Mitsubishi Electric MELSEC iQ-R Series Instruction sheet

MELSEC iQ-R
Module Configuration Manual

1
SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using MELSEC iQ-R series programmable controllers, please read the manuals for the product and the relevant
manuals introduced in those manuals carefully, and pay full attention to safety to handle the product correctly.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to serious
consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future reference.
WARNING Indicates that incorrect handling may cause hazardous conditions, resulting in
death or severe injury.
CAUTION Indicates that incorrect handling may cause hazardous conditions, resulting in
minor or moderate injury or property damage.

2
[Design Precautions]
WARNING
●Configure safety circuits external to the programmable controller to ensure that the entire system
operates safely even when a fault occurs in the external power supply or the programmable controller.
Failure to do so may result in an accident due to an incorrect output or malfunction.
(1) Emergency stop circuits, protection circuits, and protective interlock circuits for conflicting
operations (such as forward/reverse rotations or upper/lower limit positioning) must be configured
external to the programmable controller.
(2) When the programmable controller detects an abnormal condition, it stops the operation and all
outputs are:
• Turned off if the overcurrent or overvoltage protection of the power supply module is activated.
• Held or turned off according to the parameter setting if the self-diagnostic function of the CPU
module detects an error such as a watchdog timer error.
(3) All outputs may be turned on if an error occurs in a part, such as an I/O control part, where the
CPU module cannot detect any error. To ensure safety operation in such a case, provide a safety
mechanism or a fail-safe circuit external to the programmable controller. For a fail-safe circuit
example, refer to Page 187 General Safety Requirements in this manual.
(4) Outputs may remain on or off due to a failure of a component such as a relay and transistor in an
output circuit. Configure an external circuit for monitoring output signals that could cause a
serious accident.
●In an output circuit, when a load current exceeding the rated current or an overcurrent caused by a
load short-circuit flows for a long time, it may cause smoke and fire. To prevent this, configure an
external safety circuit, such as a fuse.
●Configure a circuit so that the programmable controller is turned on first and then the external power
supply. If the external power supply is turned on first, an accident may occur due to an incorrect output
or malfunction.
●For the operating status of each station after a communication failure, refer to manuals relevant to the
network. Incorrect output or malfunction due to a communication failure may result in an accident.
●When connecting an external device with a CPU module or intelligent function module to modify data
of a running programmable controller, configure an interlock circuit in the program to ensure that the
entire system will always operate safely. For other forms of control (such as program modification,
parameter change, forced output, or operating status change) of a running programmable controller,
read the relevant manuals carefully and ensure that the operation is safe before proceeding. Improper
operation may damage machines or cause accidents.

3
[Design Precautions]
WARNING
●Especially, when a remote programmable controller is controlled by an external device, immediate
action cannot be taken if a problem occurs in the programmable controller due to a communication
failure. To prevent this, configure an interlock circuit in the program, and determine corrective actions
to be taken between the external device and CPU module in case of a communication failure.
●Do not write any data to the "system area" and "write-protect area" of the buffer memory in the
module. Also, do not use any "use prohibited" signals as an output signal from the CPU module to
each module. Doing so may cause malfunction of the programmable controller system. For the
"system area", "write-protect area", and the "use prohibited" signals, refer to the user's manual for the
module used.
●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. Incorrect output or malfunction due to a
communication failure may result in an accident.
●To maintain the safety of the programmable controller system against unauthorized access from
external devices via the network, take appropriate measures. To maintain the safety against
unauthorized access via the Internet, take measures such as installing a firewall.
[Precautions for using digital-analog converter modules and high speed digital-analog
converter modules]
●Analog outputs may remain on due to a failure of the module. Configure an external interlock circuit
for output signals that could cause a serious accident.

4
[Design Precautions]
WARNING
[Precautions for using high-speed counter modules and flexible high-speed I/O control
modules]
●Outputs may remain on or off due to a failure of a transistor for external output. Configure an external
circuit for monitoring output signals that could cause a serious accident.
[Precautions for using flexible high-speed I/O control modules]
●When changing data and operating status of the running module from an external device such as a
personal computer connected, configure an interlock circuit external to the programmable controller to
ensure that the entire system always operates safely. In addition, before performing online operations,
determine corrective actions to be taken between the external device and the module in case of a
communication failure due to poor contact of cables.
[Precautions for using positioning modules and Simple Motion modules]
●Configure safety circuits external to the programmable controller to ensure that the entire system
operates safely even when a fault occurs in the external power supply or the programmable controller.
Failure to do so may result in an accident due to an incorrect output or malfunction.
(1) Machine OPR (Original Point Return) is controlled by two kinds of data: an OPR direction and an
OPR speed. Deceleration starts when the near-point dog signal turns on. If an incorrect OPR
direction is set, motion control may continue without deceleration. To prevent machine damage
caused by this, configure an interlock circuit external to the programmable controller.
(2) When the positioning module detects an error, the motion slows down and stops or the motion
suddenly stops, depending on the stop group setting in parameter. Set the parameters to meet the
specifications of the positioning control system used. In addition, set the OPR parameters and
positioning data within the specified setting range.
(3) Outputs may remain on or off, or become undefined due to a failure of a component such as an
insulation element and transistor in an output circuit, where the positioning module cannot detect
any error. In a system where the incorrect outputs could cause a serious accident, configure an
external circuit for monitoring output signals.
●An absolute position restoration by the positioning module may turn off the servo-on signal (servo off)
for approximately 60ms + scan time, and the motor may run unexpectedly. If this causes a problem,
provide an electromagnetic brake to lock the motor during absolute position restoration.

5
[Design Precautions]
WARNING
[Precautions for using Motion CPU modules and Simple Motion modules]
●Configure safety circuits external to the programmable controller to ensure that the entire system
operates safely even when a fault occurs in the external power supply or the programmable controller.
Failure to do so may result in an accident due to an incorrect output or malfunction.
●If safety standards (ex., robot safety rules, etc.,) apply to the system using the module, servo amplifier
and servo motor, make sure that the safety standards are satisfied.
●Construct a safety circuit externally of the module or servo amplifier if the abnormal operation of the
module or servo amplifier differs from the safety directive operation in the system.
●Do not remove the SSCNETcable while turning on the control circuit power supply of modules and
servo amplifier. Do not see directly the light generated from SSCNETconnector of the module or
servo amplifier and the end of SSCNETcable. When the light gets into eyes, you may feel
something wrong with eyes. (The light source of SSCNETcomplies with class1 defined in JISC6802
or IEC60825-1.)
[Precautions for using CC-Link IE Controller Network (when optical fiber cables are used)]
●The optical transmitter and receiver of the CC-Link IE Controller Network module use laser diodes
(class 1 in accordance with IEC 60825-1). Do not look directly at a laser beam. Doing so may harm
your eyes.
[Precautions for using CC-Link system master/local modules]
●To set a refresh device in the module parameters, select the device Y for the remote output (RY)
refresh device. If a device other than Y, such as M and L, is selected, the CPU module holds the
device status even after its status is changed to STOP. For how to stop data link, refer to the MELSEC
iQ-R CC-Link System Master/Local Module User's Manual (Application).
[Precautions for using C Controller modules]
●In the settings of refresh parameters, link output (LY) refresh devices and remote output (RY) refresh
devices do not allow the specification of Y. Thus, the CPU module holds the device status even after
its status is changed to STOP.
[Precautions for using redundant function modules]
●The optical transmitter and receiver of the redundant function module use laser diodes (class 1 in
accordance with IEC 60825-1). Do not look directly at a laser beam. Doing so may harm your eyes.
[Precautions for using products in a Class , Division 2 environment]
●Products with the Cl., DIV.2 mark on the rating plate are suitable for use in Class , Division 2,
Groups A, B, C and D hazardous locations, or nonhazardous locations only.
This mark indicates that the product is certified for use in the Class , Division 2 environment where
flammable gases, vapors, or liquids exist under abnormal conditions. When using the products in
the Class , Division 2 environment, observe the following to reduce the risk of explosion.
• This device is open-type and is to be installed in an enclosure suitable for the environment and
require a tool or key to open.
• Warning - Explosion Hazard - Substitution of any component may impair suitability for Class ,
Division 2.
• Warning - Explosion Hazard - Do not disconnect equipment while the circuit is live or unless the
area is known to be free of ignitable concentrations.
• Do not open the cover of the CPU module and remove the battery unless the area is known to
be nonhazardous.
• All MELSEC iQ-R modules (except base modules) are to be connected to a base module only.

6
[Design Precautions]
WARNING
[Precautions for using Safety CPUs]
●When the safety programmable controller detects a fault in the external power supply or itself, it turns
off all outputs in the safety system. Configure an external circuit to ensure that the power source of a
hazard is shut off by turning off the outputs. Failure to do so may result in an accident.
●Configure short current protection circuits for safety relays and protection circuits, such as a fuse and
breaker, external to the safety programmable controller.
●When a load current exceeding the rated current or an overcurrent caused by a load short-circuit
flows, the CC-Link IE Field Network remote I/O module (with safety functions) detects an error and
turns off all outputs. Note that if the overcurrent state continues for a long time, it may cause smoke
and fire. To prevent this, configure an external safety circuit, such as a fuse.
●When changing data and operating status, and modifying program of the running safety
programmable controller from an external device such as a personal computer connected to the
Safety CPU, configure an interlock circuit in the program or external to the safety programmable
controller to ensure that the entire system always operates safely. In addition, before performing
online operations, determine corrective actions to be taken between the external device and Safety
CPU in case of a communication failure due to poor contact of cables.
●Do not use any "use prohibited" signals as a remote I/O signal since they are used by the system. Do
not write any data to the "use prohibited" areas in the remote register. For the "use prohibited" signals,
refer to the MELSEC iQ-R CC-Link IE Field Network User's Manual (Application). Do not turn on or off
these signals on a program since normal operations cannot be guaranteed. Doing so may cause
malfunction of the programmable controller system.
●When the CC-Link IE Field Network remote I/O module (with safety functions) detects a CC-Link IE
Field Network error, it turns off outputs. However, the program does not automatically turn off outputs.
Create a program that turns off outputs when a CC-Link IE Field Network error is detected. If CC-Link
IE Field Network is restored with outputs on, connected machines may suddenly operate, resulting in
an accident.
●Create an interlock circuit which uses reset buttons so that the system does not restart automatically
after executing safety functions and turning off outputs.
●In the case of a communication failure in the network, the status of the error station will be as follows:
(1) All inputs from remote I/O stations are turned off.
(2) All outputs from remote I/O stations are turned off.
Check the communication status information and configure an interlock circuit in the 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.
●Outputs may remain on or off due to a failure of the CC-Link IE Field Network remote I/O module (with
safety functions). Configure an external circuit for monitoring output signals that could cause a serious
accident.

7
[Design Precautions]
WARNING
[Precautions for using remote head modules]
●Configure safety circuits external to the remote head module to ensure that the entire system
operates safely even when a fault occurs in the external power supply or the remote head module.
Failure to do so may result in an accident due to an incorrect output or malfunction.
(1) Emergency stop circuits, protection circuits, and protective interlock circuits for conflicting
operations (such as forward/reverse rotations or upper/lower limit positioning) must be configured
external to the remote head module.
(2) When the remote head module detects an abnormal condition, outputs are:
• Held or turned off according to the parameter setting of each module mounted on the main
base unit or extension base unit if the self-diagnostic function of the remote head module
detects an error such as a watchdog timer error.
(3) All outputs may be turned on if an error occurs in a part, such as an I/O control part, where the
remote head module cannot detect any error. To ensure safety operation in such a case, provide a
safety mechanism or a fail-safe circuit external to the remote head module. For a fail-safe circuit
example, refer to Page 187 General Safety Requirements in this manual.
●Configure a circuit so that the remote head module is turned on first and then the external power
supply. If the external power supply is turned on first, an accident may occur due to an incorrect output
or malfunction.
●When connecting an external device with a remote head module to modify data of a running remote
head module, configure an interlock circuit in the program of the master station to ensure that the
entire system will always operate safely. For other forms of control (such as parameter change, forced
output, or operating status change) of a running remote head module, read the relevant manuals
carefully and ensure that the operation is safe before proceeding. Improper operation may damage
machines or cause accidents.
●Especially, when a remote head module is remotely controlled by an external device, immediate
action cannot be taken if a problem occurs in the remote head module due to a communication failure.
To prevent this, configure an interlock circuit in the program of the master station, and determine
corrective actions to be taken between the external device and remote head module in case of a
communication failure.
●Do not write any data to the buffer memory in the remote head module. Doing so may cause
malfunction of the programmable controller system.
●Do not write any data from the remote head module to the "system area" and "write-protect area" of
the buffer memory in each module. Also, do not use any "use prohibited" signals as an output signal
from the remote head module to each module. Doing so may cause malfunction of the programmable
controller system. For the "system area", "write-protect area", and the "use prohibited" signals, refer to
the user's manual for the module used.
[Precautions for using AnyWireASLINK master modules]
●An AnyWireASLINK system has no control function for ensuring safety.

8
[Design Precautions]
CAUTION
●Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 100mm or more between them. Failure to do so may result in malfunction
due to noise.
●During control of an inductive load such as a lamp, heater, or solenoid valve, a large current
(approximately ten times greater than normal) may flow when the output is turned from off to on.
Therefore, use a module that has a sufficient current rating.
●After the CPU module is powered on or is reset, the time taken to enter the RUN status varies
depending on the system configuration, parameter settings, and/or program size. Design circuits so
that the entire system will always operate safely, regardless of the time.
●Do not power off the programmable controller or reset the CPU module while the settings are being
written. Doing so will make the data in the flash ROM and SD memory card undefined. The values
need to be set in the buffer memory and written to the flash ROM and SD memory card again. Doing
so also may cause malfunction or failure of the module.
●When changing the operating status of the CPU module from external devices (such as the remote
RUN/STOP functions), select "Do Not Open by Program" for "Opening Method" of "Module
Parameter". If "Open by Program" is selected, an execution of the remote STOP function causes the
communication line to close. Consequently, the CPU module cannot reopen the line, and external
devices cannot execute the remote RUN function.
[Precautions for using digital-analog converter modules and high speed digital-analog
converter modules]
●Power on or off the external power supply while the programmable controller is on. Failure to do so
may result in incorrect output or malfunction.
●At on/off of the power or external power supply, or at the output range switching, a voltage may occur
or a current may flow between output terminals for a moment. In this case, start the control after
analog outputs become stable.
[Precautions for using high-speed counter modules and flexible high-speed I/O control
modules]
●Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 150mm or more between them. Failure to do so may result in malfunction
due to noise.
[Precautions for using Safety CPUs]
●When selecting external devices to be connected to the CC-Link IE Field Network remote I/O module
(with safety functions), consider the maximum inrush current described in the CC-Link IE Field
Network Remote I/O Module (With Safety Functions) User's Manual. Exceeding the maximum inrush
current may cause malfunction or failure of the module.
[Precautions for using remote head modules]
●After the remote head module is powered on or is reset, the time taken to enter the RUN status varies
depending on the system configuration and/or parameter settings. Design circuits so that the entire
system will always operate safely, regardless of the time.
●Do not power off or reset the remote head module while the parameters are being written. Doing so
may cause malfunction or failure of the module.

9
[Installation Precautions]
[Installation Precautions]
WARNING
●Shut off the external power supply (all phases) used in the system before mounting or removing the
module. Failure to do so may result in electric shock or cause the module to fail or malfunction.
[Precautions for using C Controller modules]
●When mounting a C Controller module, make sure to attach the connector cover included in a base
unit to the module connector of the second slot to prevent entrance of foreign material such as dust.
CAUTION
●Use the programmable controller in an environment that meets Page 84 General Specifications in this
manual. Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of
the product.
●To mount a module, place the concave part(s) located at the bottom onto the guide(s) of the base unit,
and push in the module until the hook(s) located at the top snaps into place. Incorrect interconnection
may cause malfunction, failure, or drop of the module.
●To mount a module with no module fixing hook, place the concave part(s) located at the bottom onto
the guide(s) of the base unit, push in the module, and fix it with screw(s). Incorrect interconnection
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.
●When using an extension cable, connect it to the extension cable connector of the base unit securely.
Check the connection for looseness. Poor contact may cause malfunction.
●When using an SD memory card, fully insert it into the SD memory card slot. Check that it is inserted
completely. Poor contact may cause malfunction.
●Securely insert an extended SRAM cassette into the cassette connector of the CPU module. After
insertion, close the cassette cover and check that the cassette is inserted completely. Poor contact
may cause malfunction.
●Do not directly touch any conductive parts and electronic components of the module, SD memory
card, extended SRAM cassette, or connector. Doing so can cause malfunction or failure of the
module.
[Precautions for using Safety CPUs]
●Use the CC-Link IE Field Network remote I/O module (with safety functions) and CC-Link IE Field
Network remote I/O module in an environment that meets the general specifications in the
corresponding manuals (CC-Link IE Field Network Remote I/O Module (With Safety Functions) User's
Manual and CC-Link IE Field Network Remote I/O Module User's Manual). Failure to do so may result
in electric shock, fire, malfunction, or damage to or deterioration of the product.
●Securely fix the CC-Link IE Field Network remote I/O module (with safety functions) and CC-Link IE
Field Network remote I/O module with a DIN rail or module fixing screws. 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.

10
[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 cause the module to fail or malfunction.
●After installation and wiring, attach a blank cover module (RG60) to each empty slot and an included
extension connector protective cover to the unused extension cable connector before powering on the
system for operation. Failure to do so may result in electric shock.
[Precautions for using flexible high-speed I/O control modules]
●When connecting a differential output terminal to a differential receiver of a drive unit, connect the
high-speed output common terminal to the differential receiver common terminal of the drive unit.
Failure to do so may cause the module to fail or malfunction because of the potential difference that
occurs between the high-speed output common terminal and the differential receiver common
terminal.

11
[Wiring Precautions]
CAUTION
●Individually ground the FG and LG terminals of the programmable controller with a ground resistance
of 100 ohms or less. Failure to do so may result in electric shock or malfunction.
●Use applicable solderless terminals and tighten them within the specified torque range. If any spade
solderless terminal is used, it may be disconnected when the terminal screw comes loose, resulting in
failure.
●Check the rated voltage and signal 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 fire
or failure.
●Connectors for external devices must be crimped or pressed with the tool specified by the
manufacturer, or must be correctly soldered. Incomplete connections may cause short circuit, fire, or
malfunction.
●Securely connect the connector to the module. Poor contact may cause malfunction.
●Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 100mm or more between them. Failure to do so may result in malfunction
due to noise.
●Place the cables in a duct or clamp them. If not, dangling cable may swing or inadvertently be pulled,
resulting in damage to the module or cables or malfunction due to poor contact. Do not clamp the
extension cables with the jacket stripped. Doing so may change the characteristics of the cables,
resulting in malfunction.
●Check the interface type and correctly connect the cable. Incorrect wiring (connecting the cable to an
incorrect interface) may cause failure of the module and external device.
●Tighten the terminal screws or connector screws within the specified torque range. Undertightening
can cause drop of the screw, short circuit, fire, or malfunction. Overtightening can damage the screw
and/or module, resulting in drop, short circuit, fire, or malfunction.
●When disconnecting the cable from the module, do not pull the cable by the cable part. For the cable
with connector, hold the connector part of the cable. For the cable connected to the terminal block,
loosen the terminal screw. Pulling the cable connected to the module may result in malfunction or
damage to the module or cable.
●Prevent foreign matter such as dust or wire chips from entering the module. Such foreign matter can
cause a fire, failure, or malfunction.
●A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring. Do not remove the film during wiring. Remove it for heat
dissipation before system operation.

12
[Wiring Precautions]
CAUTION
●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, refer to Page 122 Wiring in this manual.
●For Ethernet cables to be used in the system, select the ones that meet the specifications in the user's
manual for the module used. If not, normal data transmission is not guaranteed.
[Precautions for using channel isolated analog-digital converter modules, channel isolated
digital-analog converter modules, channel isolated RTD input modules, and temperature
control modules]
●Individually ground the shielded cables of the programmable controller with a ground resistance of
100 ohms or less. Failure to do so may result in electric shock or malfunction.
[Precautions for using channel isolated thermocouple input modules]
●Individually ground the shielded cables of the programmable controller with a ground resistance of
100 ohms or less. Failure to do so may result in electric shock or malfunction.
●Do not place the module near a device that generates magnetic noise.
[Precautions for using high-speed counter modules and flexible high-speed I/O control
modules]
●Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 150mm or more between them. Failure to do so may result in malfunction
due to noise.
●Ground the shield cable on the encoder side (relay box) with a ground resistance of 100 ohm or less.
Failure to do so may cause malfunction.
[Precautions for using CC-Link IE Controller Network (when optical fiber cables are used)]
●For optical fiber cables to be used in the system, select the ones that meet the specifications in the
MELSEC iQ-R Ethernet/CC-Link IE User's Manual (Startup). If not, normal data transmission is not
guaranteed.
[Precautions for using CC-Link system master/local modules]
●Use Ver.1.10-compatible CC-Link dedicated cables in a CC-Link system. If not, the performance of
the CC-Link system is not guaranteed. For the station-to-station cable length and the maximum
overall cable length, follow the specifications in the MELSEC iQ-R CC-Link System Master/Local
Module User's Manual (Startup). If not, normal data transmission is not guaranteed.
[Precautions for using redundant function modules]
●For tracking cables to be used in the system, select the ones that meet the specifications in the
MELSEC iQ-R CPU Module User's Manual (Startup). If not, normal data transmission is not
guaranteed.
[Precautions for using AnyWireASLINK master modules]
●Do not apply the 24VDC power before wiring the entire AnyWireASLINK system. If the power is
applied before wiring, normal data transmission is not guaranteed.
●Connect a 24VDC external power supply to the device(s) in an AnyWireASLINK system.

13
[Startup and Maintenance Precautions]
[Startup and Maintenance Precautions]
WARNING
●Do not touch any terminal while power is on. Doing so will cause electric shock or malfunction.
●Correctly connect the battery connector. Do not charge, disassemble, heat, short-circuit, solder, or
throw the battery into the fire. Also, do not expose it to liquid or strong shock. Doing so will cause the
battery to produce heat, explode, ignite, or leak, resulting in injury and fire.
●Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal screws, connector screws, or module fixing screws. Failure to do so may
result in electric shock.
CAUTION
●When connecting an external device with a CPU module or intelligent function module to modify data
of a running programmable controller, configure an interlock circuit in the program to ensure that the
entire system will always operate safely. For other forms of control (such as program modification,
parameter change, forced output, or operating status change) of a running programmable controller,
read the relevant manuals carefully and ensure that the operation is safe before proceeding. Improper
operation may damage machines or cause accidents.
●Especially, when a remote programmable controller is controlled by an external device, immediate
action cannot be taken if a problem occurs in the programmable controller due to a communication
failure. To prevent this, configure an interlock circuit in the program, and determine corrective actions
to be taken between the external device and CPU module in case of a communication failure.
●Do not 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 or removing the
module. Failure to do so may cause the module to fail or malfunction.
●Tighten the screws within the specified torque range. Undertightening can cause drop of the
component or wire, short circuit, or malfunction. Overtightening can damage the screw and/or module,
resulting in drop, short circuit, or malfunction.
●After the first use of the product, do not mount/remove the module to/from the base unit, and the
terminal block to/from the module, and do not insert/remove the extended SRAM cassette to/from the
CPU module more than 50 times (IEC 61131-2 compliant) respectively. Exceeding the limit may cause
malfunction.
●After the first use of the product, do not insert/remove the SD memory card to/from the CPU module
more than 500 times. Exceeding the limit may cause malfunction.
●Do not touch the metal terminals on the back side of the SD memory card. Doing so may cause
malfunction or failure of the module.
●Do not touch the integrated circuits on the circuit board of an extended SRAM cassette. Doing so may
cause malfunction or failure of the module.

14
[Startup and Maintenance Precautions]
CAUTION
●Do not drop or apply shock to the battery to be installed in the module. Doing so may damage the
battery, causing the battery fluid to leak inside the battery. If the battery is dropped or any shock is
applied to it, dispose of it without using.
●Startup and maintenance of a control panel must be performed by qualified maintenance personnel
with knowledge of protection against electric shock. Lock the control panel so that only qualified
maintenance personnel can operate it.
●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.
[Precautions for using flexible high-speed I/O control modules]
●When performing online operations of the running module from an external device such as a personal
computer connected, read the relevant manuals carefully and ensure that the operation is safe before
proceeding.
●Before changing any setting of the module, read the relevant manuals carefully, ensure the safety, and
change the operating status of the CPU module to STOP. Especially when operating the module in the
network system, ensure the safety thoroughly because controlled machines are likely to be moved
inadvertently. Improper operation may damage machines or cause accidents.
[Precautions for using positioning modules, Motion CPU modules, and Simple Motion
modules]
●Before testing the operation, set a low speed value for the speed limit parameter so that the operation
can be stopped immediately upon occurrence of a hazardous condition.
●Confirm and adjust the program and each parameter before operation. Unpredictable movements
may occur depending on the machine.
[Precautions for using Motion CPU modules and Simple Motion modules]
●When using the absolute position system function, on starting up, and when the module or absolute
position motor has been replaced, always perform a home position return.
●Before starting the operation, confirm the brake function.
●Do not perform a megger test (insulation resistance measurement) during inspection.
●After maintenance and inspections are completed, confirm that the position detection of the absolute
position detection function is correct.
●Lock the control panel and prevent access to those who are not certified to handle or install electric
equipment.
[Precautions for using remote head modules]
●When connecting an external device with a remote head module to modify data of a running
programmable controller, configure an interlock circuit in the program of the master station to ensure
that the entire system will always operate safely. For other forms of control (such as parameter
change, forced output, or operating status change) of a running remote head module, read the
relevant manuals carefully and ensure that the operation is safe before proceeding. Improper
operation may damage machines or cause accidents.
●Especially, when a remote head module is remotely controlled by an external device, immediate
action cannot be taken if a problem occurs in the remote head module due to a communication failure.
To prevent this, configure an interlock circuit in the program of the master station, and determine
corrective actions to be taken between the external device and remote head module in case of a
communication failure.

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[Operating Precautions]
[Disposal Precautions]
[Transportation Precautions]
CAUTION
●When changing data and operating status, and modifying program of the running programmable
controller from an external device such as a personal computer connected to an intelligent function
module, read relevant manuals carefully and ensure the safety before operation. Incorrect change or
modification may cause system malfunction, damage to the machines, or accidents.
●Do not power off the programmable controller or reset the CPU module while the setting values in the
buffer memory are being written to the flash ROM in the module. Doing so will make the data in the
flash ROM and SD memory card undefined. The values need to be set in the buffer memory and
written to the flash ROM and SD memory card again. Doing so can cause malfunction or failure of the
module.
[Precautions for using positioning modules, Motion CPU modules, and Simple Motion
modules]
●Note that when the reference axis speed is specified for interpolation operation, the speed of the
partner axis (2nd, 3rd, or 4th axis) may exceed the speed limit value.
●Do not go near the machine during test operations or during operations such as teaching. Doing so
may lead to injuries.
CAUTION
●When disposing of this product, treat it as industrial waste.
●When disposing of batteries, separate them from other wastes according to the local regulations. For
details on battery regulations in EU member states, refer to Page 197 Disposal precautions in this
manual.
CAUTION
●When transporting lithium batteries, follow the transportation regulations. For details on the regulated
models, refer to Page 196 Transport guidelines in this manual.
●The halogens (such as fluorine, chlorine, bromine, and iodine), which are contained in a fumigant
used for disinfection and pest control of wood packaging materials, may cause failure of the product.
Prevent the entry of fumigant residues into the product or consider other methods (such as heat
treatment) instead of fumigation. The disinfection and pest control measures must be applied to
unprocessed raw wood.

16
CONDITIONS OF USE FOR THE PRODUCT
• For Safety CPUs
(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.
(1) Although MELCO has obtained the certification for Product's compliance to the international safety standards
IEC61508, EN954-1/ISO13849-1 from TUV Rheinland, this fact does not guarantee that Product will be free from any
malfunction or failure. The user of this Product shall comply with any and all applicable safety standard, regulation or
law and take appropriate safety measures for the system in which the Product is installed or used and shall take the
second or third safety measures other than the Product. MELCO is not liable for damages that could have been
prevented by compliance with any applicable safety standard, regulation or law.
(2) MELCO prohibits the use of Products with or in any application involving, and MELCO shall not be liable for a default, a
liability for defect warranty, a quality assurance, negligence or other tort and a product liability in these applications.
(a) power plants,
(b) trains, railway systems, airplanes, airline operations, other transportation systems,
(c) hospitals, medical care, dialysis and life support facilities or equipment,
(d) amusement equipments,
(e) incineration and fuel devices,
(f) handling of nuclear or hazardous materials or chemicals,
(g) mining and drilling,
(h) and other applications where the level of risk to human life, health or property are elevated.

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INTRODUCTION
Thank you for purchasing the Mitsubishi Electric MELSEC iQ-R series programmable controllers.
This manual describes the system configuration, specifications, installation, wiring, maintenance, and inspection of MELSEC
iQ-R series programmable controllers.
Before using this product, please read this manual and the relevant manuals carefully and develop familiarity with the
functions and performance of the MELSEC iQ-R series programmable controller to handle the product correctly.
When applying the program and circuit examples provided in this manual to an actual system, ensure the applicability and
confirm that it will not cause system control problems.
Please make sure that the end users read this manual.
• C Controller module
When using the C Controller module and reading this manual and relevant manuals, read "Programmable
controller CPU" as "C Controller module".
Refer to the following instead of the GX Works3 Operating Manual, MELSEC iQ-R CPU Module User's
Manual (Startup), and MELSEC iQ-R CPU Module User's Manual (Application).
CW Configurator Operating Manual
MELSEC iQ-R C Controller Module User's Manual (Startup)
MELSEC iQ-R C Controller Module User's Manual (Application)
•MotionCPU
When using the Motion CPU and reading this manual and relevant manuals, read "Programmable controller
CPU" as "Motion CPU".
Refer to the following instead of the MELSEC iQ-R CPU Module User's Manual (Startup) and MELSEC iQ-R
CPU Module User's Manual (Application).
MELSEC iQ-R Motion Controller User's Manual
MELSEC iQ-R Motion Controller Programming Manual (Common)
• NCCPU
When using the NCCPU and reading this manual and relevant manuals, read "Programmable controller CPU"
as "NCCPU".
Refer to the following instead of the MELSEC iQ-R CPU Module User's Manual (Startup) and MELSEC iQ-R
CPU Module User's Manual (Application).
C80 Series Connection and Setup Manual
C80 Series Instruction Manual
C80 Series Maintenance Manual

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MELSEC iQ-R series manuals
The manuals are categorized into the following.
Read the Module Configuration Manual before configuring the system because the common descriptions of all modules are
included.
Manual Description
Module Configuration Manual Common descriptions of the hardware configuration of all modules
User's Manual
(for each module)
Startup Specifications, a function list, and procedures before operation of each module
Application Function details, parameter settings, error codes, special relay areas, and special register areas of
each module
Programming Manual
(separated by topics)
Programming languages, instructions, and function formulas
Operating Manual Operation methods of the tool
Online Module Change Manual Online module change, which allows a module to be changed without stopping the system for
programmable controllers
Reference Manual
(for each function or communication protocol)
Common functions of modules or specifications of communication protocols, and how to use them
Common
(Read this manual before
configuring the system.)
Description of each module
Description of the software
Description of the functions
Module Configuration
Manual
Programming Manual
Reference ManualOnline Module Change
Manual
Operating Manual
User's Manual (Startup) User's Manual
(Application)