shows system configuration using a head module.

For power supply modules, refer to the following.  MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

For I/O modules and intelligent function modules, refer to the manual for the module used.

The MELSEC-L series CPU module cannot be connected to a system using a head module.

5.1 Head Module System Configuration

Page 34

5.2 Applicable Systems

(1) Connectable modules and the number of modules

(a) Connectable modules

The following MELSEC-L series modules can be connected to the head module.

• Power supply module

• I/O modules

• Analog-digital converter module

• Digital-analog converter module

• Analog input/output modules

• Multiple input (voltage/current/temperature) module

• RTD input module

• High-speed counter module

• Flexible high-speed I/O control module

*1 Use the head module with a serial number (first five digits) of "15072" or later.

(b) Number of modules

The number of I/O modules and intelligent function modules that can be connected is 10 in total.

*1 The number of modules is exclusive of the number of power supply modules and END covers. *2 For some intelligent function modules, one module occupies a space by two modules. For the occupied space, refer to

the user's manual for the module used before configuring a system.

*1*2

Some modules have restrictions on the number of modules. The following table shows the relevant models and

the number of modules.

Module Model name Number of modules

Head module LJ72MS15 1

(2) Modules/unit that cannot be connected

The CPU module and the following module/unit cannot be connected to the head module.

Module/unit Model name

Branch module L6EXB

Extension module L6EXE

RS-232 adapter L6ADP-R2

Display unit L6DSPU

Positioning module

Temperature control module

Simple motion module LD77MH4, LD77MH16

Serial communication module LJ71C24, LJ71C24-R2

CC-Link IE Field Network master/local module LJ71GF11-T2

CC-Link IE Field Network head module LJ72GF15-T2

CC-Link master/local module LJ61BT11

CC-Link/LT master module LJ61CL12

Ethernet interface module LJ71E71-100

AnyWireASLINK master module LJ51AW12AL

LD75P1, LD75D1, LD75P2, LD75D2, LD75P4, LD75D4

L60TCTT4, L60TCTT4BW, L60TCRT4, L60TCRT4BW

Page 35

CHAPTER 5 SYSTEM CONFIGURATION

(3) Motion controller

The SSCNET III/H-compatible motion CPU and the stand-alone Motion controller are compatible.

Module/unit Model name

R16MTCPU

R32MTCPU

Motion CPU

Stand-alone Motion controller Q170MSCPU

To connect the head module to the Motion controller, set the communication type

R64MTCPU

Q172DSCPU

Q173DSCPU

of the Motion controller to

"SSCNET III/H". ("SSCNET III" is not available.)

*1 Set with "SSCNET Setting" in "Basic Setting" of MT Developer2.

(4) Software package

GX Works2 and MT Developer2 are required for setting and diagnosing the head module.

GX Developer is not available.

Software Vers ion

GX Works2 Version 1.98C or later

MT Developer2 Version 1.56J or later

(5) Precautions for system configuration

(a) Rated output current (5VDC)

Configure a system so that the total current consumption may not exceed 5VDC, rated output current of the

power supply module.

For specifications of the power supply module, refer to the following.  MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

5.2 Applicable Systems

Page 36

Memo

Page 37

CHAPTER 6 INSTALLATION AND WIRING

This chapter describes the installation and wiring of modules.

6.1 Wiring Environment and Installation Position

When installing the module in a control panel, fully consider its operability, maintainability, and environmental

resistance.

6.1.1 Installation environment

Install the programmable controller according to the installation environment shown in the general specifications. (

Page 24, Section 3.1)

Do not install the programmable controller to the place where:

• Ambient temperature is outside the range of 0 to 55;

• Ambient humidity is outside the range of 5 to 95%RH;

• Condensation occurs due to rapid temperature change;

• Corrosive gas or combustible gas is present;

• Conductive powder such as dust and iron powder, oil mist, salinity, or organic solvent is filled;

• The programmable controller is exposed to direct sunlight;

• A strong electric field or strong magnetic field is generated; and

• The programmable controller is subject to vibration and shock.

6.1.2 Installation position

To ensure good ventilation and ease module change, provide clearance between the module top/bottom and

structures/parts as shown below.

30mm or more

Control panel

30mm or more

50mm or more 50mm or more

*1 When using connectors for external devices, provide clearance of 80mm or more.

Programmable controller

20mm or more

6.1 Wiring Environment and Installation Position

6.1.1 Installation environment

Door

Page 38

6.2 Installation

This section describes how to interconnect modules and how to mount them on a DIN rail.

• Modules must be mounted on a DIN rail.

• Connect an END cover on the right of the terminal module.

(1) Precautions for connecting and mounting modules

• Do not directly touch any conductive parts and electronic components of the module. Doing so can cause

malfunction or failure of the module.

• The number of times the module can be connected/disconnected is limited to 50 times. (In accordance with

IEC 61131-2) Exceeding this limit may cause malfunction.

• Do not drop or apply strong shock to the module case.

• Do not remove the printed-circuit board of the module from the case. Doing so may cause failure of the

module and/or printed-circuit board.

Page 39

CHAPTER 6 INSTALLATION AND WIRING

Release

(1)

Lock

6.2.1 Connecting modules

This section describes the procedure for connecting modules.

An example will show how a head module is connected to the L61P.

Shut off the external power supply for the system in all phases before connecting or disconnecting modules.

(1) Connecting modules

1. To release the module joint levers located at the top

and bottom of the head module:

2. Slide the lever toward the front side of the module

until it clicks. To release the lever, pull the

projection (1) of the lever.

3. Insert the connector of the power supply module

into that of the head module so that they are

securely engaged.

4. To lock the module joint levers:

6.2.1 Connecting modules

6.2 Installation

(1)

5. Slide the lever toward the back side of the module

until it clicks. Check that the modules are securely

connected. To lock the lever, push the projection (1)

of the lever.

Page 40

(2) Disconnecting modules

Disconnect the modules by reversing the procedure above.

• Failure to securely lock the module joint levers until they click may cause malfunction, failure, or drop of the module.

• To slide the lever, use the projection of the lever. Sliding the lever with a part other than the projection may cause a difficulty of sliding.

• The metal on the back of the module may be at a high temperature immediately after the module is powered off. Take care to prevent a burn at module disconnection.

Page 41

6.2.2 Mounting the modules on a DIN rail

Hook

This section describes a procedure for mounting the modules on a DIN rail.

An example of the use of the DIN rail stopper is described in the following procedure. Fix the module according to the manual of the DIN rail stopper used.

(1) Mounting procedure

1. Pull down all DIN rail hooks on the back of the

modules.

The levers should be pulled down until you hear them

click.

CHAPTER 6 INSTALLATION AND WIRING

2. Hang the upper tabs of the modules on a DIN rail,

and push the modules in position.

3. Lock the DIN rail hooks to the DIN rail to secure the

modules in position.

Push each hook up until you hear it click.

If the hooks are beyond the reach, use a tool such as a

screw driver.

4. Loosen the screw on DIN rail stopper.

6.2.2 Mounting the modules on a DIN rail

6.2 Installation

Page 42

Hitch the hook to bottom of the DIN rail

Hitch the hook to top of the DIN rail

DIN rail

DIN rail stopper

stopper

5. Hitch the bottom hook of the DIN rail stopper to the

bottom of the DIN rail.

Hitch the hook according to the orientation of the arrow

on the front of the stopper.

6. Hitch the upper hook of the DIN rail stopper to the

top of the DIN rail.

7. Slide the DIN rail stopper up to the left side of the

modules.

8. Hold the DIN rail stopper in the direction opposite to

the arrow on the stopper and tighten the screw with

a screw driver.

9. Attach a DIN rail stopper on the right of the modules

with the same procedure.

Install the stopper upside down for the right side.

Page 43

CHAPTER 6 INSTALLATION AND WIRING

35mm

P=200mm or less

DIN rail

DIN rail mounting screw

(obtained by user)

PPP

30mm or less

Do not slide modules from the edge of the DIN rail when mounting them. Doing so may damage the metal part located on the back of the module.

(2) Removal procedure

Remove the modules from the DIN rail by reversing the above procedure.

(3) Applicable DIN rail model (IEC 60715)

• TH35-7.5Fe

• TH35-7.5Al

• TH35-15Fe

(4) DIN rail stopper

Use a stopper that is attachable to the DIN rail.

(5) Interval between DIN rail mounting screws

To ensure the strength of a DIN rail, tighten DIN rail mounting screws (obtained by user) within 30mm away from

the both edges of the DIN rail and at 200mm-interval between the screws.

6.2.2 Mounting the modules on a DIN rail

6.2 Installation

Page 44

6.2.3 Changing modules on a DIN rail

Module to be replaced

This section describes a procedure for changing modules on a DIN rail by sliding them rightward.

Remove the mounted terminal block and disconnect the connectors beforehand.

1. Remove the DIN rail stopper on the right edge.

2. Pull down DIN rail hooks on the back of the

modules.

Pull down the DIN rail hooks on the module to be

changed and the module on its right, until you hear them

click.

If the hooks are beyond the reach, use a tool such as a

screw driver.

3. Release the module joint levers on the modules.

Slide the module joint levers on the module to be

changed and on the module on the right of the changed

module toward the front side of the module until they

click.

4. Disconnect the modules by sliding them

individually.

5. Change the modules.

Page 45

CHAPTER 6 INSTALLATION AND WIRING

6. Slide the modules and plug the connectors.

7. Lock the module joint levers.

Slide the levers toward the back side of the module until

they click.

8. Lock the DIN rail hooks and attach the DIN rail

stopper.

( Page 39, Section 6.2.2)

Do not slide modules from the edge of the DIN rail when mounting them. Doing so may damage the metal part located on the back of the module.

6.2.3 Changing modules on a DIN rail

6.2 Installation

Page 46

6.3 Wiring to the Power Supply Modules

Select "Self Test".

For information on wiring to the power supply modules, refer to the following.  MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)

6.4 Testing the Head Module Before Wiring

(1) Unit test

Run a unit test to check if there is any abnormality in the head module hardware.

1. Connect the modules as shown left. Connect the

head module to GX Works2.

2. Set the PLC parameter in GX Works2 as shown left.

Project window  [Parameter]  [PLC Parameter]

 "Communication Head Setting"

3. Write the PLC parameter set in GX Works2 to the

head module.

[Online]  [Write to PLC...]

Page 47

CHAPTER 6 INSTALLATION AND WIRING

SSCNET III cable

or power off and on

: On

: Flashing

4. Connect the CNA connector and the CNB connector

of the head module with an SSCNET III cable.

5. Reset the head module or turn off and on the power

supply.

When completed

When failed

: On

6. Unit test begins.

The RUN LED turns on and the REM. LED flashes.

7. The REM. LED turns off when the test is completed.

 When completed: The REM. LED turns off while the

ERR. LED and the L ERR. LED remain off.

 When failed: The REM. LED turns off and either the

ERR. LED or the L ERR. LED turns on or flashes.

If the test fails, replace the SSCNET III cable and

conduct the test again. If the test fails again, it may be

due to a hardware failure in the head module. Please

consult your local Mitsubishi representative.

6.4 Testing the Head Module Before Wiring

Either of these LEDs turns on or flashes.

Page 48

6.5 Wiring to the Head Module

Knob

This section describes the wiring to the head module.

6.5.1 Wiring

This section describes SSCNET III cable wiring and precautions. For network configuration and cables for wiring, refer

to the following.  User's manual for the Motion controller used

(1) Connecting an SSCNET III cable

(a) Connecting the cable

1. Power off the target device to be connected and the

head module.

2. Connect an SSCNET III cable, which is to be

connected to the Motion controller, the first axis, or

the preceding station, to CNA.

Connect the SSCNET III cable to CNA holding the knob

of the cable connector. Securely insert the cable until it

clicks.

3. Connect an SSCNET III cable, which is to be

connected to the second axis or the following

station, to CNB.

4. Power on the head module.

5. Power on the external devices connected to CNA

and CNB of the head module.

Page 49

(b) Disconnecting the cable

CHAPTER 6 INSTALLATION AND WIRING

1. Power off the external devices connected to the

head module, and the head module.

2. Disconnect the SSCNET III cable holding the knob

of the cable connector.

6.5.1 Wiring

6.5 Wiring to the Head Module

Page 50

6.5.2 Grounding

(3) Joint grounding Not allowed

Grounding

Programmable

controller

Programmable

controller

Programmable

controller

Another equipment

Grounding

(1) Independent grounding Best (2) Common grounding Good

Observe the following:

• Provide independent grounding when possible. Ground the FG and LG terminals to the protective ground

conductor dedicated to the programmable controller.

• If independent grounding cannot be provided, employ (2) Shared grounding shown below.

• Use thick cables up to 2. Bring the grounding point close to the programmable controller as much as

possible so that the ground cable can be shortened.

Page 51

6.5.3 Precautions

This section describes wiring precautions.

(1) Precautions for handling the SSCNET III cable

• Do not step on the SSCNET III cable.

• When laying the SSCNET III cable, keep the minimum or a larger cable bend radius. If the bend radius is

smaller than the minimum cable bend radius, it may cause malfunctions due to characteristic degradation or

a wire break.

• When installing or removing the SSCNET III cable, hold the knob of the cable connector.

(2) Connecting the SSCNET III cable

• When connecting the SSCNET III cable to the head module, connect the SSCNET III cable to CNA and CNB

of the head module, holding the knob of the SSCNET III cable connector. Securely insert the cable until it

clicks.

• If the end faces of the SSCNET III cable are covered with dirt, optical transmission is interrupted and a

malfunction may occurs. Wipe the dirt with a nonwoven fabric. Do not use a solvent such as alcohol.

CHAPTER 6 INSTALLATION AND WIRING

(3) Disconnecting the SSCNET III cable

• When disconnecting the SSCNET III cable, hold the knob of the SSCNET III cable connector then pull it out.

• After disconnecting the SSCNET III cable, put the cap, attached to the head module, to the head module.

• Cover the end faces with protection tubes for optical cord's end faces.

6.5.3 Precautions

6.5 Wiring to the Head Module

Page 52

(4) Precautions for wiring the SSCNET III cable

The SSCNET III cable uses optical fibers. If a severe impact, lateral pressure, a hard pull, sudden bending, or a

twist is exerted on the optical fibers, its inside distorts or breaks, and optical transmission may become

unavailable. Especially, MR-J3BUSM and MR-J3BUSM-A are made of synthetic resin, it melts if left near fire

or a high temperature.

Therefore, do not let the fibers come into contact with a part having a high temperature during operation, such as

the radiator and the regenerative option of a servo amplifier, and a servo motor.

Use the optical fibers within the range of the operating temperature described in the manual for the Motion

controller used. Read this section carefully and handle the fibers with caution.

(a) Minimum bend radius

Lay the cables keeping the minimum or a larger bend radius. Do not press the cable against edges of

equipment or other pointed objects. Keep an appropriate length for the SSCNET III cable with the

consideration for the dimensions and arrangement of the head module, so that the cable keeps at least the

minimum bend radius when laid. When closing the door of a control panel, secure the SSCNET III cable

against being held down by the door and consequently having a bend radius smaller than the required

minimum.

Model names of the SSCNET III

cable

MR-J3BUSM25

MR-J3BUSM-A Reinforcement coated cable: 50, Cord: 25

MR-J3BUSM-B Reinforcement coated cable: 50, Cord: 30

Minimum bend radius [mm]

(b) Tension

If tension is exerted on the SSCNET III cable, transmission loss increases because external forces concentrate

on a fixed part of the SSCNET III cable or where the SSCNET III connectors are connected. At worst, the

SSCNET III cable breaks or the SSCNET III connectors are damaged. When laying the cable, handle without

straining tension.

If lateral pressure is exerted on the SSCNET III cable, the cable distorts, the internal optical fibers get stressed,

and transmission loss increases. At worst, the SSCNET III cable may break. Being tied in a bundle also causes

such state. Do not tighten up the SSCNET III cable with bands such as a nylon band (TY-RAP).

Do not trample the cable, let the cable be caught by the door of a control panel or other possible situations.

(d) Twisting

If the SSCNET III cable is twisted, the same stress as that localized lateral pressure or bending exerts is

exerted. Such condition increases transmission loss and at worst, the SSCNET III cable breaks.

(e) Disposal

Hydrogen fluoride or hydrogen chloride gas, corrosive and harmful, may be generated when the optical cable

(cord) used for the SSCNET III cable is incinerated.

When disposing the SSCNET III cable, make a request to a company treating industrial waste which has an

incineration facility for treating hydrogen fluoride and hydrogen chloride gas.

Page 53

CHAPTER 6 INSTALLATION AND WIRING

(f) Wiring the SSCNET III cable

Place the SSCNET III cable in a duct or fix the cable with a band in proximity to the head module to avoid

applying the cable's weight to the SSCNET III connector of the Motion controller.

Secure the following space for wiring.

• If placing in a duct ( Page 35, Section 6.1.2)

• If tying with a band: Give enough slack to the optical cord so that the minimum bend radius is obtained, and

do not twist the cord. When tying the cable in a bundle, fix and hold it in position with cushioning such as a

sponge or rubber which does not contain transitional plasticizers. When adhesive tape is used to tie, it is

recommended that Flame retardant Acetate cloth adhesive tape 570F (Teraoka Seisakusho co.,Ltd.) be

used.

Control panel

Cord Enough slack

Band

Cable

(5) Precautions for wiring

• Use an SSCNET III-dedicated cable.

• The SSCNET III cable has a limit on the cable bend radius. Check the limit of the cable used.

• Place the SSCNET III cable in a duct or fix the cable with a band. If not, the dangling cable may swing or

inadvertently be pulled, resulting in damage to a module or cables or malfunction due to poor contact.

• When laying the SSCNET III cable, do not touch the core of the connector of the cable side or the module

side, and protect it from dirt and dust. If any oil from your hand, or any dirt or dust sticks to the core, it can

increase transmission loss, causing cyclic transmission or transient transmission to fail.

• Hold the connector part when connecting and disconnecting the SSCNET III cable.

• Securely connect the SSCNET III cable connector to a module connector until it clicks.

6.5.3 Precautions

6.5 Wiring to the Head Module

Page 54

Memo

Page 55

CHAPTER 7 PARAMETER SETTING

Double-click.

CHAPTER 7 PARAMETER SETTING

This chapter describes parameter settings of a head module and modules connected to the head module.

Open the setting screens by the following operation using GX Works2.

Project window  [Parameter]  [PLC Parameter]

Set parameters for the entire network (including the head module, the number of servo amplifiers, and the link device assignment settings) to the Motion controller. For details, refer to the following.  Programming Manual (COMMON) for the Motion controller used

Page 56

7.1 PLC Parameters

This section describes the setting screens and the descriptions of PLC parameters.

Setting screen Description

Communication Head Setting

PLC Name Set the label and comment of the head module. 0000H, 0001H Page 56, Section 7.1 (2)

PLC System Set parameters for a system including the head module. 1002H Page 57, Section 7.1 (3)

PLC RAS Set parameters for the RAS function. 300AH Page 58, Section 7.1 (4)

Operation Setting

I/O Assignment Set connection status of each module.

*1 Parameter numbers are used to identify a location where a parameter error has occurred.

Set the operation mode of the head module. 01F0H Page 55, Section 7.1 (1)

Set parameters to transfer data stored in the following head module devices as cyclic data.

• Link special relay (SB)

• Link special register (SW)

• Special relay (SM)

• Special register (SD)

• Link register (W)

Parameter No.

500FH Page 59, Section 7.1 (5)

0400H, 0403H to 0405H, 0409H

Page 63, Section 7.1 (6)

Reference

Page 57

(1) Communication Head Setting

Set the operation mode of the head module.

Project window  [Parameter]  [PLC Parameter]  "Communication Head Setting"

CHAPTER 7 PARAMETER SETTING

The following table shows setting items.

Item Description Setting range

Mode Select a mode for the head module.

Hold PLC diagnostic error history and system error history by POWER-OFF/RESET (Store in Flash ROM)

Select whether to hold PLC diagnostic results and system error history data after the head module is powered off or is reset. Clearing the checkbox will delete data displayed in the "PLC diagnostics" window and the "Error History" window when the head module is powered off or is reset. ( Page 85, Section 11.2 (1) (a), Page 87, Section 11.3)

7.1 PLC Parameters

Online/Offline/Self test (Default: Online)

Selected/not selected (Default: Selected)

Page 58

(2) PLC Name

Set the label and comment of the head module.

Project window  [Parameter]  [PLC Parameter]  "PLC Name"

The following table shows setting items.

Item Description Setting range

Label Enter the label (name or application) of the head module.

Comment Enter the comment of the head module.

Up to 10 characters (Default: Blank)

Up to 64 characters (Default: Blank)

Page 59

(3) PLC System

Set parameters for a system including the head module.

Project window  [Parameter]  [PLC Parameter]  "PLC System"

CHAPTER 7 PARAMETER SETTING

The following table shows setting items.

Items other than "Remote Reset" cannot be set to the head module.

Item Description Setting range

Remote reset Allow Select whether to allow GX Works2 to perform remote reset to the head module.

7.1 PLC Parameters

Selected/not selected (Default: Selected)

Page 60

(4) PLC RAS

Set parameters for the RAS function.

Project window  [Parameter]  [PLC Parameter]  "PLC RAS"

The following table shows setting item.

Items other than "Module Error History Collection (Intelligent Function Module)" cannot be set to the head

module.

Module Error History Collection(Intelligent Function Module)

Item Description Setting range

Collection of intelligent function module error histories is valid.

Select whether to collect errors occurred in an intelligent function module with the head module.

Selected/not selected (Default: Selected)

Page 61

(5) Operation Setting

Head module

In Operation Setting, the following part is configured.

SB/SW/SM/SD

1FFF

Motion

controller

RWw

RWr

RWw

RWr

0000

001F

1000

101F

Operation setting

Set parameters to transfer data stored in the following head module devices as cyclic data.

• Link special relay (SB)

• Link special register (SW)

• Special relay (SM)

• Special register (SD)

• Link register (W)

CHAPTER 7 PARAMETER SETTING

7.1 PLC Parameters

Page 62

Project window  [Parameter]  [PLC Parameter]  "Operation Setting"

The following table shows setting items.

Item Description Setting range

Assignment Method

Dev. Name

Points Enter the points of devices to be transferred.

Start Enter the start number of a device to be transferred.

Select a link device assignment method.

• Points/Start: Enter the points and start numbers of devices.

• Start/End: Enter the start and end device numbers.

Select transfer source devices and transfer target devices. Select "W" for either of the devices.

• Points/Start

• Start/End

(Default: Start/End)

•W

•SB

•SW

•SM

•SD

(Default: Blank)

• W: 1 to 4096

• SB: 16 to 8192

• SW: 1 to 8192

• SM: 16 to 2048

• SD: 1 to 2048

(Default: Blank)

Transfer From

• W: 0 to 1FFF

• SB: 0 to 1FF0

•SW: 0 to 1FFF

• SM: 0 to 2032

• SD: 0 to 2047

(Default: Blank)

Transfer To

• W: 1000 to 1FFF

• SB: 0 to 1FF0

•SW: 0 to 1FFF

• SM: 0 to 2032

• SD: 0 to 2047

(Default: Blank)

Page 63

Item Description Setting range

End Enter the end number of a device to be transferred.

CHAPTER 7 PARAMETER SETTING

Transfer From

• W: 0 to 1FFF

• SB: F to 1FFF

• SW: 0 to 1FFF

• SM: 15 to 2047

• SD: 0 to 2047

(Default: Blank)

Transfer To This item is automatically set according to the setting of transfer source.

7.1 PLC Parameters

Page 64

(a) Setting example

Device

name

(W)

Transfer

0000

000F

RWw

Device

name

(SB)

Transfer From Transfer To

1004

Device

name

(W)

Transfer

101F

0004

001F

0040

01FF

RWr

Device

name

(SB)

Transfer FromTransfer To

Transfer 1

Transfer 2

Operation of the head module

to to to

To transfer the link special relay (SB) data of the head module as cyclic data, transfer the link special relay (SB)

value to link register (W).

Setting for Forwarding Parameter between Devices

Transfer 1: Transfers the values in SB0040 to SB01FF to W1004 to W101F. Transfer 2: Transfers the value in W0000 to SB0000 to SB000F.

Page 65

(6) I/O Assignment

Set connection status of each module.

Project window  [Parameter]  [PLC Parameter]  "I/O Assignment"

CHAPTER 7 PARAMETER SETTING

I/O Assignment

button

The following table shows setting items.

Item Description Setting range

Type Select a connected module type.

Model Name Enter the model name of the connected module when required.

Points Select the occupied I/O points of a module connected to the head module.

Start XY Enter the start I/O number.

button

Error Time Output Mode

PLC Operation Mode at H/W Error

I/O Response Time

button

Set intelligent function module switches. 

Select output mode in the following status:

• An error occurred in the head module.

• A data link error occurred.

Specify whether to stop the auto refresh of the head module or not, when a hardware error occurs (when the head module detects SP.UNIT DOWN) in the intelligent function module.

Select the response time of an input module.

Set the selected head module to I/O Assignment. 

Set the Model Name, Points, and Start XY of the selected module to I/O Assignment.

Empty, Input, Output, Intelligent (Default: Blank)

Up to 16 characters (Default: Blank)

0 Point, 16 Points, 32 Points, 64 Points, 128 Points (Default: Blank)

0000H to 0FF0H (Default: Blank)

Clear/Hold (Default: Clear)

Stop/Continue (Default: Stop)

1ms, 5ms, 10ms, 20ms, 70ms (Default: 10ms)



7.1 PLC Parameters

Page 66

7.2 Intelligent Function Module Parameters

Set intelligent function module parameters.

Set the parameters in the "New Module" window.

Project window  Right-click [Intelligent Function Module]  [New Module]

Item Description Setting range

Module Selection

Mount Position

Title setting Title Enter a title displayed in the Project window.

After these settings are configured, a folder is created under the "Intelligent Function Module" folder in the Project

window.

Module Type Select a module type.

Module Name Select a model name.

Mounted Slot No.

button

Specify start XY address Enter the start I/O number.

Select the number of the slot where an intelligent function module is mounted.

Click this button to check I/O assignment setting configured in the PLC Parameter.

 User's manual for the intelligent function module used

X, Y, and W can be set as an auto refresh device.

Page 67

CHAPTER 8 CYCLIC TRANSMISSION

Motion

controller

Head moduleXInput moduleYOutput moduleYIntelligent

function module

Motion controller Head module

CHAPTER 8 CYCLIC TRANSMISSION

This chapter describes how to perform cyclic transmission of bit and word device data of the head module.

8.1 Cyclic Transmission of Bit Device Data

The inputs (X) and outputs (Y) of the modules connected to the head module can be handled just like those of the

Motion controller.

8.1 Cyclic Transmission of Bit Device Data

Page 68

(1) Data flow

Motion controller

Head module Head module Head module Head module

Station No.1

Station

No.1

Station No.2

Station

No.2

Station No.3

Station

No.3

Station No.4

Station

No.1

Station

No.2

Station

No.3

Station No.4

to 003F

0040

to 006F

0070

to 008F

0090

to 009F

to 003F

0040

to 006F

0070

to 008F

0090

to 009F

RX RX RX

RY RY RY

0000

003F

0000

002F

0000

001F

000F

003F

002F

001F

000F

0000

Station No.4

This section describes the data flow and the setting for cyclic transmission of bit device data.

• When inputting from a head module to the Motion controller: The input data (X) of each module connected to

the head module is input to the remote input (RX) of the Motion controller.

• When outputting from the Motion controller to a head module: The remote output data (RY) of the Motion

controller is output to the output (Y) of each module connected to the head module.

The I/O data flow between the Motion controller and the head module on the station number 1 are shown in Page

67, Section 8.1 (1) (a), Page 68, Section 8.1 (1) (b).

Page 69

CHAPTER 8 CYCLIC TRANSMISSION

(a) When the I/O assignment setting for the head module is default

Motion controller

0000 to 000F

0010 to 001F 0020 to 002F

0030 to 003F

0000 to 000F

0010 to 001F 0020 to 002F

0030 to 003F

RX RX

Station

No.1

RY RY

Station

No.1

0000

003F

0000

003F

Head module

Slot No.

Start I/O No.

Station No.1

Slot 0 Slot 1 Slot 2 Slot 3

0000

16-point

input module

0000 000F

0010

16-point

output module

0000

000F

0000

000F

0020

16-point

input module

0000

000F

0000

000F

0030

16-point

output module

0000 000F

0000

000F

8.1 Cyclic Transmission of Bit Device Data

Page 70

(b) When the I/O assignment setting for the head module is changed

Head module

Station No.1

Motion controller

RX RX

RY RY

0000

003F

16-point

input module

16-point

output module

000F

0000

000F

16-point

input module

16-point

output module

000F

0000

000F

0000

000F

Slot 0 Slot 1 Slot 2 Slot 3 0020

0000

0030

0010

Slot No.

Start I/O No.

0000

000F

0000

000F

0000

0020

to 002F

0030

to 003F

0000

001F

0000

to 000F

0010

to 001F

0020

003F

Station

No.1

Station

No.1

The figure on the bottom shows assignment when I/O Assignment is set in GX Works2 as the figure below.

Page 71

CHAPTER 8 CYCLIC TRANSMISSION

(2) Setting method

In the Head Module window of MT Developer2, set the total number of the input/output (X/Y) points of the

modules connected to the head module in 16-point units.

To match the settings with those in the figure on the previous page, set "RX Link Device" and "RY Link Device" to

"0000" to "003F".

• To set an empty slot in the head module or to change a start I/O number, modify the data in the I/O Assignment setting of the head module with GX Works2.

• If the number of points is going to be increased for a system extension or other reasons, set a large number of "RX Link Device" and "RY Link Device" in the Head Module window of MT Developer2. Doing so will avoid changing the parameter of the Motion controller at the system extension. However, increasing the number of the points lengthens the processing time.

8.1 Cyclic Transmission of Bit Device Data

Page 72

(3) Output status for each status

Depending on the states of the data link and head module, data may not be able to be output.

The following table shows how the states of the data link and head module affect the output (Y).

-: Not dependent on the status

Switch Head module status Data link status Output (Y) status

Varies depending on the status and settings of the Motion controller. ( User's manual for the Motion controller used) (1) If the Motion controller is in the stop error status:

The output (Y) status follows the "Error Time Output Mode" setting in the PLC Parameter. ( Page 63, Section 7.1 (6)) The analog output status of the digital-analog converter module and analog input/output module follows the setting of the analog output HOLD/CLEAR function.

Cyclic

RUN Operating normally

RUN Operating normally Disconnected

transmission in progress

Cyclic transmission stopped

 MELSEC-L Digital-Analog Converter Module User's Manual  MELSEC-L Analog Input/Output Module User's Manual

(2) When the Motion controller is in the STOP status:

The output (Y) turns off. The analog output status of the digital-analog converter module and analog input/output module follows the setting of the analog output HOLD/CLEAR function.

 MELSEC-L Digital-Analog Converter Module User's Manual  MELSEC-L Analog Input/Output Module User's Manual

The refresh device status of the Motion controller is as follows:

• Turns off if "Y" is specified for the CPU side device.

• Holds its status if "other than Y (M, L, etc.)" is specified for the CPU side device.

 MELSEC-L Digital-Analog Converter Module User's Manual  MELSEC-L Analog Input/Output Module User's Manual

The output (Y) status is held for 3.5ms after the communication with the Motion controller is terminated due to a break in the SSCNET III cable or other possible causes. The output (Y) status after disconnection follows the "Error Time Output Mode" setting in the PLC Parameter. ( Page 63, Section 7.1 (6))

 Error 

STOP Operating normally 

The output (Y) status follows the "Error Time Output Mode" setting in the PLC Parameter. ( Page 63, Section 7.1 (6))

The output (Y) turns off. The analog output status of the digital-analog converter module and analog input/output module follows the setting of the analog output HOLD/CLEAR function.

 MELSEC-L Digital-Analog Converter Module User's Manual  MELSEC-L Analog Input/Output Module User's Manual

Page 73

CHAPTER 8 CYCLIC TRANSMISSION

Motion

controller

RWr

RWw

RWr

RWw

Head module Intelligent

function module

Motion controller Head module

Intelligent

function module

Buffer memory,

etc.

Buffer memory,

etc.

8.2 Cyclic Transmission of Word Device Data

Word data, such as the buffer memory of a module connected to the head module, can be used in the word devices of

the Motion controller.

8.2 Cyclic Transmission of Word Device Data

Page 74

(1) Data flow

Motion controller

RWw

RWr

Head module Head module Head module Head module

Station No.1

Station

No.1

Station No.2

Station

No.2

Station No.3

Station

No.3

Station No.4

Station

No.4

Station

No.1

Station

No.2

Station

No.3

Station

No.4

RWw

0000

001F

RWr

0000

RWw

0000

001F

RWw

0000

RWw

0000

000F

001F

000F

RWr

0000

RWr

0000

RWr

0000

0020

0040

0050

to 001F

to 003F

to 004F

to 005F

0000

0020

0040

0050

to 001F

to 003F

to 004F

to 005F

This section describes the data flow and the setting for cyclic transmission of word device data.

• When transferring data from the Motion controller to the head module: The remote register (RWw) data of

the Motion controller is transferred to the buffer memory of an intelligent function module connected to the

head module.

• When transferring data from the head module to the Motion controller: The buffer memory data of the

intelligent function module connected to the head module is transferred to the remote register (RWr) of the

Motion controller.

The data flow between the Motion controller and the head module of station number 1 is shown in Page 73,

Section 8.2 (1) (a).

Page 75

CHAPTER 8 CYCLIC TRANSMISSION

RWr RWr

RWw RWw

0000H

001FH

000FH

0000H

001FH

0000H

001FH

1000H

100FH

0000H

001FH

0000H

001FH

Head module

station No.1

Buffer memory

Motion controller

Slave station

Station

No.1

Analog-digital

converter module

Station

No.1

000FH

101FH

000FH

1 2

1 2 3

(a) When the points of "RWw Link Device" and "RWr Link Device" are set to 32 points in

the Head Module window of MT Developer2

 Set RWw/RWr ranges assigned to the head module in the Head Module window of MT Developer2. ( Page 74, Section 8.2

 RWw0 is assigned from W0.

 Set the refresh range of the buffer memory of the head module and the intelligent function module using the auto refresh setting

(2), procedure 2)

RWr0 is assigned from W1000.

of GX Works2. ( Page 74, Section 8.2 (2), procedure 1)

8.2 Cyclic Transmission of Word Device Data

Page 76

(2) Setting method

1. Set the auto refresh of the intelligent function module connected to the head module with GX

Works2.

Specify the following devices as the devices to be auto refreshed.

Item Setting range of auto refresh target device

"Transfer to PLC" W1000 to W101F

"Transfer to intelligent function module" W0 to W1F

Page 77

CHAPTER 8 CYCLIC TRANSMISSION

2. In the Head Module window of MT Developer2, set the number of RWw/RWr points assigned to the

head module.

The number of points should be higher than the number of points set in the auto refresh setting, in the step 1 above. (Set the number of points whichever is greater between "Transfer to CPU" and "Transfer to intelligent function module".)

If the number of points is going to be increased for a system extension or other reasons, set a large number of "RWw Link Device" and "RWr Link Device" in the Head Module window of MT Developer2. Doing so will avoid changing the parameter of the Motion controller at the system extension. However, increasing the number of the points lengthens the processing time.

8.2 Cyclic Transmission of Word Device Data

Page 78

Memo

Page 79

CHAPTER 9 SSCNET III COMMUNICATION CONDITION MONITOR

CHAPTER 9 SSCNET III COMMUNICATION

CONDITION MONITOR

This chapter describes how to check the location and the cause of an error which has occurred in the network with

SSCNET III Communication Condition Monitor of MT Developer2.

Connect MT Developer2 to the Motion controller to check the connection status of servo amplifiers and head modules

on SSCNET III/H.

(1) Starting the SSCNET III Communication Condition Monitor

This section describes how to start the SSCNET III Communication Condition Monitor.

1. Connect MT Developer2 to the Motion controller.

2. Start the SSCNET III Communication Condition Monitor from the menu of MT Developer2.

[Online]  [Monitor]  [SSCNET III Communication Condition Monitor]

Page 80

(2) Checking errors

Double-click.

This section describes how to check the location of a communication error with SSCNET III Communication

Status Monitor.

(a) When no error occurs

1. Double-click the corresponding head module in the

SSCNET III Communication Condition Monitor

window.

2. The Detail Information window is displayed.

The head module is connected properly.

Page 81

CHAPTER 9 SSCNET III COMMUNICATION CONDITION MONITOR

Double-click.

Click.

(b) When an error occurs

1. Double-click the corresponding head module in the

SSCNET III Communication Condition Monitor

window.

2. The Detail Information window is displayed.

The error code of an error which has occurred is

displayed.

3. Click the button.

4. The Help window for the error is displayed.

Page 82

Memo

Page 83

CHAPTER 10 MAINTENANCE AND INSPECTION

This chapter describes items that must be maintained or inspected daily or periodically to properly use a

programmable controller in optimal condition at all times.

10.1 Daily Inspection

This section describes items that must be inspected daily.

Check box

The modules are securely installed.

The module joint levers are properly locked.

The terminal screws of the modules are properly tightened.

Solderless terminals are physically out of contact and away from each other.

Cable connectors are fully inserted.

The terminal cover of the power supply module is securely attached.

10.1 Daily Inspection

Page 84

10.2 Periodic Inspection

Check box

The ambient temperature is within 0 to 55 C.

The ambient humidity is within 5 to 95%RH.

There is no corrosive gas.

The voltage across 100VAC terminals is within 85V to 132VAC.

The voltage across 200VAC terminals is within the range of 170V to 264VAC.

The voltage across 24VDC terminals is within 15.6V to 31.2VDC.

The modules are securely installed.

No dust or foreign matter is present.

No error has occurred.

This section describes items that must be inspected once or twice every 6 to 12 months.

The items must be inspected as well when the equipment has been relocated or modified, or wiring layout has been

changed.

Page 85

CHAPTER 11 TROUBLESHOOTING

This chapter describes errors that may occur in the head module, causes of the errors, and corrective actions.

11.1 Before Troubleshooting

Check that the POWER LED of the power supply module is on. If it is off, troubleshoot the power supply module described in the manual of the programmable controller CPU. ( MELSEC-L CPU Module User's Manual

(Hardware Design, Maintenance and Inspection))

11.2 Troubleshooting Procedure

The procedure for identifying the cause of the problem and taking action is explained below.

MT Developer2 or GX Works2 is used for this. Connect MT Developer2 to the Motion controller to monitor the entire network status. ( Page 77, CHAPTER 9) If the head module status cannot be monitored due to cable

disconnection or any other error, directly connect GX Works2 to the head module.

This section describes the troubleshooting procedure taken when GX Works2 is directly connected to the head

module.

11.1 Before Troubleshooting

Page 86

(1) Procedure

1. Connect GX Works2 to the head module, and open

the "System Monitor" window.

[Diagnostics]  [System Monitor]

2. Select the module in which an error has occurred.

• When the selected module is the head module ( Page

85, Section 11.2 (1) (a))

• When the selected module is any other than the head

module ( Page 86, Section 11.2 (1) (b))

When data link cannot be performed even though no failure is shown in "System Monitor", check if any error has occurred with SSCNET III Communication Condition Monitor of MT Developer2. ( Page 77, CHAPTER 9)

Page 87

(a) Checking for failure of the head module

1. Selecting the head module in "System Monitor" and

2. Select the error that is occurring, and click the

3. Reset of the head module and errors occurred

4. If data link is not available even after

• Checking with SSCNET III Communication Condition

• Checking the LEDs ( Page 89, Section 11.4)

• Troubleshooting by Symptom ( Page 91, Section 11.5)

CHAPTER 11 TROUBLESHOOTING

clicking the button will open the "PLC

Diagnostics" window.

button to check the cause and action.

When data link cannot be performed even though no

failure is shown in "PLC Diagnostics", open the

SSCNET III Communication Condition Monitor window of MT Developer2 and take action. ( Page 77,

CHAPTER 9)

before power off can be checked in the "Error

History" window.

[Diagnostics]  [System Monitor] 

button

In the single "Error History" window, the error history of

the head module and intelligent function modules can be viewed. ( Page 87, Section 11.3)

troubleshooting by the above operation, perform

the following.

Monitor by connecting MT Developer2 to the Motion controller ( Page 77, CHAPTER 9)

11.2 Troubleshooting Procedure

Page 88

(b) Checking for failure of a module other than the head module

Remark

Displays the latest error code.

Displays the error history.

Displays the details and solution of the error code that is selected in the error history.

1. Select a module other than the head module in the

"System Monitor" window, and click the

or button to view the diagnostics or

detailed information.

2. Reset of the head module and errors occurred

before power off can be checked in the "Error

History" window.

[Diagnostics]  [System Monitor] 

button

In the single "Error History" window, the error history of

the head module and intelligent function modules can be viewed. ( Page 87, Section 11.3)

3. If data link is not available even after

troubleshooting by the above operation, perform

the following.

• Checking the LEDs ( Page 89, Section 11.4)

• Troubleshooting by Symptom ( Page 91, Section 11.5)

By specifying the monitor device in the parameter setting of the Motion controller, the operating status including the error code of an error which has occurred in the head module can be checked by the Device Batch Monitor of the Motion controller. ( MT Developer2 Help)

Page 89

CHAPTER 11 TROUBLESHOOTING

GX Works2

Error history display

19:29 19:33 19:34 19:36

Module A

Head module

Module B Module A

A1 C1 B1 A2

Time Module Error code

Head module

Module B

Module A

Error history of the head module and intelligent function modules connected to the head module

Displays the details and solution of the error selected in "Error History List."

Displays the error history of the module.

11.3 System Error History

The history of the errors that occurred in the past can be checked so that corrective actions can be taken for each of

them. Reset of the head module and errors occurred before power off can be also checked. On a single screen, error

history of not only the head module but also the intelligent function modules installed with the head module can be

checked.

Data of up to 100 errors can be collected. (Once the number of collected error logs exceeds 100, the oldest error logs

and sequentially thereafter will be deleted.)

(1) Checking the error history

1. Open the "Error History" window of GX Works2.

[Diagnostics]  [System Monitor] 

button

The error history is displayed. Check the error and

solution and troubleshoot the problem.

• If error code 9900 is detected, check the error and solution of error code A***H detected at the same time to troubleshoot the problem. Concurrently with error code 9900, error code A***H is also detected.

• If the same error occurred continuously, only the first error record is displayed in the "Error History" window.

• Selecting a module in the "Main Block" area in "System Monitor" and clicking the button will also open the "Error History" window. In this case, only the error history of the module selected in "Main Block" is displayed. For details on errors of intelligent function modules, refer to the following. ( User's manual for the intelligent function module used)

11.3 System Error History

Page 90

(2) Precautions

Select the checkbox.

(a) The time and date of the error are not correctly displayed.

• Check if the Motion controller is connected to the head module. The head module collects time information

from the Motion controller every time the module is connected to SSCNET III/H. If the Motion controller is not

connected to the head module, the time and date of errors will not be displayed correctly. (Initial value:

2000/01/01 00:00:00)

• After the clock information has been acquired from the Motion controller, when the head module is powered

off then on, the clock resumes from the time when the power was last turned off. (The clock pauses during

power off.) Therefore, the data and time of an error that occurred during initial processing may be different

from the actual one.

(b) The error is not correctly displayed.

If errors occurred frequently, "*HST.LOSS*" may be displayed in the "Error Code" column, instead of an error

code.

In "PLC RAS" of PLC Parameter, check if the "Module Error History Collection (Intelligent Function Module)" is

selected. This setting is enabled by performing "Write to PLC" in GX Works2 and resetting the head module or

turning off and then on the power.

If the check box in "Module Error History Collection (Intelligent Function Module)" is cleared, error history data of intelligent function modules are not collected. Clear the check box if a higher operation speed is desired for the head module.

Page 91

CHAPTER 11 TROUBLESHOOTING

11.4 Checking the LEDs

The following describes how to troubleshoot the system by the LEDs.

(1) When the RUN LED turned off

Check item Action

Is the head module installed correctly? Connect the head module to the power supply module again.

If the above action does not solve the problem, perform the unit test on the head module to check for a hardware error. ( Page 44, Section 6.4)

(2) When the RUN LED is flashing

Check item Action

Is the switch of the head module set to RUN? Set the switch of the head module to RUN to start data link.

Is it in the remote STOP status? Cancel the remote STOP and start data link.

Has an error occurred in the head module?

Is the Motion controller in the RUN status?

Was the head module disconnected during STOP of the Motion controller?

From "System Monitor" in GX Works2, identify the cause of the error and take action. ( Page 83, Section 11.2)

Set the Motion controller to the RUN status. If the Motion controller has stopped due to an error, troubleshoot it referring to the manual for the Motion controller. ( User's manual for the Motion controller used)

• Set the Motion controller to the RUN status and reconnect the head module to the network.

• Reset the head module because it retains the STOP status of the Motion controller.

(3) When the ERR. LED turned on

Identify the cause of the error in GX Works2 and take action. ( Page 83, Section 11.2)

(4) When the ERR. LED is flashing

Check item Action

Is the station number set within the range of 1 to 64? Set the station number within the range of 1 to 64.

11.4 Checking the LEDs

Page 92

(5) When the L ERR. LED turned on

Check item Action

• Check that Mitsubishi SSCNET III cables are used. ( User's manual for the

Appropriate SSCNET III cables are used?

Do other stations connected to the head module normally operate? Check the operating status of modules on other stations.

Does the set station number correspond with the setting configured in the Head Module window of MT Developer2?

Is there any noise affecting the system? Check the wiring condition.

Motion controller used)

• Check if the station-to-station distance is 50m or less.

• Check if the SSCNET III cables are not disconnected.

Check the station number setting of each module in the Head Module window of MT Developer2. If a station number different from the setting is set, power off the head module to correct the station number then power on the module again.

If the above action does not solve the problem, perform the unit test on the head module to check for a hardware error. ( Page 44, Section 6.4)

(6) When the REM. LED turned off

Check item Action

Has an error occurred in the head module?

From "System Monitor" in GX Works2, identify the cause of the error and take action. ( Page 83, Section 11.2)

(7) When the REM. LED is flashing

Check item Action

Are any forced I/O data being registered? Cancel the registration.

After execution of "Write to PLC", was the head module reset? Reset the head module.

Page 93

CHAPTER 11 TROUBLESHOOTING

11.5 Troubleshooting by Symptom

Troubleshooting methods are described by symptom. Perform these troubleshooting actions when cyclic and/or

transient transmissions are not possible with the target station even though no error is detected in the head module.

If an error has occurred in an intelligent function module installed with the head module, identify the cause of the error by GX Works2. ( Page 83, Section 11.2)

• Before starting the troubleshooting by symptom, check that the POWER LED of the power supply module is on.

For troubleshooting of the power supply module, refer to  MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection).

• When the troubleshooting by symptom cannot solve the problem: Perform the unit test on the head module to

check for a hardware error. ( Page 44, Section 6.4)

11.5.1 Cyclic transmission cannot be performed.

When cyclic data are not delivered to other stations, or when cyclic data from the Motion controller cannot be received,

use the following troubleshooting methods.

Check item Action

Is the REM. LED of the head module on?

Are the I/O assignment settings of PLC parameter correct? Set the I/O assignment correctly. ( Page 63, Section 7.1 (6))

Is the switch of the head module set to "RUN"? Set the switch of the head module to "RUN".

Is the RUN LED of the head module on?

If the above actions do not solve the problem, check if there is any error in the refresh device setting for the CPU module configured by the Motion controller. ( Programming Manual (COMMON) for the Motion controller used)

If the REM.LED is flashing or off, perform the troubleshooting by the LEDs. ( Page 89, Section 11.4)

If the RUN LED is flashing or off, perform the troubleshooting by the LEDs. ( Page 89, Section 11.4)

11.5.1 Cyclic transmission cannot be performed.

11.5 Troubleshooting by Symptom

11.5.2 Transient transmission cannot be performed.

If transient transmissions are not executable with the target station, check that the station numbers set with the rotary switches of the head module are set correctly. ( Page 20, CHAPTER 2)

Page 94

11.6 Error Code List

This section describes error messages, error conditions, causes, and actions for respective error codes of the head

module.

Errors of the head module are classified by error codes as shown below.

Error code Classification Reference

1 to 10000 Errors of the head module Page 93, Section 11.6 (1)

4000H to 4FFFH Error codes returned to the request source at communications Page 98, Section 11.6 (2)

A000H to AFFFH Errors of SSCNET III/H Page 98, Section 11.6 (3)

Page 95

(1) Error code list (1 to 10000)

The following lists the error messages, error conditions, causes, and actions of the error codes (1 to 10000).

The "Supplementary information" in the "Error and cause" column can be confirmed by any of the following.

• PLC Diagnostics in GX Works2

• Common error information (SD5 to SD15)

• Individual error information (SD16 to SD26)

Error code

1000

1001

1002

1003

1004

1005

1006

1009

1035

1090

110 1

110 2

110 3

110 4

116 1

1310

1311

[HEAD UNIT DOWN] The head module is running away or faulty.

• Malfunction due to noise

• Hardware failure

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• Any time

[HEAD UNIT DOWN] The head module is running away or faulty.

• Malfunction due to noise

• Hardware failure

■Supplementary information

• Common information: 

• Individual information: Breakdown information

■Diagnostic timing

• Any time

[RAM ERROR] The RAM built in the head module is faulty.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When powered on or reset

[RAM ERROR] The data in the device memory built in the head module were overwritten.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• Any time

[I/O INT. ERROR] An interrupt occurred even though there is no module that can issue an interrupt.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When an interrupt occurred

[I/O INT. ERROR] An interrupt request from a module installed with the head module was detected.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When an interrupt occurred

Error and cause Action

CHAPTER 11 TROUBLESHOOTING

Take action against noise, and reset the module. If this error occurs again, the hardware of the head module may be faulty. (Please consult your local Mitsubishi representative.)

The hardware of any of the installed modules is faulty. Check the installed modules, and replace the faulty module. (Please consult your local Mitsubishi representative.)

11.6 Error Code List

Page 96

Error code

1401

1403

1500

1610

1700

1710

Error and cause Action

[SP. UNIT DOWN]

• In the initial processing, no response is returned from the intelligent function module.

• The buffer memory size of the intelligent function module is abnormal.

• A module which is not supported is connected.

• No response is returned from the intelligent function module.

• When the error occurs, the start I/O number of the corresponding intelligent function module is stored in the common information area.

■Supplementary information

• Common information: Module No. (Slot No.)

• Individual information: 

■Diagnostic timing

• When powered on, reset, or accessing an intelligent function module

[SP. UNIT DOWN]

• No response is returned from the intelligent function module.

• An error occurred in an intelligent function module was detected.

• Any of the I/O modules (including intelligent function modules) is being disconnected during its operation, or was disconnected.

■Supplementary information

• Common information: Module No. (Slot No.)

• Individual information: 

■Diagnostic timing

•Any time

[AC/DC DOWN]

• Momentary supply power failure occurred.

• The supply power turned off.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

•Any time

[FLASH ROM ERROR] The number of writes to the flash ROM exceeded 100,000 times. (Number of writes > 100,000)

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When writing data to ROM

[BUS TIMEOUT ERR.] Failure of the system bus was detected.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

•Any time

[UNIT BUS ERROR]

• Failure of the system bus was detected.

• Failure of a connected module was detected.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

•Any time

When a module which is not supported is connected, disconnect the module. When the connected module is supported, reset the head module. If this error occurs again, the hardware of the head module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

Check the supply power.

• Replace the head module.

• In "Communication Head Setting" of PLC Parameter, clear the check box so that data of the error history and system error history will not be held at the time of power off or reset.

Reset the head module. If this error occurs again, this module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

Page 97

CHAPTER 11 TROUBLESHOOTING

Error code

1720

1730

2030

2031

2040

2100

2107

Error and cause Action

[END COVER ERR.] Failure of the END cover was detected.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When powered on or reset

[SYSTEM RST ERR.] Failure of the system bus was detected.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When powered on or reset

[NO END COVER] There is no END cover.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When powered on or reset

[NO END COVER] There is no END cover.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• Any time

[UNIT BAD CONNECT]

• The information is different from the I/O module information at the time of power on.

• Any of the I/O modules (including intelligent function modules) is being disconnected during its operation, or was disconnected.

■Supplementary information

• Common information: Module No. (Slot No.)

• Individual information: 

■Diagnostic timing

• Any time

[SP. UNIT LAY ERR.]

• In "I/O Assignment" of PLC Parameter, "Intelligent" is set for the position of an I/O module. Or vice versa.

• In "I/O Assignment" of PLC Parameter, the intelligent function module switch setting is set for the module that does not support it.

• In "I/O Assignment" of PLC Parameter, the number of points smaller than that of the actual intelligent function module is assigned.

■Supplementary information

• Common information: Module No. (Slot No.)

• Individual information: 

■Diagnostic timing

• When powered on or reset

[SP

. UNIT LAY ERR.] A start X/Y set in "I/O Assignment" of PLC Parameter is overlapped with that of another module.

■Supplementary information

• Common information: Module No. (Slot No.)

• Individual information: 

■Diagnostic timing

• When powered on or reset

• Replace the END cover.

• Reset the head module.

If this error occurs again, the hardware of the head module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

• Install an END cover.

• Check if the modules are correctly connected, referring to the configuration of the modules in the System Monitor dialog box.

• Reset the head module.

If this error occurs again, the hardware of the head module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

• Read common information on the error using GX Works2, check the module corresponding to the value (module No.), and replace the module.

• Monitor SD1400 to SD1431 on GX Works2, check the module corresponding to the bit indicating "1", and replace the module.

• Reset the head module.

If this error occurs again, the hardware of the head module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

• Correct the I/O Assignment setting of PLC Parameter, according to the actual condition of the intelligent function module(s) and head module.

• In "I/O Assignment" of PLC Parameter, delete the intelligent function module switch settings.

Correct the I/O Assignment setting of PLC Parameter, according to the actual condition of the intelligent function module(s) and I/O module(s).

11.6 Error Code List

Page 98

Error code

2124

2125

2170

3000

3001

3004

3300

3301

Error and cause Action

[SP. UNIT LAY ERR.]

• The number of connected modules exceeded 10.

• A module is installed in the position corresponding to the I/O points of 4096 or greater.

• A module is installed across the boundary of 4096 I/O points.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When powered on or reset

[SP. UNIT LAY ERR.]

• An inappropriate module was installed.

• No response is returned from the intelligent function module.

■Supplementary information

• Common information: Module No. (Slot No.)

• Individual information: 

■Diagnostic timing

• When powered on or reset

[SYSTEM LAY ERR.] An inappropriate module was installed.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• When powered on or reset

[PARAMETER ERROR] In PLC Parameter, the number of points for empty slots is not set within the range allowed for the head module.

■Supplementary information

• Common information: File name/Drive name

• Individual information: Parameter No.

■Diagnostic timing

• When powered on or reset, or when writing to PLC

[PARAMETER ERROR] The parameters are corrupted.

■Supplementary information

• Common information: File name/Drive name

• Individual information: Parameter No.

■Diagnostic timing

• When powered on or reset, or when writing to PLC

[PARAMETER ERROR] The parameter file is incorrect. Or, the contents of the file are not parameters.

■Supplementary information

• Common information: File name/Drive name

• Individual information: Parameter No.

■Diagnostic timing

• When powered on or reset, or when writing to PLC

[SP

. PARA ERROR] The start I/O number for the intelligent function module set in GX Works2 is different from the actual one.

■Supplementary information

• Common information: File name/Drive name

• Individual information: Parameter No.

■Diagnostic timing

• When powered on or reset, or when writing to PLC

[SP. PARA ERROR]

• Auto refresh parameters for the intelligent function module are out of range.

• The intelligent function module set in GX Works2 is different from the actually installed module.

■Supplementary information

• Common information: File name/Drive name

• Individual information: Parameter No.

■Diagnostic timing

• When powered on or reset, or when writing to PLC

• Reduce the number of connected modules to 10 or less.

• Remove the module installed in the position corresponding to the I/O points of 4096 or greater.

• Replace the end module with a module so that the number of occupied points does not exceed 4096.

• Reset the head module.

If this error occurs again, the hardware of the head module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

• Install an appropriate module.

• Reset the head module.

If this error occurs again, the hardware of the head module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

• Disconnect the inappropriate module.

• Reset the head module.

If this error occurs again, the hardware of the head module, I/O module, intelligent function module, or END cover may be faulty. (Please consult your local Mitsubishi representative.)

• Read detailed error information using GX Works2, and check and correct the parameter corresponding to the value (parameter No.).

• Write the corrected parameters to the head module again, and reset or reapply power to the head module.

If this error occurs again, the hardware of the head module may be faulty. (Please consult your local Mitsubishi representative.)

• Read detailed error information using GX Works2, and check and correct the parameter corresponding to the value (parameter No.).

• Write the corrected parameters to the head module again, and reset or reapply power to the head module.

If this error occurs again, the hardware of the head module may be faulty. (Please consult your local Mitsubishi representative.)

Check if the type of the parameter file is shown as "***.QPA" and if the file contains parameters.

Correct the parameter setting.

Page 99

CHAPTER 11 TROUBLESHOOTING

Error code

3302

5000

5001

9900

Error and cause Action

[SP. PARA ERROR] Intelligent function module parameters are not normal.

■Supplementary information

• Common information: File name/Drive name

• Individual information: Parameter No.

■Diagnostic timing

• When powered on or reset, or when writing to PLC

[WDT ERROR]

• I/O refresh processing time exceeded 200ms.

• Momentary power failure occurred frequently.

■Supplementary information

• Common information: Time (200ms)

• Individual information: Time (value actually measured)

■Diagnostic timing

• Any time

[NETWORK ERROR] A SSCNET III/H error has occurred.

■Supplementary information

• Common information: 

• Individual information: 

■Diagnostic timing

• Any time

Correct the parameter setting.

Modify the power supply system to prevent momentary power failure.

• Check the detailed module failure by the SSCNET III Communication Condition Monitor of MT Developer2, and take action according to the display.

• In the system error history of System Monitor, confirm the error code of the network error detected at the time.

11.6 Error Code List

Page 100

(2) Error code list (4000H to 4FFFH)

If an error occurs at communication request from GX Works2 or an intelligent function module, the head module

returns the error code (any of 4000H to 4FFFH) to the request source. This error code is not stored in SD0

because the error is not the one detected by the self-diagnostic function of the head module.

When the request source is GX Works2, a message and an error code are displayed on GX Works2. When the

request source is an intelligent function module, the head module returns an error code to the request source.

For messages, details, causes, and actions of errors, refer to the following.  User's Manual for the programmable controller CPU used (Hardware Design, Maintenance and Inspection)

(3) Error code list (A000H to AFFFH)

The following lists the error messages, error conditions, causes, and actions of the error codes (A000H to

AFFFH).

Error code Error Action

A0B0

A0B1

A0B3

A0B4

A0B5

A0B7

A0B8 Target module access failure

A0B9 Target module access failure

A0BD Time information mismatch

A0E3 Own station No. out of range Set the station number setting switch within 1 to 64 range.

A62E Motion controller lost

Not supported Motion SFC request is received.

Start I/O number of RTO/RFROM command is out of range.

There is no buffer memory in the target module specified by the Motion SFC programs.

Buffer memory address specified by the Motion SFC programs is out of range.

Module is not installed to the start I/O number specified by the Motion SFC programs.

• At the Motion controller side, set the Motion SFC request destination to station other than the head module.

• At the Motion controller side, change the Motion SFC command to the one supported by the head module.

• Set the Motion SFC request destination to station other than the head module.

• At the Motion controller side, change the Motion SFC command to the one supported by the head module.

Set the start I/O number of the target module correctly using the Motion SFC programs.

• Set the start I/O number of the module which has a buffer memory using the Motion SFC programs.

• At head module side, install an intelligent function module which has a buffer memory to the start I/O number specified by the Motion SFC programs.

Set the buffer memory address specified by the Motion SFC programs within the range.

• Set start I/O number where the module is installed using the Motion SFC programs.

• Install the intelligent function module to the start I/O number specified by the Motion SFC programs.

• Confirm the installation condition of the intelligent function module of the communication target, then execute the communication again with the target intelligent function module using Motion SFC programs.

• If the error occurs again, exchange the intelligent function module of the communication target.

Correct the time information setting at the Motion controller side and write it again. (Time information of the head module will be updated when reconnecting with the Motion controller)

Communication with the Motion controller was lost.

• Check if there are overlapping station numbers in the network.

• Check if 0 (for reservation) is set for the axis No. corresponding to the station number of own station.

• Check that the station number of the head module corresponds with the setting in the Head Module window of MT Developer2.

• Check that no error has occurred in the Motion controller by connecting or disconnecting cables during communication.

• Check the wiring for cable disconnection.

Mitsubishi Electric MELSEC-L SSCNETIII/H 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

TERM

PACKING LIST

CHAPTER 1 HEAD MODULE

CHAPTER 2 PART NAMES

CHAPTER 3 SPECIFICATIONS

3.1 General Specifications

3.2 Performance Specifications

3.3 Function List

CHAPTER 4 PROCEDURES BEFORE OPERATION

CHAPTER 5 SYSTEM CONFIGURATION

5.1 Head Module System Configuration

5.2 Applicable Systems

CHAPTER 6 INSTALLATION AND WIRING

6.1.2 Installation position

6.1 Wiring Environment and Installation Position

6.1.1 Installation environment

6.2 Installation

6.2.1 Connecting modules

6.2.2 Mounting the modules on a DIN rail

6.2.3 Changing modules on a DIN rail

6.3 Wiring to the Power Supply Modules

6.4 Testing the Head Module Before Wiring

6.5 Wiring to the Head Module

6.5.1 Wiring

6.5.2 Grounding

6.5.3 Precautions

CHAPTER 7 PARAMETER SETTING

7.1 PLC Parameters

7.2 Intelligent Function Module Parameters

CHAPTER 8 CYCLIC TRANSMISSION

8.1 Cyclic Transmission of Bit Device Data

8.2 Cyclic Transmission of Word Device Data

CHAPTER 9 SSCNET III COMMUNICATION CONDITION MONITOR

CHAPTER 10 MAINTENANCE AND INSPECTION

10.1 Daily Inspection

10.2 Periodic Inspection

CHAPTER 11 TROUBLESHOOTING

11.2 Troubleshooting Procedure

11.1 Before Troubleshooting

11.3 System Error History

11.4 Checking the LEDs

11.5.1 Cyclic transmission cannot be performed.

11.5 Troubleshooting by Symptom

11.5.2 Transient transmission cannot be performed.

11.6 Error Code List