Mitsubishi Electric MELSEC Q Series User manual

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

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• SAFETY PRECAUTIONS •
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full
attention to safety to handle the product correctly.
The precautions given in this manual are concerned with this product only. For the safety precautions of
the programmable controller system, refer to the user’s manual for the CPU module used.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
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.
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
[Design Precautions]
WARNING
• 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".
!
WARNING
CAUTION

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[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 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.
!
!
!

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

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[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 fixing 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 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.
!
!
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• 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.

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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
Section 2.3 Section 2.4, Section 2.4 Section 2.5
Addition
Section 7.10
Nov., 2002 SH (NA) -080124-D 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
Apr., 2003 SH (NA) -080124-E 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 - 7 A - 7
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.
Section 2.4 Section 2.5, Section 2.5 Section 2.6
Mar., 2005 SH (NA) -080124-G Correction
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
Sep., 2005 SH (NA) -080124-H 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
May, 2006 SH (NA) -080124-I 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
Sep., 2006 SH (NA) -080124-J Correction
Section 2.1.2, 2.2.2, 2.3.2, 2.4.2, 4.2.1, 4.2.2, 8.3.2

A - 8 A - 8
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 Section 8.2.9, Section 8.4 Section 8.6
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 Section 6.5 to 6.6, Appendix 7 Appendix 6
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