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Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual

Melsec-l series, head module
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MELSEC-L SSCNET/H Head Module
User's Manual
-LJ72MS15

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Summary of Contents for Mitsubishi Electric MELSEC-L SSCNETIII/H

  • Page 1 MELSEC-L SSCNET/H Head Module User's Manual -LJ72MS15...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS (Read these precautions before using this product.) Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly. In this manual, the safety precautions are classified into two levels: " WARNING"...
  • 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.
  • 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 ●...
  • Page 6 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.
  • 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.

  • Page 8: Conditions Of Use For The Product

    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.

  • Page 9: Introduction

    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...

  • Page 10: Relevant Manuals

    RELEVANT MANUALS (1) Motion controller relevant manuals For Motion controllers, refer to the following. Manual name Description <manual number (model code)> Specifications of the Motion CPU modules, Q172DLX servo external signal interface module, Q172DEX synchronous encoder interface module, Q173D(S)CPU/Q172D(S)CPU Motion controller User's Manual Q173DPX manual pulse generator interface module, power supply modules, <IB-0300133, 1XB927>...
  • Page 11 Memo...

  • Page 12: Table Of Contents

    CONTENTS CONTENTS SAFETY PRECAUTIONS ............. 1 CONDITIONS OF USE FOR THE PRODUCT .
  • Page 13 CHAPTER 8 CYCLIC TRANSMISSION Cyclic Transmission of Bit Device Data ......... . 65 Cyclic Transmission of Word Device Data .

  • Page 14: Manual Page Organization

    MANUAL PAGE ORGANIZATION In this manual, pages are organized and the symbols are used as shown below. The following illustration is for explanation purpose only, and should not be referred to as an actual documentation. "" is used for screen names and items. The chapter of the current page is shown.

  • Page 15: Term

    TERM Unless otherwise specified, this manual uses the following terms. Term Description Buffer memory A memory in an intelligent function module, where data (such as setting values and monitoring values) are stored A function by which data are periodically exchanged among stations on the same network using link devices (RX, RY, Cyclic transmission RWw, and RWr) Data link...

  • Page 16: Packing List

    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

    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.
  • Page 19 CHAPTER 1 HEAD MODULE (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).
  • 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 CHAPTER 1 HEAD MODULE Memo...

  • Page 22: Chapter 2 Part Names

    CHAPTER 2 PART NAMES This chapter describes each part and name of the head module. Name Description  Indicates the operating status. 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.) RUN LED Flashing •...
  • Page 23 CHAPTER 2 PART NAMES Name Description 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).
  • Page 24 Name Description Rotary switches used to set the station number. Example: To set the station number to 15, arrange the switches as follows. Set the tens place of the station number to "x10". Station number setting switch Set the ones place of the station number to "x1". •...
  • Page 25 CHAPTER 2 PART NAMES Remark • 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. Stopper Pull the cover so that the stopper will be set...

  • Page 26: Chapter 3 Specifications

    CHAPTER 3 SPECIFICATIONS This chapter describes the specifications of the head module. General Specifications Item Specifications Operating ambient 0 to 55 temperature Storage ambient -25 to 75 temperature Operating ambient humidity 5 to 95%RH, non-condensing Storage ambient humidity Constant Frequency Half amplitude Sweep count acceleration...

  • Page 27: Performance Specifications

    CHAPTER 3 SPECIFICATIONS Performance Specifications Item Specifications Maximum link RWr, RX 256 bytes in total points per RWw, RY 256 bytes in total network RWr, RX 64 bytes in total Maximum link points per station RWw, RY 64 bytes in total Communication speed 150Mbps Communication cycle:...
  • Page 28 Item Specifications 4096 points, 512 bytes (Number of points accessible to the actual module) Number of I/O points 4096 points, 512 bytes (Number of points accessible to the actual module) 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, 1KB...

  • Page 29: Function List

    CHAPTER 3 SPECIFICATIONS Function List The following table lists the functions of the head module. Function Description Reference The inputs/outputs of modules connected to the head module can be handled just like those Cyclic transmission Page 65, CHAPTER 8 of the Motion controller. The buffer memory of intelligent function modules can be accessed directly from the Motion Programming Manual controller.
  • Page 30 Memo...

  • Page 31: Chapter 4 Procedures Before Operation

    CHAPTER 4 PROCEDURES BEFORE OPERATION 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. Checkbox System consideration  Page 31, CHAPTER 5, Page 65, CHAPTER 8 Consider the system configuration and link device assignment.
  • Page 32 Network diagnostics  Page 77, CHAPTER 9 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

    CHAPTER 5 SYSTEM CONFIGURATION 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 Head Module System Configuration The following shows system configuration using a head module. SSCNET III/H I/O module or Power supply module...

  • Page 34: Applicable Systems

    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 •...
  • 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 R64MTCPU Q172DSCPU Q173DSCPU Stand-alone Motion controller Q170MSCPU To connect the head module to the Motion controller, set the communication type of the Motion controller to "SSCNET III/H".
  • Page 36 Memo...

  • Page 37: Chapter 6 Installation And Wiring

    CHAPTER 6 INSTALLATION AND WIRING CHAPTER 6 INSTALLATION AND WIRING This chapter describes the installation and wiring of modules. 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 38: Installation

    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 •...

  • Page 39: Connecting Modules

    CHAPTER 6 INSTALLATION AND WIRING 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 To release the module joint levers located at the top and bottom of the head module:...
  • 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.

  • Page 41: Mounting The Modules On A Din Rail

    CHAPTER 6 INSTALLATION AND WIRING 6.2.2 Mounting the modules on a DIN rail 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.
  • Page 42 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. Hitch the hook to bottom of the DIN rail Hitch the upper hook of the DIN rail stopper to the Hitch the hook to top of the DIN rail.
  • Page 43 CHAPTER 6 INSTALLATION AND WIRING 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) •...

  • Page 44: Changing Modules On A Din Rail

    6.2.3 Changing modules on a DIN rail 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. Remove the DIN rail stopper on the right edge. Pull down DIN rail hooks on the back of the modules.
  • Page 45 CHAPTER 6 INSTALLATION AND WIRING Slide the modules and plug the connectors. Lock the module joint levers. Slide the levers toward the back side of the module until they click. Lock the DIN rail hooks and attach the DIN rail stopper.

  • Page 46: Wiring To The Power Supply Modules

    Wiring to the Power Supply Modules 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) 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. Connect the modules as shown left.
  • Page 47 CHAPTER 6 INSTALLATION AND WIRING Connect the CNA connector and the CNB connector of the head module with an SSCNET III cable. SSCNET III cable Reset the head module or turn off and on the power supply. or power off and on Unit test begins.

  • Page 48: Wiring To The Head Module

    Wiring to the Head Module 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 Power off the target device to be connected and the...
  • Page 49 CHAPTER 6 INSTALLATION AND WIRING (b) Disconnecting the cable Power off the external devices connected to the head module, and the head module. Disconnect the SSCNET III cable holding the knob of the cable connector.

  • Page 50: Grounding

    6.5.2 Grounding 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. Programmable Programmable Programmable...

  • Page 51: Precautions

    CHAPTER 6 INSTALLATION AND WIRING 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.
  • 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.
  • 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.
  • Page 54 Memo...

  • Page 55: Chapter 7 Parameter Setting

    CHAPTER 7 PARAMETER SETTING 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] Double-click.

  • Page 56: Plc Parameters

    PLC Parameters This section describes the setting screens and the descriptions of PLC parameters. Setting screen Description Reference Parameter No. Communication Head Set the operation mode of the head module. 01F0H Page 55, Section 7.1 (1) Setting PLC Name Set the label and comment of the head module. 0000H, 0001H Page 56, Section 7.1 (2) PLC System...
  • Page 57 CHAPTER 7 PARAMETER SETTING (1) Communication Head Setting Set the operation mode of the head module. Project window  [Parameter]  [PLC Parameter]  "Communication Head Setting" The following table shows setting items. Item Description Setting range Online/Offline/Self test Mode Select a mode for the head module.
  • 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 Up to 10 characters Label Enter the label (name or application) of the head module. (Default: Blank) Up to 64 characters Comment...
  • Page 59 CHAPTER 7 PARAMETER SETTING (3) PLC System Set parameters for a system including the head module. Project window  [Parameter]  [PLC Parameter]  "PLC System" The following table shows setting items. Items other than "Remote Reset" cannot be set to the head module. Item Description Setting range...
  • 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.
  • Page 61 CHAPTER 7 PARAMETER SETTING (5) 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) •...
  • Page 62 Project window  [Parameter]  [PLC Parameter]  "Operation Setting" The following table shows setting items. Item Description Setting range Select a link device assignment method. • Points/Start Assignment Method • Points/Start: Enter the points and start numbers of devices. •...
  • Page 63 CHAPTER 7 PARAMETER SETTING Item Description Setting range Transfer From • W: 0 to 1FFF • SB: F to 1FFF • SW: 0 to 1FFF • SM: 15 to 2047 Enter the end number of a device to be transferred. •...
  • Page 64 (a) Setting example 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 CHAPTER 7 PARAMETER SETTING (6) I/O Assignment Set connection status of each module. Project window  [Parameter]  [PLC Parameter]  "I/O Assignment" The following table shows setting items. Item Description Setting range Empty, Input, Output, Intelligent Type Select a connected module type. (Default: Blank) Up to 16 characters Model Name...

  • Page 66: Intelligent Function Module Parameters

    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 Type Select a module type. Module Selection Module Name Select a model name.

  • Page 67: Chapter 8 Cyclic Transmission

    CHAPTER 8 CYCLIC TRANSMISSION CHAPTER 8 CYCLIC TRANSMISSION This chapter describes how to perform cyclic transmission of bit and word device data of the head module. 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.
  • Page 68 (1) Data flow 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. •...
  • Page 69 CHAPTER 8 CYCLIC TRANSMISSION (a) When the I/O assignment setting for the head module is default Slot No. Slot 0 Slot 1 Slot 2 Slot 3 Start I/O No. 0000 0010 0020 0030 Motion controller Head module 16-point 16-point 16-point 16-point Station No.1 input module...
  • Page 70 (b) When the I/O assignment setting for the head module is changed The figure on the bottom shows assignment when I/O Assignment is set in GX Works2 as the figure below. Slot No. Slot 0 Slot 1 Slot 2 Slot 3 Start I/O No.
  • 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"...
  • 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...

  • Page 73: Cyclic Transmission Of Word Device Data

    CHAPTER 8 CYCLIC TRANSMISSION 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. Motion controller Head module Head module Intelligent Intelligent...
  • Page 74 (1) Data flow 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.
  • Page 75 CHAPTER 8 CYCLIC TRANSMISSION (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 Slave station Motion controller Head module Analog-digital station No.1 converter module Buffer memory 0000 0000...
  • Page 76 (2) Setting method 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"...
  • Page 77 CHAPTER 8 CYCLIC TRANSMISSION 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.
  • Page 78 Memo...

  • Page 79: Chapter 9 Sscnet Iii Communication Condition Monitor

    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.
  • Page 80 (2) Checking errors This section describes how to check the location of a communication error with SSCNET III Communication Status Monitor. (a) When no error occurs Double-click the corresponding head module in the SSCNET III Communication Condition Monitor window. Double-click. The Detail Information window is displayed.
  • Page 81 CHAPTER 9 SSCNET III COMMUNICATION CONDITION MONITOR (b) When an error occurs Double-click the corresponding head module in the SSCNET III Communication Condition Monitor window. Double-click. The Detail Information window is displayed. The error code of an error which has occurred is displayed.
  • Page 82 Memo...

  • Page 83: Chapter 10 Maintenance And Inspection

    CHAPTER 10 MAINTENANCE AND INSPECTION 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.

  • Page 84: Periodic Inspection

    10.2 Periodic Inspection 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. Check box The ambient temperature is within 0 to 55 C.

  • Page 85: Chapter 11 Troubleshooting

    CHAPTER 11 TROUBLESHOOTING 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.
  • Page 86 (1) Procedure Connect GX Works2 to the head module, and open the "System Monitor" window. [Diagnostics]  [System Monitor] Select the module in which an error has occurred. • When the selected module is the head module ( Page 85, Section 11.2 (1) (a)) •...
  • Page 87 CHAPTER 11 TROUBLESHOOTING (a) Checking for failure of the head module Selecting the head module in "System Monitor" and clicking the button will open the "PLC Diagnostics" window. Select the error that is occurring, and click the 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...
  • Page 88 (b) Checking for failure of a module other than the head module Select a module other than the head module in the "System Monitor" window, and click the button to view the diagnostics or detailed information. Displays the latest error code. Displays the error history.

  • Page 89: System Error History

    CHAPTER 11 TROUBLESHOOTING 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.
  • Page 90 (2) Precautions (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.

  • Page 91: Checking The Leds

    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 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 Motion controller used) Appropriate SSCNET III cables are used? • Check if the station-to-station distance is 50m or less. •...

  • Page 93: Troubleshooting By Symptom

    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 94: Error Code List

    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...
  • Page 95 CHAPTER 11 TROUBLESHOOTING (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. •...
  • Page 96 Error Error and cause Action code [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. When a module which is not supported is connected, disconnect the module.
  • Page 97 CHAPTER 11 TROUBLESHOOTING Error Error and cause Action code [END COVER ERR.] Failure of the END cover was detected. ■Supplementary information 1720 • Common information:  • Individual information:  • Replace the END cover. ■Diagnostic timing • Reset the head module. •...
  • Page 98 Error Error and cause Action code • Reduce the number of connected modules to 10 or less. [SP. UNIT LAY ERR.] • Remove the module installed in the position corresponding to the I/O points of • The number of connected modules exceeded 10. 4096 or greater.
  • Page 99 CHAPTER 11 TROUBLESHOOTING Error Error and cause Action code [SP. PARA ERROR] Intelligent function module parameters are not normal. ■Supplementary information 3302 • Common information: File name/Drive name Correct the parameter setting. • Individual information: Parameter No. ■Diagnostic timing • When powered on or reset, or when writing to PLC [WDT ERROR] •...
  • 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.
  • Page 101 CHAPTER 11 TROUBLESHOOTING Error code Error Action • A malfunction may have occurred due to noise. Check the wire and cable distances and grounding condition of each device, and take measures against noise. AA15 Head module failure • Execute a unit test for the head module. If a failure is detected again, the hardware of the head module may be faulty.
  • Page 102 Memo...

  • Page 103: Appendices

    APPENDICES APPENDICES Appendix 1 Forced On/Off for External I/O This section describes the function that forcibly turns on or off the external input/output of the head module. (1) Input/output operation when a forced on/off operation is performed Three types of forced on/off operations are available as shown in the following table. The following table shows the status of input (X) and output (Y) when a forced on/off operation is performed.
  • Page 104 (a) Number of devices that can be registered Up to 32 devices in total can be registered. (b) Checking the execution status • "Forced Input Output Registration/Cancellation" window of GX Works2 • The on status of the 0 bit in debug function usage (SD840) (c) Status of devices after forced on/off registration data are canceled When the on/off registration information of the following input (X) and output (Y) are canceled, the forced on/off status is retained.
  • Page 105 APPENDICES (2) Operating procedure Open the "Forced Input Output Registration/Cancellation" window. [Debug]  [Forced Input Output Registration/Cancellation...] Enter the target device to the "Device" column. The setting range in the "Device" column is X0 to X1FFF or Y0 to Y1FFF. Click the button for the intended operation.
  • Page 106 Memo...

  • Page 107: Appendix 2 Remote Operation

    APPENDICES Appendix 2 Remote Operation Remote operation (RUN, STOP, and RESET operations) can be performed from GX Works2 to the head module. Connect GX Works2 to the head module. Display the "Remote Operation" window from the menu of GX Works2. [Online] ...
  • Page 108 Remark The "Remote Operation" window can be displayed from the "PLC diagnostics" window of GX Works2 as well. ( Page 83, Section 11.2) 1. Put the cursor on the LED display. 2. Click "Remote Operation" displayed on the right.

  • Page 109: Appendix 3 End Cover

    APPENDICES Appendix 3 END Cover This section describes the specifications of the END cover. For specifications of the END cover with ERR terminal (L6EC-ET), refer to the following.  MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) (1) Part names Do not remove this label as it is for maintenance.
  • Page 110 Memo...

  • Page 111: Appendix 4 Link Special Relay (Sb) List

    APPENDICES Appendix 4 Link Special Relay (SB) List The link special relay (SB) is turned on/off depending on various factors occurred in data link. Any error status of the data link can be confirmed by monitoring it. (1) Areas turned on/off by the system and a user •...
  • Page 112 Memo...

  • Page 113: Appendix 5 Link Special Register (Sw) List

    APPENDICES Appendix 5 Link Special Register (SW) List In the link special register (SW), data link information is stored as numerical values. By monitoring it, faulty areas and their causes can be checked. (1) Areas to which data are stored by the system and a user •...
  • Page 114 Memo...

  • Page 115: Appendix 6 Special Relay (Sm) List

    APPENDICES Appendix 6 Special Relay (SM) List The special relay (SM) is an internal relay whose application is fixed in the programmable controller. However, it can be turned on/off as needed to control the head module. The following table shows how to read the special relay list. Item Description Special relay number...
  • Page 116 (1) Diagnostic information Set by Name Description Details (Set timing) OFF: No error • Turns on if the diagnostics results in an error. Diagnostic error ON: Error occurs • Stays on even if the normal state is restored. OFF: No self-diagnostic Self-diagnostic error •...

  • Page 117: Appendix 7 Special Register (Sd) List

    APPENDICES Appendix 7 Special Register (SD) List The special register (SD) is an internal register whose application is fixed in the programmable controller. However, data can be written to the special register to control the head module as needed. Data is stored in binary format if not specified.
  • Page 118 (1) Diagnostic information Set by Name Description Details (Set timing) • Stores the error code for the error that occurred during diagnostics. Diagnostic error Diagnostic error code • This is the same data as the latest information in error history and system error history.
  • Page 119 APPENDICES Set by Name Description Details (Set timing) • Stores common information corresponding to the error code (SD0). • There are three types of information that are stored. • The type of error common information can be identified by SD4 "common information category code".
  • Page 120 Set by (Set Name Description Details timing) • Stores individual information corresponding to the error code (SD0). SD16 • There are six types of information that are stored. • The type of error individual information can be identified by SD4 "individual information category code".
  • Page 121 APPENDICES Set by (Set Name Description Details timing) Continued from the 3) 4) Parameter No. SD16 Number Meaning SD16 Parameter No. 5 SD17 SD17 SD18 SD19 SD20 SD21 (Empty) SD22 SD18 SD23 SD24 SD25 SD26 SD19 *5 For details on parameter No., refer to the following. ...
  • Page 122 (2) System information Set by (Set Name Description Details timing) Stores the switch status of the head module. Status of Head module SD200 0: RUN switch switch status (Switch change) 1: STOP/RESET • Stores one of the following statuses for the LED of the head module in the following bit pattern.
  • Page 123 APPENDICES Set by (Set Name Description Details timing) SD286 Number of points assigned for M This register stores the number of M (for extension) points (fixed to 0). SD287 (For extension) Device assignment SD288 Number of points assigned for B This register stores the number of B (for extension) points (fixed to 0).
  • Page 124 (3) Drive information Set by (Set Name Description Details timing) Parameter Write (transfer) Stores the progress of writing (transferring) to the parameter memory (flash ROM) in SD681 memory write status display percentage (0 to 100%). "0" is set when the write (transfer) command is issued. (transfer) status (percent) SD682...
  • Page 125 APPENDICES Memo...

  • Page 126: Appendix 8 Emc And Low Voltage Directives

    Manufacturers who recognize their products are compliant to the EMC and Low Voltage Directives are required to attach a "CE mark" on their products. (1) Authorized representative in Europe Authorized representative in Europe is shown below. Name: MITSUBISHI ELECTRIC EUROPE B.V. Address: Mitsubishi-Electric-Platz 1, 40882 Ratingen, Germany Appendix 8.1 Requirements for compliance with the EMC Directive The EMC Directive specifies that "products placed on the market must be so constructed that they do not cause...
  • Page 127 APPENDICES (b) Regulations regarding immunity Specification Test item Test details Standard value Immunity test in which EN61000-4-2 Electrostatic discharge • 8kV Air discharge electrostatic is applied to the • 4kV Contact discharge immunity cabinet of the equipment 80% AM modulation@1kHz EN61000-4-3 Radiated, radio- Immunity test in which electric •...
  • Page 128 (b) Wiring of power cables and ground cables • Provide a ground point near the power supply module. Ground the LG and FG terminals of the power supply module with the thickest and shortest ground cable (30cm or shorter) possible. (3) Cables used for the modules connected to the head module Use shielded cables for the cables which are connected to the I/O modules and may be extended out of the control panel.
  • Page 129 APPENDICES (b) Grounding the cable clamp Use shielded cables for external wiring and ground the shields of the external wiring cables to the control panel with the AD75CK-type cable clamping (Mitsubishi). (Ground the shield section 20 to 30cm away from the module.) Inside the control panel Module...
  • Page 130 [Example of processing for a shielded cable] To protect the signals, cover the connector pins Take off the insulating tube of each shield and connect with the heat shrinkable insulation tubes. the shields of the cables with conductive tapes. (If the signals are stripped, they are affected by static electricity and may result in malfunction.) Cover the conductive part with insulating tape.
  • Page 131 APPENDICES (e) Power cables for external power supply terminal As an external power supply for the following modules, use a CE-marked AC/DC power supply with a reinforced insulation or a double insulation. Install the AC-DC power supply in the control panel where the module is installed.
  • Page 132 (9) Others (a) Ferrite core A ferrite core has the effect of reducing radiated noise in the 30MHz to 100MHz band. It is recommended to attach ferrite cores if shield cables coming out from pulled out of the control panel do not provide sufficient shielding effects.
  • Page 133 APPENDICES (c) Isolation transformer An isolation transformer has an effect on reducing conducted noise (especially, lightning surge). Lightning surge may cause a malfunction of the programmable controller. As measures against lightning surge noise, connect an isolation transformer as shown below. Using an isolation transformer will reduce an impact of lightning.

  • Page 134: Appendix 8.2 Requirements For Compliance With The Low Voltage Directive

    Appendix 8.2 Requirements for compliance with the Low Voltage Directive The Low Voltage Directive requires each device that operates with the power supply ranging from 50 to 1000VAC and 75 to 1500VDC to satisfy the safety requirements. This section summarizes precautions on using the MELSEC-L series modules to comply with the Low Voltage Directive.
  • Page 135 APPENDICES (4) Control panel (a) Electrical shock prevention The control panel must be handled as shown below to protect a person who does not have adequate knowledge of electricity from an electric shock. • Lock the control panel so that only those who are trained and have acquired enough knowledge of electric facilities can open the control panel.

  • Page 136: Appendix 9 General Safety Requirements

    Appendix 9 General Safety Requirements When a programmable controller is powered on or off, proper output of the control target may not function temporarily due to delay and startup time differences between the power supply for the programmable controller and the external power supply for the control target (especially in the case of DC).
  • Page 137 APPENDICES Memo...

  • Page 138: Appendix 10 Calculating Heating Value Of Programmable Controller

    Appendix 10 Calculating Heating Value of Programmable Controller The ambient temperature inside the control panel where a head module is installed must be 55 or less. It is necessary to know the average power consumption (heating value) of the equipment and devices installed inside the control panel when designing a heat release structure of the panel.
  • Page 139 APPENDICES (2) Power consumption of 5VDC logic circuit sections in all modules (including the head module) The power consumption of the 5VDC output circuit in the power supply module is the power consumption of each module. = I5 × 5 (W) (3) Total of 24VDC average power consumption of the output modules (power consumption for the output points simultaneously turned on) The average power of the 24VDC external power supply is the total power consumption of each module.

  • Page 140: Appendix 11 Processing Time

    Appendix 11 Processing Time The calculation formula for the I/O response time of the head module is as follows: Rio = (RX/RY points) × 0.16 + (RWw/RWr points) × 5.5 + 430 + Ka + (response time of the connected module) [s] The above formula calculates the average value when the number of RX/RY points is the same as the number of actual I/O points of the module connected to the head module, and an auto refresh of the same number of points as the number of RWw/RWr points was executed.
  • Page 141 APPENDICES Memo...

  • Page 142: Appendix 12 Checking Serial Number And Function Version

    Appendix 12 Checking Serial Number and Function Version The serial number and function version of the head module can be checked on any of the following: • Rating plate • Front of the module • System Monitor in GX Works2 (1) Checking on the rating plate The rating plate is located on the side of the head module.
  • Page 143 APPENDICES (2) Checking on the front of the module The serial number on the rating plate is printed on the front (at the bottom) of the module. 150111000000000- A Serial number Function version...
  • Page 144 (3) Checking on the System Monitor window in GX Works2 The serial number and function version can be checked on the "Product Information List" window. [Diagnostics]  [System Monitor]  Serial number Function version Product number On the window, the serial number and function version of each intelligent function module can be checked as well.
  • Page 145 APPENDICES Memo...

  • Page 146: Appendix 13 External Dimensions

    Appendix 13 External Dimensions (1) Head module (LJ72MS15) DIN rail center (Unit: mm) (2) END cover (L6EC) DIN rail center (Unit: mm)
  • Page 147 APPENDICES Memo...

  • Page 148: Index

    INDEX ..41 ....134 Applicable DIN rail model (IEC 60715) General safety requirements ..... . . 32 .
  • Page 149 ......59 ......83 Operation setting Troubleshooting .

  • Page 150: Revisions

    Japanese manual version SH-081151-F This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.

  • Page 151: Warranty

    WARRANTY Please confirm the following product warranty details before using this product. 1. Gratis Warranty Term and Gratis Warranty Range If any faults or defects (hereinafter "Failure") found to be the responsibility of Mitsubishi occurs during use of the product within the gratis warranty term, the product shall be repaired at no cost via the sales representative or Mitsubishi Service Company.

  • Page 152: Trademarks

    TRADEMARKS Ethernet is a registered trademark of Fuji Xerox Co., Ltd. in Japan. The company names, system names and product names mentioned in this manual are either registered trademarks or trademarks of their respective companies.  In some cases, trademark symbols such as '' or ' ' are not specified in this manual.
  • Page 154 SH(NA)-081152ENG-F(1703)MEE MODEL: LJ72MS15-U-E MODEL CODE: 13JZ78 HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN NAGOYA WORKS : 1-14 , YADA-MINAMI 5-CHOME , HIGASHI-KU, NAGOYA , JAPAN When exported from Japan, this manual does not require application to the Ministry of Economy, Trade and Industry for service transaction permission.

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