MELSEC FX Family
MITSUBISHI ELECTRIC
MITSUBISHI ELECTRIC
Programmable Logic Controllers
Beginner´s Manual
Art. no.: 166388
15082013
Version E
FX
FX1S,FX1N,
FX
3G,FX3GC,FX3GE,
FX
2N,FX2NC,
FX
3S,
3U,FX3UC
INDUSTRIAL AUTOMATION
The texts, illustration, diagrams and examples in this manual are provided
for information purposes only. They are intended as aids to help explain the
installation, operation, programming and use of the
programmable logic controllers of the
MELSEC FX
1S,FX1N,FX2N,FX2NC,FX3G,FX3GC,FX3GE,
FX3S,FX3U and FX3UC series.
If you have any questions about the installation and operation of any of the
products described in this manual please contact your local sales office or distributor (see back cover).
You can find the latest information and answers to frequently asked questions on our website at
www.mitsubishi-automation.com
.
MITSUBISHI ELECTRIC EUROPE BV reserves the right to make changes
to this manual or the technical specifications of its products at any time without notice.
© 01/2006 – 08/2013
Beginner’s Manual for the programmable logic controllers of the
MELSEC FX family FX
1S,FX1N,FX2N,FX2NC,FX3G,FX3GC,FX3GE,FX3S,FX3U und FX3UC
Art. no.: 166388
Version Revisions / Additions / Corrections
A 01/2006 pdp-tr First edition
B 01/2007 pdp-dk Addition of chapter 7
Considering of the extended product range for the base units of the FX
and 2.4.
C 07/2009 pdp-dk Consideration of the controllers of the FX
New adapter modules FX
D — — Version skipped for internal reasons
E 08/2013 pdp-dk Consideration of the FX
New adapter module FX
New intelligent function module FX
Consideration of the programming software GX Works2 FX
3U-4AD-PNK-ADP and FX3U-4AD-PTW-ADP
3GC, FX3GE and the FX3S series controllers
3U-3A-ADP
3U-4LC
3U series in chapters 2.3
3G and the FX3UC series
Safety Guidelines
Safety Guidelines
For use by qualified staff only
This manual is only intended for use by properly trained and qualified electrical technicians
who are fully acquainted with the relevant automation technology safety standards. All work
with the hardware described, including system design, installation, configuration, mainten
ance, service andtesting of the equipment,may only be performed by trained electrical techni
cians with approved qualifications who are fully acquainted with all the applicable automation
technology safety standards and regulations.Any operations or modifications to the hardware
and/or software of our products not specifically described in this manual may only be
performed by authorised Mitsubishi Electric staff.
Proper use of the products
-
-
The programmable logic controllers of the FX
FX
3S,FX3U and FX3UC series are only intended for the specific applications explicitly
described in this manual. All parameters and settings specified in this manual must be
observed. The products described have all been designed, manufactured, tested and docu
mented in strict compliance with the relevant safety standards. Unqualified modification of the
hardware or software or failure to observe the warnings on the products and in this manual
may result in serious personal injury and/or damage to property. Only peripherals and expan
sion equipment specifically recommended and approved by Mitsubishi Electric may be used
with the programmable logic controllers of the FX
FX
3GE,FX3S,FX3U and FX3UC series.
All and any other uses or application of the products shall be deemed to be improper.
Relevant safety regulations
All safety and accident prevention regulations relevant to your specific application must be
observed in the system design, installation, configuration, maintenance, servicing and testing
of these products. The regulations listed below are particularly important in this regard. This
list does not claim to be complete, however; you are responsible for being familiar with and
conforming to the regulations applicable to you in your location.
쎲
VDE Standards
–
VDE 0100
Regulations for the erection of power installations with rated voltages below 1000 V
–
VDE 0105
Operation of power installations
–
VDE 0113
Electrical installations with electronic equipment
–
VDE 0160
Electronic equipment for use in power installations
–
VDE 0550/0551
Regulations for transformers
–
VDE 0700
Safety of electrical appliances for household use and similar applications
–
VDE 0860
Safety regulations for mains-powered electronic appliances and their accessories for
household use and similar applications.
1S,FX1N,FX2N,FX2NC,FX3G,FX3GC,FX3GE,
1S,FX1N,FX2N,FX2NC,FX3G,FX3GC,
-
-
쎲
Fire safety regulations
FX Beginners Manual I
Safety Guidelines
쎲
Safety warnings in this manual
In this manual warnings that are relevant for safety are identified as follows:
DANGER:
Failure to observe the safety warnings identified with this symbol can result in health
P
E
and injury hazards for the user.
WARNING:
Failure to observe the safety warnings identified with this symbol can result in damage
to the equipment or other property.
Accident prevention regulations
VBG Nr.4
–
Electrical systems and equipment
II MITSUBISHI ELECTRIC
P
Safety Guidelines
General safety information and precautions
The following safety precautions are intended as a general guideline for using PLC systems
together with other equipment. These precautions must always be observed in the design,
installation and operation of all control systems.
DANGER:
Observe all safety and accident prevention regulations applicable to your spe
쎲
cific application. Always disconnect all power supplies before performing
installation and wiring work or opening any of the assemblies, components and
devices.
Assemblies, components and devices must always be installed in a shockproof
쎲
housing fitted with a proper cover and fuses or circuit breakers.
Devices with a permanent connection to the mains power supply must be inte
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grated in the building installations with an all-pole disconnection switch and a
suitable fuse.
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-
Check power cables and lines connected to the equipment regularly for breaks
쎲
and insulation damage. If cable damage is found immediately disconnect the
equipment and the cables from the power supply and replace the defective
cabling.
Before using the equipment for the first time check that the power supply rating
쎲
matches that of the local mains power.
쎲
Take appropriate steps to ensure that cable damage or core breaks in the signal
lines cannot cause undefined states in the equipment.
쎲
You are responsible for taking the necessary precautions to ensure that programs interrupted by brownouts and power failures can be restarted properly
and safely. In particular, you must ensure that dangerous conditions cannot
occur under any circumstances, even for brief periods.
쎲
EMERGENCY OFF facilities conforming to EN 60204/IEC 204 and VDE 0113
must remain fully operative at all times and in all PLC operating modes. The
EMERGENCY OFF facility reset function must be designed so that it cannot
ever cause an uncontrolled or undefined restart.
쎲
You must implement both hardware and software safety precautions to prevent
the possibility of undefined control system statescaused by signal line cable or
core breaks.
쎲
When using modules always ensure that all electrical and mechanical specifi
cations and requirements are observed exactly.
-
FX Beginners Manual III
Safety Guidelines
IV MITSUBISHI ELECTRIC
Contents
1 Introduction
1.1 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2 More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
2 Programmable Logic Controllers
2.1 What is a PLC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.2 How PLCs Process Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.3 The MELSEC FX Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.4 Selecting the Right Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Contents
2.5 Controller Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.5.1 Input and output circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.5.2 Layout of the MELSEC FX
2.5.3 Layout of the MELSEC FX
2.5.4 Layout of the MELSEC FX
2.5.5 Layout of the MELSEC FX
2.5.6 Layout of the MELSEC FX
2.5.7 Layout of the MELSEC FX
2.5.8 Layout of the MELSEC FX
2.5.9 Layout of the MELSEC FX
2.5.10Layout of the MELSEC FX
2.5.11Layout of the MELSEC FX
1S base units . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
1N base units . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2N base units . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2NC base units . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
3G base units . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
3GC base units . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
3GE base units . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
3S base units . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
3U base units . . . . . . . . . . . . . . . . . . . . . . . . . .2-12
3UC base units . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.5.12PLC components glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13
FX Beginners Manual V
Contents
3 An Introduction to Programming
3.1 Structure of a Program Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.2 Bits, Bytes and Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.3 Number Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.4 The Basic Instruction Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.4.1 Starting logic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3.4.2 Outputting the result of a logic operation . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4.3 Using switches and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
3.4.4 AND operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
3.4.5 OR operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
3.4.6 Instructions for connecting operation blocks . . . . . . . . . . . . . . . . . . . . . . 3-12
3.4.7 Pulse-triggered execution of operations . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.4.8 Setting and resetting devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.9 Storing, reading and deleting operation results . . . . . . . . . . . . . . . . . . . . 3-17
3.4.10Generating pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-18
3.4.11Master control function (MC and MCR instructions). . . . . . . . . . . . . . . . . 3-19
3.4.12Inverting the result of an operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20
3.5 Safety First! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21
3.6 Programming PLC Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23
3.6.1 An alarm system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23
3.6.2 A rolling shutter gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-28
4 Devices in Detail
4.1 Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.2 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.2.1 Special relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.3 Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
4.4 Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
4.5 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12
4.5.1 Data registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12
4.5.2 Special registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
4.5.3 File registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14
VI MITSUBISHI ELECTRIC
4.6 Programming Tips for Timers and Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.6.1 Specifying timer and counter setpoints indirectly . . . . . . . . . . . . . . . . . . . 4-15
4.6.2 Switch-off delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
4.6.3 ON- and OFF-Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19
4.6.4 Clock signal generators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
5 More Advanced Programming
5.1 Applied Instructions Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5.1.1 Entering applied instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.2 Instructions for Moving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
5.2.1 Moving individual values with the MOV instruction . . . . . . . . . . . . . . . . . . . 5-8
5.2.2 Moving groups of bit devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
5.2.3 Moving blocks of data with the BMOV instruction . . . . . . . . . . . . . . . . . . .5-11
Contents
5.2.4 Copying source devices to multiple destinations (FMOV). . . . . . . . . . . . . 5-12
5.2.5 Exchanging data with special function modules . . . . . . . . . . . . . . . . . . . . 5-13
5.3 Compare Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16
5.3.1 The CMP instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16
5.3.2 Comparisons within logic operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5.4 Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21
5.4.1 Addition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-22
5.4.2 Subtraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-23
5.4.3 Multiplication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-24
5.4.4 Division . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-25
5.4.5 Combining math instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-26
6 Expansion Options
6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6.2 Available Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6.2.1 Modules for adding more digital inputs and outputs . . . . . . . . . . . . . . . . . . 6-1
6.2.2 Analog I/O modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6.2.3 Communications modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2.4 Positioning modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2.5 HMI control and display panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
FX Beginners Manual VII
Contents
7 Processing Analog Values
7.1 Analog Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7.1.1 Criteria for selecting analog modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
7.1.2 Adapter boards, special adapters and special function modules . . . . . . . . 7-4
7.2 List of Analog Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
Index
VIII MITSUBISHI ELECTRIC
Introduction About this Manual
1 Introduction
1.1 About this Manual
This manual will help you to familiarise yourself with the use of the MELSEC FX family of pro
grammable logic controllers. It is designed for users who do not yet have any experience with
programming programmable logic controllers (PLCs).
Programmers who already have experience with PLCs from other manufacturers can also use
this manual as a guide for making the transition to the MELSEC FX family.
The symbol "쏔" is used as a placeholder to identify different controllers in the same range.For
example, the designation "FX
begins with FX
FX
1S-10 MT-ESS/UL.
1S-10, i.e. FX1S-10MR-DS, FX1S-10 MR-ES/UL, FX1S-10 MT-DSS and
1.2 More Information
You can find more detailed information on the individual products in the series in the operating
and installation manuals of the individual modules.
See the MELSEC FX Family Catalogue, art. no. 167840, for a general overview of all the controllers in the MELSEC FX family. This catalogue also contains information on expansion
options and the available accessories.
For an introduction to using the programming software package see the various beginner’s or
training manuals for the software in use.
You can find detailed documentation of all programming instructions in the Programming Manual for the MELSEC FX family, art. no. 132738.
-
1S-10쏔-쏔쏔" is used to refer to all controllers whose name
The communications capabilities and options of the MELSEC FX controllers are documented
in detail in the Communications Manual, art. no. 070143.
All Mitsubishi manuals and catalogues can be downloaded free of charge from the Mitsubishi
website at
www.mitsubishi-automation.com
.
FX Beginners Manual 1–1
More Information Introduction
1–2 MITSUBISHI ELECTRIC
Programmable Logic Controllers What is a PLC?
2 Programmable Logic Controllers
2.1 What is a PLC?
In contrast to conventional controllers with functions determined by their physical wiring the
functions of programmable logic controllers orPLCs are defined by a program. PLCs also have
to be connected to the outside world withcables,but the contents of their program memory can
be changed at any time to adapt their programs to different control tasks.
Programmable logic controllers input data, process it and then output the results. This process
is performed in three stages:
an input stage,
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a processing stage
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and
an output stage
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Programmable Logic Controller
Input
Switch
Input Stage
The input stage
The input stage passes control signals from switches, buttons or sensors on to the processing
stage.
The signals from these components aregenerated as part of the control process and are fed to
the inputs as logical states. The input stage passes them on to the processing stage in a
pre-processed format.
The processing stage
Processing Stage
Output
Contactors
Output Stage
In the processing stage the pre-processed signals from the input stage are processed and
combined with the help of logical operations and other functions. The program memory of the
processing stage is fullyprogrammable. The processing sequence canbe changed at any time
by modifying or replacing the stored program.
The output stage
The results of the processing of the input signals by the program are fed to the output stage
where they control connected switchable elements such as contactors, signal lamps, solenoid
valves and so on.
FX Beginners Manual 2–1
How PLCs Process Programs Programmable Logic Controllers
....
....
....
2.2 How PLCs Process Programs
A PLC performs its tasks by executing a program that is usually developed outside the control
ler and then transferred to the controller’s program memory. Before you start programming it is
useful to have a basic understanding of how PLCs process these programs.
A PLC program consists of a sequence of instructions that control the functions of the control
ler.The PLC executes these control instructions sequentially, i.e. one after another.The entire
program sequence is cyclical, which means that it is repeated in a continuous loop. The time
required for one program repetition is referred to as the program cycle time or period.
Process image processing
The program in the PLC is not executed directly on the inputs and outputs, but on a “process
image” of the inputs and outputs:
Switch on PLC
Delete output memory
Input signals
Input terminals
Poll inputs and signal states
and save them in the process
image of the inputs
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PLC program
Process image
of inputs
Process image
of outputs
Output terminals
Output signals
Instruction 1
Instruction 2
Instruction 3
Instruction n
Transfer process image
to outputs
Input process image
At the beginning of each program cycle the system polls the signal states of the inputs and
stores them in a buffer, creating a “process image” of the inputs.
2–2 MITSUBISHI ELECTRIC
Programmable Logic Controllers How PLCs Process Programs
M6
M2
M1 M8013
4
X000 X001
0
9
M0
Y000
M0
Y001
Program execution
After this the program is executed, during which the PLC accesses the stored states of the
inputs in the process image.This means that any subsequent changes in the input states will
not be registered until the next program cycle!
The program is executed from top to bottom, in the order in which the instructions were pro
grammed.Results of individual programming steps are stored and can be used during the cur
rent program cycle.
Program execution
Store result
Control output
Process stored result
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Output process image
Results of logical operations that arerelevant for the outputsare stored in an output buffer – the
output process image. The output process image is stored in the output buffer until the buffer is
rewritten. After the values have been written to the outputs the program cycle is repeated.
Differences between signal processing in the PLC and in hard-wired controllers
In hard-wired controllers the program is defined by the functional elements and their connec
tions (the wiring). All control operations are performed simultaneously (parallel execution).
Every change in an input signal state causes an instantaneous change in the corresponding
output signal state.
In a PLC it is not possible to respond to changes in input signal states until the next program
cycle after the change.Nowadays this disadvantage is largely compensated by very short pro
gram cycle periods. The duration of the program cycle period depends on the number and type
of instructions executed.
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FX Beginners Manual 2–3
The MELSEC FX Family Programmable Logic Controllers
2.3 The MELSEC FX Family
The compact micro-controllers of the MELSEC FX series provide the foundation for building
economical solutions for small to medium-sized control and positioning tasks requiring 10 to
256 integrated inputs and outputs in applications in industry and building services.
With the exception of the FX
pace with the changes in the application and the user’s growing requirements.
Network connections are also supported. This makes it possible for the controllers of the FX
family to communicate with other PLCs and controller systems and HMIs (Human-Machine
Interfaces and control panels). The PLC systems can be integrated both in MITSUBISHI net
works as local stations and as master or slave stations in open networks like PROFIBUS DP.
In addition to this you can also build multi-drop and peer-to-peer networks with the controllers
of the MELSEC FX family.
The FX
ities, making them the right choice for complex applications and tasks requiring special func
tions like analog-digital and digital-analog conversion and network capabilities.
All the controllers in the series are part of the larger MELSEC FX family and are fully compati
ble with one another.
Specifications
Max integrated
I/O points
Expansion capability
(max. possible I/Os)
Program memory
(steps)
Cycle time per
log. instruction (ms)
No. of instructions
(standard / step ladder /
special function)
Max. special function
modules connectable
1S all the controllers of the FX series can be expanded to keep
1N,FX2N,FX3G,FX3GC,FX3GE,FX3S,FX3U or FX3UC have modular expansion capabil
1S FX1N FX2N FX2NC FX3G FX3GC FX3GE FX3S FX3U FX3UC
FX
30 60 128 96 60 32 40 30 128 96
34 132 256 256 256 256 256 —* 384 384
2000 8000 16000 16000 32000 32000 32000 4000 64000 64000
0.55 –
0.7
27 / 2 /8527 / 2 /8927 / 2 /
—284
0.55 –
0.7
0.08 0.08 0.21/0.42 0.21/0.42 0.21/0.42 0.21 0.065 0.065
107
27 / 2 /
107
29 / 2 /
124
8 right
4 left
29 / 2 /
122
8 right
4 left
29 / 2 /
122
8 right
2 left
29 / 2 /
116
2 left
27 / 2 /
218
8 right
10 left
29 / 2 /
218
8 right
6 left
-
-
-
-
*
Not expandable
2–4 MITSUBISHI ELECTRIC
Programmable Logic Controllers Selecting the Right Controller
2.4 Selecting the Right Controller
The base units of the MELSECFX family are available in a number of different versions with dif
ferent power supply options and output technologies. You can choose between units designed
for power supplies of100–240 V AC, 24 V DC or 12–24 VDC, and between relay and transistor
outputs.
Series I/Os Type
FX
1S
1N
FX
2N
FX
2NC
FX
3G
FX
FX
3GC 32
FX3GE
FX
3S
3U
FX
3UC
FX
10
14
20
30
14
24
40
60
16
32
48
64
80
128
16
32
64
96
14
24
40
60
24 FX3GE-24MR/ES 16 8
40 FX
10
14
20
30
16
32
48
64
80
128
16
32
64
96
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
FX
No. of
inputs
1S-10 M쏔-쏔쏔
1S-14 M쏔-쏔쏔
1S-20 M쏔-쏔쏔
1S-30 M쏔-쏔쏔
1N-14 M쏔-쏔쏔
1N-24 M쏔-쏔쏔
1N-40 M쏔-쏔쏔
1N-60 M쏔-쏔쏔
2N-16 M쏔-쏔쏔
2N-32 M쏔-쏔쏔
2N-48 M쏔-쏔쏔
2N-64 M쏔-쏔쏔
2N-80 M쏔-쏔쏔
2N-128 M쏔-쏔쏔
2NC-16 M쏔-쏔쏔
2NC-32 M쏔-쏔쏔
2NC-64 M쏔-쏔쏔
2NC-96 M쏔-쏔쏔
3G-14 M쏔/쏔쏔쏔
3G-24 M쏔/쏔쏔쏔
3G-40 M쏔/쏔쏔쏔
3G-60 M쏔/쏔쏔쏔
3GC-32MT/D쏔쏔
3GE-40MR/ES 16 14
3S-10 M쏔/ES쏔
3S-14 M쏔/ES쏔
3S-20 M쏔/ES쏔
3S-30 M쏔/ES쏔
3U-16 M쏔-쏔쏔
3U-32 M쏔-쏔쏔
3U-48 M쏔-쏔쏔
3U-64 M쏔-쏔쏔
3U-80 M쏔-쏔쏔
3U-128 M쏔-쏔쏔
3UC-16 M쏔/쏔쏔쏔
3UC-32 M쏔/쏔쏔쏔
3UC-64 M쏔/쏔쏔쏔
3UC-96 M쏔/쏔쏔쏔
68
86
12 8
16 14
86
14 10
24 16
36 24
88
16 16
24 24
32 32
40 40
64 64
88
16 16
32 32
48 48
86
14 10
24 16
36 24
16 16 24 V DC Transistor
64
86
12 8
16 14
88
16 16
24 24
32 32
40 40
64 64 100 – 240 V AC
88
16 16
32 32
48 48
No. of
outputs
Power supply Output type
24 V DC
or
100 – 240 V AC
12 – 24 V DC
or
100 – 240 V AC
24 V DC
or
100 – 240 V AC
24 V DC
Transistor
or relay
Transistor
or relay
Transistor
or relay
Transistor
or relay
Optional
100 – 240 V AC
Transistor
or relay
100 – 240 V AC Relay
Optional
100 – 240 V AC
Transistor
or relay
24 V DC
or
100 – 240 V AC
Transistor
or relay
Transistor
or relay
24 V DC Transistor
-
FX Beginners Manual 2–5
Selecting the Right Controller Programmable Logic Controllers
To choose the right controller for your application you need to answer the following questions:
How many signals (external switch contacts, buttons and sensors)do you need to input?
쎲
What types of functions do you need to switch, and how many of them are there?
쎲
What power supply options are available?
쎲
How high are the loads that the outputs need to switch? Choose relay outputs for switching
high loads and transistor outputs for switching fast, trigger-free switching operations.
2–6 MITSUBISHI ELECTRIC
Programmable Logic Controllers Controller Design
0123
4567
0123
45
IN
OUT
POWER
FX -14MR
1S
RUN
ERROR
X7
X5
X3
X1
S/S
X6
X4
X2
X0
N
L
100-240
VAC
14MR
-ES/UL
Y4
Y2
Y1
Y0
COM0
COM1
COM2
Y3
Y5
24V
0V
MITSUBISHI
2.5 Controller Design
All the controllers in the series have the same basic design. The main functional elements and
assemblies are described in the glossary in section 2.5.7.
2.5.1 Input and output circuits
The input circuits use floating inputs. They are electrically isolated from the other circuits of
the PLC with optical couplers. The output circuits use either relay or transistor output techno
logy.The transistor outputs are also electrically isolated from the other PLC circuits withoptical
couplers.
-
The switching voltage at all the digital inputs must have a certain value (e.g.24 V DC). This volt
age can be taken from the PLC’s integrated power supply unit. If the switching voltage at the
inputs is less than the rated value (e.g. <24 V DC) then the input will not be processed.
The maximum output currents are 2 A on 250 V three-phase AC and non-reactive loads with
relay outputs and 0.5 A on 24 V DC and non-reactive loads.
2.5.2 Layout of the MELSEC FX1S base units
Mounting hole
Power supply
connection
Interface for expansion
adapter boards
Cutout for adapters or
control panel
2 analog potentiometers
Connection for
programming units
Connection for the
service power supply
Terminals for
digital outputs
-
Protective cover
Terminal cover
Terminals for
digital inputs
LEDs for indicating
the input status
RUN/STOP switch
LEDs for indicating
the operating status
LEDs for indicating
the output status
Protective cover
FX Beginners Manual 2–7
Controller Design Programmable Logic Controllers
0123
4567
8 9 10 11
1213 14 15
0123
4567
1011
IN
OUT
POWER
FX -24MR
1N
RUN
ERROR
100-240
VAC
X7
X11
X13
X15
X5
X3
X1
S/S
X6
X10
X12
X14
X4
X2
X0
N
L
24MR
-ES/UL
Y10
Y6
Y5
Y3
COM3
Y4
COM4
Y7
Y11
COM2
COM1
COM0
24+
Y2
Y1
Y0
0V
MITSUBISHI
2.5.3 Layout of the MELSEC FX1N base units
Protective cover
Terminals for
Terminal cover
Mounting hole
digital inputs
Connection of the
power supply
RUN/STOP switch
Slot for memory cassettes,
adapters and displays
2 analog
potentiometers
Connection for
programming units
Connection for the
service power supply
Terminals for
digital outputs
Terminal cover
Protective cover
2.5.4 Layout of the MELSEC FX
Connection for the
service power supply
Extension bus
LEDs for indicating
the input status
LEDs for indicating
the operating status
LEDs for indicating
the output status
Housing cover
Lid
2N base units
Terminal cover
Mounting hole
Connection for
expansion adapter boards
Memory battery
Connection for
programming units
RUN/STOP switch
Removable terminal
strip for digital outputs
Housing cover
Slot for memory
cassettes
Terminals for
digital inputs
LEDs for indicating
the input status
LEDs for indicating
the operating status
Connection for
extensions
Protective cover des
Erweiterungsbusses
LEDs for indicating
the output status
Protective cover
2–8 MITSUBISHI ELECTRIC
Programmable Logic Controllers Controller Design
POWER
RUN
BATT
ERROR
X0
1
2
3
X4
5
6
7
Y0
1
2
3
Y4
5
6
7
RUN
STOP
MITSUBISHI
FX -16MR-T-DS
2
N
C
MELSEC
COM
X7
X6
X5
X4
•
COM
X3
X2
X1
X0
Y4
•
COM1
Y3
Y2
Y1
Y0
2.5.5 Layout of the MELSEC FX2NC base units
Protective cover
Memory battery
Battery
compartment
RUN/STOP switch
Operating status LEDs
2nd interface
for CNV adapter
Cover
Memory cassette
(optional)
Memory cassette slot
Terminals for
digital inputs
Terminals for
digital outputs
2.5.6 Layout of the MELSEC FX
Extension bus
(on side)
Protective cover
for expansion bus
LEDs for indicating
the output status
LEDs for indicating
the input status
Connector for
terminal strips
3G base units
Protective cover
Slots for memory
cassette, display and
expansion adapter
2 analog setpoint
potentiometers
RUN/STOP switch
Mount for
optional battery
Connection for program
ming unit (RS422)
Connection for program
ming unit (USB)
Cover for programming
unit connections, poten
tiometer and
RUN/STOP switch
Cover of the left
expansion slot
Shock protection
Terminal strip for
digital inputs
LEDs for indicating
input status
LEDs for indicating
operating mode
Cover for expansion
-
bus
LEDs for indicating
output status
-
Output terminals
Shock protection
-
Protective cover
Cover of the right
expansion slot and
the optional battery
FX Beginners Manual 2–9
Controller Design Programmable Logic Controllers
2.5.7 Layout of the MELSEC FX3GC base units
LEDs for indicating
the operating status
Protective cover for
Peripheral device connector
(USB)
LEDs for indicating
the input status
Special adapter connector
cover
Special adapter
connector
Terminals for digital inputs
expansion bus
RUN/STOP-Schalter
Peripheral device connector
(RS-422)
LEDs for indicating the
output status
Terminals for digital outputs
Battery connector
Battery
2.5.8 Layout of the MELSEC FX
Slot for memory
cassette, display and
expansion adapter
Terminals for analog inputs
2 analog potentiometers
RUN/STOP switch
Special adapter connector
RS-422 Interface
USB Interface
RJ45 connector
(10BASE-T/100BASE-TX)
Terminals for analog
output
Battery cover
3GE base units
Protective cover
Shock protection
Terminals for digital
inputs
LEDs for indicating
input status
Battery holder
LEDs for indicating
operating mode
Cover for expansion
bus
LEDs for output status
Terminals for digital
outputs
Shock protection
Protective cover
Cover for interfaces,
potentiometer and
RUN/STOP switch
Cover of the expansion
slot and the optional
battery
2–10 MITSUBISHI ELECTRIC
Programmable Logic Controllers Controller Design
2.5.9 Layout of the MELSEC FX3S base units
Protective cover
Shock protection
Power supply terminals
Slot for memory cassette and
expansion adapter
LEDs for input status
LEDs for indicating
operating mode
LEDs for indicating
output status
Terminals for digital outputs
Terminals for digital inputs
2 analog potentiometers
RUN/STOP switch
USB Interface
RS-422 Interface
Cover for interfaces, potentiometer and RUN/STOP switch
Cover of the expansion slot
Shock protection
Protective cover
FX Beginners Manual 2–11
Controller Design Programmable Logic Controllers
2.5.10 Layout of the MELSEC FX3U base units
Battery cover
Memory battery
Installation place for the
FX3U-7DM display
Blind cover for
expansion board
RUN/STOP switch
Connection for
programming unit
To p c o ve r
(used if FX3U-7DM
is not installed)
Protective cover
Terminal cover
Terminals for
digital inputs
LEDs for indicating
the input status
LEDs for indicating
the operating status
Protective cover for
expansion bus
LEDs for indicating
the output status
Output terminals
Terminal cover
Protective cover
2.5.11 Layout of the MELSEC FX
RUN/STOP switch
LEDs for indicating
operating mode
Slot for memory
cassettes
Memory cassette
(optional)
Cover of the adapter
board terminal
3UC base units
LEDs for indicating
input status
LEDs for indicating
output status
Protective cover for
expansion bus
Expansion bus
(to the side)
Connection for
programming unit
Buffer battery
Cover for battery
compartment
Te rmi n al s f o r
digital outputs
Te rmi n al s f o r
digital inputs
2–12 MITSUBISHI ELECTRIC
Programmable Logic Controllers Controller Design
2.5.12 PLC components glossary
The following table describes the meaning and functionality of the single components und
parts of a Mitsubishi PLC.
Component Description
Connection for
expansion
adapter boards
Connection for pro
gramming units
EEPROM
Memory cassette slot
Extension bus
Analog
potentiometers
Service power supply
Digital inputs
Digital outputs
LEDs for indicating
the input status
LEDs for indicating
the output status
LEDs for indicating
the operating status
Memory battery
RUN/STOP switch
-
Optional expansion adapter boards can be connected to this interface. A variety of differ
ent adapters are available for all FX lines (except the FX
adapters extend the capabilities of the controllers with additional functions or communica
tions interfaces. The adapter boards are plugged directly into the slot.
This connection can be used for connecting the FX-20P-E hand-held programming unit or
an external PC or notebook with a programming software package (e.g. GX Works2 FX).
Read/write memory in which the PLC program can be stored and read with the program
ming software. This solid-state memory retains its contents without power, even in the
event of a power failure, and does not need a battery.
Slot for optional memory cassettes. Inserting a memory cassette disables the controller’s
internal memory – the controller will then only execute the program stored in the cassette.
Both additional I/O expansion modules and special function modules that add additional
capabilities to the PLC system can be connected here. See chapter 6 for an overview of
the available modules.
The analog potentiometers are used for setting analog setpoint values. The setting can be
polled by the PLC program and used for timers, pulse outputs and other functions (see
Section 4.6.1).
The service power supply (not for FX
DC power supply source for the input signals and the sensors. The capacity of this power
supply depends on the controller model (e.g. FX
400 mA; FX
2N-64M쏔-쏔쏔: 460 mA)
FX
The digital inputs are used for inputting control signals from the connected switches, buttons or sensors. These inputs can read the values ON (power signal on) and OFF (no
power signal).
You can connect a variety of different actuators and other devices to these outputs,
depending on the nature of your application and the output type.
These LEDs show which inputs are currently connected to a power signal, i.e. a defined
voltage. When a signal is applied to an input the corresponding LED lights up, indicating
that the state of the input is ON.
These LEDs show the current ON/OFF states of the digital outputs. These outputs can
switch a variety of different voltages and currents depending on the model and output
type.
The LEDs RUN, POWER and ERROR show the current status of the controller. POWER
shows that the power is switched on, RUN lights up when the PLC program is being exe
cuted and ERROR lights up when an error or malfunction is registered.
The battery protects the contents of the MELSELC PLC’s volatile RAM memory in the
event of a power failure (FX
latched ranges for timers, counters and relays. In addition to this it also provides power for
the integrated real-time clock when the PLC’s power supply is switched off.
MELSEC PLCs have two operating modes, RUN and STOP. The RUN/STOP switch
allows you to switch between these two modes manually.
In RUN mode the PLC executes the program stored in its memory.
In STOP mode program execution is stopped.
2N-16M쏔-쏔쏔 through FX2N-32M쏔-쏔쏔: 250 mA, FX2N-48M쏔-쏔쏔 through
2N, FX2NC, FX3GC, FX3U and FX3Uc only). It protects the
2NC, FX3GC and FX3UC) provides a regulated 24V
2NC and the FX3GC). These
1S, FX1N, FX3G, FX3GE and FX3S:
-
-
-
-
FX Beginners Manual 2–13
Controller Design Programmable Logic Controllers
2–14 MITSUBISHI ELECTRIC
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