Mitsubishi Electric MELSEC FX Series User manual

MITSUBISHI ELECTRIC
Programmable Controllers
User's Manual
(Hardware Edition)
FX 3G
01 12 2009
JY997D31301
Version D
MITSUBISHI ELECTRIC
INDUSTRIAL AUTOMATION

Safety Precautions
(Read these precautions before using.)
Before installation, operation, maintenance or inspection of this product, thoroughly read through and
understand this manual and the associated manuals. Also, take care to handle the module properly and safely.
This manual classifies the safety precautions into two categories: and .
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.
Depending on the circumstances, procedures indicated by may also cause severe
injury. In any case, it is important to follow all usage directions. 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
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
94
equipment at the upper and lower positioning limits).
117
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all outputs
133
are turned off. Also, when an error that cannot be detected by the PLC CPU occurs in an input/output control
166
block, output control may be disabled.
180
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
217
3) Note that the output current of the 24V DC service power supply varies depending on the model and the
238
absence/presence of extension blocks. If an overload occurs, the voltage automatically drops, inputs in the PLC
276
are disabled, and all outputs are turned off.
340
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.
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 94
control line at least 100mm (3.94") or more away from the main circuit or power line. 117
Noise may cause malfunctions. 133
• Install module so that excessive force will not be applied to peripheral device connectors. 166
Failure to do so may result in wire damage/breakage or PLC failure. 180
217
238
276
340
(1)

Safety Precautions
(Read these precautions before using.)
2. INSTALLATION PRECAUTIONS
Reference
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
94
Failure to do so may cause electric shock. 340
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, Cl 2 , H 2 S, SO 2 or
NO 2 ), flammable gas, vibration or impacts, or expose it to high temperature, condensation, or rain and wind.
• Do not touch the conductive parts of the product directly.
Doing so may cause device failures or malfunctions.
• Do not touch the conductive parts of the product directly to avoid failure or malfunctions.
• Install the product securely using a DIN rail or mounting screws.
Terminal block DIN rail only
Main unit, FX 2N Series I/O extension unit/block, and FX 2N /FX 3U Series special
DIN rail or direct mounting
extension block/special adapter
• 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.
Loose connections may cause malfunctions. 95
• When drilling screw holes or wiring, make sure that cutting and wiring debris do not enter the ventilation slits. 341
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 memory cassette, and expansion board 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, expansion boards, and special adapters
- Extension units/blocks and the FX Series terminal block
- 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.
3. WIRING PRECAUTIONS
Reference
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work. 95
Failure to do so may cause electric shock or damage to the product. 117
• Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation 133
after installation or wiring work. 166
Failure to do so may cause electric shock. 180
217
238
341
(2)

Safety Precautions
(Read these precautions before using.)
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 mm
2
or thicker.
Do not use common grounding with heavy electrical systems (refer to Section 9.3).
• Connect the AC power supply to the dedicated terminals specified 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 wring 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.
96
• Do not wire vacant terminals externally.
118
Doing so may damage the product.
134
• When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
167
Failure to do so may cause fire, equipment failures or malfunctions.
170
• Make sure to properly wire the FX 2N /FX 3U Series extension equipment in accordance with the following
175
precautions.
176
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
179
damage to the product.
181
- The disposal size of the cable end should follow the dimensions described in the manual.
217
- Tightening torque should follow the specifications in the manual.
238
• Make sure to properly wire to the European terminal board in accordance with the following precautions.
341
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
350
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.
4. STARTUP AND MAINTENANCE PRECAUTIONS
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.
193
- Do not store or use the battery at high temperatures or expose to direct sunlight. 295
- Do not expose to water, bring near fire or touch liquid leakage or other contents directly. 373
- 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.
• 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.

(3)

Safety Precautions
(Read these precautions before using.)
Reference
• Turn off the power to the PLC beforeattaching 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.
193
For repair, contact your local Mitsubishi Electric distributor.
295
• Turn off the power to the PLC before connecting or disconnecting any extension cable.
363
Failure to do so may cause equipment failures or malfunctions.
373
• 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, expansion boards, and special adapters
- Extension units/blocks and FX Series terminal blocks
- Battery and memory cassette
5. DISPOSAL PRECAUTIONS
Reference
• Please contact a certified electronic waste disposal company for the environmentally safe recycling and disposal of
your device.
193
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)
6. TRANSPORTATION PRECAUTIONS
Reference
• When transporting the FX 3G 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.
193
• The PLC is a precision instrument. During transportation, avoid impacts larger than those specified in the general
373
specifications (Section 4.1). Failure to do so may cause failures in the PLC.
After transportation, verify the operations of the PLC.
• When transporting lithium batteries, follow required transportation regulations.
(For details of the regulated products, refer to Appendix D)

(4)

FX3G Series Programmable Controllers
User’s Manual - Hardware Edition
FX 3G Series Programmable Controllers
User's Manual [Hardware Edition]
Manual number JY997D31301
Manual revision D
Date 12/2009
Foreword
This manual contains text, diagrams and explanations which will guide the reader in the correct
installation, safe use and operation of the FX 3G 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.
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.
© 2008 MITSUBISHI ELECTRIC CORPORATION
1

FX3G Series Programmable Controllers
User’s Manual - Hardware Edition
Outline Precautions
• This manual provides information for the use of the FX 3G 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 the nearest Mitsubishi Electric distributor.
• 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 the nearest Mitsubishi Electric
distributor.
Registration
• Microsoft®and Windows®are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
• The company name and the product name to be described in this manual are the registered trademarks or
trademarks of each company.
2

FX3G Series Programmable Controllers
User's Manual - Hardware Edition Table of Contents
Table of Contents
SAFETY PRECAUTIONS .................................................................................................. (1)
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.................................................................... 26
2. Features and Part Names 28
2.1 Major Features .............................................................................................................................. 28
2.2 Names and Functions of Parts...................................................................................................... 30
2.2.1
Front Panel .................................................................................................................................... 30
2.2.2
Sides.............................................................................................................................................. 32
3. Introduction of Products 33
3.1 List of Products and Interpretation of Model Names ..................................................................... 33
3.1.1 Main units ...................................................................................................................................... 34
3.1.2 Input/output powered extension units............................................................................................ 35
3.1.3 Input/output extension blocks ........................................................................................................ 36
3.1.4 Special function blocks .................................................................................................................. 37
3.1.5 Display module .............................................................................................................................. 37
3.1.6 Expansion boards.......................................................................................................................... 37
3.1.7 Connector conversion adapter ...................................................................................................... 38
3.1.8 Special adapters............................................................................................................................ 38
3.1.9 Extension power supply unit.......................................................................................................... 38
3.1.10 Extension cables and connector conversion adapter/ Battery/Memory cassettes ...................... 38
3.1.11 FX Series terminal blocks (cables and connectors) .................................................................... 39
3.1.12 Remote I/O .................................................................................................................................. 39
3.1.13 Power supply unit ........................................................................................................................ 39
3.2 Connector Types and Cables for Program Communication.......................................................... 40
3.2.1 Programming tool .......................................................................................................................... 41
3.2.2 Communication cables .................................................................................................................. 41
3.2.3 Converters and interface ............................................................................................................... 41
3.2.4 The accessing path to the FX 3G from CC-Link Network. .............................................................. 42
4. Specifications, External Dimensions and Terminal Layout (Main Units) 43
4.1 Generic Specifications .................................................................................................................. 43
4.1.1 Dielectric withstand voltage test and insulation resistance test..................................................... 44
4.2 Power Supply Specifications......................................................................................................... 45
4.2.1 AC Power Supply Type ................................................................................................................. 45
4.2.2 DC Power Supply Type ................................................................................................................. 45
4.3 Input Specifications ....................................................................................................................... 46
4.3.1 24V DC Input (sink/source) ........................................................................................................... 46

3

FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
4.4 Output Specifications .................................................................................................................... 47
4.4.1 Relay output .................................................................................................................................. 47
4.4.2 Transistor output............................................................................................................................ 48
4.5 Performance Specifications .......................................................................................................... 49
4.6 External Dimensions (Weight/Accessories/Installation) ................................................................ 51
4.6.1 Main units ...................................................................................................................................... 51
4.7 Terminal Layout ............................................................................................................................ 52
4.7.1 Interpretation of terminal block layout............................................................................................ 52
4.7.2 FX 3G -14M .................................................................................................................................. 53
4.7.3 FX 3G -24M .................................................................................................................................. 53
4.7.4 FX 3G -40M .................................................................................................................................. 54
4.7.5 FX 3G -60M .................................................................................................................................. 54
5. Version Information and Peripheral Equipment Connectability 55
5.1 Version Information ....................................................................................................................... 55
5.1.1 Manufacturer's serial number check method................................................................................. 55
5.1.2 Version check method ................................................................................................................... 56
5.1.3 Version upgrade history................................................................................................................. 56
5.2 Programming Tool Applicability..................................................................................................... 57
5.2.1 Applicable versions of programming tool....................................................................................... 57
5.2.2 In the case of programming tool (version) not applicable.............................................................. 57
5.2.3 Program transfer speed and programming tool............................................................................. 58
5.2.4 Cautions on connecting peripheral equipment by way of expansion board or special adapter..... 58
5.2.5 Cautions on write during RUN ....................................................................................................... 59
5.3 Precautions on Use of (Built-in USB) Programming Port.............................................................. 61
5.3.1 Installation of USB driver (GX Developer Ver. 8.72A or later)....................................................... 61
5.3.2 Setting in GX Developer (Ver. 8.72A or later) ............................................................................... 61
5.4 Cautions on using transparent function by way of USB in GOT1000 Series ................................ 62
5.5 Cautions on using transparent port (2-port) function of GOT-F900 Series ................................... 63
5.6 Other Peripheral Equipment Applicability...................................................................................... 64
5.6.1 Other Peripheral Equipment Applicability ...................................................................................... 64
6. Examination of System Configuration 65
6.1 Configuration of a Whole System.................................................................................................. 65
6.1.1 Expansion board/connector conversion adapter/memory cassette/display module configuration..... 66
6.2 Rules of System Configuration...................................................................................................... 67
6.3 Number of Input/Output Points and Maximum Number of Input/Output Points ........................... 69
6.3.1 Calculation of number of input/output points ................................................................................. 69
6.3.2 Maximum number of input/output points when CC-Link master is used ....................................... 71
6.4 Number of Connected Extension Devices (Including Extension Cable) ....................................... 72
6.4.1
Number of connectable expansion boards and special adapters..................................................
72
6.4.2
Input/output powered extension units............................................................................................
72
6.4.3
Extension Power Supply Unit ........................................................................................................
72
6.4.4
Special function blocks ..................................................................................................................
72
6.4.5 Extension cable ............................................................................................................................. 72
6.5 Expansion of Main Unit ................................................................................................................. 73
6.5.1
When adding input/output extension blocks using the 24V DC service power supply of the
main unit ...................................................................................................................................
74
6.5.2
Selection example 1 using the 24V DC service power supply of the main unit............................. 76
6.5.3 Selection example 2 using the 24V DC service power supply of the main unit............................. 77
6.6 Expansion of FX 2N Series I/O Powered Extension Unit ............................................................... 78
6.6.1
Quick reference matrix (when only input/output devices are added).............................................
78
6.6.2 When special extension devices are also added (calculation of current consumption)................. 81
6.7 Expansion of Extension Power Supply Unit (FX 3U -1PSU-5V)...................................................... 83
6.8 Number of Input/Output (Occupied) Points and Current Consumption......................................... 85
6.8.1
[A] Main units.................................................................................................................................
85
6.8.2
[B] Input/output powered extension units/blocks ...........................................................................
86
6.8.3
[C] Special function devices ..........................................................................................................
87
6.8.4 [D] Extension Power Supply Unit................................................................................................... 87

4

FX3G Series Programmable Controllers
User's Manual - Hardware Edition Table of Contents
7. Assignment of Input/Output Numbers and Unit Numbers 88
7.1 Assignment of Input/Output Numbers (X/Y).................................................................................. 88
7.1.1
Concept of assigning ..................................................................................................................... 88
7.1.2
Example of assigning .................................................................................................................... 89
7.1.3
Application of I/O number label ..................................................................................................... 89
7.2 Unit Numbers of Special Function Blocks ..................................................................................... 90
7.2.1
Concept of assigning ..................................................................................................................... 90
7.2.2
Example of assigning .................................................................................................................... 90
7.2.3
Application of unit number labels................................................................................................... 91
7.3 Assignment of Communication Channels ..................................................................................... 92
7.3.1 Assignment of communication channels ....................................................................................... 92
7.4 "Station No." Label of Expansion Board (FX 3G -485-BD) .............................................................. 93
7.5 Trimmer Layout Label of Expansion Board (FX 3G -8AV-BD) ........................................................ 93
8. Installation In Enclosure 94
8.1 Installation location........................................................................................................................ 97
8.1.1 Installation location in enclosure.................................................................................................... 97
8.1.2 Spaces in enclosure ...................................................................................................................... 98
8.2 Layout in Enclosure....................................................................................................................... 98
8.2.1 1-stage layout ................................................................................................................................ 98
8.2.2 2-stage layout ................................................................................................................................ 99
8.3 Examination for Installing Method in Enclosure .......................................................................... 100
8.3.1 Installing methods........................................................................................................................ 100
8.3.2 Cautions in examining installing method ..................................................................................... 100
8.3.3 Examples of installation............................................................................................................... 100
8.4 Procedures for Installing on and Detaching from DIN Rail.......................................................... 102
8.4.1 Preparation for installation........................................................................................................... 102
8.4.2 Installation of main unit................................................................................................................ 103
8.4.3 Installation of input/output powered extension unit/block and special function block .................. 104
8.4.4 Removal of main unit................................................................................................................... 105
8.5 Procedures for Installing Directly (with M4 Screws).................................................................... 106
8.5.1 Hole pitches for direct mounting .................................................................................................. 106
8.5.2 Example of mounting hole pitches............................................................................................... 108
8.5.3 Installation of main unit................................................................................................................ 109
8.5.4 Installation of input/output powered extension unit/block and special function block .................. 109
8.6 Connecting Methods for Main Unit and Extension Devices ........................................................ 110
8.6.1 Connection of extension devices................................................................................................. 110
8.6.2 Connecting method A - connection of expansion board.............................................................. 111
8.6.3 Connecting method B - connection of connector conversion adapter ......................................... 112
8.6.4 Connecting method C - connection of special adapter................................................................ 114
8.6.5 Connecting method D - connection of powered extension units/blocks to main unit................... 114
8.6.6 Connecting method E - connection of powered extension units/blocks ...................................... 115
8.6.7 Connecting method F - connection of extension cable and FX 2N -CNV-BC................................ 115
8.6.8 Connecting method G - connection of input/output powered extension unit ............................... 116
8.6.9 Connecting method H - connection of extension block to input/output powered extension unit.... 116
9. Preparation for Wiring and Power Supply Wiring Procedures 117
9.1 Preparation for Wiring ................................................................................................................. 119
9.1.1
Wiring procedures ....................................................................................................................... 119
9.1.2
Removal and installation of quick-release terminal block............................................................ 119
9.2 Cable Connecting Procedures .................................................................................................... 120
9.2.1
Input/output terminal block (power supply and input/output wiring)............................................. 120
9.2.2
Input/output connectors (FX 2N input/output extension blocks) ................................................... 123
9.2.3
Terminal block (for europe) [expansion board and special adapters].......................................... 124
9.3 Grounding ................................................................................................................................... 125

5

FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
9.4 Examples of External Wiring [AC Power Supply Type]............................................................... 126
9.4.1 Example of input/output wiring with 24V DC service power supply............................................. 126
9.4.2 Example of sink input [-common] wiring ...................................................................................... 127
9.4.3 Example of source input [+common] wiring................................................................................. 128
9.4.4 An external wiring example for the extension power supply unit (sink input [-common]) ............ 129
9.4.5 An external wiring example for the extension power supply unit (source input [+common]) ....... 130
9.5 Examples of External Wiring [DC Power Supply Type]............................................................... 131
9.5.1 Example of sink input [-common] wiring ...................................................................................... 131
9.5.2 Example of source input [+common] wiring................................................................................. 132
10. Input Wiring Procedures 133
10.1 Before Starting Input Wiring ...................................................................................................... 135
10.1.1 Sink and source input ................................................................................................................ 135
10.2 24V DC input (Sink and source input type) ............................................................................... 137
10.2.1 Handling of 24V DC input .......................................................................................................... 137
10.2.2 Instructions for connecting input devices................................................................................... 138
10.2.3 Examples of external wiring (sink input) [AC Power Supply Type]............................................ 140
10.2.4 Examples of external wiring (source input) [AC Power Supply Type] ....................................... 142
10.2.5 Examples of external wiring (sink input) [DC Power Supply Type]............................................ 143
10.2.6 Examples of external wiring (source input) [DC Power Supply Type] ....................................... 145
10.3 100V AC Input........................................................................................................................... 146
10.3.1 Input specifications .................................................................................................................... 146
10.3.2 Handling of 100V AC Input ........................................................................................................ 146
10.3.3 Examples of external wiring (100V AC input) ............................................................................ 147
10.4 Input Interruption (I00 to I50 ) .............................................................................................. 148
10.4.1 Allocation of pointers to input numbers (input signal ON/OFF duration) ................................... 148
10.4.2 Cautions for input interruption ................................................................................................... 148
10.4.3 Examples of external wiring....................................................................................................... 149
10.5 Pulse Catch (M8170 to M8175) ................................................................................................ 150
10.5.1 Allocation of special memories to input numbers (ON duration of input signals) ...................... 150
10.5.2 Cautions for pulse catch ............................................................................................................ 150
10.5.3 Examples of external wiring....................................................................................................... 151
10.6 Pulse width/Pulse period measurement function (Supported in Ver. 1.10 or later)................... 152
10.6.1 Allocation of special memories to input numbers ...................................................................... 152
10.6.2 Cautions for pulse width/period measurement function............................................................. 152
10.6.3 Examples of external wiring....................................................................................................... 153
11. Use of High-speed Counters 154
11.1 Outline....................................................................................................................................... 154
11.2 Types of Counting and Operations ........................................................................................... 154
11.2.1 Types and input signal forms..................................................................................................... 154
11.2.2 High-speed counter device notations ........................................................................................ 154
11.2.3 Cautions in connecting mating device ....................................................................................... 154
11.3 List of Device Numbers and Functions ..................................................................................... 155
11.4 Allocation of Device Numbers to Input Numbers ...................................................................... 156
11.4.1 Allocation table .......................................................................................................................... 156
11.4.2 Restriction of redundant use of input numbers.......................................................................... 156
11.5 Handling of High-speed Counters ............................................................................................. 157
11.5.1 1-phase 1-count input................................................................................................................ 157
11.5.2 1-phase 2-count input................................................................................................................ 158
11.5.3 2-phase 2-count input................................................................................................................ 159
11.6 Timing of Updating of Current Value and Comparison of Current Value .................................. 160
11.6.1 Timing of updating of current value ........................................................................................... 160
11.6.2 Comparison of current value ..................................................................................................... 160
11.7 Response Frequency and Overall Frequency........................................................................... 161
11.8 Examples of External Wiring (Rotary Encoder)......................................................................... 162
11.8.1 1-phase 1-input [C235 to C245] ................................................................................................ 162
11.8.2 2-phase 2-input [C251 to C255] ................................................................................................ 163

6

FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Table of Contents
11.9 Related Devices and Function Switching Procedures .............................................................. 164
11.9.1 Related devices ......................................................................................................................... 164
11.9.2 [Function switching] switching of allocation and functions of input terminals ............................ 165
12. Output Wiring Procedures 166
12.1 External Wiring for Relay Output Type...................................................................................... 168
12.1.1 Product life of relay contacts ..................................................................................................... 168
12.1.2 Handling of relay output............................................................................................................. 168
12.1.3 External wiring precautions ....................................................................................................... 169
12.1.4 Example of external wiring ........................................................................................................ 170
12.2 External Wiring of Transistor Output (Sink/Source) Type ......................................................... 171
12.2.1 Transistor Output Sink and Source ........................................................................................... 171
12.2.2 Handling of transistor output...................................................................................................... 172
12.2.3 External wiring precautions ....................................................................................................... 174
12.2.4 Example of external wiring ........................................................................................................ 175
12.3 External Wiring for Triac (SSR) Output Type ............................................................................ 177
12.3.1 Handling of triac output.............................................................................................................. 177
12.3.2 External wiring precautions ....................................................................................................... 178
12.3.3 Example of external wiring ........................................................................................................ 179
13. Examples of Wiring for Various Uses 180
13.1 Notes about Examples of Wiring............................................................................................... 181
13.2 Digital Switch [DSW Instructions (FNC72)/BIN Instructions (FNC19)]...................................... 182
13.2.1 When DSW instructions are used.............................................................................................. 182
13.2.2 When BIN instructions are used ................................................................................................ 185
13.3 Input Matrix [MTR Instructions (FNC 52)] ................................................................................. 186
13.4 Seven Segment with Latch [SEGL Instructions (FNC74)/BCD Instructions (FNC18)].............. 189
13.4.1 When SEGL instructions are used ............................................................................................ 189
13.4.2 When BCD instructions are used .............................................................................................. 191
14. Test Operation, Adjustment, Maintenance and Troubleshooting 193
14.1 Preparation for Test Operation.................................................................................................. 194
14.1.1 Preliminary inspection [power OFF] .......................................................................................... 194
14.1.2 Connection to built-in programming connector (RS-422) .......................................................... 194
14.1.3 Connection to built-in programming connector (USB) ............................................................... 195
14.1.4 Writing of program and program check [power ON and PLC stopped] ..................................... 196
14.2 Running and Stopping Procedures [Power ON]........................................................................ 197
14.2.1 Methods of running and stopping .............................................................................................. 197
14.2.2 Use of several running/stopping methods ................................................................................. 198
14.3 Operation and Test [Power ON and PLC Running] .................................................................. 199
14.3.1 Self-diagnostic function ............................................................................................................. 199
14.3.2 Test functions ............................................................................................................................ 199
14.3.3 Program modification function ................................................................................................... 200
14.3.4 Built-in variable analog potentiometer function.......................................................................... 200
14.4 Maintenance and Periodic Inspection ....................................................................................... 201
14.4.1 Procedures for checking model name ....................................................................................... 201
14.4.2 Periodic inspection - battery life, etc.......................................................................................... 201
14.4.3 Maintenance - product life of relay contacts ............................................................................. 202
14.5 Troubleshooting with LEDs ....................................................................................................... 204
14.5.1 POW LED [on/flashing/off]......................................................................................................... 204
14.5.2 ALM LED [on/off] ....................................................................................................................... 204
14.5.3 ERR LED [on/flashing/off].......................................................................................................... 205
14.6
Judgment by Error Codes and Representation of Error Codes ................................................ 206
14.6.1 Operation and check by GX Developer ..................................................................................... 206
14.6.2 Operation and check on display module (FX 3G -5DM) .............................................................. 207
14.6.3 Representation of errors............................................................................................................ 208
14.6.4 Error Code List and Action ........................................................................................................ 209

7