Mitsubishi Electric FX3G SERIES User manual

FX3G SERIES PROGRAMMABLE CONTROLLERS
USER'S MANUAL
Hardware Edition
Main Unit
AC Power Type
FX3G-MR/ES
FX3G-MT/ES
FX3G-MT/ESS
DC Power Type
FX3G-MR/DS
FX3G-MT/DS
FX3G-MT/DSS
Input/Output Powered
Extension Unit
FX2N-E-
Input/Output Extension Block
FX2N-8E-
FX2N-16E-
Display Module
FX3G-5DM
Memory Cassette
FX3G-EEPROM-32L

(1)
Before installation, operation, maintenance or inspection of this product, thoroughly read through and
understand this manual and all of the associated manuals. Also, take care to handle the module properly and
safely.
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.
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. 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.
1. DESIGN PRECAUTIONS
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.
Reference
• Make sure to have the following safety circuits outside of 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 CPU 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 CPU 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 a case.
3) Note that the output current of the 24V DC service power supply varies depending on the model and the
absence/presence of extension blocks. If an overload occurs, the voltage automatically drops, inputs in the PLC
are disabled, and all outputs are turned off.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
4) Note that when an error occurs in a relay, triac or transistor output device, the output could be held either on or
off.
For output signals that may lead to serious accidents, external circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
• 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.
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Reference
• Do not bundle the control line together with or lay it close to the main circuit or power line. As a guideline, lay the
control line at least 100mm (3.94") or more away from the main circuit or power line.
Noise may cause malfunctions.
• Install module so that excessive force will not be applied to peripheral device connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
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Safety Precautions
(Read these precautions before use.)

Safety Precautions
(Read these precautions before use.)
(2)
2. INSTALLATION PRECAUTIONS
3. WIRING PRECAUTIONS
Reference
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
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Reference
• Use the product within the generic environment specifications described in section 4.1 of this manual.
Never use the product in areas with excessive dust, oily smoke, conductive dusts, corrosive gas (salt air, Cl2, H2S,
SO2 or 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, electric shock, fire, malfunctions, deterioration or damage may occur.
• Do not touch the conductive parts of the product directly.
Doing so may cause device failures or malfunctions.
• Install the product securely using a DIN rail or mounting screws.
• Install the product on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board, thereby causing nonconformities.
• Make sure to affix the expansion board with tapping screws.
Tightening torque should follow the specifications in the manual.
If the screws are tightened outside of the specified torque range, poor connections may cause malfunctions.
• When drilling screw holes or wiring, make sure that cutting and wiring debris do not enter the ventilation slits of the
PLC.
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 the extension cables, peripheral device cables, input/output cables and battery connecting cable securely
to their designated connectors.
Loose connections may cause malfunctions.
• Connect the display module, memory cassette, and expansion board securely to their designated connectors.
Loose connections may cause malfunctions.
• Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause device failures or malfunctions.
- Peripheral devices, display modules, expansion boards and special adapters
- Extension units/blocks and FX Series terminal blocks
- Battery and memory cassette
• Connect the memory cassette securely to the appropriate connector.
Loose connections may cause malfunctions.
Installing the cassette in a raised or tilted posture can also cause malfunctions.
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Reference
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
• Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation
after installation or wiring work.
Failure to do so may cause electric shock.
• The temperature rating of the cable should be 80 C or more.
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Terminal block DIN rail only
Main unit, FX2N Series I/O extension unit/block, FX2N/FX3U Series special
function block, and special adapter DIN rail or direct mounting

Safety Precautions
(Read these precautions before use.)
(3)
4. STARTUP AND MAINTENANCE PRECAUTIONS
Reference
• Do not supply power to the [24+] and [24V] terminals (24V DC service power supply) on the main unit or extension
units.
Doing so may cause damage to the product.
• Perform class D grounding (grounding resistance: 100 or less) to the grounding terminal on the main unit and
extension units with a wire 2 mm2 or thicker.
Do not use common grounding with heavy electrical systems (refer to section 9.3).
• Connect the AC power supply wiring to the dedicated terminals described in this manual.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
• Connect the DC power supply wiring to the dedicated terminals described in this manual.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
• Do not wire vacant terminals externally.
Doing so may damage the product.
• When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Make sure to properly wire the FX3G Series main unit and FX2N/FX3U Series extension equipment in accordance
with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
- Tighten the screws using a Phillips-head screwdriver No.2 (shaft diameter 6mm (0.24”) or less). Make sure that
the screwdriver does not touch the partition part of the terminal block.
• Make sure to properly wire to the terminal block (European type) in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
- Twist the end of strand wire and make sure that there are no loose wires.
- Do not solder-plate the electric wire ends.
- Do not connect more than the specified number of wires or electric wires of unspecified size.
- Affix the electric wires so that neither the terminal block nor the connected parts are directly stressed.
• Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
- Tighten the screws using a Phillips-head screwdriver No.2 (shaft diameter 6mm (0.24”) or less). Make sure that
the screwdriver does not touch the partition part of the terminal block.
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Reference
• Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
• Before cleaning or retightening terminals, cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
• Use the battery for memory backup correctly in conformance to this manual.
- Use the battery only for the specified purpose.
- Connect the battery correctly.
- Do not charge, disassemble, heat, put in fire, short-circuit, connect reversely, weld, swallow or burn the battery,
or apply excessive forces (vibration, impact, drop, etc.) to the battery.
- Do not store or use the battery at high temperatures or expose to direct sunlight.
- Do not expose to water, bring near fire or touch liquid leakage or other contents directly.
- Incorrect handling of the battery may cause heat excessive generation, bursting, ignition, liquid leakage or
deformation, and lead to injury, fire or failures and malfunctions of facilities and other equipment.
- When replacing the battery, make sure to use our specified product (FX3U-32BL).
- When a battery error occurs ("ALM" LED is lit in red), follow the description in this manual.
• Before modifying or disrupting the program in operation or running the PLC, carefully read through this manual and
the associated manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause accidents.
• Do not change the program in the PLC from two or more peripheral equipment devices at the same time. (i.e. from
a programming tool and a GOT)
Doing so may cause destruction or malfunction of the PLC program.
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Safety Precautions
(Read these precautions before use.)
(4)
5. DISPOSAL PRECAUTIONS
6. TRANSPORTATION AND STORAGE PRECAUTIONS
Reference
• Turn off the power to the PLC before attaching or detaching the memory cassette. If the memory cassette is
attached or detached while the PLC’s power is on, the data in the memory may be destroyed, or the memory
cassette may be damaged.
• Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric representative.
• Turn off the power to the PLC before connecting or disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
• Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause equipment failures or malfunctions.
- Peripheral devices, display module, expansion boards, and special adapters
- Extension units/blocks and FX Series terminal blocks
- Battery and memory cassette
• Do not use the chemicals for cleaning.
• If there is the possibility of touching the PLC inside a control panel in maintenance, make sure to discharge to avoid
the influence of static electricity.
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Reference
• Please contact a certified electronic waste disposal company for the environmentally safe recycling and disposal of
your device.
When disposing of batteries, separate them from other waste according to local regulations.
(For details of the Battery Directive in EU countries, refer to Appendix E)
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Reference
• When transporting the FX3G Series PLC incorporating the optional battery, turn on the PLC before shipment,
confirm that the battery mode is set using a parameter and the ALM LED is OFF, and check the battery life.
If the PLC is transported with the ALM LED on or the battery exhausted, the battery-backed data may be unstable
during transportation.
• The PLC is a precision instrument. During transportation, avoid impacts larger than those specified in the general
specifications (section 4.1) by using dedicated packaging boxes and shock-absorbing palettes. Failure to do so may
cause failures in the PLC.
After transportation, verify operation of the PLC and check for damage of the mounting part, etc.
• When transporting lithium batteries, follow required transportation regulations.
(For details of the regulated products, refer to Appendix D)
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1
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Foreword
This manual contains text, diagrams and explanations which will guide the reader in the correct installation,
safe use and operation of the FX3G Series Programmable Controllers and should be read and understood
before attempting to install or use the unit.
And, store this manual in a safe place so that you can take it out and read it whenever necessary. Always
forward it to the end user.
© 2008 MITSUBISHI ELECTRIC CORPORATION
Manual number JY997D31301
Manual revision N
Date 1/2020
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.

2
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Outline Precautions
• This manual provides information for the use of the FX3G Series Programmable Controllers. The manual
has been written to be used by trained and competent personnel. The definition of such a person or
persons is as follows;
1) Any engineer who is responsible for the planning, design and construction of automatic equipment
using the product associated with this manual should be of a competent nature, trained and qualified
to the local and national standards required to fulfill that role. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.
2) Any commissioning or service engineer must be of a competent nature, trained and qualified to the
local and national standards required to fulfill that job. These engineers should also be trained in the
use and maintenance of the completed product. This includes being completely familiar with all
associated documentation for the said product. All maintenance should be carried out in accordance
with established safety practices.
3) All operators of the completed equipment should be trained to use that product in a safe and
coordinated manner in compliance to established safety practices. The operators should also be
familiar with documentation which is connected with the actual operation of the completed equipment.
Note: The term 'completed equipment' refers to a third party constructed device which contains or uses
the product associated with this manual
• 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.
• When combining this product with other products, please confirm the standard and the code, or regulations
with which the user should follow. Moreover, please confirm the compatibility of this product to the system,
machine, and apparatus with which a user is using.
• If in doubt at any stage during the installation of the product, always consult a professional electrical
engineer who is qualified and trained to the local and national standards. If in doubt about the operation or
use, please consult your local Mitsubishi Electric representative.
• Since the examples indicated by this manual, technical bulletin, catalog, etc. are used as a reference,
please use it after confirming the function and safety of the equipment and system. Mitsubishi Electric will
accept no responsibility for actual use of the product based on these illustrative examples.
• This manual content, specification etc. may be changed without a notice for improvement.
• The information in this manual has been carefully checked and is believed to be accurate; however, if you
have noticed a doubtful point, a doubtful error, etc., please contact your local Mitsubishi Electric
representative.
Registration
Anywire and AnyWireASLINK are either registered trademarks or trademarks of Anywire Corporation.
The company names, system names and product names mentioned in this manual are either registered
trademarks or trademarks of their respective companies.
In some cases, trademark symbols such as '' or '' are not specified in this manual.

3
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
Table of Contents
SAFETY PRECAUTIONS .................................................................................................. (1)
Standards 14
Certification of UL, cUL standards ..................................................................................................... 14
Compliance with EC directive (CE Marking) ...................................................................................... 14
Requirement for Compliance with EMC directive.......................................................................... 14
Requirement for Compliance with LVD directive........................................................................... 17
Caution for compliance with EC Directive .....................................................................................18
1. Introduction 19
1.1 Introduction of Manuals................................................................................................................. 19
1.1.1 Classification of major components in this manual........................................................................ 19
1.1.2 Manual organization and position of this manual .......................................................................... 21
1.1.3 List of manuals .............................................................................................................................. 22
1.2 Generic Names and Abbreviations Used in Manuals.................................................................... 27
2. Features and Part Names 29
2.1 Major Features.............................................................................................................................. 29
2.2 Names and Functions of Parts...................................................................................................... 31
2.2.1 Front Panel.................................................................................................................................... 31
2.2.2 Sides.............................................................................................................................................. 33
3. Introduction of Products 34
3.1 List of Products and Interpretation of Model Names..................................................................... 34
3.1.1 Main units ...................................................................................................................................... 35
3.1.2 Input/output powered extension units............................................................................................ 36
3.1.3 Input/output extension blocks........................................................................................................ 37
3.1.4 Special function blocks.................................................................................................................. 38
3.1.5 Display module.............................................................................................................................. 38
3.1.6 Expansion boards.......................................................................................................................... 38
3.1.7 Connector conversion adapter ...................................................................................................... 39
3.1.8 Special adapters............................................................................................................................ 39
3.1.9 Extension power supply unit.......................................................................................................... 39
3.1.10 Extension cables and connector conversion adapter/ Battery/Memory cassettes ...................... 39
3.1.11 FX Series terminal blocks (cables and connectors) .................................................................... 40
3.1.12 Remote I/O .................................................................................................................................. 40
3.1.13 Power supply unit ........................................................................................................................ 40
3.2 Connector Types and Cables for Program Communication.......................................................... 41
3.2.1 Programming tool .......................................................................................................................... 42
3.2.2 Communication cables .................................................................................................................. 42
3.2.3 Converters and interface ............................................................................................................... 42
3.2.4 The accessing path to the FX3G from CC-Link ............................................................................. 43
4. Specifications, External Dimensions and Terminal Layout (Main Units) 44
4.1 Generic Specifications .................................................................................................................. 44
4.1.1 Dielectric withstand voltage test and insulation resistance test..................................................... 45
4.2 Power Supply Specifications......................................................................................................... 46
4.2.1 AC Power Supply Type ................................................................................................................. 46
4.2.2 DC Power Supply Type ................................................................................................................. 46

4
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
4.3 Input Specifications....................................................................................................................... 47
4.3.1 24V DC Input (sink/source) ........................................................................................................... 47
4.4 Output Specifications .................................................................................................................... 48
4.4.1 Relay output .................................................................................................................................. 48
4.4.2 Transistor output............................................................................................................................ 49
4.5 Performance Specifications .......................................................................................................... 50
4.6 External Dimensions (Weight/Accessories/Installation) ................................................................ 52
4.6.1 Main units ...................................................................................................................................... 52
4.7 Terminal Layout ............................................................................................................................ 53
4.7.1 Interpretation of terminal block layout............................................................................................ 53
4.7.2 FX3G-14M.................................................................................................................................. 54
4.7.3 FX3G-24M.................................................................................................................................. 54
4.7.4 FX3G-40M.................................................................................................................................. 55
4.7.5 FX3G-60M.................................................................................................................................. 55
5. Version Information and Peripheral Equipment Connectability 56
5.1 Version Information ....................................................................................................................... 56
5.1.1 Manufacturer's serial number check method................................................................................. 56
5.1.2 Version check method................................................................................................................... 57
5.1.3 Version upgrade history................................................................................................................. 57
5.2 Programming Tool Applicability..................................................................................................... 58
5.2.1 Applicable versions of programming tool....................................................................................... 58
5.2.2 In the case of programming tool (version) not applicable.............................................................. 59
5.2.3 Program transfer speed and programming tools........................................................................... 59
5.2.4 Cautions on connecting peripheral equipment by way of expansion board or special adapter..... 60
5.2.5 Cautions on write during RUN ....................................................................................................... 60
5.3 Use of (Built-in USB) Programming Port....................................................................................... 63
5.3.1 Installation of USB driver............................................................................................................... 63
5.3.2 Setting in GX Developer................................................................................................................ 63
5.4 Cautions on using transparent function by way of USB in GOT1000 Series ................................ 64
5.5 Cautions on using transparent port (2-port) function of GOT-F900 Series ................................... 65
5.6 Other Peripheral Equipment Applicability...................................................................................... 66
5.6.1 Other Peripheral Equipment Applicability...................................................................................... 66
6. Examination of System Configuration 67
6.1 Configuration of a Whole System.................................................................................................. 67
6.1.1 Expansion board/connector conversion adapter/memory cassette/display module configuration ... 68
6.2 Rules of System Configuration...................................................................................................... 70
6.3 Number of Input/Output Points and Maximum Number of Input/Output Points ........................... 72
6.3.1 Calculation of number of input/output points ................................................................................. 72
6.3.2 Maximum number of input/output points when CC-Link master is used ....................................... 74
6.3.3 Maximum number of input/output points when AnyWireASLINK master is used.......................... 75
6.4 Number of Connected Extension Devices (Including Extension Cable) ....................................... 76
6.4.1 Number of connectable expansion boards and special adapters.................................................. 76
6.4.2 Input/output powered extension units............................................................................................ 76
6.4.3 Extension Power Supply Unit ........................................................................................................ 76
6.4.4 Special function blocks.................................................................................................................. 76
6.4.5 Extension cable ............................................................................................................................. 76
6.5 Expansion of Main Unit ................................................................................................................. 77
6.5.1 When adding input/output extension blocks using the 24V DC service power supply of
the main unit.................................................................................................................................. 78
6.5.2 Selection example 1 using the 24V DC service power supply of the main unit............................. 80
6.5.3 Selection example 2 using the 24V DC service power supply of the main unit............................. 81
6.6 Expansion of FX2N Series I/O Powered Extension Unit ............................................................... 82
6.6.1 Quick reference matrix (when only input/output devices are added)............................................. 82
6.6.2 When special extension devices are also added (calculation of current consumption)................. 85
6.7 Expansion of Extension Power Supply Unit (FX3U-1PSU-5V)...................................................... 87

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
6.8 Number of Input/Output (Occupied) Points and Current Consumption......................................... 89
6.8.1 [A] Main units................................................................................................................................. 89
6.8.2 [B] Input/output powered extension units/blocks ........................................................................... 90
6.8.3 [C] Special function devices .......................................................................................................... 91
6.8.4 [D] Extension Power Supply Unit................................................................................................... 91
7. Assignment of Input/Output Numbers and Unit Numbers 92
7.1 Assignment of Input/Output Numbers (X/Y)..................................................................................92
7.1.1 Concept of assigning ..................................................................................................................... 92
7.1.2 Example of assigning .................................................................................................................... 93
7.1.3 Application of I/O number label ..................................................................................................... 93
7.2 Unit Numbers of Special Function Blocks ..................................................................................... 94
7.2.1 Concept of assigning ..................................................................................................................... 94
7.2.2 Example of assigning .................................................................................................................... 94
7.2.3 Application of unit number labels................................................................................................... 95
7.3 Assignment of Communication Channels ..................................................................................... 96
7.3.1 Assignment of communication channels ....................................................................................... 96
7.4 "Station No." Label of FX3G-485-BD............................................................................................. 97
7.5 "Station No." Label of FX3G-485-BD-RJ ....................................................................................... 97
7.6 Trimmer Layout Label of FX3G-8AV-BD ....................................................................................... 98
8. Installation In Enclosure 99
8.1 Installation location...................................................................................................................... 102
8.1.1 Installation location in enclosure.................................................................................................. 102
8.1.2 Spaces in enclosure .................................................................................................................... 103
8.2 Layout in Enclosure..................................................................................................................... 103
8.2.1 1-stage layout.............................................................................................................................. 103
8.2.2 2-stage layout.............................................................................................................................. 104
8.3 Examination for Installing Method in Enclosure .......................................................................... 105
8.3.1 Installing methods........................................................................................................................ 105
8.3.2 Cautions on examining installing method .................................................................................... 105
8.3.3 Examples of installation............................................................................................................... 105
8.4 Procedures for Installing on and Detaching from DIN Rail.......................................................... 107
8.4.1 Preparation for installation........................................................................................................... 107
8.4.2 Installation of main unit................................................................................................................ 108
8.4.3 Installation of input/output powered extension unit/block and special function block.................. 109
8.4.4 Removal of main unit................................................................................................................... 110
8.5 Procedures for Installing Directly (with M4 Screws).................................................................... 111
8.5.1 Hole pitches for direct mounting .................................................................................................. 111
8.5.2 Example of mounting hole pitches............................................................................................... 113
8.5.3 Installation of main unit................................................................................................................ 114
8.5.4 Installation of input/output powered extension unit/block and special function block.................. 114
8.6 Connecting Methods for Main Unit and Extension Devices ........................................................ 115
8.6.1 Connection of extension devices................................................................................................. 115
8.6.2 Connecting method A - connection of expansion board.............................................................. 116
8.6.3 Connecting method B - connection of connector conversion adapter ......................................... 117
8.6.4 Connecting method C - connection of special adapter................................................................ 119
8.6.5 Connecting method D - connection of powered extension units/blocks to main unit................... 119
8.6.6 Connecting method E - connection of powered extension units/blocks ...................................... 120
8.6.7 Connecting method F - connection of extension cable and FX2N-CNV-BC................................ 120
8.6.8 Connecting method G - connection of input/output powered extension unit ............................... 121
8.6.9 Connecting method H - connection of extension block to input/output powered extension unit ... 121
9. Preparation for Wiring and Power Supply Wiring Procedures 122
9.1 Preparation for Wiring ................................................................................................................. 124
9.1.1 Wiring procedures ....................................................................................................................... 124
9.1.2 Removal and installation of quick-release terminal block............................................................ 124

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
9.2 Cable Connecting Procedures .................................................................................................... 125
9.2.1 Input/output terminal block (power supply and input/output wiring)............................................. 125
9.2.2 Input/output connectors............................................................................................................... 128
9.2.3 Terminal block for Europe [expansion board and special adapters]............................................ 129
9.2.4 Grounding terminal of the FX3G-485-BD-RJ ............................................................................... 130
9.2.5 Grounding terminal of the FX3U-ENET-ADP............................................................................... 131
9.3 Grounding ................................................................................................................................... 132
9.4 Examples of External Wiring [AC Power Supply Type]............................................................... 133
9.4.1 Example of input/output wiring with 24V DC service power supply............................................. 133
9.4.2 Example of sink input [-common] wiring...................................................................................... 134
9.4.3 Example of source input [+common] wiring................................................................................. 135
9.4.4 An external wiring example for the extension power supply unit (sink input [-common]) ............ 136
9.4.5 An external wiring example for the extension power supply unit (source input [+common]) ....... 137
9.5 Examples of External Wiring [DC Power Supply Type]............................................................... 138
9.5.1 Example of sink input [-common] wiring...................................................................................... 138
9.5.2 Example of source input [+common] wiring................................................................................. 139
10. Input Wiring Procedures 140
10.1 Before Starting Input Wiring...................................................................................................... 142
10.1.1 Sink and source input ................................................................................................................ 142
10.2 24V DC input (Sink and source input type) ............................................................................... 144
10.2.1 Handling of 24V DC input.......................................................................................................... 144
10.2.2 Instructions for connecting input devices................................................................................... 145
10.2.3 Examples of external wiring (sink input) [AC Power Supply Type]............................................ 147
10.2.4 Examples of external wiring (source input) [AC Power Supply Type] ....................................... 149
10.2.5 Examples of external wiring (sink input) [DC Power Supply Type]............................................ 150
10.2.6 Examples of external wiring (source input) [DC Power Supply Type] ....................................... 152
10.3 100V AC Input........................................................................................................................... 153
10.3.1 Input specifications .................................................................................................................... 153
10.3.2 Handling of 100V AC Input........................................................................................................ 153
10.3.3 Examples of external wiring (100V AC input) ............................................................................ 154
10.4 Input Interruption (I00 to I50) .............................................................................................. 155
10.4.1 Allocation of pointers to input numbers (input signal ON/OFF duration) ................................... 155
10.4.2 Cautions for input interruption ................................................................................................... 155
10.4.3 Examples of external wiring....................................................................................................... 156
10.5 Pulse Catch (M8170 to M8175) ................................................................................................ 157
10.5.1 Allocation of special memories to input numbers (ON duration of input signals) ...................... 157
10.5.2 Cautions for pulse catch............................................................................................................ 157
10.5.3 Examples of external wiring....................................................................................................... 158
10.6 Pulse width/Pulse period measurement function (Supported in Ver. 1.10 or later)................... 159
10.6.1 Allocation of special memories to input numbers ...................................................................... 159
10.6.2 Cautions for pulse width/period measurement function............................................................. 159
10.6.3 Examples of external wiring....................................................................................................... 160
11. Use of High-speed Counters 161
11.1 Outline....................................................................................................................................... 161
11.2 Types of Counting and Operations ........................................................................................... 161
11.2.1 Types and input signal forms..................................................................................................... 161
11.2.2 High-speed counter device notations ........................................................................................ 161
11.2.3 Cautions in connecting mating device....................................................................................... 161
11.3 List of Device Numbers and Functions ..................................................................................... 162
11.4 Allocation of Device Numbers to Input Numbers ...................................................................... 163
11.4.1 Allocation table .......................................................................................................................... 163
11.4.2 Restriction of redundant use of input numbers.......................................................................... 163
11.5 Handling of High-speed Counters............................................................................................. 164
11.5.1 1-phase 1-count input................................................................................................................ 164
11.5.2 1-phase 2-count input................................................................................................................ 165
11.5.3 2-phase 2-count input................................................................................................................ 166

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
11.6 Timing of Updating of Current Value and Comparison of Current Value .................................. 167
11.6.1 Timing of updating of current value ........................................................................................... 167
11.6.2 Comparison of current value ..................................................................................................... 167
11.7 Response Frequency and Overall Frequency........................................................................... 168
11.8 Examples of External Wiring (Rotary Encoder)......................................................................... 169
11.8.1 1-phase 1-input [C235 to C245] ................................................................................................ 169
11.8.2 2-phase 2-input [C251 to C255] ................................................................................................ 170
11.9 Related Devices and Function Switching Procedures .............................................................. 171
11.9.1 Related devices......................................................................................................................... 171
11.9.2 [Function switching] switching of allocation and functions of input terminals ............................ 172
11.10 Cautions on Use...................................................................................................................... 172
12. Output Wiring Procedures 173
12.1 External Wiring for Relay Output Type...................................................................................... 175
12.1.1 Product life of relay contacts ..................................................................................................... 175
12.1.2 Handling of relay output............................................................................................................. 175
12.1.3 External wiring precautions ....................................................................................................... 176
12.1.4 Example of external wiring ........................................................................................................ 177
12.2 External Wiring of Transistor Output (Sink/Source) Type ......................................................... 178
12.2.1 Transistor Output Sink and Source ........................................................................................... 178
12.2.2 Handling of transistor output...................................................................................................... 179
12.2.3 External wiring precautions ....................................................................................................... 181
12.2.4 Example of external wiring ........................................................................................................ 182
12.3 External Wiring for Triac (SSR) Output Type ............................................................................ 184
12.3.1 Handling of triac output.............................................................................................................. 184
12.3.2 External wiring precautions ....................................................................................................... 185
12.3.3 Example of external wiring ........................................................................................................ 186
13. Examples of Wiring for Various Uses 187
13.1 Notes about Examples of Wiring............................................................................................... 188
13.2 Digital Switch [DSW Instructions (FNC72)/BIN Instructions (FNC19)]...................................... 189
13.2.1 When DSW instructions are used.............................................................................................. 189
13.2.2 When BIN instructions are used ................................................................................................ 192
13.3 Input Matrix [MTR Instructions (FNC 52)] ................................................................................. 193
13.4 Seven Segment with Latch [SEGL Instructions (FNC74)/BCD Instructions (FNC18)].............. 196
13.4.1 When SEGL instructions are used ............................................................................................ 196
13.4.2 When BCD instructions are used .............................................................................................. 198
14. Test Operation, Adjustment, Maintenance and Troubleshooting 200
14.1 Preparation for Test Operation.................................................................................................. 201
14.1.1 Preliminary inspection [power OFF] .......................................................................................... 201
14.1.2 Connection to built-in programming connector (RS-422) .......................................................... 201
14.1.3 Connection to built-in programming connector (USB) ............................................................... 202
14.1.4 Writing of program and program check [power ON and PLC stopped] ..................................... 203
14.2 Running and Stopping Procedures [Power ON]........................................................................ 204
14.2.1 Methods of running and stopping .............................................................................................. 204
14.2.2 Use of several running/stopping methods ................................................................................. 205
14.3 Operation and Test [Power ON and PLC Running] .................................................................. 206
14.3.1 Self-diagnostic function ............................................................................................................. 206
14.3.2 Test functions ............................................................................................................................ 206
14.3.3 Program modification function ................................................................................................... 207
14.3.4 Built-in variable analog potentiometer function.......................................................................... 207
14.4 Maintenance and Periodic Inspection ....................................................................................... 208
14.4.1 Procedures for checking model name....................................................................................... 208
14.4.2 Periodic inspection - battery life, etc.......................................................................................... 208
14.4.3 Maintenance - product life of relay contacts............................................................................. 209

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
14.5 Troubleshooting with LEDs ....................................................................................................... 211
14.5.1 POW LED [on/flashing/off]......................................................................................................... 211
14.5.2 ALM LED [on/off] ....................................................................................................................... 211
14.5.3 ERR LED [on/flashing/off].......................................................................................................... 212
14.6 Judgment by Error Codes and Representation of Error Codes ................................................ 213
14.6.1 Operation and check by GX Works2 ......................................................................................... 213
14.6.2 Operation and check on display module (FX3G-5DM) .............................................................. 214
14.6.3 Representation of errors............................................................................................................ 215
14.6.4 Error Code List and Action ........................................................................................................ 216
14.7 Troubleshooting ........................................................................................................................ 223
14.7.1 Output does not operate (main unit and input/output extension blocks) ................................... 223
14.7.2 24V DC input does not operate (main unit and input/output extension blocks)......................... 223
14.7.3 Cautions in registering keyword ................................................................................................ 224
15. Input/Output Powered Extension Units 225
15.1 Outline....................................................................................................................................... 227
15.1.1 Product configuration................................................................................................................. 227
15.1.2 Product list................................................................................................................................. 227
15.2 Power supply specifications ...................................................................................................... 228
15.2.1 Weight, accessories, etc............................................................................................................ 228
15.2.2 Part names ................................................................................................................................ 229
15.3 FX2N-32ER-ES/UL, FX2N-48ER-ES/UL, FX2N-48ER-DS ........................................................ 231
15.3.1 Product specifications................................................................................................................ 231
15.3.2 External dimensions .................................................................................................................. 232
15.3.3 Terminal layout.......................................................................................................................... 233
15.4 FX2N-32ET-ESS/UL, FX2N-48ET-ESS/UL, FX2N-48ET-DSS .................................................. 234
15.4.1 Product specifications................................................................................................................ 234
15.4.2 External dimensions .................................................................................................................. 235
15.4.3 Terminal layout.......................................................................................................................... 236
15.5 FX2N-32ER, FX2N-48ER, FX2N-48ER-D.................................................................................. 237
15.5.1 Product specifications................................................................................................................ 237
15.5.2 External dimensions .................................................................................................................. 238
15.5.3 Terminal layout.......................................................................................................................... 239
15.6 FX2N-32ET, FX2N-48ET, FX2N-48ET-D................................................................................... 240
15.6.1 Product specifications................................................................................................................ 240
15.6.2 External dimensions .................................................................................................................. 241
15.6.3 Terminal layout.......................................................................................................................... 242
15.7 FX2N-32ES ............................................................................................................................... 243
15.7.1 Product specifications................................................................................................................ 243
15.7.2 External dimensions .................................................................................................................. 244
15.7.3 Terminal layout.......................................................................................................................... 244
15.8 FX2N-48ER-UA1/UL ................................................................................................................. 245
15.8.1 Product specifications................................................................................................................ 245
15.8.2 External dimensions .................................................................................................................. 246
15.8.3 Terminal layout.......................................................................................................................... 246
16. Input/Output Extension Blocks 247
16.1 Outline....................................................................................................................................... 249
16.1.1 Product configuration................................................................................................................. 249
16.1.2 Product list................................................................................................................................. 249
16.2 FX2N-8ER-ES/UL (24V DC Sink/Source Input, Relay Output) ................................................. 251
16.2.1 Product specifications................................................................................................................ 251
16.2.2 Parts identification and terminal arrangement........................................................................... 252
16.2.3 External dimensions .................................................................................................................. 253
16.3 FX2N-8ER (24V DC Sink Input, Relay Output) ......................................................................... 254
16.3.1 Product specifications................................................................................................................ 254
16.3.2 Parts identification and terminal arrangement........................................................................... 255
16.3.3 External dimensions .................................................................................................................. 256

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
16.4 FX2N-8EX-ES/UL, FX2N-16EX-ES/UL (24V DC Sink/Source Input) ........................................ 257
16.4.1 Product specifications................................................................................................................ 257
16.4.2 Parts identification and terminal arrangement........................................................................... 258
16.4.3 External dimensions .................................................................................................................. 259
16.5 FX2N-8EX, FX2N-16EX and FX2N-16EX-C .............................................................................. 260
16.5.1 Product specifications................................................................................................................ 260
16.5.2 Parts identification and terminal arrangement........................................................................... 261
16.5.3 External dimensions .................................................................................................................. 262
16.6 FX2N-16EXL-C (5V DC Input: 16 Points).................................................................................. 264
16.6.1 Product specifications................................................................................................................ 264
16.6.2 Parts identification and terminal arrangement........................................................................... 265
16.6.3 External dimensions .................................................................................................................. 265
16.6.4 Example of wiring ...................................................................................................................... 265
16.7 FX2N-8EX-UA1/UL (100V AC Input)......................................................................................... 267
16.7.1 Product specifications................................................................................................................ 267
16.7.2 Parts identification and terminal arrangement........................................................................... 268
16.7.3 External dimensions .................................................................................................................. 268
16.8 FX2N-8EYR-ES/UL, FX2N-8EYR-S-ES/UL, FX2N-16EYR-ES/UL (Relay Output) ................... 269
16.8.1 Product specifications................................................................................................................ 269
16.8.2 Parts identification and terminal arrangement........................................................................... 270
16.8.3 External dimensions .................................................................................................................. 272
16.9 FX2N-8EYT-ESS/UL, FX2N-16EYT-ESS/UL (Transistor Output) ............................................. 273
16.9.1 Product specifications................................................................................................................ 273
16.9.2 Parts identification and terminal arrangement........................................................................... 274
16.9.3 External dimensions .................................................................................................................. 275
16.10 FX2N-8EYR, FX2N-16EYR (Relay Output) ............................................................................. 276
16.10.1 Product specifications.............................................................................................................. 276
16.10.2 Parts identification and terminal arrangement ......................................................................... 277
16.10.3 External dimensions ................................................................................................................ 278
16.11 FX2N-8EYT, FX2N-16EYT, FX2N-16EYT-C (Transistor Output) ............................................ 279
16.11.1 Product specifications.............................................................................................................. 279
16.11.2 Parts identification and terminal arrangement ......................................................................... 280
16.11.3 External dimensions ................................................................................................................ 281
16.12 FX2N-8EYT-H (Transistor Output) .......................................................................................... 283
16.12.1 Product specifications.............................................................................................................. 283
16.12.2 Parts identification and terminal arrangement ......................................................................... 284
16.12.3 External dimensions ................................................................................................................ 284
16.13 FX2N-16EYS (Triac Output: 16 Points)................................................................................... 285
16.13.1 Product specifications.............................................................................................................. 285
16.13.2 Parts identification and terminal arrangement ......................................................................... 286
16.13.3 External dimensions ................................................................................................................ 286
17. Extension Power Supply Unit 287
17.1 Outline....................................................................................................................................... 287
17.2 Specifications ............................................................................................................................ 288
17.2.1 Generic Specifications............................................................................................................... 288
17.2.2 Performance Specifications....................................................................................................... 288
17.2.3 External Dimensions.................................................................................................................. 288
17.3 Extension Power Supply Unit Related Precaution .................................................................... 289
18. Other Extension Devices and Optional Units
(External Dimensions and Terminal Arrangement) 290
18.1 Special Function Units/Blocks................................................................................................... 290
18.1.1 FX2N-2AD.................................................................................................................................. 290
18.1.2 FX2N-2DA.................................................................................................................................. 290
18.1.3 FX3U-4AD.................................................................................................................................. 291
18.1.4 FX3U-4DA.................................................................................................................................. 291
18.1.5 FX2N-4AD.................................................................................................................................. 292

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
18.1.6 FX2N-4DA.................................................................................................................................. 292
18.1.7 FX2N-4AD-PT............................................................................................................................ 293
18.1.8 FX2N-4AD-TC............................................................................................................................ 293
18.1.9 FX2N-5A .................................................................................................................................... 294
18.1.10 FX3U-4LC ................................................................................................................................ 294
18.1.11 FX2N-2LC ................................................................................................................................ 295
18.1.12 FX2N-8AD................................................................................................................................ 295
18.1.13 FX3U-16CCL-M ....................................................................................................................... 296
18.1.14 FX2N-16CCL-M ....................................................................................................................... 296
18.1.15 FX2N-32CCL ........................................................................................................................... 297
18.1.16 FX3U-64CCL ........................................................................................................................... 297
18.1.17 FX2N-64CL-M.......................................................................................................................... 298
18.1.18 FX3U-128ASL-M...................................................................................................................... 298
18.1.19 FX3U-32DP.............................................................................................................................. 299
18.2 Special Adapters....................................................................................................................... 300
18.2.1 FX3U-4AD-ADP ......................................................................................................................... 300
18.2.2 FX3U-4DA-ADP ......................................................................................................................... 300
18.2.3 FX3U-3A-ADP............................................................................................................................ 300
18.2.4 FX3U-4AD-PT(W)-ADP ............................................................................................................. 301
18.2.5 FX3U-4AD-PNK-ADP ................................................................................................................ 301
18.2.6 FX3U-4AD-TC-ADP ................................................................................................................... 301
18.2.7 FX3U-232ADP(-MB) .................................................................................................................. 302
18.2.8 FX3U-485ADP(-MB) .................................................................................................................. 302
18.2.9 FX3U-ENET-ADP ...................................................................................................................... 303
18.3 Expansion Board....................................................................................................................... 304
18.3.1 FX3G-4EX-BD ........................................................................................................................... 304
18.3.2 FX3G-2EYT-BD ......................................................................................................................... 304
18.3.3 FX3G-232-BD ............................................................................................................................ 305
18.3.4 FX3G-422-BD ............................................................................................................................ 305
18.3.5 FX3G-485-BD ............................................................................................................................ 306
18.3.6 FX3G-485-BD-RJ....................................................................................................................... 306
18.3.7 FX3G-2AD-BD ........................................................................................................................... 307
18.3.8 FX3G-1DA-BD ........................................................................................................................... 307
18.3.9 FX3G-8AV-BD ........................................................................................................................... 308
18.4 Power Supply ............................................................................................................................ 309
18.4.1 FX2N-20PSU ............................................................................................................................. 309
18.5 Connector Conversion Adapter................................................................................................. 309
18.5.1 FX3G-CNV-ADP ........................................................................................................................ 309
18.5.2 FX2N-CNV-BC........................................................................................................................... 310
18.6 Interface Module ....................................................................................................................... 310
18.6.1 FX-232AWC-H........................................................................................................................... 310
19. Display Module (FX3G-5DM) 311
19.1 Specifications ............................................................................................................................ 311
19.1.1 Applicable PLC.......................................................................................................................... 311
19.1.2 Display/switch specifications ..................................................................................................... 311
19.1.3 Part Names................................................................................................................................ 312
19.1.4 External Dimensions.................................................................................................................. 312
19.2 Installation and Removal........................................................................................................... 313
19.2.1 Installation (when the expansion board/connector conversion adapter is not used together) ... 313
19.2.2 Installation (when the expansion board/connector conversion adapter is used together)......... 314
19.3 Summary of Functions .............................................................................................................. 315
19.4 Procedure for Accessing the Menu Screen from the Title Screen ............................................ 316
19.4.1 Title screen................................................................................................................................ 316
19.4.2 Top screen (time display) .......................................................................................................... 316
19.4.3 Menu screen.............................................................................................................................. 316
19.5 Menu Structure.......................................................................................................................... 317
19.6 Monitor/Test Mode .................................................................................................................... 319
19.6.1 Relevant devices ....................................................................................................................... 319
19.6.2 Monitor mode operation............................................................................................................. 320
19.6.3 Monitor screen and status display ............................................................................................. 321
19.6.4 Test mode operation.................................................................................................................. 323
19.6.5 Test mode operation notes........................................................................................................ 326

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
19.7 Error Check ............................................................................................................................... 326
19.8 LANGUAGE (Menu Display Language Setting)........................................................................ 327
19.8.1 Changing to Japanese menus................................................................................................... 327
19.8.2 Changing to English menus....................................................................................................... 328
19.8.3 D8302 changes by program and related devices ...................................................................... 328
19.9 Contrast..................................................................................................................................... 329
19.10 Clock Menu (Current Time Setting)......................................................................................... 330
19.10.1 Clock setting procedure........................................................................................................... 330
19.10.2 Displaying the current time ...................................................................................................... 331
19.10.3 Changing the current time's "Year" from 2-digit format to 4-digit format ................................. 331
19.11 Keyword .................................................................................................................................. 332
19.11.1 Keyword types and levels........................................................................................................ 332
19.11.2 Level-specific restrictions screen list ....................................................................................... 332
19.11.3 Keyword storage...................................................................................................................... 333
19.11.4 Screens requiring keyword for access..................................................................................... 333
19.11.5 Canceling a keyword ............................................................................................................... 334
19.11.6 Enabling a keyword ................................................................................................................. 335
19.12 Memory Cassette Transfers.................................................................................................... 336
19.12.1 Transfer from internal EEPROM to memory cassette (Cassette <- PLC) ............................... 336
19.12.2 Transfer from memory cassette to internal EEPROM (Cassette -> PLC) ............................... 337
19.13 System Information (Restrictions From PLC).......................................................................... 339
19.13.1 System information list ............................................................................................................ 339
19.13.2 System information setting program example ......................................................................... 339
19.14 Specified Device Monitor Function.......................................................................................... 340
19.14.1 System information - specified device monitor function .......................................................... 340
19.14.2 Differences between specified device monitor screen and monitor/test screen...................... 341
19.14.3 Program example1 (when monitoring/testing a timer)............................................................. 341
19.14.4 Program example2 (when monitoring consecutive timers using operation keys).................... 342
19.14.5 Program example3 (when monitoring non-consecutive timers using operation keys) ............ 343
19.14.6 Monitor operation on specified device monitor screen ............................................................ 344
19.14.7 Specified device monitor screen for monitoring....................................................................... 344
19.14.8 Test operation on specified device monitor screen ................................................................. 345
19.15 Screen saver function ............................................................................................................. 346
19.15.1 System information - Screen saver function............................................................................ 346
19.15.2 Screen saver display ............................................................................................................... 346
19.15.3 Program example (screen saver time setting)......................................................................... 346
19.16 Display Screen Protect Function............................................................................................. 347
19.16.1 System information - display screen protect function.............................................................. 347
19.16.2 Program example (screen protect function setting)................................................................. 347
19.16.3 Keyword and display screen protect function levels and corresponding restrictions............... 348
19.16.4 Relationship between keyword and display screen protect function ....................................... 348
19.16.5 Keyword levels ........................................................................................................................ 349
19.16.6
Relationship between specified device monitor function and display screen protect function ... 349
19.16.7 Pointers for using the display screen protect function ............................................................. 350
19.17 Operation Button ON/OFF Information ................................................................................... 351
19.17.1 Various applications ................................................................................................................ 351
19.17.2 System information - operation button ON/OFF information ................................................... 351
19.18 Specifying a Hexadecimal Current Value Display Format ...................................................... 352
19.18.1 System information - specifying a hexadecimal current value display format ......................... 352
19.18.2 Program example 1 (specifying a hexadecimal data display format) ...................................... 352
19.18.3 Program example 2 (specifying a decadal data display format).............................................. 352
19.19 Operation Error Messages and Corrective Actions................................................................. 353
19.19.1 When a "Fatal error occurred" message appears ................................................................... 354
19.20 Menu Display Characters - Japanese and English Display Character Correspondence Table .... 355
20. Terminal Block 356
20.1 Outline....................................................................................................................................... 358
20.1.1 Product configuration................................................................................................................. 359
20.2 External Dimensions and Component Names .......................................................................... 360
20.3 Terminal Layout ........................................................................................................................ 361

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FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
20.4 Installation Work........................................................................................................................ 363
20.4.1 Installation ................................................................................................................................. 363
20.4.2 Removal .................................................................................................................................... 363
20.4.3 Input/output cable connection.................................................................................................... 363
20.4.4 Connection to terminal block ..................................................................................................... 364
20.5 FX-16E-TB, FX-32E-TB ............................................................................................................ 365
20.5.1 Internal circuit ............................................................................................................................ 365
20.5.2 Example of input external wiring................................................................................................ 366
20.5.3 Output external wiring................................................................................................................ 366
20.6 FX-16EX-A1-TB ........................................................................................................................ 367
20.6.1 Specifications ............................................................................................................................ 367
20.6.2 Internal circuit ............................................................................................................................ 368
20.6.3 Example of input external wiring................................................................................................ 368
20.7 FX-16EYR-TB ........................................................................................................................... 369
20.7.1 Specifications ............................................................................................................................ 369
20.7.2 Internal circuit ............................................................................................................................ 370
20.7.3 Example of output external wiring ............................................................................................. 370
20.7.4 External wiring precautions ....................................................................................................... 371
20.7.5 Product life of relay contacts ..................................................................................................... 372
20.8 FX-16EYT-TB, FX-16EYT-H-TB ............................................................................................... 373
20.8.1 Specifications ............................................................................................................................ 373
20.8.2 Internal circuit ............................................................................................................................ 374
20.8.3 Example of output external wiring ............................................................................................. 374
20.8.4 External wiring precautions ....................................................................................................... 375
20.9 FX-16EYS-TB ........................................................................................................................... 376
20.9.1 Specifications ............................................................................................................................ 376
20.9.2 Internal circuit ............................................................................................................................ 377
20.9.3 Example of output external wiring ............................................................................................. 377
20.9.4 External wiring precautions ....................................................................................................... 378
21. Memory Cassette 379
21.1 Outline....................................................................................................................................... 379
21.2 Specifications ............................................................................................................................ 379
21.2.1 Electrical specifications ............................................................................................................. 379
21.2.2 Part names and External dimensions........................................................................................ 379
21.3 Installation ................................................................................................................................. 380
21.3.1 Installation (when the expansion board/connector conversion adapter is not used together) ... 380
21.3.2 Installation (when the expansion board/connector conversion adapter is used together)......... 381
21.4 Removal .................................................................................................................................... 383
21.4.1 Removal (when the expansion board/connector conversion adapter are not used together) ... 383
21.4.2 Removal (when the expansion board/connector conversion adapter are used together) ......... 384
21.5 Saved Data Content.................................................................................................................. 385
21.6 PROTECT Switch ..................................................................................................................... 386
21.6.1 PROTECT switch setting........................................................................................................... 386
21.6.2 PROTECT switch operation ...................................................................................................... 386
21.6.3 Precautions when setting and using the switch......................................................................... 386
21.7 Memory Cassette <-> PLC (EEPROM Memory) Transfers by Loader Function....................... 387
21.7.1 Writing (WR: 32L -> PLC)......................................................................................................... 387
21.7.2 Reading (RD: 32L <- PLC) ........................................................................................................ 388
21.8 Operation Precautions .............................................................................................................. 388
22. Battery 389
22.1 Battery Purpose ........................................................................................................................ 389
22.2 Specifications ............................................................................................................................ 389
22.3 Setting for Battery ..................................................................................................................... 390
22.3.1 Attaching the battery.................................................................................................................. 390
22.3.2 Setting the battery mode using GX Works2 .............................................................................. 390

13
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
22.4 Battery Handling........................................................................................................................ 391
22.4.1 Battery life and replacement guidelines..................................................................................... 391
22.4.2 Reading the date of manufacture .............................................................................................. 391
22.4.3 Special "battery low-voltage" device & notification program example ....................................... 391
22.5 Battery Replacement................................................................................................................. 392
22.6 Battery Related Precautions ..................................................................................................... 392
Appendix A: Special Device List 393
Appendix A-1 Special Auxiliary Relay (M8000 to M8511) ........................................................ 393
Appendix A-2 Special Data Register (D8000 to D8511) ........................................................... 400
Appendix A-3 Analog expansion boards[M8260 to M8279 and D8260 to D8279] ................... 407
Appendix A-3-1 Special auxiliary relays (M8260 to M8279)................................................................. 407
Appendix A-3-2 Special data registers (D8260 to D8279).................................................................... 408
Appendix A-4 Analog special adapters[M8280 to M8299 and D8280 to D8299]...................... 409
Appendix A-4-1 Special auxiliary relays (M8280 to M8299)................................................................. 409
Appendix A-4-2 Special data registers (D8280 to D8299).................................................................... 411
Appendix B: Instruction List 413
Appendix B-1 Basic Instructions ...............................................................................................413
Appendix B-2 Step Ladder Instructions .................................................................................... 413
Appendix B-3 Applied Instructions ... in Ascending Order of FNC Number.............................. 414
Appendix C: Discontinued models 417
Appendix D: Precautions for Battery Transportation 418
Appendix D-1 Regulated FX3G Series products ....................................................................... 418
Appendix D-2 Transport guidelines .......................................................................................... 418
Appendix E: Handling of Batteries and Devices with Built-in Batteries in
EU Member States 420
Appendix E-1 Disposal precautions.......................................................................................... 420
Appendix E-2 Exportation precautions ..................................................................................... 420
Appendix E-3 Regulated FX3G Series products ....................................................................... 420
Warranty................................................................................................................................. 422
Revised History ..................................................................................................................... 423

14
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Standards
Standards
Certification of UL, cUL standards
FX3G series main units, FX3G series interface adapter, FX3U series special adapters and FX2N input/output
extension units/blocks supporting UL, cUL standards are as follows:
Compliance with EC directive (CE Marking)
This product complies with EC directive, however, this document does not guarantee that a mechanical
system including this product will comply with EC directive.
Compliance to EMC directive and LVD directive of the entire mechanical module should be checked by the
user / manufacturer. For more details please contact to the local Mitsubishi Electric sales site.
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.
UL, cUL file number : E95239
Models : MELSEC FX3G/FX3U series manufactured
FX3G-MR/ES FX3G-MT/ES FX3G- MT/ESS
FX3G- MR/DS FX3G-MT/DS FX3G-MT/DSS
Where indicates:14,24,40,60
FX3G-CNV-ADP
FX3U-232ADP(-MB) FX3U-485ADP(-MB) FX3U-ENET-ADP
FX3U-4AD-ADP FX3U-4DA-ADP FX3U-3A-ADP FX3U-4AD-PT-ADP
FX3U-4AD-PTW-ADP FX3U-4AD-PNK-ADP FX3U-4AD-TC-ADP
Models : MELSEC FX2N series manufactured
FX2N- ER-ES/UL FX2N- ET-ESS/UL
Where indicates:32,48
FX2N-48ER-DS FX2N-48ET-DSS FX2N-48ER-UA1/UL
FX2N-8ER-ES/UL FX2N-8EX-ES/UL FX2N-8EYR-ES/UL FX2N-8EYR-S-ES/UL
FX2N-8EYT-ESS/UL FX2N-8EX-UA1/UL
FX2N-16EX-ES/UL FX2N-16EYR-ES/UL FX2N-16EYT-ESS/UL FX2N-16EYS