Mitsubishi Electric MELSEC Q Series User manual

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SAFETY PRECAUTIONS 
(Always read before starting use.)
Before using this product, please read this manual introduced in this manual carefully and pay full
attention to safety to handle the product correctly.
The instructions given in this manual are concerned with this product. For the safety instructions of the
programmable controller system, please read the user's manual for the CPU module to use.
In this manual, the safety instructions are ranked as "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.
Note that the !CAUTION level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to personal safety.
Please store this manual in a safe place and make it accessible when required. Always forward it to the
end user.
!WARNING
!CAUTION

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Precautions for using the MELSEC-Q series Ethernet interface
module
[Design Precautions]
!WARNING
For the operating status of each station after a communication failure, refer to relevant manuals
for the network. Erroneous outputs and malfunctions may lead to accidents.
Not doing so can cause an accident due to false output or malfunction.
To prevent the malfunction of the programmable controller system due to harmful e-mails, take
preventive measures (such as antivirus measures) so that the mail server for this module does
not receive harmful e-mails.
To maintain the safety of the programmable controller system against unauthorized access from
external devices via the Internet, take appropriate measures.
When connecting a peripheral with the CPU module or connecting an external device, such as a
personal computer, with an intelligent function module to modify data of a running
programmable controller, configure an interlock circuit in the program 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 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" of the buffer memory in the intelligent function
module.
Also, do not use any "use prohibited" signals as an output signal from the programmable
controller CPU to the intelligent function module.
Doing so may cause malfunction of the programmable controller system.

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[Design Precautions]
!CAUTION
Do not bundle the control wires and the communication cables with the main circuit and the
power wires, and do not install them close to each other. They should be installed at least 100
mm (3.94 in.) away from each other. Failure to do so may generate noise that may cause
malfunctions.
When changing the operating status of the programmable controller CPU (such as remote
RUN/STOP) from the external device, select "Always wait for OPEN (Communication possible
at STOP time)" for the "Initial timing" setting in the network parameter. The communication line
will be closed when "Do not wait for OPEN (Communications impossible at STOP time)" is
selected and the remote STOP is executed from the external device. Consequently, the
programmable controller CPU cannot reopen the communication line, and the external device
cannot execute the remote RUN.
[Installation Precautions]
!WARNING
Use the programmable controller in an environment that meets the general specifications in the
user’s manual for the CPU module used. Using the programmable controller in any other
operating environments may cause electric shocks, fires or malfunctions, or may damage or
degrade the module.
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 or removing
a module.
Failure to do so may result in damage to the product.
Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.

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[Wiring Instructions]
!CAUTION
Connectors for external connection must be crimped or pressed with the tool specified by the
manufacturer, or must be correctly soldered.
If the connection is incomplete, it may cause the module to short circuit, catch fire, or
malfunction.
Shut off the external power supply for the system in all phases before connecting the AUI cable.
When connecting a cable with connector to the module, connect the connector part to the
module securely.
Make sure to place the communication and power cables to be connected to the module in a
duct or fasten them using a clamp. If the cables are not placed in a duct or fastened with a
clamp, their positions may be unstable or moved, and they may be pulled inadvertently.
This may damage the module and the cables or cause the module to malfunction because of
faulty cable connections.
Tighten the terminal screws using the specified torque. If the terminal screws are loose, it may
cause the module to short-circuit, malfunction or fall off. If the terminal screws are tightened
excessively, it may damage the screws and cause the module to short-circuit, malfunction or fall
off.
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.
Correctly solder coaxial cable connectors. Incomplete soldering may result in malfunction.

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[Setup and Maintenance Precautions]
!CAUTION
Never disassemble or modify the module. This may cause breakdowns, malfunctions, injuries or
fire.
Before mounting/dismounting the module, be sure to shut off all phases of external power supply
used by the system.
Failure to do so may cause module failure or malfunctions.
Do not mount/remove the module onto/from base unit more than 50 times (IEC 61131-2
compliant), after the first use of the product.
Failure to do so may cause the module to malfunction due to poor contact of connector.
Do not touch the terminals while the power is on. Doing so may cause electric shocks or
malfunctions.
Before cleaning up and retightening terminal screws and module fixing screws, be sure to shut
off all phases of external power supply used by the system.
Not doing so may cause failure or malfunction of the module.
If the screws are loose, it may cause the module to fallout, short circuits, or malfunction.
If the screws are tightened too much, it may cause damages to the screws and/or the module,
resulting in the module falling out, short circuits or malfunction.
Always make sure to touch the grounded metal to discharge the electricity charged in the body,
etc., before touching the module.
Failure to do so may cause a failure or malfunctions of the module.
[Operating Precautions]
!CAUTION
When changing data and operating status, and modifying program of the running programmable
controller from 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.
[Precautions When Disposing of This Product]
!CAUTION
Dispose of this product as an industrial waste.

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Precautions for using the MELSEC-L series Ethernet interface
module
[Design Precautions]
!WARNING
For the operating status of each station after a communication failure, refer to relevant manuals
for each network. Incorrect output or malfunction due to a communication failure may result in
an accident.
To prevent the malfunction of the programmable controller system due to harmful e-mails, take
preventive measures (such as antivirus measures) so that the mail server for this module does
not receive harmful e-mails.
To maintain the safety of the programmable controller system against unauthorized access from
external devices via the Internet, take appropriate measures.
When connecting a peripheral with the CPU module or connecting an external device, such as a
personal computer, with an intelligent function module to modify data of a running
programmable controller, configure an interlock circuit in the program 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 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" of the buffer memory in the intelligent function
module. Also, do not use any "use prohibited" signal as an output signal from the CPU module
to the intelligent function module. Doing so may cause malfunction of the programmable
controller system.

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[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.
When changing the operating status of the CPU module (such as remote RUN/STOP) from the
external device, select "Always wait for OPEN (Communication possible at STOP time)" for the
"Initial timing" setting in the network parameter. The communication line will be closed when "Do
not wait for OPEN (Communications impossible at STOP time)" is selected and the remote
STOP is executed from the external device. Consequently, the CPU module cannot reopen the
communication line, and the external device cannot execute the remote RUN.
[Installation Precautions]
!CAUTION
Use the programmable controller in an environment that meets the general specifications in the
Safety Guidelines included with the MELSEC-L series CPU module. Failure to do so may result
in electric shock, fire, malfunction, or damage to or deterioration of the product.
To interconnect modules, engage the respective connectors and securely lock the module joint
levers until they click. Incorrect interconnection may cause malfunction, failure, or drop of the
module.
Shut off the external power supply (all phases) used in the system before mounting or removing
a module. Failure to do so may cause the module to fail or malfunction.
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]
!CAUTION
When connecting a cable with connector to the module, connect the connector part to the
module securely.
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.
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.

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[Startup and Maintenance Precautions]
!WARNING
Shut off the external power supply (all phases) used in the system before cleaning the module.
Failure to do so may result in electric shock.
[Startup and Maintenance Precautions]
!CAUTION
Do not disassemble or modify the module. Doing so may cause failure, malfunction, injury, or a
fire.
Shut off the external power supply (all phases) used in the system before mounting or removing
a module. Failure to do so may cause the module to fail or malfunction.
After the first use of the product (module and display unit), the number of
connections/disconnections is limited to 50 times (in accordance with IEC 61131-2). Exceeding
the limit may cause malfunction.
Before handling the module, touch a conducting object such as a grounded metal to discharge
the static electricity from the human body. Failure to do so may cause the module to fail or
malfunction.
[Operating 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.
[Disposal Precautions]
!CAUTION
When disposing of this product, treat it as industrial waste.