Mitsubishi Electronics QJ71LP21, QJ71LP21-25, QJ71LP21GE, QJ71LP21S-25, QJ72LP25-25 User Manual

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Q Corresponding MELSECNET/H Network System Reference Manual (Remote I/O network)

-QJ71LP21

-QJ71LP21-25

-QJ71LP21S-25

-QJ71LP21G

-QJ71LP21GE

-QJ71BR11

-QJ72LP25-25

-QJ72LP25G

-QJ72LP25GE

-QJ72BR15

 SAFETY PRECAUTIONS 

(Read these precautions before using this product.)

Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly. The precautions given in this manual are concerned with this product only. For the safety precautions of the programmable controller system, refer to the user’s manual for the CPU module used. In this manual, the safety precautions are classified into two levels: "

WARNING

CAUTION

Under some circumstances, failure to observe the precautions given under " serious consequences. Observe the precautions of both levels because they are important for personal and system safety. Make sure that the end users read this manual and then keep the manual in a safe place for future reference.

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

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

[Design Precautions]

WARNING" and " CAUTION".

CAUTION" may lead to

WARNING

 When the network develops a communication error, the station with the communication error will

enter into the following status. Check the communication status information and configure an interlock circuit in the sequence program to ensure that the entire system will operate safely. Failure to do so may result in an accident due to an incorrect output or malfunction.

(1) The remote master station will hold the data from before the communication error.

(2) The remote I/O station turns off all outputs. The output module of the remote I/O station can

clear/hold the output status at the time of error by using the remote I/O module parameters. As the parameters are set to "clear" by default, the output module turns off the outputs at the time of error. If it is required to hold the output in order to operate the system safely, set the parameters to "hold".

A - 1 A - 1

[Design Precautions]

WARNING

 When connecting a peripheral with the programmable controller CPU or connecting a personal

computer with an intelligent function module to modify data of a running programmable controller, configure an interlock circuit in the sequence program to ensure that the entire system will always operate safely. For other forms of control (such as program modification or operating status change) of a running programmable controller, read the relevant manuals carefully and ensure that the operation is safe before proceeding. Especially, when a remote programmable controller is controlled by an external device, immediate action cannot be taken if a problem occurs in the programmable controller due to a communication failure. To prevent this, configure an interlock circuit in the sequence program, and determine corrective actions to be taken between the external device and CPU module in case of a communication failure.

 If a communication cable is disconnected, the network may be unstable, resulting in a

communication failure of multiple stations. Configure an interlock circuit in the program to ensure that the entire system will always operate safely even if communications fail. Failure to do so may result in an accident due to an incorrect output or malfunction.

CAUTION

 Do not install the control lines or communication cables together with the main circuit lines or

power cables. Keep a distance of 100mm (3.94 in.) or more between them. Failure to do so may result in malfunction due to noise.

 Reset the CPU module or remote I/O module after changing its parameters. Failure to do so

may cause malfunction because the previous parameter settings remain in the module.

[Installation Precautions]

CAUTION

 Use the programmable controller in an environment that meets the general specifications in the

user’s manual for the CPU module used. Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the product.

 To mount the module, while pressing the module mounting lever located in the lower part of the

module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the module until it snaps into place. Incorrect mounting may cause malfunction, failure or drop of the module. When using the programmable controller in an environment of frequent vibrations, fix the module with a screw.

 Tighten the screws within the specified torque range. Undertightening can cause drop of the

screw, short circuit, or malfunction. Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction

 Shut off the external power supply (all phases) used in the system before mounting/removing a

module or connecting/disconnecting a connector. Failure to do so may result in damage to the product. Modules can be replaced online on a remote I/O station where a remote I/O module with function version D or later is used. Note that there are restrictions on the modules that can be replaced online, and each module has its predetermined replacement procedure. For details, refer to the relevant section in this manual.

A - 2 A - 2

[Installation Precautions]

CAUTION

 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 installation and wiring.

Failure to do so may result in electric shock or damage to the product.

[Wiring Precautions]

CAUTION

 Individually ground the FG terminal of the programmable controller with a ground resistance of

100Ω or less. Failure to do so may result in electric shock or malfunction.

 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 and coaxial cables 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.

 Place the cables in a duct or clamp them. If not, dangling cable may swing or inadvertently be

pulled, resulting in damage to the module or cables or malfunction due to poor contact.

 Tighten the terminal 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, 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 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 QCPU User's Manual (Hardware Design, Maintenance and Inspection).

A - 3 A - 3

[Setup 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 screws or module mounting screws. Failure to do so may result in electric shock or cause the module to fail or malfunction.

[Setup and Maintenance Precautions]

CAUTION

 Before performing online operations (especially, program modification, forced output, and

operating status change) for the running CPU module on another station from GX Developer over the MELSECNET/H network, read relevant manuals carefully and ensure the safety. Improper operation may damage machines or cause accidents.

 Do not disassemble or modify the modules.

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 (9.85 inches) 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/removing a

module or connecting/disconnecting a connector. Failure to do so may cause the module to fail or malfunction. Modules can be replaced online in a remote I/O network system where a remote I/O module with function version D or later is used. Note that there are restrictions on the modules that can be replaced online, and each module has its predetermined replacement procedure. For details, refer to the relevant section in this manual.

 After the first use of the product, do not mount/remove the module to/from the base unit more

than 50 times (IEC 61131-2 compliant). Exceeding the limit of 50 times 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.

A - 4 A - 4

 CONDITIONS OF USE FOR THE PRODUCT 

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

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

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

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

cases in which the public could be affected if any problem or fault occurs in the PRODUCT.

 Railway companies or Public service purposes, and/or any other cases in which establishment of a

special quality assurance system is required by the Purchaser or End User.

 Aircraft or Aerospace, Medical applications, Train equipment, transport equipment such as Elevator

and Escalator, Incineration and Fuel devices, Vehicles, Manned transportation, Equipment for Recreation and Amusement, and Safety devices, handling of Nuclear or Hazardous Materials or Chemicals, Mining and Drilling, and/or other applications where there is a significant risk of injury to the public or property.

Notwithstanding the above, restrictions Mitsubishi may in its sole discretion, authorize use of the PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific applications agreed to by Mitsubishi and provided further that no special quality assurance or fail-safe, redundant or other safety features which exceed the general specifications of the PRODUCTs are required. For details, please contact the Mitsubishi representative in your region.

A - 5 A - 5

REVISIONS

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

Print Date Manual Number Revision

Oct., 2000 SH (NA) -080124-A First printing

May., 2001 SH (NA) -080124-B

Model addition

QJ71LP21G, QJ72LP25G, QJ71LP21GE, QJ72LP25GE

Correction

Product Components, About The Generic Terms And Abbreviations, Chapter 1, Section 1.2, 2.4, 3.1.1, 3.1.2, 3.2.1, 3.2.2, 3.3.2, 4.2.1, 4.2.2,

4.8.2, Chapter 5, Section 5.1.5, 5.2.1, 6.1.2, 6.2.1, 6.3, 6.4, 7.1.1, 7.8,

8.1, 8.1.1, 8.1.4, 8.3.1, 8.3.2, Appendix 2, 3, 4, 5, Index

Addition

Section 8.2.6

Apr., 2002 SH (NA) -080124-C

Correction

Section 1.2, 1.3, 2.3.1, 2.3.2, 2.3.3, 2.5, 3.1.1, 3.1.2, 3.2, 3.3.2, 4.2.1,

6.1.1, 6.4, Chapter 7, Section 8.4, Appendix 2, 3

Changed item numbers

Nov., 2002 SH (NA) -080124-D

Apr., 2003 SH (NA) -080124-E

Section 2.3

Addition

Section 2.4, Section 2.4 Section 2.5

Section 7.10

Model addition

QJ71LP21S-25

Correction

SAFETY PRECAUTIONS, CONTENTS, Generic Terms And Abbreviations, Product Components, Section 1.1, 1.2, 3.1.1, 3.1.2, 4.1.2, 4.8.1, 4.8.2, 7.1.1, 8.1.4, Appendix 2, 3

Correction

SAFETY PRECAUTIONS, About Manuals, Section 1.2, 2.1.2, 2.2.2,

2.3.2, 2.5, 3.1.1, 3.1.2, 3.2.2, 3.3.1, Chapter 5, Section 5.1.3, 5.1.5, 6.2,

6.3, 6.4, 6.5, 8.1, 8.2, 8.2.1, 8.2.5, 8.3.1

A - 6 A - 6

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

Print Date Manual Number Revision

Jun., 2004 SH (NA) -080124-F

Correction

SAFETY PRECAUTIONS, Manuals, Generic Terms And Abbreviations, Section 1.2, 2.1.2, 2.2.2, 2.3.2, 2.4.2, 2.5, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.2,

3.2.2, 4.2.2, 4.9.1, 4.10, 4.10.1, 4.10.2, 4.10.3, Chapter 5, Section 5.1.1,

5.2, 5.2.1, 6.4, 6.5, Chapter 7, Section 8.1, 8.1.1, 8.1.2, 8.1.3, 8.1.4,

8.2.1, 8.2.3, 8.2.5, 8.2.7, 8.3.1, 8.3.2, Appendix 2, 3

Addition

Section 1.4, 2.4, 2.7, 3.3.3, 3.3.4, 7.11, 7.12, 8.2.7, Appendix 7

Changed section No.

Mar., 2005 SH (NA) -080124-G

Sep., 2005 SH (NA) -080124-H

May, 2006 SH (NA) -080124-I

Sep., 2006 SH (NA) -080124-J

Section 2.4

Correction

Section 2.5, Section 2.5 Section 2.6

Safety Precautions, Conformation to the EMC Directive and Low Voltage Instruction, Product Configuration, Section 1.1, 1.2, 2.6, 2.7, 3.1.1, 3.1.2,

3.1.4, 3.2.2, 3.3.2, 4.2.1, 4.2.2, 4.3, 4.4, 4.8.1, 4.8.2, 4.9.1, 4.10.1, 5.1.4,

6.1.1, 6.2, 6.2.2, 6.3, 7.4, 8.1, 8.1.2, 8.1.3, 8.2, 8.2.1, 8.3.1, 8.3.2, Appendix 2, 3, 4, 5, 7

Addition

Section 8.2.8

Correction

Generic Terms And Abbreviations, Section 1.2, Section 2.5, Section 3.2,

3.2.2, 3.3.2, Section 5.1.5, 5.2.1, Section 6.3, 6.5, Section 7.12, Section

8.2, 8.2.5, 8.3.1, 8.3.2, Appendix 3, 4, 5

Correction

Generic Terms And Abbreviations, Section 1.1, Chapter 2, Section 2.2.1,

2.5, 3.1.1, 3.1.4, 4.2.1, 4.2.2, 5.1.3, 5.1.4, 5.1.5, 6.3, 6.4, 7.1.1, 8.1.2,

8.3.2, Appendix 5

Addition

Section 2.5.1, 2.5.2

Correction

Section 2.1.2, 2.2.2, 2.3.2, 2.4.2, 4.2.1, 4.2.2, 8.3.2

A - 7 A - 7

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

Print Date Manual Number Revision

Nov., 2006 SH (NA) -080124-K

Addition

SAFETY PRECAUTIONS

Correction

Section 2.5.2, 3.2.2, 4.2.1, 4.2.2, 4.3, 4.8.1, 4.8.2, 5.1.5, 8.1.2, 8.2, 8.2.4,

8.3.2, Appendix 2, 3, 5

Sections added

Section 8.2.8, 8.4, 8.5

Changed section No.

Section 8.2.8

Oct., 2007 SH (NA) -080124-L

Addition

Chapter 1, Section 2.1.2, 2.2.2, 2.3.2, 2.4.2, 2.5.1, 2.5.2, 2.7, 3.3.1, 3.3.2,

4.8.2, Chapter 5, Section 5.1.4, 5.1.5, 8.2.1, 8.3.1, Appendix 2, 4, 5

Correction

SAFETY PRECAUTIONS , Generic Terms And Abbreviations, Section

2.2.1, 2.3.1, 2.4.1, 4.2.1, 4.7.1, 4.7.2, 4.7.3, 4.9.1, 5.1.1, 5.1.3, 6.1.1, 6.2,

6.3, 6.5, 6.6, 7.1.1, 7.12, 8.1, Appendix 3

Sections added

DEFINITIONS OF TERMINOLOGY, Section 6.4

Changed section No.

Section 6.4 to 6.5

Feb., 2008 SH (NA)-080124-M

Correction

Generic Terms And Abbreviations, Section 1.2, 2.1.2, 2.2.2, 2.3.2, 2.4.2,

2.5, 3.2.2, 3.3.2, 4.7, 4.8, 4.9.1, 5.1.1, 5.1.4 to 5.1.6, 5.2.1, 6.1.1, 6.5, 6.6,

7.1.1, 7.8, 7.11.4, 8.1, 8.3, 8.4, Appendix 2, 3, 5

Sep., 2008 SH (NA)-080124-N

Correction

SAFETY PRECAUTIONS, Compliance with the EMC and Low Voltage Directives, Generic Terms And Abbreviations, DEFINITIONS OF TERMINOLOGY, Chapter1, Section 1.2, 1.3, 2.1.2, 2.1.3, 2.2, 2.2.1,

2.2.3, 2.3, 2.4.2, 2.4.3, 2.5.1, 2.6, 3.1.4, 3.2, 3.3.2, 3.3.4, 4.2.1, 4.2.2, 4.8,

4.9.1, Chapter 5, Section 5.1.3 to 5.1.5, 6.1.2, 6.5, 6.6, Chapter 7, 7.1.1,

7.10, 7.11, 7.11.1, 7.11.3, 7.11.4, Chapter 8, 8.1, 8.2, 8.2.5, 8.2.7, 8.3.1,

8.3.2, Appendix 2 to 6

Section 8.2.9, Section 8.4 Section 8.6

Section 6.5 to 6.6, Appendix 7 Appendix 6

A - 8 A - 8

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

Print Date Manual Number Revision

Aug., 2009 SH (NA) -080124-O

Correction

Generic Terms And Abbreviations, Section 1.3, 2.5.1, 2.7, 3.3.2, 6.4.2, Chapter 8

Sections added

Section 8.3.1

Changed section No.

Sep., 2010 SH (NA) -080124-P

Mar., 2011 SH (NA) -080124-Q

Sep.,2012 SH (NA) -080124-R

Section 8.3.1(4)

Correction

Section 8.3.2, Section 8.3.2 Section 8.3.3

Generic Terms And Abbreviations, Section 1.3, 2.5.1, 2.5.2, 2.7, 3.3.2,

4.2.1, 4.2.2, 4.3, Chapter 5, Section 5.1.5, 5.1.6, 6.1.1, 8.2.9, 8.3.1, 8.3.2,

8.3.3, Appendix 2, 6

Sections added

CONDITIONS OF USE FOR THE PRODUCT

Correction

Section 3.1.4, 3.3.1, 8.3.2, Appendix 5

Correction

SAFETY PRECAUTIONS, COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES, GENERIC TERMS AND ABBREVIATIONS, PACKING LIST, Section 1.2, 1.4, 2.1.2, 2.2.2, 2.3.1, 2.3.2, 2.4.1, 2.4.2,

2.5.1, 2.5.2, 2.6, 2.7, 3.1.1, 3.1.2, 3.1.4, 3.2, 3.2.1, 3.2.2, 3.3.1, 3.3.2,

3.3.3, 3.3.4, 4.1, 4.2.1, 4.2.2, 4.3, 4.7, 4.8.1, 4.8.2, 4.9.1, 4.10, 4.10.1,

4.10.2, 4.10.3, Chapter 5, Section 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6,

5.2.1, 6.1.1, 6.1.2, 6.5, 6.6, Chapter 7, Section 7.11, 7.11.3, 7.11.4, 7.12, Chapter 8, Section 8.1, 8.1.1, 8.1.3, 8.2, 8.2.1, 8.2.4, 8.2.5, 8.3, 8.3.1,

8.3.2, 8.3.3, 8.4, 8.6, Appendix 1, 2, 3, 5, 6, INDEX

Jul., 2013 SH (NA) -080124-S

Correction

SAFETY PRECAUTIONS, MANUALS, GENERIC TERMS AND ABBREVIATIONS, Chapter 1, Section 1.2, 1.3, 2.5.1, 2.5.2, 4.2.1, 4.2.2,

4.7, 4.7.1, 4.7.2, 4.7.3, 4.8.1, 4.10.1, 4.10.2, 4.10.3, 4.10.4, Chapter 5, Section 5.2.1, 6.1.1, 6.4.1, 6.6, 7.11, 7.12, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.2.6,

8.3.1, 8.3.3, Appendix 1, 2, 3, 4, 5

Japanese Manual Version SH-080123-W

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.

 2000 MITSUBISHI ELECTRIC CORPORATION

A - 9 A - 9

INTRODUCTION

Thank you for purchasing the Mitsubishi MELSEC-Q series programmable controllers. Before using this product, please read this manual carefully and develop familiarity with the functions and performance of the MELSEC-Q series programmable controller to handle the product correctly.

SAFETY PRECAUTIONS .............................................................................................................................. A- 1

CONDITIONS OF USE FOR THE PRODUCT ............................................................................................. A- 5

REVISIONS ................................................................................................................................................... A- 6

CONTENTS ................................................................................................................................................... A-10

MANUALS ................................................................................................................................................... A-15

COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES ....................................................... A-15

GENERIC TERMS AND ABBREVIATIONS ................................................................................................. A-16

DEFINITIONS OF TERMINOLOGY .............................................................................................................. A-18

PACKING LIST ............................................................................................................................................... A-19

1 OVERVIEW 1- 1 to 1-11

1.1 Overview.................................................................................................................................................. 1- 2

1.2 Features .................................................................................................................................................. 1- 3

1.3 Abbreviations Used in the Text, Tables and Diagrams of This Manual ................................................ 1-10

1.4 Functions Added/Changed with Upgrade to Function Version D.......................................................... 1-11

2 SYSTEM CONFIGURATION 2- 1 to 2-23

2.1 Single Remote I/O Networks .................................................................................................................. 2- 1

2.1.1 Configuration .................................................................................................................................... 2- 1

2.1.2 Setting items ..................................................................................................................................... 2- 2

2.1.3 Available device ranges ................................................................................................................... 2- 3

2.2 Multiple Remote I/O Network (Process CPU) ........................................................................................ 2- 4

2.2.1 Configuration .................................................................................................................................... 2- 4

2.2.2 Setting items ..................................................................................................................................... 2- 5

2.2.3 Available device ranges ................................................................................................................... 2- 6

2.3 Multiplexed Remote I/O Network for Redundant System (Redundant CPU) ....................................... 2- 7

2.3.1 Configuration .................................................................................................................................... 2- 7

2.3.2 Setting items ..................................................................................................................................... 2- 8

2.3.3 Available device ranges ................................................................................................................... 2- 9

2.4 Multiple Remote I/O Network .................................................................................................................. 2-10

2.4.1 Configuration .................................................................................................................................... 2-10

2.4.2 Setting items ..................................................................................................................................... 2-11

2.4.3 Available device ranges ................................................................................................................... 2-12

2.5 Applicable Systems ................................................................................................................................. 2-13

2.5.1 Applicable systems for remote master stations ............................................................................... 2-13

2.5.2 Applicable systems for remote I/O stations ...................................................................................... 2-15

2.6 When Using a Multiple CPU System ...................................................................................................... 2-19

2.7 Checking Function Version and Serial No. ............................................................................................ 2-22

A - 10 A - 10

3 SPECIFICATIONS 3- 1 to 3-64

3.1 Performance Specifications .................................................................................................................... 3- 1

3.1.1 Optical loop system performance specifications ............................................................................. 3- 1

3.1.2 Coaxial cable system performance specifications .......................................................................... 3- 3

3.1.3 Optical fiber cable specifications ..................................................................................................... 3- 4

3.1.4 Coaxial cable specifications ............................................................................................................. 3- 5

3.2 Function Specifications ........................................................................................................................... 3-10

3.2.1 Cyclic transmission function (periodic communication) .................................................................. 3-11

(1) Communicating with I/O modules ................................................................................................... 3-11

(2) Communicating with intelligent function modules ........................................................................... 3-12

3.2.2 RAS functions ................................................................................................................................... 3-17

(1) Output reset function for communication errors ............................................................................. 3-17

(2) Hardware error time CPU operation mode setting ......................................................................... 3-17

(3) Automatic return function ................................................................................................................. 3-18

(4) Loopback function (optical loop system) ......................................................................................... 3-19

(5) Station detach function (coaxial bus system) ................................................................................. 3-21

(6) Transient transmission enabled even at CPU module error .......................................................... 3-22

(7) Abnormal detection time .................................................................................................................. 3-23

(8) Diagnostic function .......................................................................................................................... 3-24

(9) Redundant power supply on a remote I/O station .......................................................................... 3-25

(10) Online module change on a remote I/O station ............................................................................ 3-28

3.3 Link Data Send/Receive Processing Time Specifications ..................................................................... 3-34

3.3.1 Link data send/receive processing .................................................................................................. 3-34

3.3.2 Transmission delay time .................................................................................................................. 3-40

3.3.3 Switching time from the multiplexed remote master station to the multiplexed remote

sub-master station in a multiplexed remote I/O network ................................................................ 3-59

3.3.4 Output holding time during system switching in the multiplexed remote I/O network for

redundant system ............................................................................................................................ 3-60

4 SETTING AND PROCEDURE BEFORE OPERATION 4- 1 to 4-37

4.1 Procedure Before Operation ................................................................................................................... 4- 1

4.2 Part Names and Settings ........................................................................................................................ 4- 2

4.2.1 QJ71LP21, QJ71LP21-25, QJ71LP21G, QJ71LP21GE, QJ71BR11 (Remote master station)

......................................................................................................................................................... 4- 2

4.2.2 QJ72LP25-25, QJ72LP25G, QJ72LP25GE, QJ72BR15 ............................................................... 4- 6

4.3 Installing and Uninstalling the Module .................................................................................................... 4-11

4.4 Stopping the CPU (Unintentional Output Prevention) ........................................................................... 4-13

4.5 Checking the Input Power Supply Voltage ............................................................................................. 4-13

4.6 Powering On............................................................................................................................................ 4-13

4.6.1 Checking the on status of the POWER LED of the power supply module .................................... 4-13

4.6.2 Checking the on status of the RUN LED of the network module ................................................... 4-13

4.7 Unit Tests of the Network Module (Offline Test) .................................................................................... 4-14

4.7.1 Self-loopback test ............................................................................................................................. 4-15

4.7.2 Internal self-loopback test ................................................................................................................ 4-17

4.7.3 Hardware test ................................................................................................................................... 4-19

4.8 Cable Connections .................................................................................................................................. 4-21

4.8.1 Optical loop system .......................................................................................................................... 4-21

A - 11 A - 11

4.8.2 Coaxial bus system .......................................................................................................................... 4-23

4.9 Offline Tests from GX Developer ........................................................................................................... 4-28

4.9.1 Forward loop/reverse loop test (Remote master station only) ....................................................... 4-28

4.10 Network Diagnostics from GX Developer (Online Tests) .................................................................... 4-32

4.10.1 Loop test (optical loop system only) .............................................................................................. 4-33

4.10.2 Setup confirmation test .................................................................................................................. 4-34

4.10.3 Station order check test (optical loop system only) ...................................................................... 4-35

4.10.4 Communication test ....................................................................................................................... 4-36

5 PARAMETER SETTINGS 5- 1 to 5-38

5.1 Remote Master Station Parameter Setting ............................................................................................ 5- 5

5.1.1 Setting the number of modules (Network type) .............................................................................. 5- 5

5.1.2 Network settings ............................................................................................................................... 5- 6

(1) Starting I/O No. ................................................................................................................................ 5- 6

(2) Network No. ..................................................................................................................................... 5- 6

(3) Total stations .................................................................................................................................... 5- 6

(4) Group No. (Available for multiplexed remote master/sub-master station only) ............................... 5- 7

(5) Mode ................................................................................................................................................ 5- 7

(6) Parameter setting example ............................................................................................................. 5- 8

5.1.3 Common parameter ......................................................................................................................... 5- 9

(1) LX/LY setting .................................................................................................................................... 5- 9

(2) LB/LW setting ................................................................................................................................... 5-12

(3) Reserved station specification ......................................................................................................... 5-13

(4) Remote sub-master station ............................................................................................................. 5-13

5.1.4 Supplementary settings ................................................................................................................... 5-15

5.1.5 Refresh parameters ......................................................................................................................... 5-19

5.1.6 Valid Module During Other Station Access ..................................................................................... 5-31

5.1.7 Redundant settings .......................................................................................................................... 5-32

5.2 Remote I/O Station Parameter Settings ................................................................................................. 5-33

5.2.1 Remote I/O station possible parameter settings ............................................................................. 5-33

6 PROGRAMMING 6- 1 to 6-41

6.1 Programming Precautions ...................................................................................................................... 6- 1

6.1.1 Interlock related signals ................................................................................................................... 6- 1

6.1.2 Program example ............................................................................................................................. 6- 4

6.2 Cyclic Transmission ................................................................................................................................ 6- 7

6.2.1 32-bit data guarantee ....................................................................................................................... 6- 7

6.2.2 Block guarantee of cyclic data per station ....................................................................................... 6- 8

6.3 Communications with I/O Modules ......................................................................................................... 6- 9

6.4 Communications with Intelligent Function Modules ............................................................................... 6-10

6.4.1 Program example when using GX Configurator ............................................................................. 6-11

6.4.2 Program example when not using GX Configurator ....................................................................... 6-15

6.5 Link Dedicated Instruction List ................................................................................................................ 6-18

6.6 Using the Link Special Relays (SB)/ Link Special Registers (SW) ....................................................... 6-23

A - 12 A - 12

7 APPLICATION FUNCTIONS 7- 1 to 7-44

7.1 Transient Transmission Function (Non-Periodical Communication) ..................................................... 7- 2

7.1.1 Link Dedicated instruction ................................................................................................................ 7- 3

(1) Reading/writing remote I/O station intelligent function module buffer memory

(Z(P).REMFR/ Z(P).REMTO)........................................................................................................... 7- 3

7.2 Remote I/O Station System Monitor ....................................................................................................... 7- 9

7.3 Device Test for Remote I/O Station ........................................................................................................ 7-10

7.4 Multiplex Transmission Function (Optical Loop System) ...................................................................... 7-12

7.5 Return Sequence Station Number Setting Function.............................................................................. 7-13

7.6 Reserved Station Function ..................................................................................................................... 7-13

7.7 Interrupt Settings ..................................................................................................................................... 7-14

7.8 I/O Assignment Function ........................................................................................................................ 7-15

7.9 Stopping/Restarting the Cyclic Transmission and Stopping Link Refreshing (Network Test) ............. 7-16

7.10 Multiplexed remote master function (Process CPU)............................................................................ 7-17

7.11 Multiplexed remote master function for the redundant system (Redundant CPU) ............................. 7-32

7.11.1 Backup function of master operation on system switching between control system and

standby system ................................................................................................................................ 7-34

7.11.2 Master operation by the station that has started up as the control system.................................. 7-35

7.11.3 System switching request function of control system ................................................................... 7-36

7.11.4 Access function by specifying the control system or standby system ......................................... 7-39

7.12 Remote password ................................................................................................................................. 7-40

8 TROUBLESHOOTING 8- 1 to 8-61

8.1 Network Diagnostics (Network Monitor) ................................................................................................. 8- 2

8.1.1 Host information ............................................................................................................................... 8- 5

8.1.2 Other station information.................................................................................................................. 8- 7

8.1.3 Network monitor details ................................................................................................................... 8- 9

8.1.4 Error history monitor ......................................................................................................................... 8-12

8.2 Troubleshooting ...................................................................................................................................... 8-15

8.2.1 Items checked first ........................................................................................................................... 8-21

8.2.2 Items checked when data link cannot be performed throughout the system ................................ 8-21

8.2.3 Items checked when data link is disabled by resetting or powering off a station .......................... 8-22

8.2.4 Items checked when data link cannot be performed on a certain station ..................................... 8-22

8.2.5 Items checked when an communication data error is detected .................................................... 8-23

8.2.6 Items checked when a link dedicated instruction does not complete ............................................ 8-23

8.2.7 Items checked when multiplexed remote I/O network for redundant system does not operate

normally ........................................................................................................................................... 8-24

8.2.8 Items checked when a minor error (continue error) on a remote I/O station cannot be detected

......................................................................................................................................................... 8-24

8.2.9 Checking incorrect optical fiber cable connection during online .................................................... 8-25

8.3 Error Codes ............................................................................................................................................. 8-28

8.3.1 How to check error codes ................................................................................................................ 8-28

8.3.2 MELSECNET/H error code list ........................................................................................................ 8-34

8.3.3 Error codes detected on remote I/O stations and equivalent to CPU module error codes ........... 8-43

8.4 Canceling a Minor Error (Continue Error) on a Remote I/O Station ...................................................... 8-52

8.4.1 Canceling a specific remote I/O station error .................................................................................. 8-53

8.4.2 Canceling errors of all remote I/O stations ...................................................................................... 8-54

A - 13 A - 13

8.5 Procedure for Replacing a Normally Operating Redundant Power Supply Module ............................. 8-59

8.6 H/W Information ...................................................................................................................................... 8-60

APPENDICES App- 1 to App-53

Appendix 1 Precautions for Replacing MELSECNET/10 Remote I/O Network with MELSECNET/H

Remote I/O Network. .............................................................................................................App- 1

Appendix 2 Link Special Relay (SB) .........................................................................................................App- 3

Appendix 3 Link Special Register (SW) .................................................................................................. App-14

Appendix 4 Special Relay (SM) for Remote I/O Stations ....................................................................... App-33

Appendix 5 Special Register (SD) for Remote I/O Module .................................................................... App-36

Appendix 6 External Dimensions ............................................................................................................. App-50

INDEX Index- 1 to Index- 2

A - 14 A - 14

MANUALS

Relevant manuals

The manuals related to this product are listed below. Order each manual as needed, referring to the following lists.

Manual name

Manual number

(model code)

Q Corresponding MELSECNET/H Network System Reference Manual (PLC to PLC network)

Specifications, procedures and settings before system operation, parameter setting, programming, and

troubleshooting of a MELSECNET/H network system (PLC to PLC network) (Sold separately)

Q Corresponding MELSECNET/H Remote I/O Module Reference Manual (MELSECNET/10

Mode)

Operating procedures, system configuration, parameter settings, functions, programming, and

troubleshooting of the MELSECNET/H remote I/O module when used in MELSECNET/10 mode.

(Sold separately)

COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES

(1) For programmable controller system

To ensure that Mitsubishi programmable controllers maintain EMC and Low Voltage Directives when incorporated into other machinery or equipment, certain measures may be necessary. Please refer to one of the following manuals.

• QCPU User's Manual (Hardware Design, Maintenance and Inspection)

• Safety Guidelines (This manual is included with the CPU module or base unit.) The CE mark on the side of the programmable controller indicates compliance with EMC and Low Voltage Directives.

(2) For the product

To ensure that this product maintains EMC and Low Voltage Directives, please refer to one of the manuals listed under (1).

SH-080049

(13JF92)

SH-081164ENG

(13JV30)

A - 15 A - 15

GENERIC TERMS AND ABBREVIATIONS

Generic term/abbreviation Description

The abbreviation for the QJ71LP21, QJ71LP21-25, QJ71LP21S-25, QJ71LP21G,

QJ71LP21

QJ71BR11 The abbreviation for the QJ71BR11 MELSECNET/H network module

QJ72LP25

QJ72BR15 The abbreviation for the QJ72BR15 MELSECNET/H network module

Master module A generic term for the QJ71LP21 and QJ71BR11

Remote I/O module A generic term for the QJ72LP25 and QJ72BR15

Network module A generic term for master module and remote I/O module

Ethernet module

Serial communication module

CC-Link IE Controller Network module

CC-Link IE Field Network The abbreviation for the QJ71GF11-T2 CC-Link IE Field Network module

MELSECNET/H The abbreviation for the Q series MELSECNET/H network system

MELSECNET/10

QCPU

Basic model QCPU A generic term for the Q00JCPU, Q00CPU, and Q01CPU modules

High Performance model QCPU

Process CPU

Redundant CPU

Universal model QCPU

Built-in Ethernet port QCPU

Safety CPU A generic term for the QS001CPU

QJ71LP21GE MELSECNET/H network module. However, especially in cases to show different models, the QJ71LP21, QJ71LP21-25, QJ71LP21S-25, QJ71LP21G and QJ71LP21GE are printed.

The abbreviation for the QJ72LP25-25, QJ72LP25G, QJ72LP25GE MELSECNET/H network module However, especially in cases to show different models, the QJ72LP25-25, QJ72LP25G and QJ72LP25GE are printed.

The abbreviation for the QJ71E71, QJ71E71-100, QJ71E71-B5, and QJ71E71-B2 Ethernet interface modules

The abbreviation for the QJ71C24N, QJ71C24N-R2, QJ71C24N-R4, QJ71C24, and QJ71C24-R2 serial communication modules

The abbreviation for the QJ71GP21-SX or QJ71GP21S-SX CC-Link IE Controller Network module

The abbreviation for the AnU series MELSECNET/10 network system and QnA/Q4AR series MELSECNET/10 network system

A generic term for the Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU, Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU, Q12PRHCPU, Q25PRHCPU, Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU, Q03UDCPU, Q03UDVCPU, Q03UDECPU, Q04UDHCPU, Q04UDVCPU, Q04UDEHCPU, Q06UDHCPU, Q06UDVCPU, Q06UDEHCPU, Q10UDHCPU, Q10UDEHCPU, Q13UDHCPU, Q13UDVCPU, Q13UDEHCPU, Q20UDHCPU, Q20UDEHCPU, Q26UDHCPU, Q26UDVCPU, Q26UDEHCPU, Q50UDEHCPU, and Q100UDEHCPU

A generic term for the Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, and Q25HCPU modules

A generic term for the Q02PHCPU, Q06PHCPU, Q12PHCPU, and Q25PHCPU modules. (Indicated as QnPHCPU in figures.)

A generic term for the Q12PRHCPU and Q25PRHCPU modules. (Indicated as QnPRHCPU in figures.)

A generic term for the Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU, Q03UDCPU, Q03UDVCPU, Q03UDECPU, Q04UDHCPU, Q04UDVCPU, Q04UDEHCPU, Q06UDHCPU, Q06UDVCPU, Q06UDEHCPU, Q10UDHCPU, Q10UDEHCPU, Q13UDHCPU, Q13UDVCPU, Q13UDEHCPU, Q20UDHCPU, Q20UDEHCPU, Q26UDHCPU, Q26UDVCPU, Q26UDEHCPU, Q50UDEHCPU, and Q100UDEHCPU

A generic term for the Q03UDVCPU, Q03UDECPU, Q04UDVCPU, Q04UDEHCPU, Q06UDVCPU, Q06UDEHCPU, Q10UDEHCPU, Q13UDVCPU, Q13UDEHCPU, Q20UDEHCPU, Q26UDVCPU, Q26UDEHCPU, Q50UDEHCPU, and Q100UDEHCPU

A - 16 A - 16

Generic term/abbreviation Description

C Controller module

QnACPU A generic term for MELSEC-QnA series CPU modules

ACPU A generic term for MELSEC-A series CPU modules

AnUCPU

Q3 B A generic term for the Q33B, Q35B, Q38B and Q312B main base units.

Q3 SB A generic term for the Q32SB, Q33SB and Q35SB slim type main base units

Q3 RB Another term for the Q38RB main base units for the redundant power supply system

Q5 B A generic term for the Q52B and Q55B extension base units

Q6 B A generic term for the Q63B, Q65B, Q68B and Q612B extension base units

Q6 RB

Q6 WRB Another term for the Q65WRB redundant type extension base units

QA1S6 B A generic term for the QA1S65B and QA1S68B extension base units

Q6 P

Q6 RP

Redundant power supply module

GX Developer Product name of the software package for the MELSEC programmable controllers

GX Works2

GX Configurator The abbreviation for the GX Configurator software package

REMFR The abbreviation for the Z.REMFR or ZP.REMFR

REMTO The abbreviation for the Z.REMTO or ZP.REMTO

Tracking cable The abbreviation for the QC10TR and QC30TR tracking cables

A generic term for the Q06CCPU-V-H01, Q06CCPU-V, Q06CCPU-V-B, Q12DCCPU-V, and Q24DHCCPU-V type C Controller modules

A generic term for the MELSEC-A series A2UCPU, A2UCPU-S1, A3UCPU, A4UCPU, A2USCPU, A2USCPU-S1, and A2USHCPU-S1 CPU modules

Another term for the Q68RB extension base units for the redundant power supply system

A generic term for the Q61P, Q61P-A1, Q61P-A2, Q62P, Q63P, Q64P, and Q64PN power supply modules

A generic term for the Q61P, Q63RP and Q64RP power supply modules for the redundant power supply system

A - 17 A - 17

DEFINITIONS OF TERMINOLOGY

Term Description

Cyclic transmission

Transient transmission

Link dedicated instruction Dedicated instruction used for transient transmission.

RAS

Remote master station Master station on a remote I/O network

Remote I/O station

MELSECNET/10 mode

MELSECNET/H (MELSECNET/10 mode) remote I/O station

Reserved station

Relay station

Reconnection Processing of restarting data link when a faulty station becomes normal.

Disconnection Processing of stopping data link when a data link error occurs.

Device Devices (X, Y, M, D, etc.) that are contained in a CPU module.

Link Device Devices (LB/LW/LX/LY) that are contained in a network module.

Link scan time

Link refresh

I/O refresh

Automatic refresh

Buffer memory

Baton pass

Function by which data communications are performed periodically between a remote master station and remote I/O stations using link devices (LB/LW/LX/LY) of network modules.

This function allows communication with another station's programmable controller when a request is made with a link dedicated instruction or from GX Developer. Communications can be made with programmable controllers on the same or other networks.

The abbreviation for Reliability, Availability, and Serviceability. This term is used to express the overall usability of automation systems.

Station that performs cyclic transmission according to the range assignment of the remote master station.

A mode to operate the MELSECNET/H remote I/O module on the MELSECNET/10 remote I/O network

A remote I/O station where the MELSECNET/H remote I/O module is being operated in MELSECNET/10 mode

Station that is not actually connected to the network. It must be included in the total number of stations in the network, since it is to be connected in the future.

Station that relays transient transmission data to another network. Link device data of a network module are transferred to another network module via this station. Multiple network modules are connected to one programmable controller.

Time required for data of each station to be sent in order and to make one rotation in the network. The link scan time changes depending on the data volume or transient transmission request.

On the remote master station, data are transferred between the master module's link devices and the CPU module's devices. Link refresh means this processing. Link refresh is performed in "END processing" of the sequence scan of the CPU module.

On a remote I/O station, data are transferred between remote I/O module's link devices and the following devices. I/O refresh means this processing.

• I/O module's devices

• Intelligent function module’s devices

On a remote I/O station, data are transferred between remote I/O module's link devices and intelligent function module's devices. Automatic refresh means this processing.

Memory area in an intelligent function module, in which data are temporarily stored. The network module does not have any buffer memory area that is offered to the user.

A control mechanism in which transmission right (token) is passed around the network for data transmission.

Number that is assigned for transient transmission to any given stations.

Group No.

By specifying a group of stations as transient transmission target, data can be sent to the stations of the same group No.

A - 18 A - 18

PACKING LIST

Model name Part name Quantity

QJ71LP21 QJ71LP21 MELSECNET/H Network Module (optical loop type) 1

QJ71LP21-25 QJ71LP21-25 MELSECNET/H Network Module (optical loop type) 1

QJ71LP21S-25

QJ71LP21G QJ71LP21G MELSECNET/H Network Module (optical loop type) 1

QJ71LP21GE QJ71LP21GE MELSECNET/H Network Module (optical loop type) 1

QJ71BR11

QJ72LP25-25 QJ72LP25-25 MELSECNET/H Network Module (optical loop type) 1

QJ72LP25G QJ72LP25G MELSECNET/H Network Module (optical loop type) 1

QJ72LP25GE QJ72LP25GE MELSECNET/H Network Module (optical loop type) 1

QJ72BR15

*1: Production of the QJ71LP21 was discontinued in October, 2000.

QJ71LP21S-25 MELSECNET/H Network Module (optical loop type, with external power supply function)

QJ71BR11 MELSECNET/H Network Module (coaxial bus type) 1 F-type connector (A6RCON-F) 1

QJ72BR15 MELSECNET/H Network Module (coaxial cable bus type) 1 F-type connector (A6RCON-F) 1

REMARKS

For the coaxial bus system, terminating resistors (75 ) are required in the network terminal stations. Terminating resistors are not included with the QJ71BR11, QJ72BR15; they must be purchased separately. For a list of the model and how to use the terminating resistors, refer to Section

4.8.2.

A - 19 A - 19

MEMO

A - 20 A - 20

1 OVERVIEW

MELSEC-Q

1 OVERVIEW

The MELSECNET/H system includes the following 2 types of networks:

1) PLC to PLC network for communications between a control station and normal stations

2) Remote I/O network for communications between a remote master station and remote I/O stations

This is the manual to read when building a remote I/O network for MELSECNET/H systems (hereinafter referred to as MELSECNET/H). For building a MELSECNET/H PLC to PLC network, please refer to the Q Corresponding MELSECNET/H Network System Reference Manual. (PLC to PLC network) (SH-080049)

POINT

The Basic model QCPU and safety CPU cannot configure a remote I/O network in a MELSECNET/H network system.

REMARKS

(1) The previous network, called MELSECNET/10H is now called MELSECNET/H. (2) A network module installed on the remote master station is referred to as a

master module. A network module installed on a remote I/O station is referred to as a remote I/O module.

1 - 1 1 - 1

1 OVERVIEW

1.1 Overview

MELSEC-Q

The MELSECNET/H remote I/O network system has more functionality and capacity than the former network system, MELSECNET/10 network system (hereafter referred to as MELSECNET/10). As the MELSECNET/H remote I/O network adopts the same module mounting method as the usual one (mounting I/O modules and intelligent function modules onto the main and extension base units), each module mounted on the remote I/O stations can be handled in the similar way as the basic one. In addition, the usability of the MELSECNET/10 remote I/O network has been further enhanced so that networks can be easily configured for factory automation systems. For the optical loop system in the MELSECNET/H remote I/O network, the communication speed can be set to 25 Mbps or 10 Mbps.

Network system Communication speed

MELSECNET/H

Optical loop

Optical loop, coaxial bus 10 Mbps

1 25 Mbps

1: QJ71LP21-25, QJ71LP21S-25, and QJ72LP25-25 only

Control station (MELSECNET/10 mode)

QCPU normal station

GX Developer

MELSECNET/H (10Mbps)

PLC to PLC network

QCPU

Remote master station

Control station (MELSECNET/H mode)

QCPU normal station

MELSECNET/H (25Mbps) PLC to PLC network

GX Developer

QnACPU

normal station

MELSECNET/H (25Mbps) remote I/O network

Remote I/O station Remote I/O station Remote I/O station

POINT

(1) Select QCPUs for MELSECNET/H remote I/O networks.

AnUCPU

normal station

QCPU

normal station

(2) Remote I/O networks and PLC to PLC networks cannot be mixed on the same

MELSECNET/H network. Always build separate networks.

(3) Only MELSECNET/H network modules can be connected to a MELSECNET/H

remote I/O network. Any MELSECNET/10 network modules (AJ72LP25, A1SJ72QLP25, etc.) are not connectable.

MELSECNET/H (10Mbps) remote I/O network

QCPU normal station

Remote I/O station

1 - 2 1 - 2

1 OVERVIEW

Type of networks

CPU module

QCPU

AnUCPU MELSECNET/10

QnACPU MELSECNET/10

that can be used

MELSECNET/H

(10 Mbps)

MELSECNET/H

(25 Mbps)

The following table shows the types of networks the CPU modules can be connected to.

with CPU

1.2 Features

The MELSECNET/H remote I/O network has the following features.

(1) Realization of a high-speed communication system

(2) Large-scale and flexible system configuration

MELSEC-Q

Network to be connected

MELSECNET/10 MELSECNET/H

PLC to PLC network Remote I/O network PLC to PLC network Remote I/O network

(MELSECNET/10 mode)

(MESLECNET/H mode,

MELSECNET/H

Extended mode)

: Can be used : Cannot be used

(a) High-speed data communication at 10 Mbps/25 Mbps is possible.

(25Mbps is available for only the optical loop type QJ71LP21-25, QJ71LP21S-25 and QJ72LP25-25.)

(a) The link device has a larger capacity: 16384 points for the link relay (LB),

16384 points for the link register (LW), and 8192 points for the link inputs (LX)/link outputs (LY). (Refer to Section 2.1.3, "Available device range settings.")

(b) A maximum of 4096 I/O points can be set for each remote I/O station.

The link points between a remote master station and a remote I/O station can be set up to 1600 bytes. The link points of up to 2000 bytes can be set between a master station and a sub-master station on a multiplexed remote I/O network.

which allows a long station-to-station distance and total distance (up to 30 km (98430 ft.)) and is resistant to noise, or the coaxial bus system (maximum cable distance of 500 m (1640.5 ft.)) which can be wired easily. (Refer to Section 3.1, "Performance Specifications.")

1 - 3 1 - 3

1 OVERVIEW

MELSEC-Q

(d) The following functions facilitate network connection:

1) Any station to be connected in the future can be specified as a reserved station. Specifying a station not actually connected as a reserved station prevents a communication error. (Refer to Section 5.1.3 "Common parameter.")

2) It is not necessary to connect stations in order of the station Nos. in the network. (Refer to Section 4.2.1, 4.2.2.)

(e) The parameters can be written to remote I/O modules using GX Developer

in the same way as to CPU modules.

The parameters of the remote I/O module can be used to change the detailed settings (response time, error time output mode) for I/O modules on the remote I/O station, intelligent function module switch settings and I/O assignments, and remote password settings. (Refer to Section 5.2 "Remote I/O Station Parameter Settings".)

(f) Setting up a master station (DM

) and a sub-master station (DSMR) on the

multiplexed remote I/O network allows the sub-master station to take over the control of remote I/O stations (R) in case of the master station's failure. (The Process CPU should be used for the multiplexed remote master station and sub-master station.) By making a parameter setting, the multiplexed remote sub-master station can continue the control of the remote I/O stations even if the master station has recovered to normal and rejoined to the system. (Setting for the recovered master station to control the remote I/O stations is also available.) (Refer to Section 7.10 "Multiplex Remote Master Function (Process CPU)".)

Multiplexed remote master station (DM

Multiplexed remote

)

sub-master station (DSMR)

Remote I/O station (R) Remote I/O station (R) Remote I/O station (R)

1 - 4 1 - 4

1 OVERVIEW

MELSEC-Q

(g) The redundant system uses the multiplex remote master function to control

I/O modules and intelligent function modules. (The Redundant CPU should be used in the redundant system.) If the multiplexed master station (control system) fails, the multiplex remote master function will switch the master station from "control system" to "standby system". At this time, the multiplexed remote sub-master station is switched from "standby" to "control", continuing the remote I/O control. The sub-master station (control system) that is controlling the remote I/O stations will keep its control even if the master station (standby system) has returned to normal status. (Refer to Section 7.11 "Multiplex Remote Master Function for Redundant System (Redundant CPU)".)

Multiplexed remote master station (DMR) Control system Standby system

Multiplexed remote sub-master station (DSM Standby system Control system

)

Tracking cable

Remote I/O station (R)

(h) A maximum of 7 extension base units can be connected to the remote I/O

module (eight base units including the main base unit), allowing the installation of up to 64 modules. The maximum overall length of extension cables is 13.2m, ensuring a flexible layout of extension base units.

1 - 5 1 - 5

1 OVERVIEW

QCPU Master module

Link register W

Refresh

QCPU Master module

Z.REMTO

(3) Providing versatile communication services

(a) Reading data from and writing data to intelligent function modules mounted

on remote I/O stations are easy.

There are four methods available for reading and writing.

1) Use GX Configurator to make the initial settings and automatic refresh

settings with intelligent function module parameters, and write them into the remote I/O module in the remote I/O station.

By refreshing the intelligent function module data to the link register W of the remote I/O module based on the auto refresh settings, the remote master station can read/write refreshed data by cyclic transmission.

Remote I/O station

Intelligent function module

Remote I/O station

Intelligent function module

Link register LW

Remote master station

QCPU

Intelligent function module parameters

• Initial settings

• Automatic refresh settings

Configurator

2) Link dedicated instructions can be used to directly read from or write to

the buffer memory of the intelligent module.

• REMFR instruction: Reads data from the buffer memory of the remote I/O station intelligent function module.

• REMTO instruction: Writes data to the buffer memory of the remote I/O station intelligent function module.

REMTO

Remote master station

QCPU

Remote I/O module

Link register W

Refresh

Remote I/O module

REMTO

MELSEC-Q

Intelligent

function module

Buffer memory

Intelligent

function module

Buffer memory

1 - 6 1 - 6

1 OVERVIEW

QCPU Master station

JP.WRITE

QCPU Master station

Link register W Link register LW

Refresh

CPU module Network module

I50

Interrupt sequence program

IRET

MELSEC-Q

3) By refreshing the intelligent function module data into the remote I/O module's data register D by the automatic refresh setting of the intelligent function module parameters, the remote master station can read/write data from/to the data register D with READ or WRITE instruction.

WRITE

Remote master station

QCPU

Intelligent function module parameters

• Initial settings

• Automatic refresh settings

Configurator

Remote I/O station

Intelligent function module

Remote I/O module

Data

Refresh

Intelligent

function module

memory

4) The automatic refresh setting of the intelligent function parameters enables the intelligent function module data to be refreshed into the remote I/O module's data register D. By refreshing the data register D to the link register W with the parameter of the remote I/O module, the remote master station can read/write the intelligent function module data by cyclic transmission. This method has the advantage that the intelligent function module parameters created for a QCPU can be applied to the remote I/O module without making any modifications.

Remote master station

QCPU

Intelligent function module parameters

• Initial settings

• Automatic refresh settings

Configurator

Remote I/O station

Intelligent function module

Remote I/O module

Link

Refresh

function module

Data

Refresh

(b) The interrupt sequence program of the host's CPU module can be started

up using the event issue function. This function reduces the response time of the system and enables real-time data reception. (Refer to Section 7.7 "Interrupt Settings".)

MELSECNET/H

MAIN

Normal sequence program

Conditions matched

Condition check

Interrupt condition parameters

• Relay information

• Register data

• Network status

Cyclic transmission

Buffer

Intelligent

Buffer

memory

END

1 - 7 1 - 7

1 OVERVIEW

MELSEC-Q

(4) Enhanced RAS functions (Refer to Section 3.2.2 "RAS functions")

(a) When a faulty station recovers and can resume normal operation, it

automatically returns to the network to resume the data communication using the automatic return function.

(b) By using the loopback function (in the optical loop system), it is possible to

continue data transmission among operational stations by disconnecting faulty areas such as a part of the network where there is a cable disconnection, a faulty station, etc.

some of the connected stations are down due to power off, etc., the normal communication can be continued among other operational stations.

(d) The network module can continue the transient transmission even if an

error, which stops the CPU module, occurs during system operation.

(e) The time of transient error occurrence can be checked.

(f) By mounting 2 power supply modules on a remote I/O station, either of

them can be replaced without powering off the station. (Redundant power supply on remote I/O station) The redundant power supply base unit is required for mounting 2 power supply modules.

(g) When an input module, an output module or an intelligent function module

mounted on a remote I/O station fails, the faulty module can be replaced without stopping the system operation. (Online module change) Online module change is executable for the Q series I/O modules and modules of function version C and later, such as analog-to-digital converter modules, digital-to-analog converter modules, channel isolated thermocouple input modules, and temperature control modules.

REMARKS

The following faults make the RAS functions valid.

• Break in cable

• Power-off of slave station

• Network setting error

• Fault detectable by self-diagnostics of CPU module If the network module has become faulty, the RAS functions may not be activated depending on the fault.

(5) Control of external connection to remote I/O stations (refer to

Section 7.12)

Setting a remote password for a remote I/O station restricts access from the outside via an Ethernet interface module or serial communication module. (Remote password)

1 - 8 1 - 8

1 OVERVIEW

(6) Improved network functions

(a) Intelligent function modules mounted to remote I/O stations can be

diagnosed using the GX Developer system monitor.

Intelligent function modules mounted to remote I/O stations can be diagnosed using the system monitor of GX Developer, which is connected to a remote master station or directly connected to a remote I/O station.

MELSEC-Q

Remote I/O station system monitor

Select

Q64AD

Q64A D system monitor

GX Developer

Remote I/O station

GX Developer

QCPU

Q64AD

Remote master station

Remote I/O station

GX Developer

When the network seems to be faulty, it can be diagnosed through GX Developer connected to the remote master station or any remote I/O station.

(b) If the GX Developer is connected to a remote I/O station, it will not affect the

system operating so user program network function testing can be done online.

It shuts out input (X) from the input module on the remote I/O station and can turn input (X) on or off using the GX Developer test. This allows testing of the remote master station input program to be performed. In addition, it shuts of output (Y) form the remote master station and can turn remote I/O station output (Y) on and off using the GX Developer test. This allows testing of the wires for the output module on the remote I/O station to be performed.

(7) Increased ease of network configuration in combination with GX

Developer

(a) The network parameters can easily be set by visualizing them as pull-down

menus, dialogue boxes, etc.

(b) The settings of network Nos., group numbers and operation modes have

been simplified so that these values can be designated only through software settings.

(Network parameters)

Pull-down menu

bbreviations

1 - 9 1 - 9

)

1 OVERVIEW

1.3 Abbreviations Used in the Text, Tables and Diagrams of This Manual

MELSEC-Q

(1) Abbreviations

Abbreviation Name

MR Remote master station

R Remote I/O station

DMR Multiplexed remote master

DSMR Multiplexed remote sub-master

(2) Marking format

Station number (1 to 64)

Abbreviation

Network No. (1 to 239

[Example]

1) Network No. 3 and remote master station ································· 3M

: Station number "0" is not attached to the remote master station.

2) Network No. 5, remote I/O station, station number 3 ··················· 5R3

3) Network No. 7, Multiplexed remote sub-master, station number 4

·················································································· 7DSM

1 - 10 1 - 10

1 OVERVIEW

1.4 Functions Added/Changed with Upgrade to Function Version D

The following table lists the additional/altered functions for network modules of function

Function Function version Description Reference

Multiplexed remote I/O network for redundant system

Power supply redundancy on remote I/O station

Online module change on remote I/O station

Remote password on remote I/O station

version D.

Function version D

Allows construction of a multiplexed remote I/O network that includes the redundant system as the master station.

Allows the construction of the system that includes a remote I/O station in which 2 power supply modules are mounted for power supply redundancy.

Allows the faulty I/O module or intelligent function module on a remote I/O station to be replaced online while the remote I/O station is running.

Limits the access made from GX Developer via an Ethernet module or serial communication module mounted on a remote I/O station, by setting a password.

MELSEC-Q

Section 7.11

Section 3.2.2 (9)

Section 3.2.2 (10)

Section 7.12

1 - 11 1 - 11

2 SYSTEM CONFIGURATION

MELSEC-Q

This introduces a system comprised of remote I/O networks.

(1) Remote I/O networks and PLC to PLC networks cannot be mixed on the same

(2) Only MELSECNET/H network modules can be connected to a MELSECNET/H

2.1 Single Remote I/O Networks

2.1.1 Configuration

(1) Optical loop system

POINT

MELSECNET/H network. Always build separate networks.

remote I/O network. They cannot be mixed with MELSECNET/10 network modules (AJ72LP25, A1SJ72QLP25, etc.).

Up to 64 remote I/O modules can be connected to a remote master station. Always set the station number of the remote master station to 0.

Station number 0

(remote master station)

QCPU QJ71

LP21

Power supply

Station number 1

(remote I/O station)

QJ72

I/O

LP25

Power supply

I/O

Station number 2

(remote I/O station)

QJ72

I/O

LP25

Power supply

I/O

Optical fiber cable

QJ72

I/O

LP25

Power supply

Station number 64

(remote I/O station)

I/O

QJ72

I/O

LP25

Power supply

Station number 4

(remote I/O station)

I/O I/O

QJ72 LP25

Power supply

Station number 3

(remote I/O station)

I/O

(2) Coaxial cable bus system

Up to 32 remote I/O stations can be connected to a remote master station. Always set the station number of the remote master station to 0.

Station number 0

(remote master station)

QCPU

Power supply

Terminating resistor

(Sold separately)

QJ71 BR11

Station number 1

(remote I/O station)

QJ72

I/O

BR15

Power supply

Coaxial cable

I/O

Station number 32

(remote I/O station)

QJ72

I/O

BR15

Power supply

Terminating resisto

(Sold separately)

I/O

2 - 1 2 - 1

2 SYSTEM CONFIGURATION

MELSEC-Q

2.1.2 Setting items

(1) Table 2.1 lists the setting items on the master module of the remote master station

(MR) and the parameter setting items on GX Developer.

Table 2.1 Remote master station setting items

Setting items Remote master station (MR) Reference

Network module switch

STATION NO. 0 Section 4.2.1

MODE Parameter setting on GX Developer

Setting the number of Ethernet/CC IE/MELSECNET cards

Network type

Starting I/O No.

Network No.

Total stations

Group No. —

Mode Common parameters

Supplementary setting

Station specific parameters —

Refresh parameters

Valid module during other station access Section 5.1.6

Interlink transmission parameters —

Routing parameters 3

: Always set,

Default setting, : Set as needed, : No need to set

MELSECNET/H

(Remote master station)

1: Default values are not set in LX/LY. Set the refresh parameters. 2: Default values are preset for LB/LW.

The CPUs other than the Universal model QCPU may operate even if refresh parameters have not been set. For the operation and precautions, refer to Section 5.1.5 (3).

3: Refer to the Q Corresponding MELSECNET/H Network System Reference

Manual (PLC to PLC Network) (SH-080049).

1 2

Section 4.2.2

Section 5.1.1

Section 5.1.2

Section 5.1.2 Section 5.1.3

Section 5.1.4

Section 5.1.5

2 - 2 2 - 2

2 SYSTEM CONFIGURATION

(2) Table 2.2 lists the setting items on the remote I/O module of the remote I/O

station (R) and the parameter setting items on GX Developer.

Network module switch

STATION NO. 1 to 64 Section 4.2.2

MODE

Parameter setting on GX Developer

PLC system

PLC RAS

I/O assignment 4 Operation setting Section 5.2.1

Ethernet setting 5

CC-Link setting 6

Remote password setting

GX Configurator setting

Initial setting

Auto refresh setting

4 : Refer to the User's Manual (Function Explanation, Program Fundamentals) for

the CPU module used.

5 : Refer to the Q Corresponding Ethernet Interface Module User's Manual (Basic)

(SH-080009). Note that interrupt setting is not available.

6 : Refer to the MELSEC-Q CC-Link System Master/Local Module User's Manual

(SH-080394E). Note that interrupt setting is not available.

2.1.3 Available device ranges

MELSEC-Q

Table 2.2 Remote I/O station setting items

Setting items Remote I/O station (R) Reference

: Always set,

Default setting, : Set as needed, : No need to set

Section 4.2.2

Section 7.12

Section 5.2.1(4)

The remote I/O network can use the following device ranges within each network module. These device ranges indicate the remote master station.

Device Range setting Other

LB 0H to 3FFFH (16384 points)

LW 0H to 3FFFH (16384 points)

LX 0H to 1FFFH (8192 points)

LY 0H to 1FFFH (8192 points)

The device range (excluding that of I/O module mounted on the host

station) should be assigned to each network module.

—

3000

Extended 1

: Available device range

3FFF

H2000H

CPU module

Network module

CPU module

Network module

B/W

LB/LW

X/Y

LX/LY

1000

Actual I/O

1: Expandable by changing from [PLC parameters] - [Device settings]

(4096)

(8192) (12288) (16383)

2 - 3 2 - 3

2 SYSTEM CONFIGURATION

2.2 Multiple Remote I/O Network (Process CPU)

2.2.1 Configuration

A multiplexed remote I/O network system includes a multiplexed remote master station and a multiplexed remote sub-master station. The multiplexed remote sub-master station takes control of remote I/O stations when the multiplexed remote master station fails. Always assign station No. 0 to the multiplexed remote master station. It is allowed to assign any of station number 1 to 64 to the multiplexed remote submaster station, provided that the number is not the same as that of remote I/O station. Sixty-three remote I/O stations can be connected in an optical loop system, 31 stations in a coaxial bus system.

POINT

Only the Process CPU is the CPU module that works as a multiplexed remote master station and multiplexed remote sub-master station. The CPUs other than the Process CPU do not work as a multiplexed remote master station and multiplexed remote sub-master station.

Station No. 0 (Multiplexed remote master station)

QnPH CPU

QJ71 LP21

Station No. 1 (Multiplexed remote sub-master station)

QnPH CPU

QJ71 LP21

Station No. 2 (Remote I/O station)

I/OQJ72

LP25

I/O

MELSEC-Q

Power supply

LP25

Power supply

Station No. 64 (Remote I/O station)

I/O

Power supply

Optical fiber cable

LP25

Power supply

Station No. 4 (Remote I/O station)

I/OQJ72

I/O I/OQJ72

Power supply

I/OI/OQJ72

LP25

Power supply

Station No. 3 (Remote I/O station)

Up to 63 remote I/O stations can be connected in an optical loop system. Up to 31 stations can be connected in a coaxial bus system.

2 - 4 2 - 4

2 SYSTEM CONFIGURATION

2.2.2 Setting items

(1) Table 2.3 lists the parameter setting items of the multiplexed remote master

station (DM

Table 2.3 Setting Items of Multiplexed Remote Master Station and Multiplexed Remote Sub-Master Station

MELSEC-Q

R) and multiplexed remote sub-master station (DSMR).

Setting item

Network module switch

STATION NO. 0 1 to 64 Section 4.2.1

MODE Section 4.2.1

Parameter setting on GX Developer

Setting the number of Ethernet/CC IE/MELSECNET cards

Network type MELSECNET/H

Starting I/O Section 5.1.2

Network No. Section 5.1.2

Total stations

Group No. Section 5.1.2

Mode Section 5.1.2

Common parameters

Supplementary setting Section 5.1.4

Station specific parameters —

Refresh parameters

Valid module during other

station access

Interlink transmission parameter —

Routing parameters 4

: Always set,

Multiplexed remote

master station (DM

(Multiplexed remote

master station)

2 3

Default setting, : Set as needed, : No need to set

Multiplexed remote

sub-master station

(DSM

MELSECNET/H

(Multiplexed remote

sub-master station)

2 3

Reference

Section 5.1.1

Section 5.1.2

Section 5.1.3

Section 5.1.5

Section 5.1.6

POINT

1: Set Total stations and common parameters of the multiplexed remote sub-

master station when using the multiplexed remote sub-master station to resume the network. The settings must be the same as those of the

multiplexed remote master station. For example, if the multiplexed remote master station is powered off and then on during network control by the multiplexed remote sub-master station, the multiplexed remote sub-master station resumes networking as a master operating station.

2 : Default values are not set in LX/LY. Set the refresh parameters. 3 : Default values are preset for LB/LW.

The system may operate even if refresh parameters have not been set. For the operation and precautions, refer to Section 5.1.5 (3).

4 : Refer to the Q Corresponding MELSECNET/H Network System Reference

Manual (PLC to PLC Network) (SH-080049).

2 - 5 2 - 5

2 SYSTEM CONFIGURATION

(2) Table 2.4 lists the setting items that can be set on a remote I/O module operating

as a remote I/O station (R) and the parameter setting items that can be set from GX Developer.

MELSEC-Q

Table 2.4 Setting Items of a Remote I/O Station

Network module main module switch

STATION NO. 1 to 64 Section 4.2.2

MODE Section 4.2.2

GX Developer parameter setting

PLC system

PLC RAS

I/O assignment

Operation setting

Ethernet setting

CC-Link setting

Remote password setting

GX Configurator setting

Initial setting

Auto refresh setting

5 : Refer to the User's Manual (Function Explanation, Program Fundamentals) for

the CPU module used.

6 : Refer to the Q Corresponding Ethernet Interface Module User's Manual (Basic)

(SH-080009). Note that interrupt setting is not available.

7 : Refer to the MELSEC-Q CC-Link System Master/Local Module User's Manual

(SH-080394E). Note that interrupt setting is not available.

2.2.3 Available device ranges

Setting item Remote I/O station (R)

: Always set,

Default setting, : Set as needed, : No need to set

Reference

Section 5.1.2

Section 7.12

Section 5.2.1(4)

The remote I/O network can use the following ranges of devices inside network modules.

Device Available Range Others

LB 0H to 3FFFH (16384 points)

LW 0H to 3FFFH (16384 points)

LX 0H to 1FFFH (8192 points) The device range (excluding that of I/O module

LY 0H to 1FFFH (8192 points)

mounted on the host station) should be assigned to each network module.

—

1000

CPU module

Network module

CPU module

Network module

B/W

LB/LW

X/Y

LX/LY

Actual I/O

1: Expandable b

(4096)

changing from [PLC parameters] - [Device settings]

(8192) (12288) (16383)

3000H

Extended 1

: Available device range

2 - 6 2 - 6

3FFF

H2000H

2 SYSTEM CONFIGURATION

2.3 Multiplexed Remote I/O Network for Redundant System (Redundant CPU)

2.3.1 Configuration

The redundant system including the Redundant CPU utilizes the multiplexed remote I/O network system in order to control I/O modules and intelligent function modules. In the multiplexed remote I/O network system for the redundant system, the master module on the side of the control Redundant CPU (started up as a control system) acts as a multiplexed remote master station and controls remote I/O stations, while the master module mounted on the side of the standby Redundant CPU performs the submaster operation as a multiplexed remote sub-master station. When the control system CPU or the multiplexed remote master station goes down, the multiplexed remote sub-master station switches from "standby" to "control" and takes over the control of the remote I/O stations. Make sure to assign No.0 to the master module mounted on the system A CPU in the redundant system. For the station No. of the multiplexed remote sub-master station, set any of No. 1 to 64, which should not be the same as the station No. of the remote I/O stations. The number of remote I/O stations connectable to a multiplexed remote I/O network for the redundant system is 63 in the optical loop system and 31 in the coaxial bus system.

POINT

The CPU module applicable for the multiplexed remote master or sub-master station in the redundant system is the Redundant CPU only. The CPUs other than the Redundant CPU are not applicable.

MELSEC-Q

REMARKS

Refer to the QnPRHCPU User's Manual (Redundant System) for details on the redundant system.

Station No. 0 (Multiplexed remote master station)

System

QnPRH CPU

Power supply

QJ71

LP21

QJ72 LP25

Power supply

Station No. 64 (Remote I/O station)

Station No. 1 (Multiplexed remote sub-master station)

System

QJ71

LP21

QJ72 LP25

Power supply

Tracking cable

I/O

QnPRH CPU

Optical fiber cable

Station No. 4 (Remote I/O station)

I/O

Station No. 2 (Remote I/O station)

QJ72

I/O

LP25

Power supply

QJ72 LP25

Power supply

Station No. 3 (Remote I/O station)

In the optical loop system, up to 63 remote I/O stations can be connected. Connection of up to 31 stations is allowed for the coaxial bus system.

2 - 7 2 - 7

2 SYSTEM CONFIGURATION

2.3.2 Setting items

(1) Table 2.5 lists the parameter setting items of the multiplexed remote master

station (DM In the redundant system, the same network parameters are set to both the control and standby systems. For this reason, parameter setting for the multiplexed remote sub-master station is not required. Make sure to assign No.0 to the master module mounted on the system A CPU in the redundant system.

Table 2.5 Setting Items of a Multiplexed Remote Master Station and

R) and multiplexed remote sub-master station (DSMR).

a Multiplexed Remote Sub-master Station

MELSEC-Q

Remote sub-

master station

(DSM

Reference

Section 4.2.1

Section 5.1.1

Section 5.1.2

—

Section 5.1.2

Section 5.1.3

Section 5.1.4

—

Section 5.1.5

Section 5.1.6

—

Section 5.1.7

Setting items

Tracking cable connector System A System B Section 7.1.1

Network module switch

STATION NO. 0 1 to 64 Section 4.2.1

MODE

Parameter setting on GX Developer

Setting the number of Ethernet/CC IE/MELSECNET cards

Network type

Starting I/O No.

Network No.

Total stations

Group No.

Mode

Common parameters

Supplementary setting

Station specific parameters

Refresh parameters

Valid module during other station access

Interlink data transfer parameters

Setting of redundant configuration

Routing parameters

: Always set,

Default setting, : Set as needed, : No need to set

Remote master

station (M

MELSECNET/H

(Remote master

station)

1 2

1: Default values are not set in LX/LY. Set the refresh parameters. 2: Default values are preset for LB/LW.

The system may operate even if refresh parameters have not been set. For the operation and precautions, refer to Section 5.1.5 (3).

3: Refer to the Q Corresponding MELSECNET/H Network System Reference

Manual (PLC to PLC Network) (SH-080049).

2 - 8 2 - 8

2 SYSTEM CONFIGURATION

(2) Table 2.6 lists the setting items on the remote I/O module, parameter setting

items on GX Developer and intelligent function module parameter setting items on GX Configurator.

MELSEC-Q

Table 2.6 Setting Items of a Remote I/O Station

Network module main module switch

STATION NO. 1 to 64 Section 4.2.2

MODE Section 4.2.2

GX Developer parameter setting

PLC system

PLC RAS

I/O assignment

Operation setting

Ethernet setting

CC-Link setting

Remote password setting

GX Configurator setting

Initial setting

Auto refresh setting

4 : Refer to the User's Manual (Function Explanation, Program Fundamentals) for

the CPU module used.

5 : Refer to the Q Corresponding Ethernet Interface Module User's Manual (Basic)

(SH-080009). Note that interrupt setting is not available.

6 : Refer to the MELSEC-Q CC-Link System Master/Local Module User's Manual

(SH-080394E). Note that interrupt setting is not available.

2.3.3 Available device ranges

Setting item Remote I/O station (R)

: Always set,

Default setting, : Set as needed, : No need to set

Reference

Section 5.2.1

Section 7.12

Section 5.2.1(4)

The remote I/O network can use the following device ranges in the network module.

Device Available range Others

LB 0H to 3FFFH (16384 points)

LW 0H to 3FFFH (16384 points)

LX 0H to 1FFFH (8192 points)

LY 0H to 1FFFH (8192 points)

The device range (excluding that of I/O module mounted on the host

station) should be assigned to each network module.

—

3000H

Extended 1

: Available device range

3FFF

CPU module

Network module

CPU module

Network module

B/W

LB/LW

X/Y

LX/LY

1000

Actual I/O

1: Expandable by changing from [PLC parameters] - [Device settings]

(4096)

2000

(8192) (12288) (16383)

2 - 9 2 - 9

2 SYSTEM CONFIGURATION

2.4 Multiple Remote I/O Network

2.4.1 Configuration

A multiple remote I/O network system is a network system with many networks connected to it. Set a unique number. The numbers can be set within a range from 1 to 239. Up to four master modules can be mounted on the remote master station. Note that, however, there are restrictions on the number of master modules that can be mounted, depending on the CPU module used. (Refer to Section 2.5.)

QCPU QJ71

Power supply

LP21

MELSEC-Q

QJ71 LP21

Power supply

QJ72 LP25

1R1

Remote I/O net

I/O

Power supply

QJ72 LP25

1R2

I/O

Power supply

QJ72 LP25

2R1

Remote I/O net

I/O

Power supply

QJ72 LP25

2R2

I/O

2 - 10 2 - 10

2 SYSTEM CONFIGURATION

2.4.2 Setting items

(1) Table 2.7 lists the setting items for the master module main module for a remote

master station (MR) and the parameter settings from the GX Developer.

Network module main module switch

STATION NO. 0 Section 4.2.1

MODE

Parameter setting on GX Developer

Setting the number of Ethernet/CC IE/MELSECNET cards

Network type

Starting I/O No.

Network No.

Total number of remote modules

Group No. —

Mode

Common parameters

Supplementary setting Station specific parameters —

Refresh parameters

Valid module during other station access

Inter-link data transfer parameters —

Routing parameters

1: Default values are not set in LX/LY. Set the refresh parameters. 2: Default values are preset for LB/LW.

The CPUs other than the Universal model QCPU may operate even if refresh parameters have not been set. For the operation and precautions, refer to Section 5.1.5 (3).

3: Refer to the Q Corresponding MELSECNET/H Network System Reference

Manual (PLC to PLC Network) (SH-080049).

MELSEC-Q

Table 2.7 Remote master station setting items

Setting items Remote master station (MR) Reference

: Always set,

MELSECNET/H

(Remote master station)

1 2

Default setting, : Set as needed, : No need to set

Section 4.2.1

Section 5.1.1

Section 5.1.2

Section 5.1.3

Section 5.1.4

Section 5.1.5

Section 5.1.6

2 - 11 2 - 11

2 SYSTEM CONFIGURATION

(2) Table 2.8 lists the setting items for the remote I/O module main module for the

remote I/O station (R) and the parameter setting items from the GX Developer.

Network module main module switch

STATION NO. 1 to 64 Section 4.2.2

MODE

GX Developer parameter setting

PLC system

PLC RAS

I/O assignment 4

Operation setting Section 5.2.1

Ethernet setting 5

CC-Link setting 6

Remote password setting

GX Configurator setting

Initial setting

Auto refresh setting

4 : Refer to the User's Manual (Function Explanation, Program Fundamentals) for

the CPU module used.

5 : Refer to the Q Corresponding Ethernet Interface Module User's Manual (Basic)

(SH-080009). Note that the interrupt setting is not available.

6 : Refer to the MELSEC-Q CC-Link System Master/Local Module User's Manual

(SH-080394E). Note that the interrupt setting is not available.

2.4.3 Available device ranges

MELSEC-Q

Table 2.8 Remote I/O station setting items

Setting items Remote I/O station (R) Reference

: Always set,

Default setting, : Set as needed, : No need to set

Section 4.2.2

Section 7.12

Section 5.2.1(4)

The remote I/O network can use the following device ranges in the network module.

Device Available range Others

LB 0H to 3FFFH (16384 points)

LW 0H to 3FFFH (16384 points)

LX 0H to 1FFFH (8192 points)

LY 0H to 1FFFH (8192 points)

The device range (excluding that of I/O module mounted on the host station) should be assigned to each network module.

—

1000

CPU module

Remote I/O network 1

CPU module

Remote I/O network 1

B/W

LB/LW

LB/LWRemote I/O network 2

X/Y

LX/LY

LX/LYRemote I/O network 2

Real I/O

1: Expandable by changing from [PLC parameters] - [Device settings]

(4096)

2000

(8192) (12288) (16383)

Extended function area 1

3000H

3FFF

2 - 12 2 - 12

2 SYSTEM CONFIGURATION

2.5 Applicable Systems

2.5.1 Applicable systems for remote master stations

This section describes applicable systems of remote master stations. No. of mountable modules is the maximum number of mountable network modules with CC-Link IE Controller Network.

(1) Applicable modules and base units, and No. of modules

(a) Mounting with a CPU module

For the CPU modules and base units applicable to the master module and the number of mountable master modules, refer to the following.

• User’s manual for the CPU module used. Depending on the combination with other modules or the number of mounted modules, power supply capacity may be insufficient. Pay attention to the power supply capacity before mounting modules, and if the power supply capacity is insufficient, change the combination of the modules.

(b) Mounting to a MELSECNET/H remote I/O station

The master module cannot be mounted to any MELSECNET/H remote I/O station. Mount it to a CPU module on a master station.

(2) Support of the multiple CPU system

When using the network module in a multiple CPU system, refer to the QCPU User’s Manual (Multiple CPU System) first. To construct the remote I/O network with a multiple CPU system, use a master module of function version B or later. For precautions for the use in a multiple CPU system, refer to Section 2.6.

MELSEC-Q

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2 SYSTEM CONFIGURATION

MELSEC-Q

(3) Network type

The available network type varies depending on the CPU module type, the function version of the master module, and the version of GX Developer/GX

Network type CPU module Master module GX Developer GX Works2

Multiplexed remote I/O network for redundant system

Multiple remote I/O network

Remote I/O network

Q12PRHCPU, Q25PRHCPU

Q02PHCPU, Q06PHCPU

Q12PHCPU, Q25PHCPU

Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU, Q12PHCPU, Q25PHCPU Q00UJCPU, Q00UCPU, Q01UCPU Q02UCPU, Q03UDCPU, Q04UDHCPU, Q06UDHCPU

Q10UDHCPU, Q20UDHCPU

Q13UDHCPU, Q26UDHCPU

Q03UDECPU, 04UDEHCPU, Q06UDEHCPU,Q13UDEHCPU, Q26UDEHCPU

Q10UDEHCPU, Q20UDEHCPU

Q50UDEHCPU, Q100UDEHCPU

Q03UDVCPU, Q04UDVCPU, Q06UDVCPU, Q13UDVCPU, Q26UDVCPU

Works2.

Function version D or later

Function version B or later (Serial No. (first five digits) "04012" or later) Function version B or later (Serial No. (first five digits) "04012" or later)

Function version B or later

Function version B or later Function version B or later Function version B or later Function version B or later

Function version B or later

Function version B or later Function version B or later

Function version B or later

Version 8.18U or later

Version 8.68W or later

Version 7.10L or later

Version 6 or later

Version 8.76E or later

Version 8.48A or later

Version 8.76E or later

Version 8.62Q or later

Version 8.68W or later

Version 8.76E or later

Not supported

Version 1.87R or later

Version 1.40S or later

Version 1.95Z or later

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2 SYSTEM CONFIGURATION

2.5.2 Applicable systems for remote I/O stations

This section explains application systems of remote I/O stations. Mount a remote I/O module to a CPU slot of any of the main base units.

(1) Applicable main base units, power supply modules and No. of

modules

Main base unit*1 Power supply module

Q33B, Q35B, Q38B, Q312B Q6 P

Q35BL, Q38BL (Q series large type main base unit) Q35BLS, Q35BLS-D, Q38BLS, Q38BLS-D (AnS size Q series large type main base unit)

Q32SB, Q33SB, Q35SB (Slim type main base unit)

Q61SP

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Number of mountable

remote I/O modules

1 (mounted in the CPU

slot)

Q35DB, Q38DB, Q312DB (Multiple CPU high-speed main base unit)

Q38RB (Main base unit for the redundant power supply system)

Q63RP, Q64RP

*1: Total of up to 64 modules can be mounted to a base unit. Mount a module

within the number of I/O points for the remote I/O module. If the number of slots is within the available range, the module can be mounted on any slot.

*2: Depending on the combination with other modules or the number of

mounted modules, power supply capacity may be insufficient. Pay attention to the power supply capacity before mounting modules, and if the power supply capacity is insufficient, change the combination of the modules.

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2 SYSTEM CONFIGURATION

(2) Applicable extension base units

A system with a remote I/O module can be connected with extension base units.

Q63B, Q65B, Q68B, Q612B (Extension base unit (type requiring power supply module)) Q53B, Q55B (Extension base unit (type requiring no power supply module)) Q65BL, Q68BL (Q series large type extension base unit (type requiring power supply module)) Q55BL (Q series large type extension base unit (type requiring no power supply module)) Q65BLS, Q65BLS-D, Q68BLS, Q68BLS-D (AnS size Q series large type extension base unit (type requiring power supply module)) Q55BLS, Q55BLS-D (AnS size Q series large type extension base unit (type requiring no power supply module)) Q68RB (Extension base unit for redundant power supply system)

*1: When using an extension base unit (type requiring no power supply

module), calculate the operating voltage of the unit to check that it is within the specified range.

1) For the calculation method, refer to the QCPU User's Manual (Hardware

2) For the current consumption of modules mounted on the base unit, refer

*2: Note the following points when using extension cables.

1) Do not install extension cables together with the main circuit (high

2) Connect an extension cable from the OUT of the extension cable

(3) Network type

The available network type varies depending on the function version of the remote module and the version of GX Developer.

Network type Remote I/O module GX Developer GX Works2

Multiplexed remote I/O network for redundant system Multiple remote I/O network Remote I/O network

MELSEC-Q

Extension base unit

Extension cable

(Maximum distance:

13.2m or less)

QC05B, QC06B,

QC12B, QC30B, QC50B, QC100B

model

Number of

extension base

units

Up to 7

Design, Maintenance and Inspection).

to the manual of the corresponding module.

voltage, large current) cables.

connector of the base unit to the IN of the next extension base unit.

Function version D or later

Version 6 or later

Function version B or later Version 1.40S or later

Version 1.87R or later

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2 SYSTEM CONFIGURATION

(4) Applicable modules

The Q series modules can be used on remote I/O stations. Note that some modules have restrictions. (a) Functional restrictions

The use of interrupt pointers and dedicated instructions for intelligent function modules are not supported. For the restrictions of functions for each module, refer to the user's manual for the module used.

(b) No. of mountable modules

QJ71E71-B5, QJ71E71-B2, QJ71E71-100, QJ71E71 QJ61BT11N, QJ61BT11 Up to 4 Modules other than those listed above Up to 64

1: The module with function version B or later is available.

(5) Units/modules not applicable

The following units/modules cannot be used on remote I/O stations.

Redundant type extension base unit Q65WRB AnS series extension base unit QA1S65B, QA1S68B, QA65B, QA68B CC-Link IE Controller Network module QJ71GP21-SX, QJ71GP21S-SX CC-Link IE Field Network master/local module

MELSECNET/H module

Web server module QJ71WS96 MES interface module QJ71MES96 AS-i master module QJ71AS92 High speed data logger module QD81DL96 High speed data communication module

Interrupt module

1: These modules cannot be used when switched to interrupt modules by

turning off the function selecting switch (SW2).

(6) ERR. contact of the power supply module

The operation of the ERR. contact of the power supply module differs depending on the combination with the base unit used. For the operation of the ERR. contact, refer to the QCPU User's Manual (Hardware Design, Maintenance and Inspection).

MELSEC-Q

Module Name No. of mountable modules

Up to 41

Item Module model name

QJ71GF11-T2

QJ71LP21, QJ71LP21-25, QJ71LP21S-25, QJ71LP21G, QJ71BR11, QJ71NT11B

QJ71DC96

QI60, QX40H

1, QX70H 1, QX80H 1, QX90H1

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2 SYSTEM CONFIGURATION

(7) Online module change

In the following cases, the online module change cannot be performed. (a) When an extension base unit (type requiring no power supply module)

(Q52B, Q55B, Q55BL, Q55BLS, or Q55BLS-D) is used (No module mounted on any extension base unit can be changed online.)

(b) When a slim type power supply module (Q61SP) is used

(8) MELSECNET/10 mode

The MELSECNET/10 mode can be set with the remote I/O module whose serial No. (first five digits) is "15012" or later.

(9) Precautions for mounting an intelligent function module

Note that the number of intelligent function module parameters that may be set (initial setting, automatic refresh setting) is limited on the remote I/O module. If the number of parameters set exceeds the limited number, the remote I/O module detects the "SP. PARA ERROR (3301)" error. To auto refresh the excessive parameters, use the REMFR/REMTO instruction to read/write data from/to the intelligent function module.

Initial setting Up to 512 Auto refresh setting Up to 256

The number of parameters for initial setting is fixed for each intelligent function module. To check the numbers of parameters for initial setting, refer to the user's manuals for the corresponding intelligent function modules. For the way to count the number of parameters for automatic refresh setting, refer to Section 5.2.1 (4).

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Item No. of the parameters that can be set

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2 SYSTEM CONFIGURATION

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2.6 When Using a Multiple CPU System

Take the following points into consideration when configuring a remote I/O network by utilizing multiple CPU system.

(1) Use the master module of function version B or later.

(2) Set the network parameters to the control CPU controlling the master module.

(3) It is possible to set up to four master modules per control CPU. Note that the

(a) CPU No. 1 controls all master modules (b) CPU No. 1 and CPU No. 2 control each master

maximum number of mountable master modules per multiple CPU system is four.

module

QJ71

QJ71 BR11

CPU No. 1

CPU No. 2

QJ71 BR11

CPU No. 1

CPU No. 2

BR11

CPU No. 1

CPU No. 2

CPU No. 3

CPU No. 4

QJ71 BR11

modules per system is four

QJ71

CPU No. 2

QJ71 BR11

BR11

CPU No. 1

QJ71 BR11

: The number of mounted modules exceeds the limit by one.

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2 SYSTEM CONFIGURATION

(4) By connecting to a remote I/O station for access to other stations, GX Developer

can access stations in the other network system, whether the relay stations in the multiple CPU system are controlled by the same or different CPUs. Also, GX Developer can access either the control CPU or non-control CPU in the multiple CPU system.

(a) Accessible to the remote I/O stations in another

network

GX Developer

MELSEC-Q

(b) Accessible to the control CPU in another network

GX Developer

CPU

No. 1

No. 2

CPU No.1 is control CPU

QJ72 BR15

QJ71 BR11

I/O

QJ72 BR15

I/O

network

GX Developer

CPU No. 1

CPU No. 2

CPU No. 1

QJ72 BR15

QJ71 BR11

CPU No. 2

QJ71 BR11

I/O

QJ71 BR11

I/O

CPU No.1 is control CPU

(d) Accessible to another network even if the relayed

station is controlled by another control CPU

GX Developer

CPU No. 2

CPU No. 1

QJ72 BR15

QJ71 BR11

CPU No. 2

I/O

QJ71 BR11

I/O

CPU No.2 is control CPU

CPU No.1 is control CPU

QJ72 BR15

QJ71

CPU No. 1

CPU No. 2

CPU No. 1

BR11

CPU No. 2

QJ71 BR11

I/O

CPU No.1 is control CPU

CPU No. 1

CPU No.1 is

control CPU

CPU No.1 is

control CPU

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2 SYSTEM CONFIGURATION

(5) When all of the following conditions from a) to d) are met, use a MELSECNET/H

module whose serial No. (first five digits) is "10042" or later.

(a) A multiple CPU system containing a Built-in Ethernet port QCPU is

configured.

(b) To the Ethernet port of the Built-in Ethernet port QCPU, GX Developer or

GOT is connected.

MELSECNET/H module controlled by another CPU.

(d) The access target on another station is an A/QnA series CPU module.

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2 SYSTEM CONFIGURATION

2.7 Checking Function Version and Serial No.

The serial No. and function version of the network module can be confirmed on the rating plate and GX Developer's system monitor.

(1) Checking the serial No. on the rating plate

The rating plate is situated on the side face of the network module.

MELSEC-Q

Serial No. (first five digits)

Function version

Relevant regulation standards

(2) Checking on the front of the module

The serial No. and function version on the rating plate are also indicated on the front of the module (lower part). The following network module is not included.

• QJ71LP21

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2 SYSTEM CONFIGURATION

(3) Checking the serial No. on the system monitor (Product Information

List)

To display the system monitor, select [Diagnostics] [System monitor] Product Inf. List button of GX Developer.

MELSEC-Q

(a) Production number display

Since the network module does not support the production number display, "-" is displayed.

POINT

The serial No. displayed in the Product Information List of GX Developer may be different from the one on the rating plate and the front of the module.

• The serial No. on the rating plate and the front of the module indicates the management information of the product.

• The serial No. in the Product Information List of GX Developer indicates the functional information on the product, which is updated when a new function is added.

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3 SPECIFICATIONS

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3 SPECIFICATIONS

The following describes the network system specifications, performance specifications and the specifications for sending and receiving link data. For general specifications, refer to the user's manual of the CPU module to be used on the network system.

3.1 Performance Specifications

3.1.1 Optical loop system performance specifications

Item

Maximum number of links per network

Maximum number of links per station

Maximum I/O points per remote I/O station

Device points per remote I/O station

Communication speed 10 Mbps

Number of stations per network 65 stations (Remote master stations: 1 Remote I/O stations: 64)2 Overall distance 30 km

Distance between stations

Network cable Optical fiber cable (procured by a user)3 Applicable connectors 2-core optical connector plug (procured by a user) Maximum number of networks 239 (Total including PLC to PLC networks) Transmission path format Duplex loop Communication method Token ring Synchronization method Frame synchronization Coding method NRZI code (Non Return to Zero Inverted) Transmission format HDCL standards (Frame format) Error control CRC (X16 + X12 + X5 + 1) and retry by timeover

RAS functions

Application function • Remote password for remote I/O station

Transient transmission

LX/LY 8192 points

25 Mbps —

10 Mbps

Table 3.1 lists the performance of the optical loop system.

Table 3.1 Optical loop system performance specifications

QJ71LP21 QJ71LP21G QJ71LP21GE QJ71LP21-25 QJ71LP21S-25 QJ72LP25-25 QJ72LP25G QJ72LP25GE

16384 points (Remote master station

• Remote Master Station

• Remote I/O station Remote Master Station ((LX + LB)/8 + (2 LW))  1600 bytes

• Multiplexed remote master station multiplexed remote sub-master station ((LY + LB) /8 + (2 LW))  2000 bytes

M 8192 points

SM 2048 points

D 12288 points

SD 2048 points

SI optical cable : 500m

H-PCF optical cable : 1km band H-PCF optical cable : 1km optical cable : 1km

• Loop-back function due to error detection or broken cable

• Diagnostic function for checking local link lines

• Detection using link special relays or link special registers

• Backup of power suppl y on a remote I/O station

• Online module change in a remote I/O station

• 1:1 communication (Monitor, program upload/download, etc.)

• Various send/receive commands from the programmable controller program (READ/WRITE,REMFR/REMTO)

Broad-

QSI

GI-50/125 optical cable : 2km

Remote master station Remote I/O station

station, remote I/O station

station, remote I/O station Remote I/O station ((LY + LB)/8 + (2 LW))  1600 bytes1

If the X/Y numbers are the same, only one side is taken into consideration.

GI-62.5/125 optical cable : 2km

remote sub-master station, remote I/O station: 8192 points, remote sub-master

SI optical cable : 200m H-PCF optical cable : 400m Broad-band H-PCF optical cable : 1km

SI optical cable: 500m 1km 1km

remote master station: 8192 points)

X + Y  4096 points

25 Mbps /10 Mbps /

(selected with MODE switch)

QSI optical cable : 1km

H-PCF optical cable: Broad-band H-PCF optical cable: QSI optical cable: 1km

GI-50/125 optical cable : 2km

10 Mbps

—

GI-62.5/125 optical cable : 2km

3 - 1 3 - 1



3 SPECIFICATIONS

Item

QJ71LP21 QJ71LP21G QJ71LP21GE QJ71LP21-25 QJ71LP21S-25 QJ72LP25-25 QJ72LP25G QJ72LP25GE

Number of occupied I/O points 32 points (Intelligent function module: 32 points)

Voltage

External Power

Supply

5 V DC internal current consumption

External dimensions

Weight 0.11 kg 0.20 kg 0.15 kg

Current Size of terminal

screw Suitable crimp terminal Suitable cable size

Tightening torque

Allowable momentary power failure time

Noise immunity —

98 (3.86)(H)

27.4 (1.08)(W) 90 (3.54)(D) [mm (inch)]

1: The remote master station includes the multiplexed remote master station and multiplexed remote sub-master station. 2: On a multiplexed remote I/O network, one of 64 remote I/O stations works as a multiplexed remote sub-master station. 3: The optical fiber cable (A-2P4: Two slots are occupied.

) differs in interstation distance between the L and H types. Refer to Section 4.8.1 for details.

Set the numeric value resulted from adding 10 “Network parameter”. The first empty 16 points can be set to “0” on the “I/O assignment” tab screen within the “Q Parameter” screen. Example: Set 10 (Set 0

H as the “Starting I/O No.” when 0 has been set to slot 0 on the “I/O assignment” tab screen.)

H as the “Starting I/O No.” when the module is mounted on slot 0.

Remote master station Remote I/O station

48 points (I/O Assignment: empty; first 16, intelli.; second

32)

—

0.55 A 0.89 A

H to the I/O No. of the slot where a module mounted as the “Starting I/O No.” of the

20.4 to 31.2 V DC

0.20 A

M3 Screw

R1.25-3

0.3 to 1.25 mm

0.42 to 0.58 m

1ms (Level PS1)

By noise simulator of 500Vp-p noise voltage, 1ms noise width, and 25 to 60Hz noise frequenc

98 (3.86)(H)

55.2 (2.18)(W) 90 (3.54)(D)

[mm(inch)]

98 (3.86)(H)

MELSEC-Q

—

27.4 (1.08)(W) 90

(3.54)(D) [mm (inch)]

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3 SPECIFICATIONS

3.1.2 Coaxial cable system performance specifications

MELSEC-Q

Table 3.2 lists the performance of the coaxial bus system.

Table 3.2 Coaxial cable system performance specifications

Item

Maximum number of links per network

Maximum number of links per station

Maximum I/O points per remote I/O station

Device points per remote I/O station

Communication speed 10 Mbps

Number of stations per network 33 stations (Remote master stations: 1 Remote I/O stations: 32)2

Overall distance

Can be extended up to 2.5 km with the use of a repeater (A6BR10,A6BR10-DC) Maximum number of networks 239 (Total including PLC to PLC networks) Transmission path format Single layer bus Communication method Token bus Synchronization method Frame synchronization Coding method Manchester code Transmission format HDCL standards (Frame format) Error control CRC (X16 + X12 + X5 + 1) and retry by timeover

RAS functions

Application function • Remote password for remote I/O station

Transient transmission

Maximum number of modules per CPU Number of I/O points 32 points (Intelligent function module: 32 points) — 5 V DC internal current consumption 0.75 A 1.10 A External dimensions 98 (3.86)(H) 27.4 (1.08)(W) 90 (3.54)(D) [mm (inch)] Weight 0.11 kg 0.16 kg

LX/LY 8192 points

M 8192 points

SM 2048 points

D 12288 points

SD 2048 points

3C-2V

5C-2V

5C-FB

16384 points (Remote master station

• Remote Master Station

• Remote I/O station Remote Master Station ((LX + LB)/8 + (2 LW))  1600 bytes

• Multiplexed remote master station multiplexed remote sub-master station ((LY + LB) /8 + (2 LW))  2000 bytes

• Station separation function due to error detection or cable disconnection

• Diagnostic function for checking local link lines

• Detection using link special relays or link special registers

• Configuring a redundant power supply on a remote I/O station

• Online module change in a remote I/O station

• 1:1 communication (Monitor, program upload/download, etc.)

• Various send/receive commands from the programmable controller program (READ/WRITE,REMFR/REMTO)

1: The remote master station includes the multiplexed remote master station and multiplexed remote sub-master station. 2: On a multiplexed remote I/O network, one of 32 remote I/O stations works as a multiplexed remote sub-master station. 3: There are restrictions on the interstation cable length depending on the number of connected stations. Refer to Section 4.8.2 for

details.

Remote master station Remote I/O station

QJ71BR11 QJ72BR15

station, remote I/O station

Remote I/O station ((LY + LB)/8 + (2 LW))  1600 bytes1

If the X/Y numbers are the same, only one side is taken into consideration.

4 modules —

remote sub-master station, remote I/O station: 8192 points, remote sub-master

300 m (Between stations 300 m)

500m (Between stations 500 m)

remote master station: 8192 points)

X + Y  4096 points

3 - 3 3 - 3

3 SPECIFICATIONS

3.1.3 Optical fiber cable specifications

This section explains the specifications of the optical fiber cables used with the MELSECNET/H optical loop system. Confirm that the cable in use conforms to the details of the optical fiber cable specifications. A technical skill and a special tool are needed when connecting an optical fiber cable to an exclusive connector. Optical fiber cables with connectors are also available. For cabling, please consult your local Mitsubishi representative.

Table 3.3 Optical fiber cable specifications

MELSEC-Q

Item

Interstation

distance

Transmission loss 12 dB/km 6 dB/km 5 dB/km 5.5 dB/km 3 dB/km 3 dB/km

Core diameter 200  m 200  m 200  m 185  m 50  m 62.5  m

Clad diameter 220  m 250  m 250  m 230  m 125  m 125  m

Primary membrane 250  m — — 250  m — —

Applicable connector F06/F08 or equivalent (JIS C5975/5977 conformance)

10 Mbps 500 m 1 km 1 km 1 km 2 km 2 km

25 Mbps 200 m 400 m 1 km 1 km Must not be used Must not be used

SI (Multi-

particulate glass)

H-PCF (Plastic-

clad)

Broad-band H-

PCF (Plastic-clad)

QSI (Quartz

glass)

QI-50/125 (Quartz

glass)

QI-62.5/125

(Quartz glass)

REMARKS

The following types of optical fiber cables are available.

A type: Cable for connection inside control panel B type: Cable for connection between control panels inside a building C type: Cable for outdoor connection

D type: Reinforced cable for outdoor connection For other special-purpose cables such as flexible cables or heat-resistant cables, please contact your local Mitsubishi representative.

(1) Cable loss of GI-62.5/125 optical fiber cable

Conversion cable (1m) *1

QJ71LP21GE QJ72LP25GE

Adaptor

5.5 dB or less

Conversion cable (1m)

Adaptor

OUT

Optical module

SD RD

Connection loss: 1 dB (max.) Connection loss: 1 dB (max.)

Total cable loss = 7.5 dB or less

SD RD

1: Conversion cable

Conversion Type Cable

CA type FC type AGE-1P-CA/FC1.5M-A CA type ST type AGE-1P-CA/ST1.5M-A CA type SMA type AGE-1P-CA/SMA1.5M-A

Purchased from: Mitsubishi Electric Europe GmbH

3 - 4 3 - 4

3 SPECIFICATIONS

3.1.4 Coaxial cable specifications

The following table lists the specifications of the coaxial cables used for the coaxial bus system. Use the following high frequency coaxial cables:

• 3C-2V (JIS C 3501 compliant)

• 5C-2V (JIS C 3501 compliant)

• 5C-FB (JIS C 3502 compliant) However, when configuring a multiplexed remote I/O network for redundant system, use a double shield coaxial cable. (Refer to section 4.8.2.)

(1) Coaxial cable specifications

The specifications of the coaxial cable are shown in Table 3.4. Select coaxial cables that meet the operating ambient temperature (0 to 55 listed in the general specifications of the programmable controller.

Table 3.4 Coaxial cable specifications

Item 3C-2V 5C-2V 5C-FB

MELSEC-Q

)

Structure

Cable diameter 5.4 mm (0.21 in.) 7.4 mm (0.29 in.) 7.7mm (0.3in.)

Minimum allowable bend radius 22 mm (0.87 in.) or more 30 mm (1.18 in.) or more 30 mm (1.18 in.) or more

Internal conductor diameter 0.5 mm (0.02 in.) (annealed copper wire) 0.8 mm (0.03 in.) (annealed copper wire) 1.05mm (0.04 in.) (annealed copper wire)

Insulating material diameter 3.1 mm (0.12 in.) (polyethylene) 4.9 mm (0.19 in.) (polyethylene) 5.0mm (0.2 in.) (polyethylene)

External conductor diameter

Applicable connector plug

1: This connector plug is a soldering-type connector plug. 2: This connector plug is a crimping-type connector plug.

3.8 mm (0.15 in.) (single annealed copper wire mesh)

3C-2V connector plug The following connector plugs are recommended:

• BNC-P-3-NiCAu (Manufactured by DDK Ltd.)

• BCP-C3B (Manufactured by Canare Electric Co., Ltd.)

Internal conductive material

The following connector plugs are recommended:

• BNC-P-5-NiCAu (Manufactured by DDK Ltd.)

• BCP-C5B (Manufactured by Canare Electric Co., Ltd.)

Insulating material

6.6 mm (0.26 in.) (single annealed copper wire mesh)

5C-2V connector plug

External conductor

Outer Sheath

5.7mm (0.22 in.)(aluminum foil tape and annealed copper wire mesh)

5C-FB connector plug

BCP-C5FA

Electric Co., Ltd.) is recommended.

(manufactured by Canare

REMARKS

To order or for inquiries regarding connector plugs and coaxial cables, please consult your local Mitsubishi representative.

3 - 5 3 - 5

3 SPECIFICATIONS

(2) Connecting the coaxial cable connectors

CAUTION

 Solder the coaxial cable connectors properly. Insufficient soldering may result in

malfunctions.

Components of the BNC connector

MELSEC-Q

The following section explains how to connect the BNC connector (the connector plug for the coaxial cable) to the cable.

(a) Using a BNC connector manufactured by DDK Ltd.

The following explains how to connect the BNC-P-3-NiCAu or BNC-P-5NiCAu to the cable.

• Structure of the BNC connector and coaxial cable

Nut Washer Gasket

Plug shell

Clamp Contact

• How to connect the BNC connector and the coaxial cable

1) Cut the portion of the outer sheath of the coaxial cable as

Cut this portion of the outer sheath

shown in the diagram below.

Applicable cable A

3C-2V 15mm (0.59 in.)

5C-2V, 5C-2V-CCY 10mm (0.4 in.)

2) Fit the nut, washer, gasket and clamp onto the coaxial cable, as shown below, and then loosen the external conductor.

Clamp

Nut

Washer

Gasket

3) Cut the external conductor, insulating material and internal conductor to the dimensions shown below. Note that the external conductor should be cut to the same dimension as the tapered section of the clamp and smoothed down

Internal conductor

3 - 6 3 - 6

to the clamp.

Insulating material

Clamp and external conducto

Applicable cable B C

3C-2V 6mm (0.24 in.) 3mm (0.12 in.)

5C-2V, 5C-2V-CCY 7mm (0.28 in.) 5mm (0.2 in.)

3 SPECIFICATIONS

(1) The following precautions should be observed when soldering the internal

(2) Before connecting or disconnecting the coaxial connector, touch a grounded

MELSEC-Q

4) Solder the contact to the internal conductor.

5) Insert the connector assembly shown in 4) into the plug shell and screw the nut into the plug shell.

POINT

conductor and contact:

• Make sure that the solder does not bead up at the soldered section.

• Make sure that there are no gaps between the connector and cable insulating material and that they do not cut into each other.

• Solder as quick as possible so the insulating material does not deform.

metal object to discharge the static electricity from the human body. Failure to do so may result in a module malfunction.

3 - 7 3 - 7

3 SPECIFICATIONS

MELSEC-Q

(b) Using a BNC connector manufactured by Canare Electric Co., Ltd.

The following explains how to connect the BCP-C3B, BCP-C5B, or BCPC5FA to the cable.

• Structure of the BNC connector and coaxial cable

• How to connect the BNC connector and the coaxial cable

1) Thread a coaxial cable through a crimping sleeve as shown in the figure below.

When using a cable with aluminum tape, cut the tape as shown in the figure below. When cutting the tape, make a clean cut, without leaving any stray pieces or loose strands. Failure to do so may cause a short circuit or

POINT

(1) Use a crimp tool specified for a BNC connector. (2) Do not crimp the junction of the insulating material and the center contact pin. (3) Horizontally insert the center contact pin into the insulating material and crimp

the pin. If the pin is on the tilt, straight it.

result in an improper crimp.

2) Insert a center contact pin into the internal conductor. Crimp the pin using a crimp tool to seal the gap between the center contact pin and the insulating material.

3 - 8 3 - 8

3 SPECIFICATIONS

MELSEC-Q

3) After the crimp, check the crimp height of the crimp part. When the crimp height at the measurement position is between 1.4mm and

1.5mm, the pin is properly crimped. If the crimp height is not between 1.4mm and 1.5mm, adjust the crimp tool and crimp the center contact pin again.

4) Hold the root of the coaxial cable and fully insert the cable into a plug. After inserting the cable, pull it lightly to check that the center contact pin is fixed.

POINT

Before connecting or disconnecting the coaxial connector, touch a grounded metal object to discharge the static electricity from the human body. Failure to do so may result in a module malfunction.

Move the crimp sleeve until it contacts with the plug.

5) Crimp the crimp sleeve using the crimp tool with attention paid to the orientations of the crimp tool and connector. Do not pull the cable when crimping the sleeve.

3 - 9 3 - 9

3 SPECIFICATIONS

3.2 Function Specifications

The following introduces the MELSECNET/H remote I/O network functions. The functions are listed below.

MELSEC-Q

3 - 10 3 - 10

)

3 SPECIFICATIONS

3.2.1 Cyclic transmission function (periodic communication)

The cyclic transmission function periodically exchanges data between the remote master station and remote I/O station using link device (LX/LY/LB/LW) The following explains the differences between when the module connected to the remote I/O station is an I/O module and when it is an intelligent module connected to it.

(1) Communicating with I/O modules

The remote master station uses input/output X/Y(LX/LY) devices after the actual I/O for the host so that there can be communication with the I/O module on the remote I/O station. To perform communications between the remote master station and the remote I/O station, write the network parameters to the remote master station. The device range for communicating with each remote I/O station is set by the remote master station common parameters. PLC parameters written to the remote I/O station will not cause problems with the I/O module communication, even with the default settings. Change the settings of

Remote master station

the PLC parameters as needed.

Remote I/O station

MELSEC-Q

X1000

Y1010

QCPU

Actual I/O

1000

to to

100F

1FFF

1010

101F

Master module

LX LY

1000

100F

1FFF

1010

101F

Remote I/O module

LX LY

Input module Output module

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

1) When X0 for the input module for the remote I/O station is set to on, the X1000 for the remote I/O station is set to on.

2) When Y1010 for the remote master station is set to on, the Y10 for the remote I/O station output module is set to on.

1A 1B 1C 1D 1E 1F

10 11 12 13 14 15 16 17 18 19

3 - 11 3 - 11

3 SPECIFICATIONS

(2) Communicating with intelligent function modules

The remote master station can communicate with the intelligent function module

Methods for communicating with the intelligent module Features

By cyclic transmission (common parameters) +

(a)

intelligent function module parameters (Automatic refresh target device W).

Dedicated instructions for the intelligent function module

(b)

(REMFR,REMTO)

By cyclic transmission (common parameters) + intelligent function module parameters (Automatic refresh target device D).

(c)

Remote I/O station parameters (parameters for transmitting between devices)

Link dedicated instructions (READ,WRITE)

(d)

Intelligent function module parameters (Automatic refresh target device D)

mounted to the remote I/O station in the following four ways.

When the intelligent function module is mounted to a nearby slot of the CPU module, the same kind of sequence program can be created. Regular time data can be read without regard to timing GX Configurator is not needed. Data can be communicated only when needed. When the intelligent function module is mounted to a nearby slot of the CPU module, the same kind of sequence program can be created. In a way different from the method 1, it is also possible to set the intelligent function module parameters in the same way as the setting for the host. When the intelligent function module is mounted to a nearby slot of the CPU module, the same kind of sequence program can be created. Data can be communicated only when needed.

In communication methods (a), (c) and (d), when there is communicating between remote master station and remote I/O station, the network parameters are written to the remote master station and the PC parameters and intelligent function module parameters are written to the remote I/O station. The device range for communicating with each remote I/O station is set by the remote master station common parameters. PC parameters written to the remote I/O station will not cause problems with the intelligent function module communication, even with the default settings. Change the settings of the PLC parameters as needed.

POINT

(1) Note that the number of intelligent function module parameters (initial setting,

automatic refresh setting) that may be set is limited. If the number of parameters set exceeds the limited number, the remote I/O module detects the "SP. PARA ERROR (3301)" error. To auto refresh the excessive items, use the REMFR/REMTO instruction to read/write data from/to the intelligent function module.

Item No. of the parameters that can be set

Initial setting Up to 512

Auto refresh setting Up to 256

The number of parameters for initial setting is preset to each intelligent function module. To confirm the numbers of parameters for initial setting, refer to the user's manuals of the corresponding intelligent function modules. Refer to Section 5.2.1(4) for the way to count the number of parameters for automatic refresh setting.

(2) A remote master station cannot execute the dedicated instructions for

intelligent function module to the intelligent function modules mounted in a remote I/O station.

MELSEC-Q

3 - 12 3 - 12

3 SPECIFICATIONS

With this method, since data is read and written periodically, there is no interlock with the intelligent function module.

Remote master station

MELSEC-Q

(a) The CPU module reads and writes intelligent function module data at fixed

intervals, using the following devices and setting.

• X/Y (LX/LY) and B/W (LB/LW) devices that are set with common parameters

• Intelligent function module parameters (auto refresh setting) written to the remote I/O module

The intelligent function module parameters are created by GX Configurator. (For more detailed information, refer to the manual for the intelligent function module you are using.)

· · · ·With this method, a sequence program can be created to allow

communication in the same way as with an intelligent function module mounted to the same base units as the CPU module. The analog input values for the analog-digital converter module, the current values of the high speed counter module and others are periodically read and suited for periodic writing of the analog output value for the digital-analog converter module.

POINT

Remote I/O station

Intelligent

function module

Buffer

2)LW memory

X/Y

MOV W0 D0

MOV D10 W10

X1000

QCPU

Y1018

Master module

LX/LY

Remote I/O module

Initial settings

3)4)

5) LX/LY

LW(W)

[Buffer memory]

1) GX Configurator is used to write the initial settings for the intelligent function module and the automatic refresh settings to the remote I/O station remote I/O module.

2) The remote I/O module follows the automatic refresh settings and refreshes the data in the buffer memory of the intelligent function module to link register W of the remote I/O module.

3) Link register W, follows the common parameters set in the remote master station for communication between the remote master station and the remote I/O station.

3 - 13 3 - 13

3 SPECIFICATIONS

Remote master station

QCPU

Master module

MELSEC-Q

4) QCPU follows the refresh parameters and refreshes link register W between QCPU and the master module.

[Input/output]

5) X/Y(LX/LY) is the same as communication with I/O module.

(b) The CPU module reads or writes data using a link dedicated instruction

(REMFR/REMTO). With a link dedicated instruction (REMFR/REMTO), data are directly read from or written to the buffer memory of the intelligent function module on the remote I/O station.

· · · ·This method can be used for the following applications.

• During intelligent function module control, when reading and writing data with the sequence program only when data is needed.

• When an interlock with the intelligent function module is desired.

• When link register W to remote I/O station is insufficient.

Moreover, this method can be used for reading and writing data when there is no GX Configurator available.

Refer to Section 7.1.1.for details on the REMFR/REMTO instructions.

Remote I/O station

Remote I/O module

Intelligent

function module

Z.REMFR

Z.REMTO

X1000

LX/LY

Y1018

3) LX/LY

Buffer

memory

X/Y

[Buffer memory]

1) QCPU uses the REMFR instruction to read the contents of the intelligent function module buffer memory.

2) QCPU uses the REMTO instruction to write the contents in the intelligent function module buffer memory to the intelligent function module.

[Input/output]

3) X/Y(LX/LY) is the same as communication with I/O module.

3 - 14 3 - 14

3 SPECIFICATIONS

Remote master station

QCPU

Master module

MELSEC-Q

intervals, using the following devices and setting.

• X/Y (LX/LY) and B/W (LB/LW) devices that are set with common parameters

• Intelligent function module parameters (auto refresh setting) written to the remote I/O module

The difference between this and (a) is that with the automatic refresh settings for the intelligent function module parameters, the automatic refresh destination of the intelligent function module is remote I/O module data register D. Data register D, uses the PLC parameters for the remote I/O module to transmit to link register W among devices.

· · · ·With this method, a sequence program can be created to allow

communication in the same way as with an intelligent function module mounted to the same base units as the CPU module. The analog input value for the analog-digital converter module, current value for the high-speed count module and others are periodically read to suit the digital-analog converter module analog output value being periodically written. In addition, there is no need to revise the intelligent function module parameters even if the network parameters for the remote master station are changed.

Remote I/O station

Remote I/O module

Initial settings

Intelligent

function module

MOV W0 D0

MOV D10 W10

X1000

Y1018

LX/LY

4)5)

6) LX/LY

[Buffer memory]

Buffer

2) memory

X/Y

1) GX Configurator is used to write the initial settings for the intelligent function module and the automatic refresh settings to the remote I/O station remote I/O module.

2) The remote I/O module follows the automatic refresh settings and refreshes the data in the buffer memory of the intelligent function module to the data register D of the remote I/O module.

3) The remote I/O module uses transfer among devices for the PLC parameters written to the host to send data register D to link register W.

3 - 15 3 - 15

3 SPECIFICATIONS

Remote master station

QCPU

Master module

MELSEC-Q

4) Link register W, follows the common parameters set in the remote master station for communication between the remote master station and the remote I/O station.

5) Link register W between the master module and QCPU are refreshed.

[Input/output]

6) X/Y(LX/LY) is the same as communication with I/O module.

(d) The CPU module reads or writes data register D of the remote I/O module

with a link dedicated instruction (READ/WRITE). To data register D, intelligent function module data are refreshed, using intelligent function parameters (auto refresh setting).

· · · ·This method can be used for the following applications.

• During intelligent function module control, when reading and writing data with the sequence program only when data is needed.

• When link register W to remote I/O station is insufficient.

For details on the read/write instructions, refer to the Q corresponding MELSECNET/H network system reference manual (PLC to PLC network).

Remote I/O station

Remote I/O module

Initial settings

Intelligent

function module

JP.READ

Buffer

memory

X/YLX/LY 6) LX/LY

X1000

JP.WRITE

Y1018

2)4)

[Buffer memory]

1) GX Configurator is used to write the initial settings for the intelligent function module and the automatic refresh settings to the remote I/O station remote I/O module.

2) The remote I/O module follows the automatic refresh settings and refreshes the data in the buffer memory of the intelligent function module to the data register D of the remote I/O module.

3) QCPU uses the read/write instructions to read and write to remote I/O module data register D.

[Input/Output]

4) X/Y(LX/LY) is the same as communication with I/O module.

3 - 16 3 - 16

3 SPECIFICATIONS

3.2.2 RAS functions

RAS stands for "Reliability", "Availability" and "Serviceability" and is an automated facility for overall ease of use.

(1) Output reset function for communication errors

To hold output analog values of a digital-analog converter module, set "Error time output mode" to "Hold" and retain the CH

(2) Hardware error time CPU operation mode setting 1

MELSEC-Q

Remote I/O net will set all output of remote I/O stations to off when there is a data link error. It will also set all output of remote I/O stations to off when the data links are operating properly but the remote master station CPU module is down. To hold the output of a remote I/O station even in the case of an error, set "Error time output mode" to "Hold" in the detailed I/O assignment setting in "PLC Parameter" for the remote I/O station. Refer to the GX Developer Operating Manual for more information about setting the PLC parameters. If a data link communication error or communication stop occurs on a remote I/O station, the master station holds the data (X, B, W) received from the remote I/O station immediately before the error.

POINT

This setting specifies whether to stop or continue the operation of a remote I/O station when a hardware error occurs in an intelligent function module on the remote I/O station. The hardware error time CPU operation mode is set in I/O assignment in PLC parameter. For the PLC parameter setting method, refer to GX Developer Operating Manual.

(a) When set to "Stop" (default)

(b) When set to "Continue"

1: The hardware error time CPU operation mode setting is available for the following

Output enable/disable flag status.

Automatic refresh of all intelligent function modules on the remote I/O station is stopped.

Automatic refresh is continued for modules other than the intelligent function module in which a hardware error has occurred.

remote I/O module and GX Developer:

• Remote I/O module: First five digits of serial No. is "10012" or later.

• GX Developer: GX Developer: Version 8.62Q or later

3 - 17 3 - 17

3 SPECIFICATIONS

(3) Automatic return function

1) The remote I/O station No. 2 is disconnected due to a data link error.

Remote

MELSEC-Q

When a station disconnected from a network due to a data link error recovers from the error, the station is automatically reconnected to the network and restarts data link.

(a) When a remote I/O station restarts data link (the "D.LINK" LED is lit.)

The remote I/O station resets all of the modules mounted on the station. If data link is resumed by connecting/disconnecting the link cable, the modules are not reset.

(b) When parameter change or reset of a remote I/O station (including power

cycle) was performed

After parameters of a remote I/O station are changed, if parameter change or reset is performed at the remote master station, or if the remote I/O station is reset (power off and then on, or the reset switch turned on), the modules will be reset when the remote I/O station returns to the system to resume the data link. Consequently, even if the output setting under a CPU error is set to HOLD (retention) in an output module, digital-analog converter module, or temperature control module, output cannot be retained when data link is resumed.

2) The station No. 2 recovers to the normal status and returns to the system.

master

station

(station

No. 0)

Remote I/O

station

(station

No. 1)

Down

Remote I/O

station

(station

No. 2)

Remote

master station

(station

No. 0)

Remote I/O

station

(station

No. 1)

Return

Remote I/O

station

(station

No. 2)

Network No. 1 Network No. 1Return

Remote I/O

station

(station

No. 5)

POINT

Remote I/O

station

(station

No. 4)

Remote I/O

station

(station

No. 3)

Remote I /O

station

(station

No. 5)

Remote I/O

station

(station

No. 4)

Remote I/O

station

(station

No. 3)

There is a limit to the number of faulty stations that can return to the system within one link scan. For details, refer to Section 5.1.4, "Supplementary Settings."

3 - 18 3 - 18

3 SPECIFICATIONS

(4) Loopback function (optical loop system)

MELSEC-Q

In the optical loop system, the transmission path is dual-structured. When an error occurs in a transmission path, the faulty area is disconnected by switching the transmission path from the forward loop to the reverse loop or from the reverse loop to the forward loop, or performing a loopback. The transmission is continued normally between the stations that are still able to perform data communication.

(a) When normal

The data link is performed using the forward loop (or the reverse loop).

Remote master station (station No. 0)

Remote I/O

station

(station No. 1)

Remote I/O

station

(station No. 5)

Reverse loop

Remote I/O

station

(station No. 2)

Remote I/O

station

(station No. 4)

Remote I/O

station

(station No. 3)

Forward loop

Data flow

(b) When abnormal

1) Disconnection in the forward loop (reverse loop) The data link continues using the reverse loop (forward loop).

Remote master station (station No. 0)

Remote I/O

station

(station No. 5)

Remote I/O

station

(station No. 4)

Remote I/O

station

(station No. 1)

Cable disconnection

Remote I/O

station

(station No. 2)

Remote I/O

station

(station No. 3)

2) When some of the stations are down The data link continues excluding the stations that are down. When two or more stations are down, the data link cannot be performed with the station located between the stations that are down.

Down

Remote I/O

station

(station No. 4)

Remote I/O

station

(station No. 3)

Communication

disabled

Remote master station (station No. 0)

Remote I/O

station

(station No. 1)

Loopback

Remote I/O

station

(station No. 5)

Remote I/O

station

(station No. 2)

Down

3 - 19 3 - 19

3 SPECIFICATIONS

MELSEC-Q

1) When the cable is inserted or removed, the line (forward loop/reverse loop) may be switched, but the data link will be performed normally.

2) When the loopback is being executed due to a cable disconnection, both the forward and reverse loops may be recognized as normal depending on the condition of the cable disconnection. Whether the forward/reverse loop is normal/abnormal is determined by the status of "RD" (receive) of the loopback station.

(Example) In the cases described below, the data link continue by dividing the network into two loops: "1M

1: Forward loop normal/reverse loop normal

1R4 : Forward loop normal/reverse loop normal 1R5 : Forward loop normal/reverse loop normal

1R1 : Forward loop "RD" abnormal/reverse loop normal 1R2 : Forward loop normal/reverse loop normal 1R3 : Forward loop normal/reverse loop "RD" abnormal

R-1R5-1R6"

Forward loop normal Reverse loop normal

Forward loop abnormal Reverse loop abnormal

An RD abnormal detection in the forward loop Loopback with the reverse loop

Remote master station

Loopback

Forward

Reverse SDReverse

Reverse RDReverse

Forward

Communication disabled

Communication disabledCommunication disabled

Remote I/O station Remote I/O station

1R1 1R2

Loopback

Forward

Reverse SDReverse

Forward

Reverse RDReverse

Forward

Reverse SDReverse

Reverse RDReverse

Forward

Loopback Loopback

1R5 1R4 1R3

Remote I/O station Remote I/O station Remote I/O station

An RD abnormal detection in the reverse loop Loopback with the forward loop

Communication disabled

3 - 20 3 - 20

3 SPECIFICATIONS

REMARKS

If the network module has become faulty, a loopback may not be made depending on the fault. In that case, the network may stop. Identify the faulty network module in the following method. (1) Check the indicator LEDs (RUN LED off, ERR. LED on) of all network modules

(2) Power off all stations and power them on in order, starting from the remote

Change the network module where the fault has been detected, and confirm that the network is restored to normal.

(5) Station detach function (coaxial bus system)

MELSEC-Q

for a faulty station.

master station. At that time, check up to which station the network operates properly.

In the coaxial bus system, even if the power to a connected station is turned off, the data link continues between other stations which are still able to perform data communication.

(a) When normal

Remote master station (statio n No. 0)

Remote I/O

station

(statio n No. 1)

Remote I/O

station

(station No. 2)

Remote I/O

station

(station No. 3)

Terminating resistor

(b) When abnormal

The data link continues excluding the station that is down.

Down

Remote master station (station No. 0)

Remote I/O

station

(station No. 1)

Remote I/O

station

(station No. 2)

Remote I/O

station

(station No. 3)

POINT

When a cable disconnection occurs, the data link cannot be performed because there will be no terminating resistors.

Remote master station (station No. 0)

Remote I/O

station

(station No. 1)

Remote I/O

station

(station No. 2)

Cable disconnection

Remote I/O

(station No. 3)

station

In addition, even if the cable is normal, the data link cannot be performed if a terminating resistor is detached from an F-type connector.

3 - 21 3 - 21

3 SPECIFICATIONS

(6) Transient transmission enabled even at CPU module error

MELSEC-Q

By using this function, the network module can continue the transient transmission even if an error that stops the CPU module occurs while the system is operating. The description of the error of the corresponding station can be checked from other stations using GX Developer.

OPERATION ERROR

QCPU QJ71

Power supply

LP21

QJ72 LP25

Power supplyPower supply

QJ72 LP25

GX Develope

The following table lists the operations of the cyclic and transient transmissions for each CPU module status.

CPU module status

Battery error Annunciator error ON, etc. (Continue error)

Parameter error Instruction code error, etc. (Stop error)

CPU reset, etc. (MAIN CPU down)

: Accessing the remote master station from GX Developer or like using the transient function

will result in a communication error.

Rank

Minor error Continued Enabled

Medium

error

Major error Stopped Disabled

Cyclic transmission Transient transmission

Stopped Enabled

3 - 22 3 - 22

3 SPECIFICATIONS

(7) Abnormal detection time

MELSEC-Q

By using this function, the "Time," "Abnormal detection network number," and "Abnormal detection station number" can be checked when a transient transmission (READ, WRITE and other instructions) ends abnormally. The time log can be used to identify the network problems and to determine how the network can be improved. For details on the instructions, refer to the Q corresponding MELSECNET/H Network System Reference Manual (PLC to PLC network).

3 - 23 3 - 23

3 SPECIFICATIONS

(8) Diagnostic function

The diagnostic function is used to check the network's line status and the module setting status. The diagnostic function consists mainly of following two types of tests:

• Offline tests

• Online tests

POINT

Execute the online tests when the network module is communicating (T.PASS LED is on). An error occurs if any of the online tests is executed from a station that has been disconnected from the data link.

Item Description

Checks hardware including the send/receive circuits and the

Self-loopback test

Internal self-loopback test

Hardware test Checks hardware inside the network module.

Forward loop/reverse loop

test

Item Description

Loop test Checks the line status.

Setup confirmation test

Station order check test

Communication test

cables of the transmission system of an individual network

module.

Checks hardware including the send/receive circuits of the

transmission system of an individual network module.

Checks the wiring status of the forward and reverse loops in

the status in which all the stations are connected. (Remote

master station only)

Checks for duplicate control stations

and station numbers.

Checks the order of stations connected

in the directions of the forward and

reverse loop.

Checks whether or not the transient

transmission can be performed

normally.

It also checks the routing parameter

settings.

1) Offline tests The network module's hardware and the data link cable wiring can be checked at the system startup by setting the network module or GX Developer to the test mode.

2) Online tests The status of a line and other items can be easily checked with GX Developer. If an error occurs while the system is in operation, the diagnostics listed below can be executed while remaining in the online status.

Optical loop

system

Optical loop

Coaxial bus

system

Coaxial bus

system

(cyclic transmission or

transient transmission)

system

Data link status

Pause Section 4.10.1

Pause Section 4.10.2

Pause Section 4.10.3

Continue Section 4.10.4

MELSEC-Q

Reference

section

Section 4.7.1

Section 4.7.2

Section 4.7.3

Section 4.9.2

Reference

section

3 - 24 3 - 24

3 SPECIFICATIONS

(9) Redundant power supply on a remote I/O station

MELSEC-Q

A redundant power supply can be configured on a remote I/O station by mounting a pair of power supply modules onto the dedicated base unit.

A redundant power supply offers the following advantages.

1) The remote I/O station can continue the operation after either power supply module stops power supply

The remote I/O station with a redundant power supply can continue the operation even if either of the power supply modules stops power supply, as the remaining power supply module supplies power instead.

2) A faulty power supply module can be replaced online (hot-swapping) A faulty power supply module can be replaced online (hot-swapping), as the remote I/O station operates using the remaining power supply module. To take advantages of the redundant power supply, connect separate power supplies to the power supply modules.

If either of the power supply modules stops supplying power, the remote I/O station detects error code 1510 "SINGLE PS DOWN" or 1520 "SINGLE PS ERROR" (moderate error). Errors in the remote I/O station can be confirmed through the PLC diagnostics/system monitor of GX Developer (version 8.17T or later), the ERR. LED of the remote I/O module, and the

3 - 25 3 - 25

ERR contact of the power supply module.

3 SPECIFICATIONS

POINT

For the specifications of Q3 RB/Q6 RB Redundant power supply base unit and Q6

RP redundant power supply module, refer to QCPU User's Manual (Hardware

Design, Maintenance and Inspection).

(a) Modules needed to configure a redundant power supply in a remote I/O

station

To configure a redundant power supply in a remote I/O station, use the modules shown below.

1) Main base unit: Q3

2) Extension base unit: Q6

3) Power supply module: Q6

4) Remote I/O module: QJ72LP25-25, QJ72LP25G, QJ72LP25GE,

(b) Link special register used for configuring a redundant power supply

The remote master station can confirm the status of the power supplies of remote I/O stations using the link special registers listed below. If either of the power supplies stops supplying power, the remote I/O station detects error code 1510 "SINGLE PS DOWN" or 1520 "SINGLE PS

No. Name Description

The CPU status of each station is stored (including the host). Only normal stations out of SW0070 to 0073 are effective.

SW0088

• SW0089

• SW008A

• SW008B

Operation status of each station CPU (2)

0: normal (including the maximum station No. or later and reserved

stations)

1: minor error

SW0088

SW0089

SW008A

SW008B

b15b14b13b12 b4b3b2b1b0

ERROR" (moderate error).

31 30

47 46

63 62

13 5

1: Effective onl y when SB0047 is OFF. When this signal is turned ON (error), the data just before ON are held.

In the table, 1 to 64 indicate station No.

The link special register stores minor errors caused by the factors below in addition to power supply disconnection.

• When an error specified as "Continue" in the "operation mode under error

condition" in the PC RAS settings of parameters (fuse blown or module verification error) occurs

21 20 19 18 17

37 36 35

53 52 51 50 49

MELSEC-Q

RB RB RP

and QJ72BR15 (function version D)

Availability

Control station Normal station

Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial

Remote

master station

Remote I/O

station

3 - 26 3 - 26

3 SPECIFICATIONS

MELSEC-Q

1) If either of the power supply modules fails and it needs to be replaced in a remote I/O station including redundant power supply, replace the other power supply module as well, in order to prevent the potential accidents Also, it is recommended to replace power supply modules five years after the remote I/O station starts to run. For procedures for replacing a redundant power supply module in a normal operating state, refer to Section 8.5.

2) For the Q64RP power supply modules for the redundant power supply system, it is recommended to supply AC power from one of them and to supply power from the other via UPS (Uninterruptible Power Supply). Use the on-line UPS or line interactive UPS, of which voltage distortion is less than 5%. Or use the off-line UPS, Mitsubishi FREQUPS-F Series with serial No. P or later. (Example: FW-F10-0.3K/0.5K). Do not use the off-line UPS other than above.

3) When mounting modules onto the Q38RB or Q68RB redundant power supply base unit, make sure that the sum of 5VDC current consumption of them is within 8.5 A, the rated current value of a power supply module.

4) Connect a NF (non-fuse breaker) to each power supply module so that power supply modules can be shut down separately when either of power supply modules has failed.

5) The output of the ERR contact of the power supply module mounted on a main or extension base unit is turned off when AC/DC power supply is not input or a power supply module error is detected.

6) The output of the ERR contact of the power supply module mounted on a main base unit is turned off when an error that stops the remote I/O module has occurred.

REMARKS

For a remote I/O station including redundant power supply configuration, remote I/O modules of function version C or later can also be used.

3 - 27 3 - 27

However, follow the precautions below.

(1) Precautions on redundant power supply

• When power supply fails, the remote I/O module does not detect an error code. In addition, errors (minor errors) are not noticed to the remote master station.

• When power supply fails, the remote I/O module does not store the error in link special registers SW0088 to 8B.

(2) Precautions on the ERR contact of power supply module

• When an error that stops a remote I/O module operation occurs, the output of the ERR contact is not turned off.

• When the remote I/O module is mounted on the main base unit, the output of the ERR contact is always OFF. When it is mounted on the extension base unit, the output is turned off in the case where AC/DC power supply is not input or the ERR contact is turned off due to detection of a power supply module error.

3 SPECIFICATIONS

(10) Online module change on a remote I/O station

(1) A new module cannot be added and a module cannot be replaced with

(2) Perform online module change after confirming that the system outside the

(3) In order to prevent electric shocks or malfunction, provide a switch or other

(4) In order to confirm the content shown below, it is recommended to perform

(5) Do not install/remove the module to/from the base unit more than 50 times

Input module

I/O combined module

Intelligent function module

MELSEC-Q

Online module change is the function for replacing a Q series module mounted on the main base unit or extension base unit of a remote I/O station while the station is operating. Using this function, a faulty module can be replaced with a module of the same model while the station is operating.

POINT

different model by using the online module change.

programmable controller system will not malfunction.

method to turn off the external power supply of the module to be replaced online.

online module change on an actual system in advance to verify that no error is found in the operations of the modules out of the scope of change.

• There is no error in the method and configuration for disconnecting external devices.

• There is no impact on the module by turning on/off the switches.

after the first use of the product. (IEC 61131-2 compliant) Failure to do so may cause malfunction.

(a) Conditions for online module change on a remote I/O station

Online module change can be performed in the following cases:

1) Modules that can be replaced online (hot-swappable) on remote I/O stations Hot-swappable modules are listed in the following table.

Module type Restriction

No restriction Output module

Analog-digital conversion module

Channel isolated high resolution analog-digital converter module

Channel isolated high resolution analog-digital converter module (With signal conditioning function)

Digital-analog converter module

Channel isolated digital-analog module

Temperature control module

Thermocouple input module Channel isolated thermocouple/micro voltage input module

Channel isolated thermocouple input module

RTD Input Module

Channel isolated temperature input module

Channel isolated pulse input module

Function version “C”

Modules other than above cannot be replaced online. For whether the intelligent function module can be replaced online and replacement procedure, refer to the manual of the intelligent function module used.

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3 SPECIFICATIONS

MELSEC-Q

2) GX Developer versions required for online module change on a remote I/O station To perform online module change, GX Developer Version 8.18U or later is required. In addition, online module change can also be performed from GX Developer via a network.

3) Remote I/O station configuration for online module change Online module change can be performed for Q3 base unit and the modules mounted on the Q6 extension base unit. Online module change cannot be performed for the modules mounted on the following base units:

• Q32SB, Q33SB, or Q35SB slim type main base unit

• Q5

4) Control status of the remote I/O module Online module change can be performed when a stop error has not occurred on the remote I/O module. In addition, online module change can be performed when an error that allows the system to continue operation occurs. However, if either of the following occurs while online module change is being performed, the online module change is suspended.

• The remote I/O module has been reset.

• A stop error has occurred.

5) Number of modules that can be replaced online Only one module can be replaced on a remote I/O station while online module change is performed once. More than one module cannot be replaced simultaneously.

B extension base unit (the modules mounted on a main base unit cannot be replaced online. However, the modules mounted on a Q6

B extension base unit can be replaced.)

B or Q3 RB main

B or Q6 RB

3 - 29 3 - 29

3 SPECIFICATIONS

If an online module change request is issued from other GX Developer to a remote I/O module being replaced online, the message below is displayed. Confirm the message, and select "Yes" or "No."

(b) Restrictions online module change operation

The following operations cannot be performed while online module change is performed.

1) Issue an online module change request from more than one GX Developer to a remote I/O module.

2) Write parameters in the remote I/O module being replaced online.

POINT

MELSEC-Q

• When "Yes" is selected The operation of online module change is switched to GX Developer (2), which issued the request latter. (Operation is continued from the status before switching.)

GX Developer

Continue the online module change

GX Developer

Online module change is being executed

Cancel the execution of the online module change

• When "No" is selected The operation of online module change (GX Developer (2)), which was the latter request, is canceled. (The online module change being executed first (GX Developer (1)) is continued.)

GX Developer

Cancel the online module change

GX Developer

Continue the online module change

3 - 30 3 - 30

3 SPECIFICATIONS

It is recommended to turn off the output (Y) from the output module or I/O combined module in advance.

3) If an error has occurred on the target remote I/O module, the module holds the error even after online module change is completed. Therefore, it is necessary to clear the error by clearing the error using SM50 and SD50 on the programmable controller CPUs of the remote I/O station and master station. Reset the error in the order below: a) Remote I/O station b) Programmable controller CPU of the master station

4) When the REMTO/REMFR instruction is executed for an intelligent function module under online module change, the system turns to the waiting for execution status without detecting an error. The instruction is resumed after the online module change has finished. The completion flag of the instruction is not turned on in the waiting for execution status.

This section describes the procedure of the online module change of the I/O module. For the procedure of the online module change of the intelligent function module, refer to the manual of the intelligent function module used.

POINT

1) Select "Diagnostics" enter the "Online module change" mode.

"Online Module Change" on GX Developer to

MELSEC-Q

3 - 31 3 - 31

3 SPECIFICATIONS

MELSEC-Q

2) Double-click the module to be replaced online to display the Online module change screen. (The table below indicates the communication status of the module to be replaced online when the screen below is displayed.)

Target modules and items Execute/not execute

Input module refreshing Execute

Output module refreshing Execute

I/O combined module

Input refreshing Execute

Output refreshing Execute

Intelligent function module

Input refreshing Execute

Output refreshing Execute

Intelligent module automatic refreshing Execute

Buffer memory batch monitoring Execute

3) Click the "Execution" button to enable the online module change. (The table below indicates the communication status of the module to be replaced online when the screen below is displayed.)

Target modules and items Execute/not execute

Input module refreshing

Output module refreshing Not execute

I/O combined module

Input refreshing

Output refreshing Not execute

Intelligent function module

Input refreshing Not execute

Output refreshing Not execute

Intelligent module automatic refreshing No processing

Buffer memory batch monitoring Communication error

Not execute (data are held)

4) Disconnect the connection of the module (I/O signal) with the external device by the switch and so on.

5) Turn off the switch of the external power supply for modules to shut off power supply.

6) Remove the terminal block or connector from the module.

7) Remove the module.

8) Mount a new module in the same slot.

9) Mount the terminal block or connector to the module.

10) Turn on the switch of the external power supply for modules to resume power supply.

3 - 32 3 - 32

3 SPECIFICATIONS

MELSEC-Q

11) Connect between the external device and module (I/O signal) by the switch and so on.

12) Mount the module, and then click the "Execution" button. (The table below lists the communication status of the new module when the screen below is displayed.)

Target modules and items Execute/not execute

Input module refreshing

Output module refreshing Not execute

I/O combined module

Input refreshing

Output refreshing Not execute

Intelligent function module

Input refreshing Execute

Output refreshing Execute

Intelligent module automatic refreshing No processing

Buffer memory batch monitoring Execute

: If the initial settings of the intelligent function module have been

made by GX Configurator, the setting data are written in to the intelligent function module.

Not execute (data are retained)

13) Click the "Execution" button to start control.

14) The "Online module change completed." screen is displayed. (The table below lists the communication status of the new module when the screen below is displayed.)

Applicable modules and items Execute/not execute

Input module refreshing Execute

Output module refreshing Execute

I/O combined module

Input refreshing Execute

Output refreshing Execute

Intelligent function module

Input refreshing Execute

Output refreshing Execute

Intelligent module automatic refreshing Execute

Buffer memory batch monitoring Execute

3 - 33 3 - 33

3 SPECIFICATIONS

3.3 Link Data Send/Receive Processing Time Specifications

The following introduces the method of calculating link data send/receive and transmission delay time in the remote I/O network.

3.3.1 Link data send/receive processing

(1) Summary of send/receive processing

Cyclic transmission of the remote I/O network communicates by network module

LX/LY/LB/LW.

(a) For input module

The following is an example of CPU module side output (Y).

1) Remote master station Y1000 is on.

2) Y1000 data is stored in the master module refresh data storage area (LY) by link refresh.

3) The Y1000 data in the refresh data storage area (LY) is stored as Y0 in the link data storage area (LY) according to the common parameters.

4) The Y0 data in the link data storage area (LY) is stored in the link data storage area (LY) for the remote I/O module by link scan.

5) The Y0 data in link data storage area (Y) is stored in refresh data storage area (LY).

6) The Y0 data is output from the output module of the remote I/O station by the I/O refresh operation of the remote I/O module.

MELSEC-Q

Sequence scan

Device memory storage area

1: Set by network refresh parameters. 2: Set by remote master station common parameters.

Y1000

Remote master station Remote I/O station

QCPU Master module Remote I/O module Output module

Link

refresh

Refresh data storage area 2

Link data storage area 2

Link

scan

LY LY

Link data storage area 2

Refresh data storage area 2

I/O refresh

3 - 34 3 - 34

3 SPECIFICATIONS

MELSEC-Q

(b) For intelligent function module

The following provides an example of how the link device (W) on the CPU module side is sent to an intelligent function module.

1) Data is sent to the remote master station W0.

2) W0 data is stored in the master module refresh data storage area (LW) by link refresh.

3) The W0 data in the refresh data storage area (LW) is stored as W0 in the link data storage area (LW) according to the common parameters.

4) The W0 data in the link data storage area (LW) is stored in the link data storage area (LW) for the remote I/O module by link scan.

5) The W0 data in link data storage area (LW) is stored in refresh data storage area (LW).

6) The W0 data is written to the remote I/O station intelligent function module buffer memory address 0 by the automatic refresh settings of the intelligent function module parameters.

MOV D0 W0

Remote master station Remote I/O station

QCPU

Sequence scan

Device memory storage area

1: Set by network refresh parameters. 2: Set by remote master station common parameters. 3: Set by intelligent function module parameter automatic refresh settings.

Link

refresh

Master module Remote I/O module

LW LW LW LW(W)W

Refresh data storage area 2

3) 5)

Link data storage area 2

Link

scan

Link data storage area 2

Refresh data storage area 2

function module

Automatic refresh 3

Intelligent

Buffer

memory

Address 0

3 - 35 3 - 35

3 SPECIFICATIONS

(2) Link refresh, link scan, I/O refresh and automatic refresh

Remote master station sequence scan

Remote master station master module

POINT

If latch device (listed in "Device set in PLC side" in the following table) data is cleared to "0" using a sequence program when the CPU module is powered off and on or is exited from the RESET status, the latch data may be output depending on the timing of link scan and link refresh. To prevent this, perform the operation described in "How to disable the link refresh" in the following table.

Latch relay (L)

File register (R, ZR)

Extended data register (D)

(Universal model QCPU only)

Devices within the latch range

*1: For details on the setting of device initial value, refer to the user's manual

MELSEC-Q

(a) Link refresh of the remote master station

Link refresh of the remote master station is performed in the END processing of the CPU module.

END0

Link refresh Link refresh Link refresh

Device set in PLC side How to disable the link refresh

(Function Explanation, Program Fundamentals) for the CPU module used.

END0 END0 END0

Clear the value of the device to 0 by using

device initial value

Clear all latch range settings. Extended link register (W)

(*1)

3 - 36 3 - 36

3 SPECIFICATIONS

POINT

To set the END asynchronization, use the following master module and GX Developer.

• Master module: First five digits of serial No. are "09012" or later.

• GX Developer: GX Developer Version 8.45X or later

Link scan

MELSEC-Q

(b) Link scan

Link scans can be performed synchronously with sequence scans of the CPU module (END synchronization) or asynchronously with them (END asynchronization). Select END synchronization or END asynchronization, referring to the following.

1) END synchronization (Default) The transmission delay time for output can be reduced. When a sequence scan takes much longer than a link scan, however, the transmission delay time for input is increased. (Refer to Section

3.3.2.)

2) END asynchronization When a sequence scan takes much longer than a link scan, the transmission delay time for input can be reduced. However, the transmission delay time for output will be increased. (Refer to Section 3.3.2.)

These refreshes are performed in synchronization with link scans.

Master module

I/O refresh

I/O module

Automatic refresh

Intelligent function module

I/O refresh I/O refresh

Automatic refresh Automatic refresh

3 - 37 3 - 37

3 SPECIFICATIONS

(3) Link data when communication error station/communication stop

Remote master station Remote I/O station

MELSEC-Q

station has occurred

If a data link communication error or communication stop occurs on a remote I/O station, the master station holds the data (X, B, W) received from the remote I/O station immediately before the error. The remote I/O station output (Y) is set to all points off. (A communication stop station is a station that has had its cyclic transmission stopped by peripheral equipment.)

· · · · Location of storage

All points off

3 - 38 3 - 38

3 SPECIFICATIONS

(4) SB/SW when a communication error station/communication stop

MELSEC-Q

station occurs on the network

The status of whether there are any communication error/communication stop stations on the network can be checked with the link special relay/register (SB/SW). Use them as interlocks for programs.

Link special relays and registers

Link special

relay/register

SB0047 Shows the baton pass execution status of the host.

SB0049 Shows the data link status of the host. Normal Abnormal

Shows the baton pass execution status of all

SB0070

SW0070 to

0073

SB0074

SW0074 to

0077

stations (including the host). However, it only shows

the status for the number of stations set with

parameters.

Shows the baton pass execution status of each

station.

Each bit corresponds to the status of each station.

Shows the cyclic transmission status of all stations

(including the host). However, it only shows the

status for the number of stations set with

parameters.

Shows the cyclic transmission status of each station.

Each bit corresponds to the status of each station.

Description

Signal status

Off On

The baton

pass is being

executed

The baton

pass is being

executed on

all stations

The baton

pass is being

executed

All stations

normal

Normal Abnormal

The baton

pass is

stopped

Occurrence

communicati-

on stop

station

The baton

pass is

stopped

Occurrence

of abnormal

station

3 - 39 3 - 39

3 SPECIFICATIONS

3.3.2 Transmission delay time

The names of items (1), (2) on the following pages indicate those between the following stations.

Remote master station

Multiplexed remote master station

DMR

Multiplexed remote sub-master station

(2)

DSM

MELSEC-Q

(1)

Remote I/O station

(1)

Remote I/O station

Item Name

(1) Remote master station remote I/O station

(2) Multiplexed remote master station multiplexed remote sub-master station

3 - 40 3 - 40

3 SPECIFICATIONS

MELSEC-Q

(1) Remote master station remote I/O station

(a) Cyclic transmission (X/Y/W periodic communication)

Transmission delay time of X/Y/W is the sum of the following.

• Remote master station scan time (Except for the link refreshing time)

• Remote master station link refresh time

• Link scan time

• Remote I/O station I/O refresh (X/Y) or automatic refresh (W) Calculate the sum as shown below: (Note that for X/Y communication time, it is necessary to add the I/O

[X transmission delay time (T

module response delay time to the calculation)

1) In the case of END synchronization

DX)] (END synchronization)

[Remote master station scan time (Sm) > link scan time (LS)]

DX = (Sm + m) 2 + Sm + TRIOR [ms]

Remote master station



The remote master station confirms the X attached near the end step



Link scan time

Remote I/O station

LS LS LS LS

RION

0: 0 step E: END step

[Remote master station scan time (Sm) < link scan time (LS)]

DX = (Sm + m) round up [LS/(Sm + m)] 2 + Sm + TRIOR [ms]

Remote master station

Link scan time

Remote I/O station



RION

Sm m LS T

RIOR

round up



The remote master station confirms the X attached near the end step



LS LS



0: 0 step E: END step



: Remote master station scan time : Remote master station link refresh time : Link scan time : I/O refresh time : Round up the decimal point of the result operation [LS/(Sm + m)]

POINT

The same formula is used to calculate the transmission delay time (TDX) independently of the Block send/receive data assurance per station setting.

3 - 41 3 - 41

3 SPECIFICATIONS

MELSEC-Q

[Y transmission delay time (T

DY)] (END synchronization)

[Remote master station scan time (Sm) > link scan time (LS)] T

DY = (Sm + m)

The remote master station sets Y to on near 0 step.



Remote master station

LS + TRIOR [ms]



0: 0 step E: END step



Link scan time

Remote I/O station

LS LS LS

TRI

[Remote master station scan time (Sm) < link scan time (LS)] T

Remote master station

Link scan time

Remote I/O station

DY = (Sm + m) round up [LS/(Sm + m)] + LS + TRIOR [ms]

The remote master station sets Y to on near 0 step.

m

m LS T

RIOR

round up

: Remote master station scan time : Remote master station link refresh time : Link scan time : I/O refresh time : Round up the decimal point of the result operation [LS/(Sm + m)]

POINT

When the "Block send/receive data assurance per station" box is checked, the transmission delay time (T

DY) is calculated as follows:

• [Remote master station scan time (Sm) > Link scan time (LS)] T

DY = (Sm + m) + LS + TRIOR [ms]

• [Remote master station scan time (Sm) < Link scan time (LS)] T

DY = (Sm + m) round up[LS/(Sm + m)] 2 + LS + TRIOR [ms]

m

0: 0 step E: END step

m

LSLS

m

3 - 42 3 - 42

3 SPECIFICATIONS

MELSEC-Q

[W input transmission delay time (T

DB1)] (END synchronization)

[Remote master station scan time (Sm) > link scan time (LS)]

DB1 = (Sm + m) 2

Sm + TRBF [ms]

MOV W0 D0

Remote master station

Link scan time

Remote I/O station

Intelligent function

module

m

LS LS LS LS

RBF

Buffer memory

m

TDB1

m

0: 0 step E: END step

m

[Remote master station scan time (Sm) < link scan time (LS)] T

Remote master station

Link scan time

Remote I/O station

DB1 = (Sm + m) round up [LS/(Sm + m)] 2 + Sm + TRBF [ms]

MOV W0 D0

m

RBF

m

0: 0 step E: END step

m

Intelligent function

module

Buffer memory

TDB1

m LS T

RBF

round up

: Remote master station scan time : Remote master station link refresh time : Link scan time : Intelligent function module buffer memory refresh time : Round up the decimal point of the result operation [LS/(Sm + m)]

POINT

The same formula is used to calculate the transmission delay time (TDB1) independently of the Block send/receive data assurance per station setting.

3 - 43 3 - 43

3 SPECIFICATIONS

MELSEC-Q

[W output transmission delay time (T

DB2)] (END synchronization)

[Remote master station scan time (Sm) > link scan time (LS)]

DB2 = (Sm + m)

MOV D100 W100

Remote master station

m

LS + TRBF [ms]

m

0: 0 step E: END step

m

Link scan time

Remote I/O station

Intelligent function

module

LS LS LS LS

Buffer memory

TDB2

[Remote master station scan time (Sm) < link scan time (LS)] T

MOV D100 W100

Remote master station

Link scan time

Remote I/O station

Intelligent function

module

DB2 = (Sm + m) round up [LS/(Sm + m)] + LS + TRBF [ms]

m

TDB2

m

Buffer memory

m LS T

RBF

round up

POINT

When the "Block send/receive data assurance per station" box is checked, the transmission delay time (T

DB2) is calculated as follows:

• [Remote master station scan time (Sm) > Link scan time (LS)] T

DB2 = (Sm + m) + LS + TRBF [ms]

• [Remote master station scan time (Sm) < Link scan time (LS)] T

DB2 = (Sm + m) x round up[LS/(Sm + m)] x 2 + LS + TRBF [ms]

RBF

LS LS

m

RBF

0: 0 step E: END step

m

3 - 44 3 - 44

Mitsubishi Electronics QJ71LP21, QJ71LP21-25, QJ71LP21GE, QJ71LP21S-25, QJ72LP25-25 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

 SAFETY PRECAUTIONS 

 CONDITIONS OF USE FOR THE PRODUCT 

REVISIONS

INTRODUCTION

CONTENTS

MANUALS

COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES

GENERIC TERMS AND ABBREVIATIONS

DEFINITIONS OF TERMINOLOGY

PACKING LIST

1 OVERVIEW

1.1 Overview

1.2 Features

1.3 Abbreviations Used in the Text, Tables and Diagrams of This Manual

1.4 Functions Added/Changed with Upgrade to Function Version D

2 SYSTEM CONFIGURATION

2.1 Single Remote I/O Networks

2.1.1 Configuration

2.1.2 Setting items

2.1.3 Available device ranges

2.2 Multiple Remote I/O Network (Process CPU)

2.2.1 Configuration

2.2.2 Setting items

2.2.3 Available device ranges

2.3 Multiplexed Remote I/O Network for Redundant System (Redundant CPU)

2.3.1 Configuration

2.3.2 Setting items

2.3.3 Available device ranges

2.4 Multiple Remote I/O Network

2.4.1 Configuration

2.4.2 Setting items

2.4.3 Available device ranges

2.5 Applicable Systems

2.5.1 Applicable systems for remote master stations

2.5.2 Applicable systems for remote I/O stations

2.6 When Using a Multiple CPU System

2.7 Checking Function Version and Serial No.

3 SPECIFICATIONS

3.1 Performance Specifications

3.1.1 Optical loop system performance specifications

3.1.2 Coaxial cable system performance specifications

3.1.3 Optical fiber cable specifications

3.1.4 Coaxial cable specifications

3.2 Function Specifications

3.2.1 Cyclic transmission function (periodic communication)

3.2.2 RAS functions

3.3 Link Data Send/Receive Processing Time Specifications

3.3.1 Link data send/receive processing

3.3.2 Transmission delay time