SAFETY PRECAUTIONS (Read these precautions before use.) Before using this product, please read this manual and the relevant manuals introduced in this manual carefully and pay full attention to safety in order to handle the product correctly. This manual classifies the safety precautions into two categories: [ WARNING] and [ CAUTION].
Page 4
[DESIGN PRECAUTIONS] CAUTION When an inductive load such as a lamp, heater, or solenoid valve is controlled, a large current (approximately ten times greater than normal) may flow when the output is turned from off to on. Take proper measures so that the flowing current dose not exceed the value corresponding to the maximum load specification of the resistance load.
Page 5
[INSTALLATION PRECAUTIONS] WARNING 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. Use the product within the generic environment specifications described in the User's Manual (Hardware) for the CPU module to be used.
Page 6
[WIRING PRECAUTIONS] WARNING 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, provided as an accessory, before turning on the power or initiating operation after installation or wiring work.
Page 7
[WIRING PRECAUTIONS] CAUTION Do not supply power to the [24+] and [24V] terminals (24 V DC service power supply) on the CPU module or extension modules. Doing so may cause damage to the product. Perform class D grounding (grounding resistance: 100 or less) to the grounding terminal on the CPU module or extension modules with a wire 2 mm or thicker.
Page 8
Do not disassemble or modify the PLC. Doing so may cause fire, equipment failures, or malfunctions. For repair, contact your local Mitsubishi Electric representative. After the first use of the SD memory card, do not insert/remove the memory card more than 500 times.
Page 9
[OPERATION PRECAUTIONS] CAUTION Construct an interlock circuit in the program so that the whole system always operates on the safe side before executing the control (for data change) of the PLC in operation. Read the manual thoroughly and ensure complete safety before executing other controls (for program change, parameter change, forcible output and operation status change) of the PLC in operation.
FX3 series to the MELSEC iQ-F series. When replacing the MELSEC FX3 series with the MELSEC iQ-F series, the following items need to be considered beforehand: the replacement procedure, installation location, specifications comparison of the existing module and the new module, method to replace the network.
Describes the system configuration, parameter settings, and online operations of <SH-081215ENG> GX Works3. Transition from MELSEC FX3 Series to MELSEC iQ-F Series Handbook Describes the transition from the MELSEC FX3 series to the MELSEC iQ-F series. <SH-082703ENG> (This manual) MELSEC FX3 series Manual name <manual number>...
TERMS Unless otherwise specified, this manual uses the following terms. Term Description Engineering tool The product name of the software package for the MELSEC programmable controllers SD memory card An abbreviation for Secure Digital Memory Card. Device that stores data using flash memory. GENERIC TERMS AND ABBREVIATIONS Unless otherwise specified, this manual uses the following generic terms and abbreviations.
FX5UJ-40MT/ESS, FX5UJ-60MR/ES, FX5UJ-60MT/ES, FX5UJ-60MT/ESS, FX5UJ-24MR/DS, FX5UJ-24MT/DS, FX5UJ-24MT/DSS, FX5UJ-40MR/DS, FX5UJ-40MT/DS, FX5UJ-40MT/DSS, FX5UJ-60MR/DS, FX5UJ-60MT/DS, and FX5UJ-60MT/DSS A generic term for Mitsubishi Electric Graphic Operation Terminal GOT1000 and GOT2000 series GX Works3 The product name of the software package, SWnDND-GXW3, for the MELSEC programmable controllers (The 'n' represents a version.)
OUTLINE Outline of the MELSEC iQ-F Series Designed on the concepts of outstanding performance, superior drive control and user centric programming, Mitsubishi Electric MELSEC-F Series has been reborn as the MELSEC iQ-F Series. From stand alone use to networked system applications, MELSEC iQ-F Series brings your business to the next level of industry.
Improved programming environment User-friendly programming software (GX Works3) System design with a convenient parts library With GX Works3, designing a system is as easy as preparing the module configuration diagram by dragging and dropping selected parts. Auto-generation of module parameters When preparing the module configuration diagram, simply double-click the module to automatically generate the module parameters.
Selection and replacement of the models The CPU modules and extension modules of the MELSEC FX3 series can be replaced by selecting models from the MELSEC iQ-F series as the successor models that match the system. Select models according to the following selection table.
REPLACEMENT FROM FX3G TO FX5S Outline The FX5S is equipped with a built-in USB (Mini-B) connector and built-in Ethernet port as standard. This module condenses high basic performance features, such as positioning and IoT functions, into a compact size. This allows users to configure systems in a simpler and easier manner.
Selection of Substitute Models Recommended substitute models CPU modules (FX3G FX5S) The recommended substitute models of the FX5S corresponding to the FX3G are shown below. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes...
Page 22
Extension devices (FX3G FX5S) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3G to FX5S. If there are not any substitute models with the same function as the existing model, check the "Special notes" and consider re- configuring the system.
Expansion board Current model Recommended substitute Special notes model FX3G-4EX-BD No recommended substitute models FX3G-2EYT-BD No recommended substitute models FX3G-2AD-BD No recommended substitute models FX3G-1DA-BD No recommended substitute models FX3G-232-BD FX5-232-BD FX3G-485-BD FX5-485-BD FX3G-485-BD-RJ FX5-485-BD The wiring must be replaced from the RJ45 connector to the European terminal block.
Precautions regarding the hardware Comparison of the FX3G and FX5S and precautions for replacement The following list shows precautions regarding the hardware. Check details in the manuals of each model when replacing existing models. Key hardware differences and replacement precautions regarding FX3G and FX5S Item Difference Precautions...
External dimensions When replacing the modules, be aware of external dimensions differences between FX3G and FX5S. • FX3G External color: Munsell 0.08GY/7.64/0.81 2-φ4.5-diam mounting hole Top cover: Munsell N1.5 Unit: mm The terminal block uses M3 terminal screws. A 35-mm width DIN rail can be installed. W1 (mounting hole pitch) Model name W (mm)
Page 26
Differences and precautions regarding the drive power supply of the output section of the FX3G and FX5S • Output section power supply voltage consolidation When replacing the FX3G with the FX5S, the power supplies must be consolidated if a separate power supply has been installed for one output common terminal of the FX3G.
Conversion of the Projects When converting FX3G projects to FX5S projects, use GX Works3. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. Operation method for replacing projects To convert FX3G projects to FX5S projects, perform operations in GX Works3. Conversion of the projects Write with FX5S CPU module...
Operating procedure Start up GX Works3. Open the FX3G project. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. The following selection screen of the new module type is shown. Select the new module type and press the [Execute] button.
Page 29
Check the contents of the module change result in the "Output window". Output window Precautions • When projects are converted, the program instructions and devices may be changed. Check the contents of the program. Parameters other than the CC-Link network parameters will be deleted.
Precautions when converting the projects • When converting FX3G projects using GX Works3, be aware that the program (instructions and devices) may be changed. • When converting projects, the number of steps may increase and writing to the FX5S may fail. Check the number of steps after conversion.
Precautions when replacing other functions Precautions when using the high-speed counters When the high-speed counters (C235 to C255) are used with the FX3G, they will not operate just by switching to the FX5S. It is necessary to set the FX3 Series compatible high-speed counters by the parameter and change the program. For the setting procedure, refer to the following.
Set the function of the high-speed counters used with the FX3G. Set the counter device of the FX3 series compatible, the input comparison enable/disable of preset input, and the control switch of preset input. Changing the program Change the high-speed counter program by referring to the following program example. [Example of program] K10000 C235...
Page 33
Precautions when using the routine timer When the routine timer (T192 to T199) is used with the FX3G, it will not operate just by switching to the FX5S. The routine timer must be set by the parameter. For the setting procedure, refer to the following. Parameter setting procedure of the poutine timer Set the use of the routine timer and the start device number.
Page 34
Serial communication channel assignment (RS-485, RS-232C) When the FX3G is replaced with the FX5S, the assignment of communication channels that can be used changes. Change the communication channels specified in instructions and parameter settings according to the specifications. FX3G communication channel assignment •...
Page 35
FX5S communication channel assignment A serial port with up to two channels can be connected using a communication board and a communication adapter. The communication channel assignments are fixed regardless of the system configuration. The configurable combinations are shown below. [Configuration example 1] [Configuration example 2] Using a communication board and a communication adapter...
Replacement of the PLC The main points to consider during replacement of the CPU module and extension modules are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
REPLACEMENT FROM FX3GE TO FX5S Outline The FX5S is equipped with a built-in USB (Mini-B) connector and built-in Ethernet port as standard. This module condenses high basic performance features, such as positioning and IoT functions, into a compact size. This allows users to configure systems in a simpler and easier manner.
Selection of Substitute Models Recommended substitute models CPU modules (FX3GE FX5S) The recommended substitute models of the FX5S corresponding to the FX3GE are shown below. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes...
Page 40
Extension devices (FX3GE FX5S) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3GE to FX5S. If there are not any substitute models with the same function as the existing model, check the "Special notes" and consider re- configuring the system.
Expansion board Current model Recommended substitute Special notes model FX3G-4EX-BD No recommended substitute models FX3G-2EYT-BD No recommended substitute models FX3G-2AD-BD No recommended substitute models FX3G-1DA-BD No recommended substitute models FX3G-232-BD FX5-232-BD FX3G-485-BD FX5-485-BD FX3G-485-BD-RJ FX5-485-BD The wiring must be replaced from the RJ45 connector to the European terminal block.
Precautions regarding the hardware Comparison of the FX3GE and FX5S and precautions for replacement The following list shows precautions regarding the hardware. Check details in the manuals of each model when replacing existing models. Key hardware differences and replacement precautions regarding FX3GE and FX5S Item Difference Precautions...
External dimensions When replacing the modules, be aware of external dimensions differences between FX3GE and FX5S. • FX3GE External color: Munsell 0.08GY/7.64/ 2-I4.5 mounting hole 0.81 Top cover: Munsell N1.5 Unit: mm The terminal block uses M3 terminal screws. A 35-mm width DIN rail can be installed.
Differences and precautions regarding the drive power supply of the output section of the FX3GE and FX5S • Output section power supply voltage consolidation When replacing the FX3GE with the FX5S, the power supplies must be consolidated if a separate power supply has been installed for one output common terminal of the FX3GE.
REPLACEMENT FROM FX3G TO FX5UJ Outline The FX5UJ is equipped with features such as communication and high-speed input/output, and can easily be expanded with expansion boards and expansion adapters. Up to eight I/O modules and FX5 intelligent function modules (combined) can be connected.
Selection of Substitute Models Recommended substitute models CPU modules (FX3G FX5UJ) The recommended substitute models of the FX5UJ corresponding to the FX3G are shown below. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes...
Page 47
Extension devices (FX3G FX5UJ) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3G to FX5UJ. If there are not any substitute models with the same function as the existing model, check the "Special notes" and consider re- configuring the system.
Page 48
Extension device Current model Recommended substitute Special notes model FX3U-1PSU-5V FX5-1PSU-5V FX2N-4AD-TC FX5-4AD-TC-ADP The wiring must be replaced from the screw terminal block to the European terminal block. FX2N-4AD-PT FX5-4AD-PT-ADP The wiring must be replaced from the screw terminal block to the European terminal block.
Page 49
Expansion adapter Current model Recommended substitute Special notes model FX3U-232ADP FX5-232ADP FX3U-232ADP-MB FX5-232ADP FX3U-485ADP FX5-485ADP FX3U-485ADP-MB FX5-485ADP FX3U-ENET-ADP No recommended substitute models Ethernet port is built into FX5UJ CPU module. FX3U-3A-ADP FX5-4A-ADP FX3U-4AD-ADP FX5-4AD-ADP FX3U-4DA-ADP FX5-4DA-ADP ...
Precautions regarding the hardware Comparison of FX3G and FX5UJ and precautions for replacement The following list shows precautions regarding the hardware. Check details in the manuals of each model when replacing existing models. Key hardware differences and replacement precautions regarding FX3G and FX5UJ Item Difference Precautions...
Page 51
External dimensions When replacing the modules, be aware of external dimensions differences between FX3G and FX5UJ. • FX3G External color: Munsell 0.08GY/7.64/0.81 2-φ4.5-diam mounting hole Top cover: Munsell N1.5 Unit: mm The terminal block uses M3 terminal screws. A 35-mm width DIN rail can be installed. W1 (mounting hole pitch) Model name W: mm...
Page 52
Differences and precautions regarding the drive power supply of the output section of the FX3G and FX5UJ • Output section power supply voltage consolidation When replacing the FX3G with the FX5UJ, the power supplies must be consolidated if a separate power supply has been installed for one output common terminal of the FX3G.
Conversion of the Projects When converting FX3G projects to FX5UJ projects, use GX Works3. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. Operation method for replacing projects To convert FX3G projects to FX5UJ projects, perform operations in GX Works3. Conversion of the projects Write with GX Works3 FX5UJ CPU module...
Operating procedure Start up GX Works3. Open the FX3G project. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. The following selection screen of the new module type is shown. Select the new module type and press the [Execute] button.
Page 55
Check the contents of the module change result in the "Output window". Output window Precautions • If the model/operation mode is converted from FX5U to FX5UJ with GX Works3 versions 1.063R or earlier, device memory entries, device initial values, and device comments that are outside the device range of the FX5UJ will be deleted. •...
Precautions when Converting the Projects • When converting FX3G projects using GX Works3, be aware that the program (instructions and devices) may be changed. • When converting projects, the number of steps may increase and writing to the FX5UJ may fail. Check the number of steps after conversion.
Precautions when replacing other functions Precautions when using the high-speed counters When the high-speed counters (C235 to C255) are used with the FX3G, they will not operate just by switching to the FX5UJ. It is necessary to set the FX3 Series compatible high-speed counters by the parameter and change the program. For the setting procedure, refer to the following.
Page 58
Changing the program Change the high-speed counter program by referring to the following program example. [Example of program] K10000 C235 C235 Y001 Change the program. UDCNTF LC35 K10000 LC35 Y001 Precautions when using the routine timer When the routine timer (T192 to T199) is used with the FX3G, it will not operate just by switching to the FX5UJ. The routine timer must be set by the parameter.
Page 59
Serial communication channel assignment (RS-485, RS-232C) When the FX3G is replaced with the FX5UJ, the assignment of communication channels that can be used changes. Change the communication channels specified in instructions and parameter settings according to the specifications. FX3G communication channel assignment •...
Page 60
FX5UJ communication channel assignment A serial port with up to two channels can be connected using a communication board and a communication adapter. The communication channel assignments are fixed regardless of the system configuration. The configurable combinations are shown below. [Configuration example 1] [Configuration example 2] Using a communication board and a communication adapter...
Replacement of the PLC The main points to consider during replacement of the CPU module and extension modules are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
REPLACEMENT FROM FX3GC TO FX5UC Outline The FX5UC is equipped with features such as communication and high-speed input/output, and can easily be expanded with expansion boards and expansion adapters. Up to eight I/O modules and FX5 intelligent function modules (combined) can be connected.
Selection of Substitute Models Recommended substitute models CPU modules (FX3GC FX5UC) The recommended substitute models of the FX5UC corresponding to the FX3GC are shown below. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes...
Page 65
Current model Recommended substitute Special notes model FX2N-8EYT-H No recommended substitute models FX2N-16EYR FX5-16EYR/ES FX2N-16EYR-ES/UL FX5-16EYR/ES FX2N-16EYT FX5-16EYT/ES FX2N-16EYT-ESS/UL FX5-16EYT/ESS FX2N-16EYT-C FX5-CNV-IF+FX5-C16EYT/D Only a connector type module can be connected after (on the right side of) FX5-CNV-IF.
Expansion adapter Current model Recommended substitute Special notes model FX3U-232ADP FX5-232ADP FX3U-232ADP-MB FX5-232ADP FX3U-485ADP FX5-485ADP FX3U-485ADP-MB FX5-485ADP FX3U-ENET-ADP No recommended substitute models Ethernet port is built into FX5UC CPU module. FX3U-3A-ADP FX5-4A-ADP FX3U-4AD-ADP FX5-4AD-ADP ...
Precautions regarding the hardware Comparison of the FX3GC and FX5UC and precautions for replacement The following list shows precautions regarding the hardware. Check details in the manuals of each model when replacing. Differences and precautions regarding the hardware Item Difference Precautions FX3GC FX5UC...
External dimensions When replacing the modules, be aware of external dimensions differences between FX3GC and FX5UC. • FX3GC External color: Munsell 0.08GY/7.64/0.81 Unit: mm The terminal block uses M3 terminal screws. A 35 mm-width DIN rail can be installed. Model name Weight: kg FX3GC-32MT/D Approx.
Page 69
Cable sizes for European type terminal block Suitable wiring and tightening torque are described below. Model name Wire size for Wire size for Ferrule with insulation Tightening Stripping length of one wire two wires sleeve (wire size) torque wire ends FX3U-485-BD, FX3U-485ADP, 22 to 20 AWG 22 AWG...
Conversion of the Projects When converting FX3GC projects to FX5UC projects, use GX Works3. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. Operation method for replacing projects To convert FX3GC projects to FX5UC projects, perform operations in GX Works3. Conversion of the projects Write with GX Works3 FX5UC CPU module...
Operating procedure Start up GX Works3. Open the FX3GC project. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. The following selection screen of the new module type is shown. Select the new module type and press the [Execute] button.
Page 72
Check the contents of the module change result in the "Output window". Output window Precautions • For GX Works3 versions earlier than 1.025B, the program must be changed from "No Execution Type". (Changing to "Scan" or other settings) • When projects are converted, the program instructions and devices may be changed. Check the contents of the program. Parameters other than the CC-Link network parameters will be deleted.
Precautions when converting the projects • When converting FX3GC projects using GX Works3, be aware that the program (instructions and devices) may be changed. • When converting projects, the number of steps may increase and writing to the FX5UC may fail. Check the number of steps after conversion.
Precautions when replacing other functions Precautions when using the high-speed counters When the high-speed counters (C235 to C255) are used with the FX3GC, they will not operate just by switching to the FX5UC. It is necessary to set the FX3 series compatible high-speed counters and change the program by the parameter. Parameter setting procedure of the FX3 series compatible high-speed counters Select "Long Counter Specification"...
Page 75
Changing the program Change the high-speed counter program by referring to the following program example. Program example K10000 C235 C235 Y001 Change the program. UDCNTF LC35 K10000 LC35 Y001 Precautions when using the routine timer When the routine timer (T192 to T199) is used with the FX3GC, it will not operate just by switching to the FX5UC. The routine timer must be set by the parameter.
Page 76
Serial communication channel assignment (RS-485, RS-232C) When the FX3GC is replaced with the FX5UC, the assignment of communication channels that can be used changes. Change the communication channels specified in instructions and parameter settings according to the specifications. FX3GC communication channel assignment Special communication adapters can be used to connect up to two channels of serial ports.
Replacement of the PLC The main points to consider during replacement of the CPU module and extension devices are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
REPLACEMENT FROM FX3GE TO FX5UJ Outline The FX5UJ is equipped with features such as communication and high-speed input/output, and can easily be expanded with expansion boards and expansion adapters. Up to eight I/O modules and FX5 intelligent function modules (combined) can be connected.
Selection of Substitute Models Recommended substitute models CPU modules (FX3GE FX5UJ) The recommended substitute models of the FX5UJ corresponding to the FX3GE are shown below. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes...
Page 80
Extension devices (FX3GE FX5UJ) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3GE to FX5UJ. If there are not any substitute models with the same function as the existing model, check the "Special notes" and consider re- configuring the system.
Extension device Current model Recommended substitute Special notes model FX3U-1PSU-5V FX5-1PSU-5V FX2N-4AD-TC FX5-4AD-TC-ADP The wiring must be replaced from the screw terminal block to the European terminal block. FX2N-4AD-PT FX5-4AD-PT-ADP The wiring must be replaced from the screw terminal block to the European terminal block.
Precautions regarding the hardwarel Comparison of FX3GE and FX5UJ and precautions for replacement The following list shows precautions regarding the hardware. Check details in the manuals of each model when replacing existing models. Key hardware differences and replacement precautions regarding FX3GE and FX5UJ Item Difference Precautions...
External dimensions When replacing the modules, be aware of external dimensions differences between FX3GE and FX5UJ. • FX3GE External color: Munsell 0.08GY/ 2-I4.5 mounting hole 7.64/0.81 Top cover: Munsell N1.5 Unit: mm The terminal block uses M3 terminal screws. A 35-mm width DIN rail can be installed.
Page 85
Differences and precautions regarding the drive power supply of the output section of the FX3GE and FX5UJ • Output section power supply voltage consolidation When replacing the FX3GE with the FX5UJ, the power supplies must be consolidated if a separate power supply has been installed for one output common terminal of the FX3GE.
Replacement of the PLC The main points to consider during replacement of the CPU module and extension modules are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
REPLACEMENT FROM FX3U TO FX5UJ Outline The FX5UJ is equipped with features such as communication and high-speed input/output, and can easily be expanded with expansion boards and expansion adapters. Up to eight I/O modules and FX5 intelligent function modules (combined) can be connected.
Selection of Substitute Models Recommended substitute models CPU modules (FX3U FX5UJ) The recommended substitute models of FX5UJ compatible with FX3U are introduced. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute model Special notes FX3U-16MR/ES FX5UJ-24MR/ES...
Page 89
Extension devices (FX3U FX5UJ) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3U to FX5UJ. For products without a substitute model of the same function, check the contents described in the Special notes and please consider system reconfiguration.
Page 90
Extension device Current model Recommended substitute Special notes model FX3U-1PSU-5V FX5-1PSU-5V FX2N-4AD-TC FX5-4AD-TC-ADP The wiring must be replaced from the screw terminal block to the European terminal block. FX2N-4AD-PT FX5-4AD-PT-ADP The wiring must be replaced from the screw terminal block to the European terminal block.
Page 91
Current model Recommended substitute Special notes model FX2N-32CCL FX5-CCL-MS Set it as an intelligent device station when using the recommended substitute model. FX2N-64CL-M No recommended substitute models FX3U-16CCL-M FX5-CCL-MS Set it as the master station when using the recommended substitute model.
Page 92
Expansion adapter Current model Recommended substitute Special notes model FX3U-232ADP FX5-232ADP FX3U-232ADP-MB FX3U-485ADP FX5-485ADP FX3U-485ADP-MB FX3U-ENET-ADP No recommended substitute models Ethernet port is built into FX5UJ CPU module. FX3U-3A-ADP FX5-4A-ADP FX3U-4AD-ADP FX5-4AD-ADP FX3U-4DA-ADP FX5-4DA-ADP ...
Precautions regarding the hardware Comparison of FX3U and FX5UJ and precautions for replacement The following list shows precautions of the hardware. Check details in the manuals of each model when replacing existing models. Difference and precautions regarding the main hardware of FX3U and FX5UJ Item Difference Precautions...
External dimensions There are some differences in the external dimensions of the FX3U and the FX5UJ. Be careful when replacing the modules. • FX3U External color: Munsell 0.08GY/7.64/ 2-φ4.5-diam mounting hole (16M, 32M) 0.81 4-φ4.5-diam mounting hole (48M to 128M) Top cover: Munsell N1.5 There is no mounting hole * for 16M and 32M.
Page 95
Differences and precautions regarding installing the FX3U and FX5UJ The pitch of the holes for installation in a control panel and the width differ between the FX3U and FX5UJ. When making a direct installation in a control panel, installation holes must be added. Also, because the terminal block shapes differ, one terminal block cannot be replaced with the other.
Conversion of the Projects When converting FX3U projects to FX5UJ projects, use GX Works3. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. Operation method for replacing projects To convert FX3U projects to FX5UJ projects, perform operations in GX Works3. Conversion of the projects Write with GX Works3 FX5UJ CPU module...
Operating procedure Start up GX Works3. Open the FX3U project. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. A selection screen of the following new module type is shown. Select the new module type and press the [Execute] button.
Page 98
Check the contents of the model change result in the "Output window". Output window Precautions • For GX Works3 versions 1.063R or earlier, when changing the model/operation mode from the FX5U to the FX5UJ, device memory entries, device initial values, and device comments that are outside the device range of the FX5UJ will be deleted. •...
Precautions when converting the projects • When converting FX3U projects using GX Works3, be careful because the program (instructions and devices) may be changed. • When converting projects, the number of steps may increase and writing to the FX5UJ may be impossible. Check the number of steps after replacement.
Set the function of the high-speed counters used with the FX3U. Select the input comparison enable/disable of the counter device and preset input compatible with the FX3 Series, and select the control switch. Changing the Program Change the high-speed counter program by referring to the following program example. [Example of program] K10000 C235...
Page 101
Precautions when using the routine timer When the routine timer (T192 to T199) is used with the FX3U, it will not operate just by switching to the FX5UJ. The routine timer must be set by the parameter. For the setting procedure, refer to the following. Parameter setting procedure of the routine timer Set the use of the routine timer and the leading device number.
Page 102
Serial communication channel assignment (RS-485, RS-232C) When the FX3U is replaced with the FX5UJ, the communication channel assignments that can be used change. Change the communication channels specified with instructions and parameter settings so that these channels match the specifications. FX3U communication channel assignment A communication function expansion board and a special communication adapter can be used to connect up to two channels of serial ports.
Replacement of the PLC The main points to consider during replacement of the CPU module and extension modules are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
REPLACEMENT FROM FX3U TO FX5U Outline The FX5U is equipped with features such as analog functions, communication, and high-speed input/output, and can easily be expanded with expansion boards and expansion adapters. The high-speed system bus communication brings out the maximum performance of extension modules equipped with intelligent functions. The procedures and points for replacing an existing model with the FX5U are shown below.
Selection of Substitute Models Recommended substitute models CPU modules (FX3U FX5U) The recommended substitute models of FX5U compatible with FX3U are introduced. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes model FX3U-16MR/ES...
Page 107
Extension devices (FX3U FX5U) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3U to FX5U. For products without a substitute model of the same function, check the contents described in the Special notes and please consider system reconfiguration.
Page 108
Extension device Current model Recommended substitute Special notes model FX3U-1PSU-5V FX5-1PSU-5V FX2N-4AD-TC FX5-4AD-TC-ADP The wiring must be replaced from the screw terminal block to the European terminal block. FX2N-4AD-PT FX5-4AD-PT-ADP The wiring must be replaced from the screw terminal block to the European terminal block.
Page 109
Current model Recommended substitute Special notes model FX2N-32CCL FX5-CCL-MS Set it as an intelligent device station when using the recommended substitute model. FX2N-64CL-M No recommended substitute models FX3U-16CCL-M FX5-CCL-MS Set it as the master station when using the recommended substitute model.
Expansion adapter Current model Recommended substitute Special notes model FX3U-232ADP FX5-232ADP FX3U-232ADP-MB FX3U-485ADP FX5-485ADP FX3U-485ADP-MB FX3U-ENET-ADP No recommended substitute models Ethernet port is built into FX5U CPU module. FX3U-3A-ADP FX5-4A-ADP FX3U-4AD-ADP FX5-4AD-ADP FX3U-4DA-ADP FX5-4DA-ADP ...
Precautions regarding the hardware Comparison of FX3U and FX5U and precautions for replacement The following list shows precautions of the hardware. Check details in the manuals of each model when replacing. Difference and precautions regarding the main hardware of FX3U and FX5U Item Difference Precautions...
External dimensions There are some differences in the external dimensions of the FX3U and the FX5U. Be careful when replacing the modules. • FX3U External color: Munsell 0.08GY/7.64/ 2-φ4.5-diam mounting hole (16M, 32M) 0.81 4-φ4.5-diam mounting hole (48M to 128M) Top cover: Munsell N1.5 There is no mounting hole * for 16M and 32M.
Page 113
Cable sizes for European type terminal block Suitable wiring and tightening torque are described below. Model name Wire size for Wire size for Ferrule with insulation Tightening Stripping dimensions one wire two wires sleeve (wire size) torque of electric wire ends Built-in RS-485 communication 24 to 20 AWG 24 AWG...
Conversion of the Projects When converting FX3U projects to FX5U projects, use GX Works3. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. For the replacement of the SFC program, refer to Page 163 Conversion of the SFC Program. Operation method for replacing projects To convert FX3U projects to FX5U projects, perform operations in GX Works3.
Operating procedure Start up GX Works3. Open the FX3U project. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. A selection screen of the following new module type and conversion method is shown. Select the new module type and conversion method, and press the [Execute] button.
Page 116
Check the contents of the model change result in the "Output window". Output window Precautions • For GX Works3 versions earlier than 1.025B, the program must be changed from "No Execution Type". (Changing to "Scan" or other settings) • When projects are converted, the program instructions and devices may be changed. Check the contents of the project. Parameters other than the network parameter of CC-Link will be deleted.
Precautions when converting the projects • When converting FX3U projects using GX Works3, be careful because the program (instructions and devices) may be changed. • When converting projects, the number of steps may increase and writing to the FX5U may be impossible. Check the number of steps after replacement.
Precautions when replacing other functions Precautions when using the high-speed counters When the high-speed counters (C235 to C255) are used with the FX3U, they will not operate just by switching to the FX5U. It is necessary to set the FX3 series compatible high-speed counters and change the program by the parameter. For the setting procedure, refer to the following.
Page 119
Changing the program Change the high-speed counter program by referring to the following program example. [Example of program] K10000 C235 C235 Y001 Change the program. UDCNTF LC35 K10000 LC35 Y001 Precautions when using the routine timer When the routine timer (T192 to T199) is used with the FX3U, it will not operate just by switching to the FX5U. The routine timer must be set by the parameter.
Page 120
Serial communication channel assignment (RS-485, RS-232C) When the FX3U is replaced with the FX5U, the communication channel assignments that can be used change. Change the communication channels specified with instructions and parameter settings so that these channels match the specifications. FX3U communication channel assignment A communication function expansion board and a special communication adapter can be used to connect up to two channels of serial ports.
Replacement of the PLC The main points to consider during replacement of the CPU module and extension modules are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
REPLACEMENT FROM FX3UC TO FX5UC Outline The FX5UC has compact and easy-to-use compatible extension modules, which makes downsizing of various devices possible. Connect to the FX5 and FX3 extension modules with the variety of conversion modules available. The procedures and points for replacing an existing model with the FX5UC are shown below. Use this information to consider replacing existing models.
Page 124
Selection of Substitute Models Recommended substitute models CPU modules (FX3GC FX5UC) The recommended substitute models of FX5UC compatible with FX3UC are introduced below. Please consider replacing the currently used CPU modules with the following recommended substitute models. Current model Recommended substitute Special notes model...
Page 125
Extension devices (FX3UC FX5UC) The following list shows the extension devices that also need to be replaced when replacing the CPU module from FX3UC to FX5UC. For products without a substitute model of the same function, check the contents described in the Special notes and please consider system reconfiguration.
Page 126
Extension device Current model Recommended substitute Special notes model FX2N-1HC FX5-16ET/ES-H Select this model when the open collector 24VDC input and sink output are used. When 12VDC input or 5VDC input is used, there is no substitute model. FX5-16ET/ESS-H Select this model when the open collector 24VDC input and source output are used.
Page 127
Current model Recommended substitute Special notes model FX2N-32CCL FX5-CCL-MS Set it as an intelligent device station when using the recommended substitute model. FX2N-64CL-M No recommended substitute models FX3U-16CCL-M FX5-CCL-MS Set it as the master station when using the recommended substitute model.
Page 128
Option Current model Recommended substitute Special notes model FX2NC-CNV-IF FX5-CNV-IFC FX3UC-1PS-5V FX5-C1PS-5V FX3U-FLROM-16 No recommended substitute models Substituted by an SD memory card. FX3U-FLROM-64 No recommended substitute models Substituted by an SD memory card. FX3U-FLROM-64L No recommended substitute models Substituted by an SD memory card.
Page 129
Precautions regarding the hardware Comparison of FX3UC and FX5UC and precautions for replacement The following list shows precautions of the hardware. Check details in the manuals of each models when replacing. Difference and precautions regarding the main hardware of FX3UC and FX5UC Item Difference Precautions...
Page 130
External dimensions There is some difference in the external dimension of FX3UC and the successor model FX5UC. Be careful when replacing the modules. • FX3UC External color: Munsell 0.08GY/7.64/0.81 Unit: mm 35 mm width DIN rail can be installed [Accessories] FX2NC-100MPCB power cable FX2NC-100BPCB power cable (only FX3UC-MT/D) Model name...
Page 131
• FX5UC External color: Munsell 0.6B7.6/0.2 Unit: mm 35 mm width DIN rail can be installed [Accessories] FX2NC-100MPCB power cable FX2NC-100BPCB power cable (only FX5UC-MT/D) 89.1 Model name W: mm Weight: kg FX5UC-32MT/D, DSS 42.1 Approx. 0.20 FX5UC-64MT/D, DSS 62.2 Approx.
Conversion of the Projects When converting FX3UC projects to FX5UC projects, use GX Works3. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. For the replacement of the SFC program, refer to Page 163 Conversion of the SFC Program. Operation method for replacing projects To convert FX3UC projects to FX5UC projects, perform operations in GX Works3.
Operating procedure Start up GX Works3. Open the FX3UC project. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. A selection screen of the following new module type and conversion method is shown. Select the new module type and conversion method, and press the [Execute] button.
Page 134
Check the contents of the model change result in the "Output window". Output window Precautions • For GX Works3 versions earlier than 1.025B, the program must be changed from "No Execution Type". (Changing to "Scan" or other settings) • When projects are converted, the program instructions and devices may be changed. Check the contents of the project. Parameters other than the network parameter of CC-Link will be deleted.
Precautions when converting the projects • When converting FX3UC projects using GX Works3, be careful because the program (instructions and devices) may be changed. • When converting projects, the number of steps may increase and writing to the FX5UC may be impossible. Check the number of steps after replacement.
Page 136
Precautions when replacing other functions Precautions when using the high-speed counters When the high-speed counters (C235 to C255) are used with the FX3UC, they will not operate just by switching to the FX5UC. It is necessary to set the FX3 Series compatible high-speed counters and change the program by the parameter. For the setting procedure, refer to the following.
Page 137
Changing the program Change the high-speed counter program by referring to the following program example. [Example of program] K10000 C235 C235 Y001 Change the program. UDCNTF LC35 K10000 LC35 Y001 Precautions when using the routine timer When the routine timer (T192 to T199) is used with the FX3UC, it will not operate just by switching to the FX5UC. The routine timer must be set by the parameter.
Page 138
Serial communication channel assignment (RS-485, RS-232C) When the FX3UC is replaced with the FX5UC, the communication channel assignments that can be used change. Change the communication channels specified with instructions and parameter settings so that these channels match the specifications. FX3UC communication channel assignment Special communication adapters can be used to connect up to two channels of serial ports.
Page 139
Replacement of the PLC The main points to consider during replacement of the CPU module and extension devices are explained below. For details of each item, check the reference pages in this document, and related manuals such as the PLC Hardware Manual and Programming Manual.
Specifications Comparison The following table lists the specifications comparison between the FX3UC and FX5UC. Item FX3UC FX5UC Operation control system Stored program repetitive operation system Stored program repetitive operation system Input/output control system Refresh system Refresh system Programming language Ladder diagram (LD) Ladder diagram (LD) Structured text (ST) Structured text (ST)
APPENDICES When converting MELSEC FX3 series projects using GX Works3, be aware that the program (instructions and devices) may be changed. When converting projects, the number of steps may increase and writing to the FX5 CPU module may be impossible. Check the number of steps after replacement.
Page 143
FX3 series MELSEC iQ-F Remarks OUT SM4095 These instructions are not supported by MELSEC iQ-F. Therefore, it will be replaced with OUT SM4095. COMRD OUT SM4095 COMRDP OUT SM4095 REFF OUT SM4095 Correct the program to use REF instruction. ...
Page 144
FX3 series MELSEC iQ-F Remarks FLCRT OUT SM4095 These instructions are not supported by MELSEC iQ-F. Therefore, it will be replaced with OUT SM4095. FLDEL OUT SM4095 FLWR OUT SM4095 FLRD OUT SM4095 FLCMD OUT SM4095 ...
Page 145
Instruction replacement list for converting structured ladder to FBD/LD Replaced instructions The following instructions will be replaced with GX Works3 compatible instructions when converting the project. FX3 Series MELSEC iQ-F Remarks OUT_C_32 OUT_C OUT_T OUT_T, OUTH, OUTHS When a label is used instead of a timer device, the •...
Page 147
FX3 Series MELSEC iQ-F Remarks OR<> OR_NE ORD<> ORD_NE OR<= OR_LE ORD<= ORD_LE OR>= OR_GE ORD>= ORD_GE IVCK IVCK SM4095 is added to parameters of instructions. Change to an appropriate device or label.
Page 148
Instructions that are not supported by GX Works3 The following instructions are not supported by GX Works3. The instructions are left as is when converting the projects, but an error will occur when compiling. FX3 Series MELSEC iQ-F Remarks ...
Page 149
Even if the instructions are supported by GX Works3, a conversion error may occur due to factors such as the difference of the setting range between GX Works3 and the MELSEC FX3 series. Instructions/FB/FUN that are not supported by the FBD/LD program will be undefined instructions/FB/FUN.
Page 150
Instruction replacement list of ST programs Replaced instructions The following instructions will be replaced with GX Works3 compatible instructions when converting the project. FX3 Series MELSEC iQ-F Remarks OUT_T OUT_T, OUTH, OUTHS When a label is used instead of a timer device, the •...
Page 152
Instructions that are not supported by GX Works3 The following instructions are not supported by GX Works3. The instructions are left as is when converting the projects, but an error will occur when compiling. FX3 Series MELSEC iQ-F Remarks ...
Page 153
Even if the instructions are supported by GX Works3, a conversion error may occur due to the difference of the setting range of the MELSEC FX3 series. When a character string constant is used in the GX Works2 program, be aware of the following points.
Appendix 2 Precautions for Instruction Replacement When converting the projects of the FX3 Series to MELSEC iQ-F projects, the instructions may be changed or correction required. The details are explained below. Arguments Arguments of function with "_E" For functions with "_E", the positions of the arguments are different between GX Works2 and GX Works3. Therefore the projects must be modified after conversion.
Page 155
Correction of structured ladder/FBD program • The method of thinking for execution order is different for the GX Works2 structured ladder/FBD and GX Works3 FBD/LD language. Display the execution order and check the contents. • The operation of the return element is different for the GX Works2 structured ladder/FBD and GX Works3 FBD/LD language.
Appendix 3 Device Replacement List The device list when converting the MELSEC FX3 series projects to the MELSEC iQ-F projects are shown below. Actions such as replacing the device will be necessary according to the content of precautions. Device replacement list of FX3U, FX3UC FX5U, FX5UC, FX5UJ The device list when converting FX3U and FX3UC projects to MELSEC iQ-F (FX5U, FX5UC, and FX5UJ) projects is shown below.
Page 157
Device name FX3U, FX3UC After conversion to Precautions the FX5U, FX5UC, or In the case of FX5U and In the case of FX5UJ FX5UJ FX5UC Timer 100 ms OUT T OUT T T0 to T191 T0 to T191 100 ms OUT T OUT T...
Page 158
Device name FX3U, FX3UC After conversion to Precautions the FX5U, FX5UC, or In the case of FX5U and In the case of FX5UJ FX5UJ FX5UC High-speed 1-phase 1-count C235 to C245 C235 to C245 Setting of the FX3 series Setting of the FX3 series counter input compatibility assignment and...
Page 159
Device name FX3U, FX3UC After conversion to Precautions the FX5U, FX5UC, or In the case of FX5U and In the case of FX5UJ FX5UJ FX5UC Interrupt Input interrupt I00 I0 to I5 Replaced as follows. Replaced as follows. pointer (delay interrupt) I10...
Page 160
Device replacement list of FX3G, FX3GE FX5S, FX5UJ The device list when FX3G/FX3GE projects are converted to FX5S/FX5UJ projects is shown below. Actions such as replacing the device will be necessary according to the content of precautions. Device name FX3G/FX3GE After conversion to the Precautions...
Page 161
Device name FX3G/FX3GE After conversion to the Precautions FX5S/FX5UJ Counter 16-bit up counter for C0 to C15 C0 to C15 general use 16-bit up counter for C16 to C199 C16 to C199 keep 32-bit bidirectional C200 to C219 LC0 to LC19 counter for general ...
Page 162
Device name FX3G/FX3GE After conversion to the Precautions FX5S/FX5UJ Interrupt pointer Input interrupt I00 I0 to I5 Replaced as follows. (delay interrupt) I10 I00I0 I10 I1 I20 I20 I2 I30 I30 I3 I40 I40 I4 I50 I50...
Appendix 4 Precautions for Device Replacement Precautions for device replacement When the firmware version of FX5U/FX5UC CPU module is earlier than 1.220 and the version of GX Works3 is earlier than 1.070Y or when FX5UJ CPU module is used, the S devices cannot be index-modified. Replace as follows. For other precautions, refer to the MELSEC iQ-F FX5 Programming Manual (Program Design).
Page 164
SM/SD device replacement For the MELSEC FX3 series, devices for M8000 and later will be changed to those for SM8000 and later, and devices for D8000 and later will be changed to those for SD8000 and later. However, some devices may be changed depending on the version of GX Works3.
Appendix 5 Conversion of the SFC Program Below are described the procedure and precautions for converting FX3U/FX3UC projects created with the SFC program into FX5U/FX5UC projects. After converting the projects, it may be necessary to adjust the programs (instructions, devices) and parameters. This chapter describes the SFC program operations and specifications.
Operation method for replacing projects To convert FX3U/FX3UC projects to FX5U/FX5UC projects, perform operations in GX Works3. Conversion of the Projects FX5U CPU module FX5UC CPU module Write with GX Works3 GX Works2 format GX Works3 format project data project data (FX3U/FX3UC) (FX5U/FX5UC) Conversion...
Page 167
Operating procedure Start up GX Works3. Open the project of FX3U/FX3UC. Select [Project] [Open Other Format File] [GX Works2 Format] [Open Project] Project (***.gxw). The following display is shown. A selection screen of the following new module type and conversion method is shown. Select the new module type and conversion method, and press the [Execute] button.
Page 168
Check the contents of the model change result in the "Output window". Output window Precautions When projects are converted, the program instructions and devices may be changed. Check the contents of the project. Parameters other than the network parameter of CC-Link will be deleted.
Precautions when converting the projects The number of simultaneously activated steps varies between FX3U/FX3UC and FX5U/FX5UC. Item FX3U/FX3UC FX5U/FX5UC Number of simultaneously activated steps • Up to 512 steps in 1 block • Up to 128 steps in 1 block •...
Precautions when replacing the program • When MELSEC iQ-F uses the SFC program, a step relay (S) cannot be specified in any instruction other than the SFC control instructions. The SFC control instructions cannot be used in an interrupt program. After replacement, reexamine the program.
Page 171
• After replacement with GX Works3, a jump to the initial steps (S0 to S9) of other blocks will be replaced with a block start step (without end check) [BS] + unconditional transition + an end step. The block start step will be added as the maximum step No.
3, 4, 5, 6, 7, APPENDIX 1, 3 This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
WARRANTY Please confirm the following product warranty details before using this product. 1. Gratis Warranty Term and Gratis Warranty 2. Onerous repair term after discontinuation of production Range If any faults or defects (hereinafter "Failure") found to be Mitsubishi shall accept onerous product repairs for the responsibility of Mitsubishi occurs during use of the seven (7) years after production of the product is product within the gratis warranty term, the product shall...
TRADEMARKS 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. SH(NA)-082703ENG-B...
Page 178
Manual number: SH(NA)-082703ENG-B HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN NAGOYA WORKS: 1-14, YADA-MINAMI 5-CHOME, HIGASHI-KU, NAGOYA 461-8670, JAPAN When exported from Japan, this manual does not require application to the Ministry of Economy, Trade and Industry for service transaction permission. Specifications subject to change without notice.
Need help?
Do you have a question about the MELSEC FX3 Series and is the answer not in the manual?
Questions and answers