Mitsubishi Electric FX3U-ENET-L User manual

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.
Warranty
Exclusion of loss in opportunity and secondary loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:
(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.
(2)
Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.
(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.
(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe use
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.



HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Side
A
Side
B
JAPANESE
ENGLISH
JY997D37801E
Side
B
Safety Precautions (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by may
also cause severe injury.
It is important to follow all precautions for personal safety.
Associated Manuals
Indicates that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous
conditions, resulting in medium or slight personal injury
or physical damage.
Manual name Manual No. Description
FX3U-ENET-L
INSTALLATION
MANUAL
JY997D37801 This manual
FX3U-ENET-L
User’s Manual
JY997D38001
MODEL CODE:
09R722
Describes the specifications,
wiring, installation, maintenance,
and operations of the FX3U-
ENET-L.
FX3U Series
HARDWARE
MANUAL
JY997D50301
Briefly describes the I/O
specifications, wiring, and
installation of the FX3U Series
PLC.
FX3U Series
User’s Manual
- Hardware Edition
JY997D16501
MODEL CODE:
09R516
Explains the FX3U Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX3S/FX3G/FX3GC/
FX3U/FX3UC Series
Programming Manual
- Basic & Applied
Instruction Edition
JY997D16601
MODEL CODE:
09R517
Describes PLC programming for
basic/applied instructions and
devices.
FX3UC(D, DS, DSS)
Series
HARDWARE
MANUAL
JY997D50501
Briefly describes the I/O
specifications, wiring, and
installation of the FX3UC Series
PLC.
FX3UC-32MT-LT-2
HARDWARE
MANUAL
JY997D31601
Briefly describes the I/O
specifications, wiring, and
installation of the FX3UC-32MT-
LT-2 PLC.
Only this INSTALLATION MANUAL is supplied with the FX3U-ENET-L.
For more details regarding the FX3U/FX3UC Series hardware, PLC programming
commands, and special function blocks/units, refer to the appropriate manuals.
How to obtain manuals
For product manuals or documents, consult with the Mitsubishi Electric dealer from
who you purchased your product.
How to obtain FX Configurator-EN-L
The parameter setting software, FX Configurator-EN-L is not supplied with this product.
Consult with the Mitsubishi Electric dealer from who you purchased this product
Certification of UL, cUL standards
FX3U-ENET-L units comply with the UL standards (UL, cUL).
UL, cUL File Number: E95239
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Compliance with EC directive (CE Marking)
This note does not guarantee that an entire mechanical module produced in
accordance with the contents of this note will comply with the following standards.
Compliance to EMC directive and LVD directive for the entire mechanical module
should be checked by the user / manufacturer. For more information please consult
with your nearest Mitsubishi product provider.
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Requirement for Compliance with EMC directive
The following products have shown compliance through direct testing (of the identified
standards below) and design analysis (through the creation of a technical construction
file) to the European Directive for Electromagnetic Compatibility (2014/30/EU) when
used as directed by the appropriate documentation.
Attention
This product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX3U series manufactured
from October 1st, 2009 FX3U-ENET-L
Caution for EC Directive
Installation in Enclosure
Programmable logic controllers are open-type devices that must be installed
and used within conductive control cabinets. Please use the programmable
logic controller while installed within a conductive shielded control cabinet.
Please secure the cabinet door to the control cabinet (for conduction).
Installation within a control cabinet greatly affects the safety of the system and
aids in shielding noise from the programmable logic controller.
Control cabinet
- The control cabinet must be conductive.
- Ground the control cabinet with the thickest possible grounding cable.
- To ensure that there is electric contact between the control cabinet and its door,
connect the cabinet and its doors with thick wires.
- In order to suppress the leakage of radio waves, the control cabinet structure
must have minimal openings. Also, wrap the cable holes with a shielding cover or
other shielding devices.
- The gap between the control cabinet and its door must be as small as possible by
attaching EMI gaskets between them.
Manual name Manual No. Description
FX3UC Series
User’s Manual
- Hardware Edition
JY997D28701
MODEL CODE:
09R519
Explains the FX3UC Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX Configurator-EN-L
operation Manual
JY997D38401
MODEL CODE:
09R929
Describes the operation method of
FX Configurator-EN-L.
Standard Remark
EN61131-2:2007
Programmable controllers
- Equipment requirements
and tests
Compliance with all relevant aspects of the
standard.
EMI
• Radiated Emission
• Conducted Emission
EMS
• Radiated electromagnetic field
• Fast transient burst
• Electrostatic discharge
• High-energy surge
• Voltage drops and interruptions
• Conducted RF
• Power frequency magnetic field
* These wires are used to improve the conductivity between the door and control
cabinet.
Notes for compliance with EN61131-2:2007
General notes on the use of the power supply cable.
- The FX3U-ENET-L unit requires that the cable used for power supply is 30m or
less.
- When the cable used for power supply exceeds 30m, a noise filter (Ex. TDK-
Lambda MBS1205-22 or similar) should be placed on the 24V DC power cabling
as close (within 500mm) to the FX3U-ENET-L termination points as possible,
refer to following figure.
1. Outline
FX3U-ENET-L is an Ethernet unit for the FX3U/FX3UC Series PLC that is compliant with
100BASE-TX/10BASE-T and has the features as follows.
1) Data and programs within the PLC can be sent and received via Ethernet by
using GX Works2 Ver. 1.09K or later/GX Developer Ver.8.88S or later.*1
2) Communication between PLCs or with a general Ethernet device is possible by
fixed buffer communication. (TCP/IP or UDP/IP)*1
3) Users can develop custom software to communicate with the PLC by using MC
(MELSEC Communication) protocol (A-compatible 1E frame subset, for details,
refer to user's manual). (TCP/IP or UDP/IP)*1
4) E-mail can be sent. (SMTP protocol)
5) The FX3U-ENET-L parameters can be set easily using FX Configurator-EN-L.
6) The diagnostic functions of FX Configurator-EN-L enables easy diagnostics and
troubleshooting of the FX3U-ENET-L.
*1 It is necessary to set up the open system by configuring open settings in
advance.
1.1 Incorporated Items
1.2 External Dimensions and Part Names
MASS(Weigth): Approx. 0.3 kg (0.66 lbs) DIN rail width: 35 mm (1.38”)
[1] Direct mounting hole:2 holes of  4.5 mm (0.18”)
Used when
FX3U-ENET-L is directly mounted.
Not used when DIN rail is mounted.
[2] DIN rail mounting groove [3] DIN rail mounting hook
[4] Extension cable [5] RUN LED
[6] INIT. LED [7] 100M LED
[8] SD LED [9] RD LED
[10] ERR. LED [11] COM.ERR. LED
[12] POWER LED [13] C1 to C4 LEDs
[14] 10BASE-T/100BASE-TX connector (RJ45)
[15] Top cover
[16] External 24VDC terminal (M3 terminal block screw)
[17] Extension connector
Included Item
FX3U-ENET-L 1 unit
Label for indication of special function unit/block number 1 sheet
Dust proof protection sheet 1 sheet
Installation Manual (Japanese version, English version) 1 manual each
Shielding cover
Shielded cable
Wires* EMI gasket
Exceeding 30m
24V DC
24V DC power
supply
500mm or less Noise
Filter
FX 3U -ENET-L
90(3.55")
55(2.17")
80(3.15")
9(0.36")
87(3.43")
4(0.16") Top cover is
removed
Unit: mm (inches)
[1] [4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[2]
[3] [13]
[16]
[17]
2-4.5 mounting holes
[14]
[15]
Indications of LEDs
LED
Indication ( : Off, : On)
RUN : Normal operation
: Abnormal operation
INIT. : Initial processing normal completion
: Initial processing not performed
100M : 100Mbps
: 10Mbps/When not connected
SD : Data being sent
: Data not being sent
RD : Data being received
: Data not being received
ERR. : Abnormal setting display*
: Normal setting display
COM. ERR. : Abnormal communication display
: Normal communication display
POWER : Power on
: Power off
C1 to C4 : TCP/IP - Connection established
UDP - Open
: TCP/IP - Connection not established
UDP - Closed
*The ERR LED illuminates in the following cases:
- When a parameter setting error occurs in the Ethernet unit
- When an operational error occurs in the PLC CPU
- When an error is found in the Ethernet unit (H/W error)
Pin Configuration
The pin configuration of FX3U-ENET-L RJ45 type modular jack (for category 5 or
category 3) is as follows:
Cables to be used
2. Installation
Pin No. Signal Direction Contents
1 TD+ Out + side of sending data
2TDOut side of sending data
3 RD+ In + side of receiving data
4 Not used -
5 Not used -
6RDIn side of receiving data
7 Not used -
8 Not used -
For 10BASE-T
Category 5e, shielded twisted-pair cable
Category 5, shielded twisted-pair cable
Category 3, shielded twisted-pair cable
For 100BASE-TX Category 5e, shielded twisted-pair cable
Category 5, shielded twisted-pair cable
INSTALLATION
PRECAUTIONS
Make sure to cut off all phases of the power supply externally before
attempting installation work.
Failure to do so may cause electric shock or damage to the product.
Before attaching or replacing the main unit or extension unit, externally cut
off all phases of the power supply. Failure to do so may cause malfunctions
or misoperations.
INSTALLATION
PRECAUTIONS
Use the product within the generic environment specifications described in
PLC main unit manual (Hardware Edition).
Never use the product in areas with excessive dust, oily smoke, conductive
dusts, corrosive gas (salt air, Cl2, H2S, SO2or NO2), flammable gas,
vibration or impacts, or expose it to high temperature, condensation, or rain
and wind. If the product is used in such conditions, fire, malfunctions,
deterioration or damage may occur.
When tightening the terminal screws, stay within the specified torque range.
When tightened insufficiently, short-circuit or failure may occur. When
tightened too much, the screws or the unit may be damaged, causing the
unit disposal, short-circuit, or failure.
Do not touch the conductive part or electric parts of this unit directly.
Doing so may cause failure or malfunctions.
RUN
INIT.
100M
SD
RD
ERR.
COM.ERR.
POWER
C1
C2
C3
C4
81
2.1 Mounting
The FX3U-ENET-L can be mounted directly using screws or on a DIN rail
(DIN46227).
2.1.1 Direct Mounting
The FX3U-ENET-L can be mounted with M4 screws by using the direct mounting
holes.
A space of 1 to 2 mm (0.04” to 0.08”) between each unit is necessary.
2.1.2 DIN Rail Mounting
The FX3U-ENET-L can be mounted on a DIN rail (DIN46227, 35 mm width).
1) Fit the upper edge of the DIN rail mounting
groove (fig. A) onto the DIN rail.
2) Push the unit onto the DIN rail.
2.1.3 Procedure for connecting with the FX3U Series PLC
When connecting to an FX3U:
Before connections, turn off the power to the
PLC.
1) Remove the extension device connector
cover of the main unit.
2) Fold and insert the extension cable in the
corresponding connector as shown to the
right.
3) Reattach the extension device connector
cover on the main unit.
When connecting to an FX3UC:
When connecting the FX3U-ENET-L,
either the FX3UC-1PS-5V or FX2NC-
CNV-IF is required.
1) The connector cover (A) of the
FX3UC-1PS-5V is removed as
shown in the figure to the right.
The FX2NC-CNV-IF does not have
a connector cover.
2) Connect the extension cable as
shown to the right.
3. Specification
For details on specifications, refer to the following manual.
Refer to the FX3U-ENET-L User's Manual.
Install the unit on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board,
thereby causing nonconformities.
Install the product securely using a DIN rail or mounting screws.
When drilling screw holes or wiring, make sure that cutting or wire debris
dose not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation port when
installation work is completed.
Failure to do so may cause fire, equipment failures or malfunctions.
Connect extension cables securely to their designated connectors.
Loose connections may cause malfunctions.
DESIGN
PRECAUTIONS
Make sure to include the following safety circuits outside the PLC to ensure
safe system operation even during external power supply problems or PLC
failure.
Otherwise, malfunctions may cause serious accidents.
1)Most importantly, have the following: an emergency stop circuit, a
protection circuit, an interlock circuit for opposite movements (such as
normal vs. reverse rotation), and an interlock circuit (to prevent damage
to the equipment at the upper and lower positioning limits).
2)Note that when the PLC main unit detects an error such as a watchdog
timer error, during self diagnosis, all outputs are turned off. Also, when an
error that cannot be detected by the PLC main unit occurs in an input/
output control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe
machinery operation in such cases.
INSTALLATION
PRECAUTIONS
1)
2)
A
1)
2)
3)
FX3UC-1PS-5V or
FX2NC-CNV-IF
Extension cable on
the right side
FX3UC-1PS-5V
Connector cover
(A)
Items other than the following are equivalent to those of the PLC main unit.
For general specifications, refer to the manual of the PLC main unit.
Refer to the FX3U Series User's Manual - Hardware Edition.
Refer to the FX3UC Series User's Manual - Hardware Edition.
DESIGN
PRECAUTIONS
Make sure to observe the following precautions in order to prevent any damage to
the machinery or accidents due to abnormal data written to the PLC under the
influence of noise:
1)Do not bundle the main circuit line together with or lay it close to the main
circuit, high-voltage line or load line.
Otherwise, noise disturbance and/or surge induction are likey to take place.
As a guideline, lay the control line at least 100mm (3.94") or more away from
the main circuit or high-voltage lines.
2)Ground the shield wire or shield of a shielded cable. However, do not ground
them at the same point as the high-voltage lines.
Install module so that excessive force will not be applied to the unit or cables.
Failure to do so may result in wire damage/breakage or PLC failure.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not touch any terminals or connector while the PLC's power is on.
Doing so may cause electrical shock or malfunctions.
Before cleaning or retightening screws, externally cut off all phases of the power
supply.
Failure to do so may cause malfunction or failure of this unit.
When the screws are tightened insufficiently, they may fall out and cause a short-
circuit or malfunction. When tightened too much, the screws or the unit may be
damaged, resulting in short-circuit, or malfunction.
When controlling the PLC (especially when changing data, the program or
changing the operating conditions) during operation, ensure that it is safe to do
so.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not disassemble or modify the unit.
Doing so may cause fire, equipment failures, or malfunctions.
The unit case is made of resin. If dropped or subjected to strong impact, the unit
may be damaged.
When this unit is installed or removed from the panel, make sure to externally cut
off all phases of the power supply. Failure to do so may cause malfunction or
failure of this unit.
DISPOSAL
PRECAUTIONS
Please contact a certified electronic waste disposal company for the
environmentally safe recycling and disposal of your device.
TRANSPORTATION AND
STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts larger
than those specified in the general specifications by using dedicated packaging
boxes and shock-absorbing palettes.
Failure to do so may cause failures in the product.
After transportation, verify operation of the product and check for damage of the
mounting part, etc.
Item Specifications
General
specifi-
cation
Ambient temperature 0 to 55C (32 to 131F) when operating and -20
to 75C (-4 to 167F) when stored
Dielectric withstand
voltage 500 V AC for one minute
Between all
terminals and the
ground terminal
Insulation resistance
5 Mor higher by 500 V
DC insulation resistance
tester
Trans-
mission
specifi-
cations
Data transmission
speed 100 Mbps 10 Mbps
Communication
method Full-duplex/Half-duplex
Transmission method Base band
Maximum segment
length 100 m (328’1”)*1
Maximum number of
nodes/connection
Cascade connection
Maximum 2 stages
Cascade connection
Maximum 4 stages
*1 Length between a hub and a node.
*2 Refer to the FX3U-ENET-L User's Manual of e-mail sending function
specifications.
*3 It is not possible to send an attached file and main text simultaneously.
3.1 Applicable PLC
The version number can be checked by reading the last three digits of device D8001/
D8101.
*1 An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the FX3U-ENET-L
with the FX3UC PLC.
3.2 Related software
*1 To use FX Configurator-EN-L, either of the following software should be installed.
- GX Works2(Ver. 1.09K or later)
- GX Developer (Ver. 8.88S or later)
4. Wiring
Number of
simultaneously
open connections
allowed
Fixed buffer
communica-
tion
2 connections
MELSOFT
connection +
MC protocol
A total of 2 connections
Trans-
mission
data
storage
memory
Fixed buffer 1023 word 2
E-mail
*2*3
Attached file 2048 word 1
Main text 256 word 1
Number of I/O occupied points 8 points
Power
supply
specifi-
cations
24 V DC
external power supply
240 mA, 24 V DC +20%, -15%,
ripple (p-p) less than 5%
Allowable
Instanta-
neous power
failure time
Operation can be continued upon occurrence of
instantaneous power failure for 1 ms or less.
5 V DC
internal power supply
5 V DC of PLC is not used.
(5 V DC is converted from 24 V DC external
power supply.)
Make sure to observe the power-on timing and
the procedure.
External dimensions 90(H) 55(W) 87(D) [mm]
3.55"(H) 2.17"(W) 3.43"(D) [inches]
MASS (Weight) Approx. 0.3 kg (0.66 lbs)
Number of connectable units to
the main unit 1
Model name Applicability
FX3U Series PLC Ver. 2.21 and later
Only one FX3U-ENET-L unit can be connected in a main unit.
FX3UC Series PLC*1 Ver. 2.21 and later
Only one FX3U-ENET-L unit can be connected in a main unit.
Model name Applicability
FX Configurator-EN-L*1 Ver. 1.00 and later
GX Works2 Ver. 1.09K and later
GX Developer Ver. 8.88S and later
WIRING
PRECAUTIONS
Make sure to cut off all phases of the power supply externally before
attempting wiring work.
Failure to do so may cause electric shock or damage to the product.
WIRING
PRECAUTIONS
Before wiring the unit, confirm that the rated voltage and terminal allocation
of the unit are correct. An incorrect voltage supply and/or incorrect wiring
may cause fire, malfunction, or failure.
Perform class D grounding (grounding resistance: 100or less) to the
grounding terminal on the main unit.
Do not use common grounding with heavy electrical systems.
Prevent cutting or wiring debris from entering the main unit. Failure to do so
cause fire, malfunctions, or failures.
Item Specifications 4.1 Grounding
Wiring and power supply wiring between PLC and FX3U-ENET-L
Example usage of FX3U
电器电子产品有害物质限制使用标识要求」的表示方式
Note: This symbol mark is for China only.
含有有害6物质的名称，含有量，含有部品
本产品中所含有的有害6 物质的名称，含有量，含有部品如下表
所示。
产品中有害物质的名称及含量
本表格依据SJ/T 11364的规定编制。
○:
表示该有害物质在该部件所有均质材料中的含量均在GB/T 26572
规定的限量要求以下。
×: 表示该有害物质至少在该部件的某一均质材料中的含量超出GB/T
26572规定的限量要求。
基于中国标准法的参考规格:GB/T15969.2
部件名称
有害物质
铅
(Pb)
汞
(Hg)
镉
(Cd)
六价铬
(Cr(VI))
多溴联苯
(PBB)
多溴
二苯醚
(PBDE)
可编程
控制器
外壳 ○ ○ ○ ○ ○ ○
印刷基板 × ○ ○ ○ ○ ○
PLCPLCPLC
Shared grounding
(Good condition)
Independent grounding
(Best condition)
Common grounding
(Not allowed)
Other
equipment Other
equipment
Other
equipment
LAN
24+
HUB
FX 3U
ENET-L
24-
Externally power supply for FX 3U -ENET-L
24V DC
D Grounding
(100 Ωor less)
Ethernet
modular jack
(RJ-45)
FX3U-ENET-L
INSTALLATION MANUAL
This manual describes the part names, dimensions, mounting, and specifications
of the product. Before use, read this manual and the manuals of all relevant
products fully to acquire proficiency in handling and operating the product. Make
sure to learn all the product information, safety information, and precautions.
Store this manual in a safe place so that it can be taken out and read whenever
necessary. Always forward it to the end user.
Registration: Ethernet is a trademark of Xerox Corporation.
The company and product name described in this manual are registered
trademarks or the trademarks of their respective companies.
Effective February 2018
Specifications are subject to change without notice.
2009 Mitsubishi Electric Corporation
Manual Number JY997D37801
Revision E
Date February 2018

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.
Warranty
Exclusion of loss in opportunity and secondary loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:
(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.
(2)
Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.
(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.
(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe use
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.



HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Side
A
Side
B
JAPANESE
ENGLISH
JY997D37801E
Side
B
Safety Precautions (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by may
also cause severe injury.
It is important to follow all precautions for personal safety.
Associated Manuals
Indicates that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous
conditions, resulting in medium or slight personal injury
or physical damage.
Manual name Manual No. Description
FX3U-ENET-L
INSTALLATION
MANUAL
JY997D37801 This manual
FX3U-ENET-L
User’s Manual
JY997D38001
MODEL CODE:
09R722
Describes the specifications,
wiring, installation, maintenance,
and operations of the FX3U-
ENET-L.
FX3U Series
HARDWARE
MANUAL
JY997D50301
Briefly describes the I/O
specifications, wiring, and
installation of the FX3U Series
PLC.
FX3U Series
User’s Manual
- Hardware Edition
JY997D16501
MODEL CODE:
09R516
Explains the FX3U Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX3S/FX3G/FX3GC/
FX3U/FX3UC Series
Programming Manual
- Basic & Applied
Instruction Edition
JY997D16601
MODEL CODE:
09R517
Describes PLC programming for
basic/applied instructions and
devices.
FX3UC(D, DS, DSS)
Series
HARDWARE
MANUAL
JY997D50501
Briefly describes the I/O
specifications, wiring, and
installation of the FX3UC Series
PLC.
FX3UC-32MT-LT-2
HARDWARE
MANUAL
JY997D31601
Briefly describes the I/O
specifications, wiring, and
installation of the FX3UC-32MT-
LT-2 PLC.
Only this INSTALLATION MANUAL is supplied with the FX3U-ENET-L.
For more details regarding the FX3U/FX3UC Series hardware, PLC programming
commands, and special function blocks/units, refer to the appropriate manuals.
How to obtain manuals
For product manuals or documents, consult with the Mitsubishi Electric dealer from
who you purchased your product.
How to obtain FX Configurator-EN-L
The parameter setting software, FX Configurator-EN-L is not supplied with this product.
Consult with the Mitsubishi Electric dealer from who you purchased this product
Certification of UL, cUL standards
FX3U-ENET-L units comply with the UL standards (UL, cUL).
UL, cUL File Number: E95239
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Compliance with EC directive (CE Marking)
This note does not guarantee that an entire mechanical module produced in
accordance with the contents of this note will comply with the following standards.
Compliance to EMC directive and LVD directive for the entire mechanical module
should be checked by the user / manufacturer. For more information please consult
with your nearest Mitsubishi product provider.
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Requirement for Compliance with EMC directive
The following products have shown compliance through direct testing (of the identified
standards below) and design analysis (through the creation of a technical construction
file) to the European Directive for Electromagnetic Compatibility (2014/30/EU) when
used as directed by the appropriate documentation.
Attention
This product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX3U series manufactured
from October 1st, 2009 FX3U-ENET-L
Caution for EC Directive
Installation in Enclosure
Programmable logic controllers are open-type devices that must be installed
and used within conductive control cabinets. Please use the programmable
logic controller while installed within a conductive shielded control cabinet.
Please secure the cabinet door to the control cabinet (for conduction).
Installation within a control cabinet greatly affects the safety of the system and
aids in shielding noise from the programmable logic controller.
Control cabinet
- The control cabinet must be conductive.
- Ground the control cabinet with the thickest possible grounding cable.
- To ensure that there is electric contact between the control cabinet and its door,
connect the cabinet and its doors with thick wires.
- In order to suppress the leakage of radio waves, the control cabinet structure
must have minimal openings. Also, wrap the cable holes with a shielding cover or
other shielding devices.
- The gap between the control cabinet and its door must be as small as possible by
attaching EMI gaskets between them.
Manual name Manual No. Description
FX3UC Series
User’s Manual
- Hardware Edition
JY997D28701
MODEL CODE:
09R519
Explains the FX3UC Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX Configurator-EN-L
operation Manual
JY997D38401
MODEL CODE:
09R929
Describes the operation method of
FX Configurator-EN-L.
Standard Remark
EN61131-2:2007
Programmable controllers
- Equipment requirements
and tests
Compliance with all relevant aspects of the
standard.
EMI
• Radiated Emission
• Conducted Emission
EMS
• Radiated electromagnetic field
• Fast transient burst
• Electrostatic discharge
• High-energy surge
• Voltage drops and interruptions
• Conducted RF
• Power frequency magnetic field
* These wires are used to improve the conductivity between the door and control
cabinet.
Notes for compliance with EN61131-2:2007
General notes on the use of the power supply cable.
- The FX3U-ENET-L unit requires that the cable used for power supply is 30m or
less.
- When the cable used for power supply exceeds 30m, a noise filter (Ex. TDK-
Lambda MBS1205-22 or similar) should be placed on the 24V DC power cabling
as close (within 500mm) to the FX3U-ENET-L termination points as possible,
refer to following figure.
1. Outline
FX3U-ENET-L is an Ethernet unit for the FX3U/FX3UC Series PLC that is compliant with
100BASE-TX/10BASE-T and has the features as follows.
1) Data and programs within the PLC can be sent and received via Ethernet by
using GX Works2 Ver. 1.09K or later/GX Developer Ver.8.88S or later.*1
2) Communication between PLCs or with a general Ethernet device is possible by
fixed buffer communication. (TCP/IP or UDP/IP)*1
3) Users can develop custom software to communicate with the PLC by using MC
(MELSEC Communication) protocol (A-compatible 1E frame subset, for details,
refer to user's manual). (TCP/IP or UDP/IP)*1
4) E-mail can be sent. (SMTP protocol)
5) The FX3U-ENET-L parameters can be set easily using FX Configurator-EN-L.
6) The diagnostic functions of FX Configurator-EN-L enables easy diagnostics and
troubleshooting of the FX3U-ENET-L.
*1 It is necessary to set up the open system by configuring open settings in
advance.
1.1 Incorporated Items
1.2 External Dimensions and Part Names
MASS(Weigth): Approx. 0.3 kg (0.66 lbs) DIN rail width: 35 mm (1.38”)
[1] Direct mounting hole:2 holes of  4.5 mm (0.18”)
Used when
FX3U-ENET-L is directly mounted.
Not used when DIN rail is mounted.
[2] DIN rail mounting groove [3] DIN rail mounting hook
[4] Extension cable [5] RUN LED
[6] INIT. LED [7] 100M LED
[8] SD LED [9] RD LED
[10] ERR. LED [11] COM.ERR. LED
[12] POWER LED [13] C1 to C4 LEDs
[14] 10BASE-T/100BASE-TX connector (RJ45)
[15] Top cover
[16] External 24VDC terminal (M3 terminal block screw)
[17] Extension connector
Included Item
FX3U-ENET-L 1 unit
Label for indication of special function unit/block number 1 sheet
Dust proof protection sheet 1 sheet
Installation Manual (Japanese version, English version) 1 manual each
Shielding cover
Shielded cable
Wires* EMI gasket
Exceeding 30m
24V DC
24V DC power
supply
500mm or less Noise
Filter
FX 3U -ENET-L
90(3.55")
55(2.17")
80(3.15")
9(0.36")
87(3.43")
4(0.16") Top cover is
removed
Unit: mm (inches)
[1] [4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[2]
[3] [13]
[16]
[17]
2-4.5 mounting holes
[14]
[15]
Indications of LEDs
LED
Indication ( : Off, : On)
RUN : Normal operation
: Abnormal operation
INIT. : Initial processing normal completion
: Initial processing not performed
100M : 100Mbps
: 10Mbps/When not connected
SD : Data being sent
: Data not being sent
RD : Data being received
: Data not being received
ERR. : Abnormal setting display*
: Normal setting display
COM. ERR. : Abnormal communication display
: Normal communication display
POWER : Power on
: Power off
C1 to C4 : TCP/IP - Connection established
UDP - Open
: TCP/IP - Connection not established
UDP - Closed
*The ERR LED illuminates in the following cases:
- When a parameter setting error occurs in the Ethernet unit
- When an operational error occurs in the PLC CPU
- When an error is found in the Ethernet unit (H/W error)
Pin Configuration
The pin configuration of FX3U-ENET-L RJ45 type modular jack (for category 5 or
category 3) is as follows:
Cables to be used
2. Installation
Pin No. Signal Direction Contents
1 TD+ Out + side of sending data
2TDOut side of sending data
3 RD+ In + side of receiving data
4 Not used -
5 Not used -
6RDIn side of receiving data
7 Not used -
8 Not used -
For 10BASE-T
Category 5e, shielded twisted-pair cable
Category 5, shielded twisted-pair cable
Category 3, shielded twisted-pair cable
For 100BASE-TX Category 5e, shielded twisted-pair cable
Category 5, shielded twisted-pair cable
INSTALLATION
PRECAUTIONS
Make sure to cut off all phases of the power supply externally before
attempting installation work.
Failure to do so may cause electric shock or damage to the product.
Before attaching or replacing the main unit or extension unit, externally cut
off all phases of the power supply. Failure to do so may cause malfunctions
or misoperations.
INSTALLATION
PRECAUTIONS
Use the product within the generic environment specifications described in
PLC main unit manual (Hardware Edition).
Never use the product in areas with excessive dust, oily smoke, conductive
dusts, corrosive gas (salt air, Cl2, H2S, SO2or NO2), flammable gas,
vibration or impacts, or expose it to high temperature, condensation, or rain
and wind. If the product is used in such conditions, fire, malfunctions,
deterioration or damage may occur.
When tightening the terminal screws, stay within the specified torque range.
When tightened insufficiently, short-circuit or failure may occur. When
tightened too much, the screws or the unit may be damaged, causing the
unit disposal, short-circuit, or failure.
Do not touch the conductive part or electric parts of this unit directly.
Doing so may cause failure or malfunctions.
RUN
INIT.
100M
SD
RD
ERR.
COM.ERR.
POWER
C1
C2
C3
C4
81
2.1 Mounting
The FX3U-ENET-L can be mounted directly using screws or on a DIN rail
(DIN46227).
2.1.1 Direct Mounting
The FX3U-ENET-L can be mounted with M4 screws by using the direct mounting
holes.
A space of 1 to 2 mm (0.04” to 0.08”) between each unit is necessary.
2.1.2 DIN Rail Mounting
The FX3U-ENET-L can be mounted on a DIN rail (DIN46227, 35 mm width).
1) Fit the upper edge of the DIN rail mounting
groove (fig. A) onto the DIN rail.
2) Push the unit onto the DIN rail.
2.1.3 Procedure for connecting with the FX3U Series PLC
When connecting to an FX3U:
Before connections, turn off the power to the
PLC.
1) Remove the extension device connector
cover of the main unit.
2) Fold and insert the extension cable in the
corresponding connector as shown to the
right.
3) Reattach the extension device connector
cover on the main unit.
When connecting to an FX3UC:
When connecting the FX3U-ENET-L,
either the FX3UC-1PS-5V or FX2NC-
CNV-IF is required.
1) The connector cover (A) of the
FX3UC-1PS-5V is removed as
shown in the figure to the right.
The FX2NC-CNV-IF does not have
a connector cover.
2) Connect the extension cable as
shown to the right.
3. Specification
For details on specifications, refer to the following manual.
Refer to the FX3U-ENET-L User's Manual.
Install the unit on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board,
thereby causing nonconformities.
Install the product securely using a DIN rail or mounting screws.
When drilling screw holes or wiring, make sure that cutting or wire debris
dose not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation port when
installation work is completed.
Failure to do so may cause fire, equipment failures or malfunctions.
Connect extension cables securely to their designated connectors.
Loose connections may cause malfunctions.
DESIGN
PRECAUTIONS
Make sure to include the following safety circuits outside the PLC to ensure
safe system operation even during external power supply problems or PLC
failure.
Otherwise, malfunctions may cause serious accidents.
1)Most importantly, have the following: an emergency stop circuit, a
protection circuit, an interlock circuit for opposite movements (such as
normal vs. reverse rotation), and an interlock circuit (to prevent damage
to the equipment at the upper and lower positioning limits).
2)Note that when the PLC main unit detects an error such as a watchdog
timer error, during self diagnosis, all outputs are turned off. Also, when an
error that cannot be detected by the PLC main unit occurs in an input/
output control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe
machinery operation in such cases.
INSTALLATION
PRECAUTIONS
1)
2)
A
1)
2)
3)
FX3UC-1PS-5V or
FX2NC-CNV-IF
Extension cable on
the right side
FX3UC-1PS-5V
Connector cover
(A)
Items other than the following are equivalent to those of the PLC main unit.
For general specifications, refer to the manual of the PLC main unit.
Refer to the FX3U Series User's Manual - Hardware Edition.
Refer to the FX3UC Series User's Manual - Hardware Edition.
DESIGN
PRECAUTIONS
Make sure to observe the following precautions in order to prevent any damage to
the machinery or accidents due to abnormal data written to the PLC under the
influence of noise:
1)Do not bundle the main circuit line together with or lay it close to the main
circuit, high-voltage line or load line.
Otherwise, noise disturbance and/or surge induction are likey to take place.
As a guideline, lay the control line at least 100mm (3.94") or more away from
the main circuit or high-voltage lines.
2)Ground the shield wire or shield of a shielded cable. However, do not ground
them at the same point as the high-voltage lines.
Install module so that excessive force will not be applied to the unit or cables.
Failure to do so may result in wire damage/breakage or PLC failure.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not touch any terminals or connector while the PLC's power is on.
Doing so may cause electrical shock or malfunctions.
Before cleaning or retightening screws, externally cut off all phases of the power
supply.
Failure to do so may cause malfunction or failure of this unit.
When the screws are tightened insufficiently, they may fall out and cause a short-
circuit or malfunction. When tightened too much, the screws or the unit may be
damaged, resulting in short-circuit, or malfunction.
When controlling the PLC (especially when changing data, the program or
changing the operating conditions) during operation, ensure that it is safe to do
so.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not disassemble or modify the unit.
Doing so may cause fire, equipment failures, or malfunctions.
The unit case is made of resin. If dropped or subjected to strong impact, the unit
may be damaged.
When this unit is installed or removed from the panel, make sure to externally cut
off all phases of the power supply. Failure to do so may cause malfunction or
failure of this unit.
DISPOSAL
PRECAUTIONS
Please contact a certified electronic waste disposal company for the
environmentally safe recycling and disposal of your device.
TRANSPORTATION AND
STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts larger
than those specified in the general specifications by using dedicated packaging
boxes and shock-absorbing palettes.
Failure to do so may cause failures in the product.
After transportation, verify operation of the product and check for damage of the
mounting part, etc.
Item Specifications
General
specifi-
cation
Ambient temperature 0 to 55C (32 to 131F) when operating and -20
to 75C (-4 to 167F) when stored
Dielectric withstand
voltage 500 V AC for one minute
Between all
terminals and the
ground terminal
Insulation resistance
5 Mor higher by 500 V
DC insulation resistance
tester
Trans-
mission
specifi-
cations
Data transmission
speed 100 Mbps 10 Mbps
Communication
method Full-duplex/Half-duplex
Transmission method Base band
Maximum segment
length 100 m (328’1”)*1
Maximum number of
nodes/connection
Cascade connection
Maximum 2 stages
Cascade connection
Maximum 4 stages
*1 Length between a hub and a node.
*2 Refer to the FX3U-ENET-L User's Manual of e-mail sending function
specifications.
*3 It is not possible to send an attached file and main text simultaneously.
3.1 Applicable PLC
The version number can be checked by reading the last three digits of device D8001/
D8101.
*1 An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the FX3U-ENET-L
with the FX3UC PLC.
3.2 Related software
*1 To use FX Configurator-EN-L, either of the following software should be installed.
- GX Works2(Ver. 1.09K or later)
- GX Developer (Ver. 8.88S or later)
4. Wiring
Number of
simultaneously
open connections
allowed
Fixed buffer
communica-
tion
2 connections
MELSOFT
connection +
MC protocol
A total of 2 connections
Trans-
mission
data
storage
memory
Fixed buffer 1023 word 2
E-mail
*2*3
Attached file 2048 word 1
Main text 256 word 1
Number of I/O occupied points 8 points
Power
supply
specifi-
cations
24 V DC
external power supply
240 mA, 24 V DC +20%, -15%,
ripple (p-p) less than 5%
Allowable
Instanta-
neous power
failure time
Operation can be continued upon occurrence of
instantaneous power failure for 1 ms or less.
5 V DC
internal power supply
5 V DC of PLC is not used.
(5 V DC is converted from 24 V DC external
power supply.)
Make sure to observe the power-on timing and
the procedure.
External dimensions 90(H) 55(W) 87(D) [mm]
3.55"(H) 2.17"(W) 3.43"(D) [inches]
MASS (Weight) Approx. 0.3 kg (0.66 lbs)
Number of connectable units to
the main unit 1
Model name Applicability
FX3U Series PLC Ver. 2.21 and later
Only one FX3U-ENET-L unit can be connected in a main unit.
FX3UC Series PLC*1 Ver. 2.21 and later
Only one FX3U-ENET-L unit can be connected in a main unit.
Model name Applicability
FX Configurator-EN-L*1 Ver. 1.00 and later
GX Works2 Ver. 1.09K and later
GX Developer Ver. 8.88S and later
WIRING
PRECAUTIONS
Make sure to cut off all phases of the power supply externally before
attempting wiring work.
Failure to do so may cause electric shock or damage to the product.
WIRING
PRECAUTIONS
Before wiring the unit, confirm that the rated voltage and terminal allocation
of the unit are correct. An incorrect voltage supply and/or incorrect wiring
may cause fire, malfunction, or failure.
Perform class D grounding (grounding resistance: 100or less) to the
grounding terminal on the main unit.
Do not use common grounding with heavy electrical systems.
Prevent cutting or wiring debris from entering the main unit. Failure to do so
cause fire, malfunctions, or failures.
Item Specifications 4.1 Grounding
Wiring and power supply wiring between PLC and FX3U-ENET-L
Example usage of FX3U
电器电子产品有害物质限制使用标识要求」的表示方式
Note: This symbol mark is for China only.
含有有害6物质的名称，含有量，含有部品
本产品中所含有的有害6 物质的名称，含有量，含有部品如下表
所示。
产品中有害物质的名称及含量
本表格依据SJ/T 11364的规定编制。
○:
表示该有害物质在该部件所有均质材料中的含量均在GB/T 26572
规定的限量要求以下。
×: 表示该有害物质至少在该部件的某一均质材料中的含量超出GB/T
26572规定的限量要求。
基于中国标准法的参考规格:GB/T15969.2
部件名称
有害物质
铅
(Pb)
汞
(Hg)
镉
(Cd)
六价铬
(Cr(VI))
多溴联苯
(PBB)
多溴
二苯醚
(PBDE)
可编程
控制器
外壳 ○ ○ ○ ○ ○ ○
印刷基板 × ○ ○ ○ ○ ○
PLCPLCPLC
Shared grounding
(Good condition)
Independent grounding
(Best condition)
Common grounding
(Not allowed)
Other
equipment Other
equipment
Other
equipment
LAN
24+
HUB
FX 3U
ENET-L
24-
Externally power supply for FX 3U -ENET-L
24V DC
D Grounding
(100 Ωor less)
Ethernet
modular jack
(RJ-45)
FX3U-ENET-L
INSTALLATION MANUAL
This manual describes the part names, dimensions, mounting, and specifications
of the product. Before use, read this manual and the manuals of all relevant
products fully to acquire proficiency in handling and operating the product. Make
sure to learn all the product information, safety information, and precautions.
Store this manual in a safe place so that it can be taken out and read whenever
necessary. Always forward it to the end user.
Registration: Ethernet is a trademark of Xerox Corporation.
The company and product name described in this manual are registered
trademarks or the trademarks of their respective companies.
Effective February 2018
Specifications are subject to change without notice.
2009 Mitsubishi Electric Corporation
Manual Number JY997D37801
Revision E
Date February 2018

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.
Warranty
Exclusion of loss in opportunity and secondary loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:
(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.
(2)
Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.
(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.
(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe use
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.



HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Side
A
Side
B
JAPANESE
ENGLISH
JY997D37801E
Side
B
Safety Precautions (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by may
also cause severe injury.
It is important to follow all precautions for personal safety.
Associated Manuals
Indicates that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous
conditions, resulting in medium or slight personal injury
or physical damage.
Manual name Manual No. Description
FX3U-ENET-L
INSTALLATION
MANUAL
JY997D37801 This manual
FX3U-ENET-L
User’s Manual
JY997D38001
MODEL CODE:
09R722
Describes the specifications,
wiring, installation, maintenance,
and operations of the FX3U-
ENET-L.
FX3U Series
HARDWARE
MANUAL
JY997D50301
Briefly describes the I/O
specifications, wiring, and
installation of the FX3U Series
PLC.
FX3U Series
User’s Manual
- Hardware Edition
JY997D16501
MODEL CODE:
09R516
Explains the FX3U Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX3S/FX3G/FX3GC/
FX3U/FX3UC Series
Programming Manual
- Basic & Applied
Instruction Edition
JY997D16601
MODEL CODE:
09R517
Describes PLC programming for
basic/applied instructions and
devices.
FX3UC(D, DS, DSS)
Series
HARDWARE
MANUAL
JY997D50501
Briefly describes the I/O
specifications, wiring, and
installation of the FX3UC Series
PLC.
FX3UC-32MT-LT-2
HARDWARE
MANUAL
JY997D31601
Briefly describes the I/O
specifications, wiring, and
installation of the FX3UC-32MT-
LT-2 PLC.
Only this INSTALLATION MANUAL is supplied with the FX3U-ENET-L.
For more details regarding the FX3U/FX3UC Series hardware, PLC programming
commands, and special function blocks/units, refer to the appropriate manuals.
How to obtain manuals
For product manuals or documents, consult with the Mitsubishi Electric dealer from
who you purchased your product.
How to obtain FX Configurator-EN-L
The parameter setting software, FX Configurator-EN-L is not supplied with this product.
Consult with the Mitsubishi Electric dealer from who you purchased this product
Certification of UL, cUL standards
FX3U-ENET-L units comply with the UL standards (UL, cUL).
UL, cUL File Number: E95239
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Compliance with EC directive (CE Marking)
This note does not guarantee that an entire mechanical module produced in
accordance with the contents of this note will comply with the following standards.
Compliance to EMC directive and LVD directive for the entire mechanical module
should be checked by the user / manufacturer. For more information please consult
with your nearest Mitsubishi product provider.
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Requirement for Compliance with EMC directive
The following products have shown compliance through direct testing (of the identified
standards below) and design analysis (through the creation of a technical construction
file) to the European Directive for Electromagnetic Compatibility (2014/30/EU) when
used as directed by the appropriate documentation.
Attention
This product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX3U series manufactured
from October 1st, 2009 FX3U-ENET-L
Caution for EC Directive
Installation in Enclosure
Programmable logic controllers are open-type devices that must be installed
and used within conductive control cabinets. Please use the programmable
logic controller while installed within a conductive shielded control cabinet.
Please secure the cabinet door to the control cabinet (for conduction).
Installation within a control cabinet greatly affects the safety of the system and
aids in shielding noise from the programmable logic controller.
Control cabinet
- The control cabinet must be conductive.
- Ground the control cabinet with the thickest possible grounding cable.
- To ensure that there is electric contact between the control cabinet and its door,
connect the cabinet and its doors with thick wires.
- In order to suppress the leakage of radio waves, the control cabinet structure
must have minimal openings. Also, wrap the cable holes with a shielding cover or
other shielding devices.
- The gap between the control cabinet and its door must be as small as possible by
attaching EMI gaskets between them.
Manual name Manual No. Description
FX3UC Series
User’s Manual
- Hardware Edition
JY997D28701
MODEL CODE:
09R519
Explains the FX3UC Series PLC
specifications for I/O, wiring,
installation, and maintenance.
FX Configurator-EN-L
operation Manual
JY997D38401
MODEL CODE:
09R929
Describes the operation method of
FX Configurator-EN-L.
Standard Remark
EN61131-2:2007
Programmable controllers
- Equipment requirements
and tests
Compliance with all relevant aspects of the
standard.
EMI
• Radiated Emission
• Conducted Emission
EMS
• Radiated electromagnetic field
• Fast transient burst
• Electrostatic discharge
• High-energy surge
• Voltage drops and interruptions
• Conducted RF
• Power frequency magnetic field
* These wires are used to improve the conductivity between the door and control
cabinet.
Notes for compliance with EN61131-2:2007
General notes on the use of the power supply cable.
- The FX3U-ENET-L unit requires that the cable used for power supply is 30m or
less.
- When the cable used for power supply exceeds 30m, a noise filter (Ex. TDK-
Lambda MBS1205-22 or similar) should be placed on the 24V DC power cabling
as close (within 500mm) to the FX3U-ENET-L termination points as possible,
refer to following figure.
1. Outline
FX3U-ENET-L is an Ethernet unit for the FX3U/FX3UC Series PLC that is compliant with
100BASE-TX/10BASE-T and has the features as follows.
1) Data and programs within the PLC can be sent and received via Ethernet by
using GX Works2 Ver. 1.09K or later/GX Developer Ver.8.88S or later.*1
2) Communication between PLCs or with a general Ethernet device is possible by
fixed buffer communication. (TCP/IP or UDP/IP)*1
3) Users can develop custom software to communicate with the PLC by using MC
(MELSEC Communication) protocol (A-compatible 1E frame subset, for details,
refer to user's manual). (TCP/IP or UDP/IP)*1
4) E-mail can be sent. (SMTP protocol)
5) The FX3U-ENET-L parameters can be set easily using FX Configurator-EN-L.
6) The diagnostic functions of FX Configurator-EN-L enables easy diagnostics and
troubleshooting of the FX3U-ENET-L.
*1 It is necessary to set up the open system by configuring open settings in
advance.
1.1 Incorporated Items
1.2 External Dimensions and Part Names
MASS(Weigth): Approx. 0.3 kg (0.66 lbs) DIN rail width: 35 mm (1.38”)
[1] Direct mounting hole:2 holes of  4.5 mm (0.18”)
Used when
FX3U-ENET-L is directly mounted.
Not used when DIN rail is mounted.
[2] DIN rail mounting groove [3] DIN rail mounting hook
[4] Extension cable [5] RUN LED
[6] INIT. LED [7] 100M LED
[8] SD LED [9] RD LED
[10] ERR. LED [11] COM.ERR. LED
[12] POWER LED [13] C1 to C4 LEDs
[14] 10BASE-T/100BASE-TX connector (RJ45)
[15] Top cover
[16] External 24VDC terminal (M3 terminal block screw)
[17] Extension connector
Included Item
FX3U-ENET-L 1 unit
Label for indication of special function unit/block number 1 sheet
Dust proof protection sheet 1 sheet
Installation Manual (Japanese version, English version) 1 manual each
Shielding cover
Shielded cable
Wires* EMI gasket
Exceeding 30m
24V DC
24V DC power
supply
500mm or less Noise
Filter
FX 3U -ENET-L
90(3.55")
55(2.17")
80(3.15")
9(0.36")
87(3.43")
4(0.16") Top cover is
removed
Unit: mm (inches)
[1] [4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[2]
[3] [13]
[16]
[17]
2-4.5 mounting holes
[14]
[15]
Indications of LEDs
LED
Indication ( : Off, : On)
RUN : Normal operation
: Abnormal operation
INIT. : Initial processing normal completion
: Initial processing not performed
100M : 100Mbps
: 10Mbps/When not connected
SD : Data being sent
: Data not being sent
RD : Data being received
: Data not being received
ERR. : Abnormal setting display*
: Normal setting display
COM. ERR. : Abnormal communication display
: Normal communication display
POWER : Power on
: Power off
C1 to C4 : TCP/IP - Connection established
UDP - Open
: TCP/IP - Connection not established
UDP - Closed
*The ERR LED illuminates in the following cases:
- When a parameter setting error occurs in the Ethernet unit
- When an operational error occurs in the PLC CPU
- When an error is found in the Ethernet unit (H/W error)
Pin Configuration
The pin configuration of FX3U-ENET-L RJ45 type modular jack (for category 5 or
category 3) is as follows:
Cables to be used
2. Installation
Pin No. Signal Direction Contents
1 TD+ Out + side of sending data
2TDOut side of sending data
3 RD+ In + side of receiving data
4 Not used -
5 Not used -
6RDIn side of receiving data
7 Not used -
8 Not used -
For 10BASE-T
Category 5e, shielded twisted-pair cable
Category 5, shielded twisted-pair cable
Category 3, shielded twisted-pair cable
For 100BASE-TX Category 5e, shielded twisted-pair cable
Category 5, shielded twisted-pair cable
INSTALLATION
PRECAUTIONS
Make sure to cut off all phases of the power supply externally before
attempting installation work.
Failure to do so may cause electric shock or damage to the product.
Before attaching or replacing the main unit or extension unit, externally cut
off all phases of the power supply. Failure to do so may cause malfunctions
or misoperations.
INSTALLATION
PRECAUTIONS
Use the product within the generic environment specifications described in
PLC main unit manual (Hardware Edition).
Never use the product in areas with excessive dust, oily smoke, conductive
dusts, corrosive gas (salt air, Cl2, H2S, SO2or NO2), flammable gas,
vibration or impacts, or expose it to high temperature, condensation, or rain
and wind. If the product is used in such conditions, fire, malfunctions,
deterioration or damage may occur.
When tightening the terminal screws, stay within the specified torque range.
When tightened insufficiently, short-circuit or failure may occur. When
tightened too much, the screws or the unit may be damaged, causing the
unit disposal, short-circuit, or failure.
Do not touch the conductive part or electric parts of this unit directly.
Doing so may cause failure or malfunctions.
RUN
INIT.
100M
SD
RD
ERR.
COM.ERR.
POWER
C1
C2
C3
C4
81
2.1 Mounting
The FX3U-ENET-L can be mounted directly using screws or on a DIN rail
(DIN46227).
2.1.1 Direct Mounting
The FX3U-ENET-L can be mounted with M4 screws by using the direct mounting
holes.
A space of 1 to 2 mm (0.04” to 0.08”) between each unit is necessary.
2.1.2 DIN Rail Mounting
The FX3U-ENET-L can be mounted on a DIN rail (DIN46227, 35 mm width).
1) Fit the upper edge of the DIN rail mounting
groove (fig. A) onto the DIN rail.
2) Push the unit onto the DIN rail.
2.1.3 Procedure for connecting with the FX3U Series PLC
When connecting to an FX3U:
Before connections, turn off the power to the
PLC.
1) Remove the extension device connector
cover of the main unit.
2) Fold and insert the extension cable in the
corresponding connector as shown to the
right.
3) Reattach the extension device connector
cover on the main unit.
When connecting to an FX3UC:
When connecting the FX3U-ENET-L,
either the FX3UC-1PS-5V or FX2NC-
CNV-IF is required.
1) The connector cover (A) of the
FX3UC-1PS-5V is removed as
shown in the figure to the right.
The FX2NC-CNV-IF does not have
a connector cover.
2) Connect the extension cable as
shown to the right.
3. Specification
For details on specifications, refer to the following manual.
Refer to the FX3U-ENET-L User's Manual.
Install the unit on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board,
thereby causing nonconformities.
Install the product securely using a DIN rail or mounting screws.
When drilling screw holes or wiring, make sure that cutting or wire debris
dose not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation port when
installation work is completed.
Failure to do so may cause fire, equipment failures or malfunctions.
Connect extension cables securely to their designated connectors.
Loose connections may cause malfunctions.
DESIGN
PRECAUTIONS
Make sure to include the following safety circuits outside the PLC to ensure
safe system operation even during external power supply problems or PLC
failure.
Otherwise, malfunctions may cause serious accidents.
1)Most importantly, have the following: an emergency stop circuit, a
protection circuit, an interlock circuit for opposite movements (such as
normal vs. reverse rotation), and an interlock circuit (to prevent damage
to the equipment at the upper and lower positioning limits).
2)Note that when the PLC main unit detects an error such as a watchdog
timer error, during self diagnosis, all outputs are turned off. Also, when an
error that cannot be detected by the PLC main unit occurs in an input/
output control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe
machinery operation in such cases.
INSTALLATION
PRECAUTIONS
1)
2)
A
1)
2)
3)
FX3UC-1PS-5V or
FX2NC-CNV-IF
Extension cable on
the right side
FX3UC-1PS-5V
Connector cover
(A)
Items other than the following are equivalent to those of the PLC main unit.
For general specifications, refer to the manual of the PLC main unit.
Refer to the FX3U Series User's Manual - Hardware Edition.
Refer to the FX3UC Series User's Manual - Hardware Edition.
DESIGN
PRECAUTIONS
Make sure to observe the following precautions in order to prevent any damage to
the machinery or accidents due to abnormal data written to the PLC under the
influence of noise:
1)Do not bundle the main circuit line together with or lay it close to the main
circuit, high-voltage line or load line.
Otherwise, noise disturbance and/or surge induction are likey to take place.
As a guideline, lay the control line at least 100mm (3.94") or more away from
the main circuit or high-voltage lines.
2)Ground the shield wire or shield of a shielded cable. However, do not ground
them at the same point as the high-voltage lines.
Install module so that excessive force will not be applied to the unit or cables.
Failure to do so may result in wire damage/breakage or PLC failure.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not touch any terminals or connector while the PLC's power is on.
Doing so may cause electrical shock or malfunctions.
Before cleaning or retightening screws, externally cut off all phases of the power
supply.
Failure to do so may cause malfunction or failure of this unit.
When the screws are tightened insufficiently, they may fall out and cause a short-
circuit or malfunction. When tightened too much, the screws or the unit may be
damaged, resulting in short-circuit, or malfunction.
When controlling the PLC (especially when changing data, the program or
changing the operating conditions) during operation, ensure that it is safe to do
so.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not disassemble or modify the unit.
Doing so may cause fire, equipment failures, or malfunctions.
The unit case is made of resin. If dropped or subjected to strong impact, the unit
may be damaged.
When this unit is installed or removed from the panel, make sure to externally cut
off all phases of the power supply. Failure to do so may cause malfunction or
failure of this unit.
DISPOSAL
PRECAUTIONS
Please contact a certified electronic waste disposal company for the
environmentally safe recycling and disposal of your device.
TRANSPORTATION AND
STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts larger
than those specified in the general specifications by using dedicated packaging
boxes and shock-absorbing palettes.
Failure to do so may cause failures in the product.
After transportation, verify operation of the product and check for damage of the
mounting part, etc.
Item Specifications
General
specifi-
cation
Ambient temperature 0 to 55C (32 to 131F) when operating and -20
to 75C (-4 to 167F) when stored
Dielectric withstand
voltage 500 V AC for one minute
Between all
terminals and the
ground terminal
Insulation resistance
5 Mor higher by 500 V
DC insulation resistance
tester
Trans-
mission
specifi-
cations
Data transmission
speed 100 Mbps 10 Mbps
Communication
method Full-duplex/Half-duplex
Transmission method Base band
Maximum segment
length 100 m (328’1”)*1
Maximum number of
nodes/connection
Cascade connection
Maximum 2 stages
Cascade connection
Maximum 4 stages
*1 Length between a hub and a node.
*2 Refer to the FX3U-ENET-L User's Manual of e-mail sending function
specifications.
*3 It is not possible to send an attached file and main text simultaneously.
3.1 Applicable PLC
The version number can be checked by reading the last three digits of device D8001/
D8101.
*1 An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the FX3U-ENET-L
with the FX3UC PLC.
3.2 Related software
*1 To use FX Configurator-EN-L, either of the following software should be installed.
- GX Works2(Ver. 1.09K or later)
- GX Developer (Ver. 8.88S or later)
4. Wiring
Number of
simultaneously
open connections
allowed
Fixed buffer
communica-
tion
2 connections
MELSOFT
connection +
MC protocol
A total of 2 connections
Trans-
mission
data
storage
memory
Fixed buffer 1023 word 2
E-mail
*2*3
Attached file 2048 word 1
Main text 256 word 1
Number of I/O occupied points 8 points
Power
supply
specifi-
cations
24 V DC
external power supply
240 mA, 24 V DC +20%, -15%,
ripple (p-p) less than 5%
Allowable
Instanta-
neous power
failure time
Operation can be continued upon occurrence of
instantaneous power failure for 1 ms or less.
5 V DC
internal power supply
5 V DC of PLC is not used.
(5 V DC is converted from 24 V DC external
power supply.)
Make sure to observe the power-on timing and
the procedure.
External dimensions 90(H) 55(W) 87(D) [mm]
3.55"(H) 2.17"(W) 3.43"(D) [inches]
MASS (Weight) Approx. 0.3 kg (0.66 lbs)
Number of connectable units to
the main unit 1
Model name Applicability
FX3U Series PLC Ver. 2.21 and later
Only one FX3U-ENET-L unit can be connected in a main unit.
FX3UC Series PLC*1 Ver. 2.21 and later
Only one FX3U-ENET-L unit can be connected in a main unit.
Model name Applicability
FX Configurator-EN-L*1 Ver. 1.00 and later
GX Works2 Ver. 1.09K and later
GX Developer Ver. 8.88S and later
WIRING
PRECAUTIONS
Make sure to cut off all phases of the power supply externally before
attempting wiring work.
Failure to do so may cause electric shock or damage to the product.
WIRING
PRECAUTIONS
Before wiring the unit, confirm that the rated voltage and terminal allocation
of the unit are correct. An incorrect voltage supply and/or incorrect wiring
may cause fire, malfunction, or failure.
Perform class D grounding (grounding resistance: 100or less) to the
grounding terminal on the main unit.
Do not use common grounding with heavy electrical systems.
Prevent cutting or wiring debris from entering the main unit. Failure to do so
cause fire, malfunctions, or failures.
Item Specifications 4.1 Grounding
Wiring and power supply wiring between PLC and FX3U-ENET-L
Example usage of FX3U
电器电子产品有害物质限制使用标识要求」的表示方式
Note: This symbol mark is for China only.
含有有害6物质的名称，含有量，含有部品
本产品中所含有的有害6 物质的名称，含有量，含有部品如下表
所示。
产品中有害物质的名称及含量
本表格依据SJ/T 11364的规定编制。
○:
表示该有害物质在该部件所有均质材料中的含量均在GB/T 26572
规定的限量要求以下。
×: 表示该有害物质至少在该部件的某一均质材料中的含量超出GB/T
26572规定的限量要求。
基于中国标准法的参考规格:GB/T15969.2
部件名称
有害物质
铅
(Pb)
汞
(Hg)
镉
(Cd)
六价铬
(Cr(VI))
多溴联苯
(PBB)
多溴
二苯醚
(PBDE)
可编程
控制器
外壳 ○ ○ ○ ○ ○ ○
印刷基板 × ○ ○ ○ ○ ○
PLCPLCPLC
Shared grounding
(Good condition)
Independent grounding
(Best condition)
Common grounding
(Not allowed)
Other
equipment Other
equipment
Other
equipment
LAN
24+
HUB
FX 3U
ENET-L
24-
Externally power supply for FX 3U -ENET-L
24V DC
D Grounding
(100 Ωor less)
Ethernet
modular jack
(RJ-45)
FX3U-ENET-L
INSTALLATION MANUAL
This manual describes the part names, dimensions, mounting, and specifications
of the product. Before use, read this manual and the manuals of all relevant
products fully to acquire proficiency in handling and operating the product. Make
sure to learn all the product information, safety information, and precautions.
Store this manual in a safe place so that it can be taken out and read whenever
necessary. Always forward it to the end user.
Registration: Ethernet is a trademark of Xerox Corporation.
The company and product name described in this manual are registered
trademarks or the trademarks of their respective companies.
Effective February 2018
Specifications are subject to change without notice.
2009 Mitsubishi Electric Corporation
Manual Number JY997D37801
Revision E
Date February 2018