FX5U-32MR/ES PLC
The Mitsubishi FX5U-32MR/ES PLC is a high-performance compact PLC designed to enhance industrial automation with its high-speed processing, built-in Ethernet, and advanced motion control capabilities.
As part of the MELSEC iQ-F Series, this industrial controller supports smart factory automation with features such as CC-Link IE TSN for seamless networking, GX Works3 software for efficient programming, and built-in analog I/O for precise machine control. Ideal for manufacturing, food & beverage, water treatment, and material handling, the FX5U-32MR/ES PLC ensures reliable SCADA integration, real-time monitoring, and secure industrial networking.
With battery-less data retention, an SD memory card slot for data logging, and IP security features, this Ethernet PLC is built for future-proof automation.
Whether optimizing conveyor systems, packaging lines, pump control, or motion synchronization, the FX5U-32MR/ES PLC delivers unmatched performance, connectivity, and scalability for modern industrial applications.

The FX5U-32MR/ES PLC offers exceptional flexibility and scalability for complex automation systems, thanks to its 32 I/O points, high-speed bus architecture, and support for up to 512 remote I/O points via CC-Link and AnyWireASLINK.
The FX5U-32MR/ES PLC not only supports multiple programming languages such as SFC, ST, and FBD/LD, but also features a high-speed instruction cycle (34 ns per LD instruction), enabling rapid and accurate control of processes.
The FX5U-32MR/ES PLC motion control capabilities, with CC-Link IE TSN-compatible modules, enable precise positioning and synchronous control for even the most demanding automation tasks.
Additionally, the SD memory card slot makes it easy to update programs, back up data, and monitor equipment status through real-time data logging, providing invaluable insights into production conditions. With its built-in Ethernet and RS485 communication ports, the FX5U-32MR/ES PLC provides seamless integration into existing systems, ensuring optimal performance across industries.
Basic information on the FX5U-32MR/ES PLC
Overview | AC power supply DC input Screw terminal block type Input: 16 points 24 V DC sink/source Output: 16 points Relay Built-in analog input: 2 ch Built-in analog output: 1 ch Built-in high-speed counter: Up to 6 ch 200 kHz + 2 ch 10 kHz Built-in Ethernet port: 1 ch Built-in RS-485 port: 1 ch |
Conformance standard | UL cUL CE(EMC) CE(LVD) CE(RoHS) KC(EMC) LR NK DNV ABS RINA BV KR |
Sales status | On sale |
CPU performance
The MELSEC iQ-F Series has a CPU capable of high-speed processing with an instruction operation speed (LD instruction) of 34 ns. In addition, the CPU supports the execution of structured programs and multiple programs, SFC language, ST language, FBD/LD language, etc.
Controllable I/O
Up to 512 points can be controlled using remote I/O (CC-Link and AnyWireASLINK).
Sufficient built-in communication ports
Ethernet and RS485 communication ports are provided as a standard. A seamless connection with various peripheral and upper-level devices can be realized without additional units.
SD memory card slot
Programs can be updated, and programs can be read from an SD card. The SD memory card can also be used to log data, which is useful for analysing equipment status and production conditions.
Substantial built-in functions
A max. 200 kpps built-in positioning function and high-speed counter function are also equipped. Various convenient functions, including remote monitoring with the Web server function, are provided.
Motion control supported
High-accuracy positioning control is possible with the CC-Link IE TSN-compatible motion module and SSCNET III/H-compatible simple motion module. Complicated positioning control such as synchronous control is possible even with a micro PLC using reduced wiring.
Built-in analog I/O (with alarm output)
Analog I/O ports are provided as standard on the screw terminal block-type CPU module. Inputs from sensors and outputs to drive devices can be controlled without module expansion.
Powerful security functions
Various security functions, including IP address filters and authorization keys, are provided. Your valuable data and devices are protected.
Battery-less and maintenance-free
The program memory uses non-volatile memory, so data can be held without a battery. An optional battery can be added to expand the data-holding range.
Performance specifications of the FX5U-32MR/ES PLC
Control system | ||
Input/output control system | ||
No. of input/output points | (1) No. of input/output points | |
(2) No. of remote I/O points | ||
Total No. of points of (1) and (2) | ||
Programming specifications | Programming language | |
Programming extension function | ||
Constant scan | ||
Fixed cycle interrupt | ||
Timer performance specifications | ||
No. of program executions | ||
No. of FB files | ||
Operation specifications | Execution type | |
Interrupt type | ||
Command processing time | LD X0 | |
MOV D0 D1 | ||
Memory capacity | Program capacity | |
SD memory card | ||
Device/label memory | ||
Data memory/standard ROM | ||
Flash memory (Flash ROM) write count | ||
File storage capacity | Device/label memory | |
Data memory | P: No. of program files | |
FB: No. of FB files | ||
SD memory card | 2 Gbytes | |
4 Gbytes, 8 Gbytes, 16 Gbytes | ||
Clock function | Display data | |
Precision | ||
Power failure retention (clock data) | Retention method | |
Retention time | ||
Power failure retention (device) | Power failure retention capacity | |
Number of device points | ||
No. of user device points | Input relay (X) | Octal |
Output relay (Y) | Octal | |
Internal relay (M) | Decimal | |
Latch relay (L) | Decimal | |
Link relay (B) | Hexadecimal | |
Annunciator (F) | Decimal | |
Link special relay (SB) | Hexadecimal | |
Step relay (S) | Decimal | |
Timer system (Timer (T)) | Decimal | |
Accumulation timer system (Accumulation timer (ST)) | Decimal | |
Counter system (Counter (C)) | Decimal | |
Counter system (Long counter (LC)) | Decimal | |
Data register (D) | Decimal | |
Link register (W) | Hexadecimal | |
Link special register (SW) | Hexadecimal | |
No. of system device points | Special relay (SM) | Decimal |
Special register (SD) | Decimal | |
Module access device | Intelligent function module device | Decimal |
No. of index register points | Index register (Z) | Decimal |
Long index register (LZ) | Decimal | |
No. of file register points | File register (R) | Decimal |
Extended file register (ER) | Decimal | |
No. of nesting points | Nesting (N) | Decimal |
No. of pointer points | Pointer (P) | Decimal |
Interrupt pointer (I) | Decimal | |
Others | Decimal constant (K) | Signed |
Unsigned | ||
Hexadecimal constant (H) | ||
Real constant (E) | Single precision | |
Character string | ||
Power supply specifications | ||
Rated voltage | ||
Voltage fluctuation range | ||
Frequency rating | ||
Allowable instantaneous power failure time | ||
Power fuse | ||
Rush current | ||
Power consumption | ||
24 V DC service power supply capacity | ||
5 V DC built-in power supply capacity | ||
Input specifications | ||
No. of input points | ||
Input connection type | ||
Input type | ||
Input signal voltage | ||
Input signal current | X0 to X17 | |
Input impedance | X0 to X17 | |
ON input sensitivity current | X0 to X17 | |
OFF input sensitivity current | ||
Input response frequency | X0 to X5 | |
X6 to X17 | ||
Pulse waveform | ||
X0 to X5 | ||
X6 to X17 | ||
Input response time (H/W filter delay) | X0 to X5 | |
X6 to X17 | ||
Input response time (Digital filter setting value) | ||
Input signal format (Input sensor form) | ||
Input circuit insulation | ||
Indication of input operation | ||
Input circuit configuration | ||
Output specifications | ||
No. of output points | ||
Output connection type | ||
Output type | ||
External power supply | ||
Max. load | ||
Min. load | ||
Open circuit leakage current | ||
Response time | OFF→ON | |
ON→OFF | ||
Output circuit insulation | ||
Indication of output operation | ||
Output circuit configuration |
Function specifications of the FX5U-32MR/ES PLC
Firmware update function | |
Scan monitoring function (Watchdog timer setting) | |
Clock function | |
Online change | Online ladder block change |
Interrupt function | Multiple interrupt function |
PID control function | |
Constant scan | |
Remote operation | Remote RUN/STOP |
Remote PAUSE | |
Remote RESET | |
Device/label memory area setting | |
Program capacity setting | |
Internal buffer capacity setting | |
Initial device value setting | |
Latch function | |
Memory card function | SD memory card forced stop |
Boot operation | |
Device/label access service processing setting | |
Data logging function | |
Memory dump function | |
Real-time monitor function | |
RAS function | Self-diagnostics function |
Error clear | |
Event history function | |
Data backup/restoration function | |
Security function | |
IP filter function | |
High-speed input/output function | High-speed counter function |
Pulse width measurement function | |
Input interrupt function | |
Positioning function | |
PWM output function | |
Built-in analog function | Analog input function |
Analog output function | |
Built-in Ethernet function | |
CC-Link IE Field Network Basic function | |
Serial communication function | |
MODBUS communication function |
This function updates the module’s firmware using an SD memory card. |
Detects an error in the hardware and program of the CPU module by monitoring the scan time. |
This function is used for the time management in the function which the system operates such as the date of the event history function, and data logging function. |
Writes the part of a program edited on the ladder editor using the engineering tool to the CPU module in units of ladder blocks. Edited contents spanning multiple portions can be written to the CPU module at once. |
When an interrupt occurs while an interrupt program triggered by another cause is running, stops the program if its priority is lower than that of the new interrupt, and runs the higher-priority program whenever its execution condition is satisfied. |
Performs PID control by the PID control instruction. |
Monitors the data in the specified device of the CPU module at a specified interval or at a desired timing in real-time. |
Changes the CPU module status to the RUN/STOP/PAUSE status externally while the RUN/STOP/RESET switch of the CPU module is in RUN status. |
Changes the CPU module status to the RUN/STOP/PAUSE status externally while the RUN/STOP/RESET switch of the CPU module is in RUN status. |
Resets the CPU module externally while the CPU module is in the STOP status. |
Sets the capacity of each area in the device/label memory. |
Set to change program capacity. |
Sets the capacity of the area (internal buffer) used by the system to temporarily store the results of data logging and memory dump processing. |
Sets the initial values of devices used in the program directly (not via the program) to the devices. |
Holds the contents of the device and label of the CPU module when the power is turned ON etc. |
Makes the SD memory card unavailable without turning OFF the power even when the function accessing the SD memory card is executed. |
Transfers the file stored in the SD memory card to the transfer destination memory judged automatically by the CPU module when the power is turned ON or is reset. |
Sets the number of execution times of the device/label access service processing executed by END processing, with parameter. |
Collects data at the specified interval or any desired timing, and stores them as a file on the SD memory card. |
Saves the data in the devices of the CPU module at a desired timing. |
Two analog inputs are built into the FX5U CPU module so that voltage input can be performed. |
Self-diagnoses the CPU module to see whether an error exist or not. |
Batch-clears all the continuation errors being detected. |
Collects operations executed and errors detected from the modules, and saves them in the CPU module, expansion board, expansion adapter, and intelligent module. The saved logs can be checked in chronological order. |
Backs up program files, parameter files, and device/label data files in a CPU module to an SD memory card. The backup data can be restored as needed. |
Protects resources stored in PCs and resources in the units in the system of the FX5 from illegal access by a third party such as theft, alteration, accidental operation and unauthorized execution. |
Identifies the IP address of external devices over Ethernet, and blocks access from an invalid IP address. |
Performs high-speed counter, pulse width measurement, input interruption, etc. by using the input of the CPU module or high-speed pulse input/output module. |
Performs high-speed counter, pulse width measurement, input interruption, etc. by using the input of the CPU module or high-speed pulse input/output module. |
Performs high-speed counter, pulse width measurement, input interruption, etc. by using the input of the CPU module or high-speed pulse input/output module. |
Executes positioning operation by using the transistor output of the high-speed pulse input/output module. |
Executes a PWM output by using the transistor output of the high-speed pulse input/output module. |
One analog output is built in the FX5U CPU module so that voltage output can be performed. |
An Ethernet-related function such as connection to MELSOFT products and GOTs, socket communication, file transfer using FTP, Web server (HTTP), SNTP client, and simple CPU communication function. |
An Ethernet related function such as connection to MELSOFT products and GOTs, socket communication, file transfer using FTP, Web server (HTTP), SNTP client, and simple CPU communication function. |
This function exchanges data between the master station and remote station using general-purpose Ethernet. |
A function related to the serial communication such as N:N Network, parallel link, MC protocol, inverter communication function and non-protocol communication. |
Connection with the products which support MODBUS RTU/TCP is available. The master and slave functions can be used. |
General specifications of FX5U-32MR/ES PLC
Operating ambient temperature | ||
Storage ambient temperature | ||
Operating ambient humidity | ||
Storage ambient humidity | ||
Vibration resistance | Installed on DIN rail | Frequency: 5 to 8.4 Hz |
Frequency: 8.4 to 150 Hz | ||
Direct installing | Frequency: 5 to 8.4 Hz | |
Frequency: 8.4 to 150 Hz | ||
Shock resistance | ||
Noise durability | ||
Dielectric withstand voltage | Between power supply terminal (AC power supply) and ground terminal | |
Between 24 V DC service power supply connected to input terminal (24 V DC) and ground terminal | ||
Between output terminal (relay) and ground terminal | ||
Insulation resistance | Between power supply terminal (AC power supply) and ground terminal | |
Between 24 V DC service power supply connected to input terminal (24 V DC) and ground terminal | ||
Between output terminal (relay) and ground terminal | ||
Grounding | ||
Working atmosphere | ||
Operating altitude | ||
Installation location | ||
Overvoltage category | ||
Pollution degree |
Acceleration: 9.8 m/s2 10 times each in X, Y, Z directions (80 min in each direction) The criterion is shown in IEC61131-2. When the system has equipment whose specification values are lower than the above-mentioned vibration resistance specification values, the vibration resistance specification of the whole system corresponds to the lower specification. |
-25 to 75℃, non-freezing |
5 to 95%RH, non-condensation When used in a low-temperature environment, use in an environment with no sudden temperature changes. If there are sudden temperature changes because of opening/closing of the control panel or other reasons, condensation may occur, which may cause a fire, fault, or malfunction. Furthermore, use an air conditioner in dehumidifier mode to prevent condensation. |
5 to 95%RH, non-condensation |
Acceleration: 9.8 m/s2 10 times each in X, Y, Z directions (80 min in each direction) The criterion is shown in IEC61131-2. When the system has equipment whose specification values are lower than above-mentioned vibration resistance specification values, the vibration resistance specification of the whole system corresponds to the lower specification. |
Acceleration: 4.9 m/s2 10 times each in X, Y, Z directions (80 min in each direction) The criterion is shown in IEC61131-2. When the system has equipment whose specification values are lower than the above-mentioned vibration resistance specification values, the vibration resistance specification of the whole system corresponds to the lower specification. |
Half amplitude: 3.5 mm 10 times each in X, Y, Z directions (80 min in each direction) The criterion is shown in IEC61131-2. When the system has equipment whose specification values are lower than the above-mentioned vibration resistance specification values, the vibration resistance specification of the whole system corresponds to the lower specification. |
II or less This indicates the section of the power supply to which the equipment is assumed to be connected between the public electrical power distribution network and the machinery within the premises. Category II applies to equipment for which electrical power is supplied from fixed facilities. The surge voltage withstand level for up to the rated voltage of 300 V is 2500 V. |
147 m/s2, Action time: 11 ms, 3 times by half-sine pulse in each direction X, Y, and Z The criterion is shown in IEC61131-2. |
By noise simulator at noise voltage of 1000 Vp-p, noise width of 1 μs and period of 30 to 100 Hz |
1.5 kV AC for one minute |
500 V AC for one minute |
1.5 kV AC for one minute |
10 MΩ or higher by 500 V DC insulation resistance tester |
10 MΩ or higher by 500 V DC insulation resistance tester |
10 MΩ or higher by 500 V DC insulation resistance tester |
Class D grounding (grounding resistance: 100 Ω or less) (Common grounding with a heavy electrical system is not allowed) For grounding, refer to MELSEC iQ-F FX5S/FX5UJ/FX5U/FX5UC User’s Manual (Hardware). |
Free from corrosive or flammable gas and excessive conductive dust |
0 to 2000 m The PLC cannot be used at a pressure higher than the atmospheric pressure to avoid damage. |
Inside a control panel The programmable controller is assumed to be installed in an environment equivalent to indoor. |
II or less This indicates the section of the power supply to which the equipment is assumed to be connected between the public electrical power distribution network and the machinery within premises. Category II applies to equipment for which electrical power is supplied from fixed facilities. The surge voltage withstand level for up to the rated voltage of 300 V is 2500 V. |
2 or less This index indicates the degree to which conductive material is generated in the environment in which the equipment is used. Pollution level 2 is when only non-conductive pollution occurs. Temporary conductivity caused by condensation must be expected occasionally. |
Product name | Model name | Overview |
---|---|---|
SD memory card | NZ1MEM-2GBSD | SD memory card, program memory capacity: 2G bytes |
NZ1MEM-4GBSD | SDHC memory card, program memory capacity: 4G bytes | |
NZ1MEM-8GBSD | SDHC memory card, program memory capacity: 8G bytes | |
NZ1MEM-16GBSD | SDHC memory card, program memory capacity: 16G bytes | |
Memory backup battery for FX5U, FX5UC, FX3G, FX3U, FX3GC, FX3UC | FX3U-32BL | Memory backup battery for FX5U, FX5UC, FX3G, FX3U, FX3GC, FX3UC |
Manuals
Manual title | Ver. | Language | Model name Code | Update date | Downloads (file size) |
---|---|---|---|---|---|
MELSEC iQ-F FX5U CPU Module Hardware Manual | H | English | —- | 2023/07 | JY997D53401(E)-H (0.51MB) |
MELSEC iQ-F FX5 Programming Manual (Program Design) | M | English | 09R538 | 2023/04 | JY997D55701-M (2.22MB) |
MELSEC iQ-F FX5U User’s Manual (Hardware) | U | English | 09R536 | 2021/10 | JY997D55301-U (4.98MB) |
MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks) | Z | English | 09R539 | 2024/07 | JY997D55801-Z (12.39MB) |
MELSEC iQ-F FX5 User’s Manual (Startup) | M | English | 09R545 | 2021/04 | JY997D58201-M (2.35MB) |
MELSEC iQ-F FX5S/FX5UJ/FX5U/FX5UC User’s Manual (Hardware) | K | English | 09R584 | 2024/10 | SH-082452ENG-K (7.61MB) |
MELSEC iQ-F FX5 CPU Module Function Block Reference | L | English | —- | 2024/07 | JY997D62701-L (1.44MB) |
MELSEC iQ-F FX5 User’s Manual (Application) | AD | English | 09R537 | 2024/10 | JY997D55401-AD (12.56MB) |
MELSEC iQ-F FX5 User’s Manual (Analog Control – CPU module built-in, Expansion adapter) | H | English | 09R557 | 2022/04 | JY997D60501-H (5.01MB) |
MELSEC iQ-F FX5 Ethernet, EtherNet/IP, CC-Link IE Function Block Reference | Q | English | —- | 2024/07 | JY997D64901-Q (2.62MB) |
MELSEC iQ-F FX5 User’s Manual (Positioning Control – CPU module built-in, High-speed pulse input/output module) | G | English | 09R544 | 2022/04 | JY997D56301-G (3.31MB) |
MELSEC iQ-F Cam Output Control Function Block Reference | B | English | —- | 2023/04 | SH-082060ENG-B (1.29MB) |
MELSEC iQ-F FX5 User’s Manual (Ethernet Communication) | U | English | 09R543 | 2023/04 | JY997D56201-U (6.68MB) |
MELSEC iQ-F Statistical Analysis Function Block Reference (Basic) | E | English | —- | 2024/07 | SH-082093ENG-E (1.40MB) |
MELSEC iQ-F FX5 User’s Manual (SLMP) | K | English | 09R541 | 2022/04 | JY997D56001-K (2.30MB) |
MELSEC iQ-F FX5 Predefined Protocol Support for Positioning Function Block Reference (for IAI) | E | English | —- | 2023/07 | SH-082262ENG-E (1.64MB) |
MELSEC iQ-F FX5 User’s Manual (MELSEC Communication Protocol) | G | English | 09R556 | 2022/04 | JY997D60801-G (2.00MB) |
MELSEC iQ-F FX5 Predefined Protocol Support for Positioning Function Block Reference (for SMC) | B | English | —- | 2022/04 | SH-082354ENG-B (1.27MB) |
MELSEC iQ-F FX5 User’s Manual (MODBUS Communication) | H | English | 09R542 | 2022/04 | JY997D56101-H (1.68MB) |
MELSEC iQ-F FX5 Predefined Protocol Support for Positioning Function Block Reference (for ORIENTAL MOTOR) | B | English | —- | 2022/04 | SH-082357ENG-B (1.26MB) |
MELSEC iQ-F Inverter Control for Automated Warehouses Function Block Library Reference | B | English | —- | 2023/07 | SH-082575ENG-B (4.41MB) |
MELSEC iQ-F Time Calculation Function Block Library Reference | B | English | —- | 2024/07 | SH-082656ENG-B (0.92MB) |
MELSEC iQ-F FX5 Data Logging Function Sample Ladder Reference | A | English | —- | 2017/02 | JY997D73101-A (0.67MB) |
MELSEC iQ-F Sample Ladder Reference for FX5 and Power Distribution Measuring Instrument with RS-485 Communication (MODBUS RTU Protocol) (Overseas) | B | English | —- | 2023/07 | JY997D74801-B (2.32MB) |
MELSEC iQ-F PLCopen Motion Control FB Reference | G | English | —- | 2024/07 | SH-082351ENG-G (5.06MB) |