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Model Segment Definition
Full model analysis: FX5U-32MT-XX
| Segment | Meaning | Description |
| FX | Base series code | Mitsubishi FX series compact PLC |
| 5U | Series generation & type | 5th-generation iQ-F series; U = Standard CPU (differentiated from UC compact type) |
| 32 | Total I/O points | 32 points total (16 inputs / 16 outputs) |
| M | Power supply type | M = Mixed power (AC/DC); D = DC24V power |
| T | Output type | T = Transistor output (sink/source); R = Relay output |
| XX | Suffix code | Terminal type / specification: |
| – /DS: DC power + Screw terminal | ||
| – /ES: AC power + Screw terminal | ||
| – /ESS: AC power + Spring terminal | ||
| – /DSS: DC power + Spring terminal |
- Core Specification Parameter Table
2.1 Basic Performance
| Parameter | Specification | Remarks |
| CPU Processor | 32-bit RISC | High-speed operation, Basic instruction: 0.065渭s/step |
| Program Memory | 64KB (max expandable to 16MB) | SD card expansion supported |
| Data Memory | 32KB (expandable) | Includes file registers, special registers, etc. |
| I/O Control Mode | Cyclic scan + Interrupt | Supports high-speed response processing |
| Max I/O Points | Local 256 + Remote 256 = 512 points | Up to 16 expansion modules connectable |
| Power Rating | AC100-240V (ES/ESS) or DC24V (DS/DSS) | Voltage fluctuation 卤10%, 50/60Hz |
| Power Consumption | Approx. 30W (ES type) / 15W (DS type) | Subject to specific model |
2.2 I/O Configuration (16IN / 16OUT)
| Type | Specification | Channel Characteristics |
| Digital Input | 16-point DC24V, Sink/Source compatible | X0-X17; Response time 0.05~10ms adjustable; Input impedance 3k惟; Input current 4.7mA |
| Digital Output | 16-point Transistor (NPN/PNP optional) | Y0-Y17; Max load 2A/point, 16A/common terminal; Response time 0.1ms; High-speed pulse output supported |
| Built-in Analog | 2AI + 1AO | Input: 12-bit, 0-10V/4-20mA |
| Output: 12-bit, 0-10V/4-20mA |
2.3 High-Speed Function & Positioning
| Function | Specification | Application Scenario |
| High-Speed Counter | Max 6ch × 200kHz + 2ch × 10kHz | Pulse counting, frequency measurement |
| Pulse Output | 4-axis × 200kHz (Y0-Y3) | Stepper / Servo positioning control |
| Positioning Function | Linear interpolation, Circular interpolation, Electronic gear / Cam | Multi-axis synchronous control |
| High-Speed Interrupt | Multiple interrupt sources supported (Input / Timer / Communication) | Real-time response for critical events |
2.4 Communication Interfaces
| Interface Type | Quantity | Specification | Protocol Support |
| Ethernet | 1 port | RJ45, 10/100Mbps | Modbus TCP, MC Protocol, SLMP, EtherNet/IP |
| RS-485 | 1 port | Terminal block, 2-wire/4-wire selectable | Modbus RTU, Non-protocol communication |
| Expansion Port | 1 port | Dedicated expansion bus | Connect FX5 series expansion & special function modules |
- Accessory List
3.1 Expansion Modules
| Module Type | Recommended Model | Function Description |
| Digital I/O Expansion | FX5-16ER/ES, FX5-32ER/ES | 16/32-point relay output expansion |
| Digital I/O Expansion | FX5-16ET/ES, FX5-32ET/ES | 16/32-point transistor output expansion |
| Analog Expansion | FX5-4AD, FX5-4DA | 4-channel analog input/output expansion |
| Temperature Module | FX5-4AD-TC, FX5-4AD-PT | 4-channel Thermocouple/RTD input |
| Communication Module | FX5-ENET/IP, FX5-232-BD | Ethernet expansion, RS-232 communication expansion |
| Positioning Module | FX5-1PG, FX5-20PG | 1-axis/2-axis pulse positioning expansion (Max 500kHz) |
3.2 Power & Connection Accessories
| Accessory Type | Model | Purpose |
| Memory Backup Battery | FX3U-32BL | Power-off retention for program & data (Service life approx. 5 years) |
| Expansion Power Module | FX5-C1PS-5V | Power supply for FX5U (DC type) expansion modules |
| Bus Converter | FX5-CNV-BUS | Compatibility conversion for FX5 to FX3 series modules |
| SD Memory Card | Max 32GB | Program storage, data logging, firmware upgrade |
| Mounting Rail | DIN standard rail | 35mm width, for PLC main unit & module installation |
| Terminal Cover | Original factory part | Protect I/O terminals against dust and short circuit |
3.3 Programming & Debugging Tools
| Tool Type | Model | Function |
| Programming Software | GX Works3 | Supports Ladder Diagram, SFC, ST and other languages; Version V1.047Z or above required |
| Programming Cable | USB-SC09-FX | Connect PC to PLC programming port (RS-422) |
| Ethernet Cable | CAT5e & above | For Ethernet communication and programming |
| Handheld Programmer | FX5U-USB-PRG | On-site quick debugging and program modification |
- Competitor Replacement / Cross-Brand Comparison
| Brand | Equivalent Model | Key Differences | Application Scenario |
| Siemens | S7-1214C DC/DC/DC | • Native Profinet, stronger network capability | Automation production line, multi-PLC networking, SCADA connection |
| • Price 1.5~2 times of FX5U | |||
| • TIA Portal has steep learning curve | |||
| Schneider | M241 CPU 16T | • Built-in Modbus TCP/RTU, CANopen supported | Small process industry, building automation |
| • Weak motion control performance | |||
| • Price close to FX5U | |||
| Omron | CP1H-X40DT-D | • 4-channel built-in analog I/O | Hybrid control, small automated equipment |
| • Equivalent high-speed counting / pulse output performance | |||
| • User-friendly CX-One software | |||
| Inovance | H5U-32MT-XP | • Domestic alternative, price ~70% of FX5U | Cost-sensitive projects, domestic replacement demand |
| • Compatible with Mitsubishi instruction system | |||
| • EtherCAT bus supported | |||
| Delta | DVP-32ES200T | • Lower price (~60% of FX5U) | Standalone simple control, budget-limited projects |
| • Simplified functions, weak high-speed performance | |||
| • Fewer communication interfaces |
- Selection Guidelines & Alternative Solutions
5.1 Core Selection Criteria
| Selection Dimension | Recommended Configuration | Not Recommended Scenario |
| I/O Points | 16IN/16OUT, ideal for small equipment | Over 32 points requires expansion; recommend FX5U-64MT directly |
| Output Type | Transistor output for high-speed switching & pulse control | Large inductive load with frequent on-off; choose FX5U-32MR relay type |
| Power Type | • Industrial mains: AC type (ES/ESS) | Voltage fluctuation site requires voltage stabilizer |
| • Mobile/Battery supply: DC type (DS/DSS) | ||
| Communication Requirement | Built-in Ethernet + RS485 meets most scenarios | PROFIBUS, DeviceNet and other buses need expansion modules |
| Motion Control | 4-axis 200kHz pulse output for small positioning | Over 4 axes or higher frequency (>500kHz); use FX5U + positioning module |
| Terminal Type | • Vibration environment: Spring terminal (ESS/DSS) | Frequent wiring replacement; recommend spring terminal |
| • Normal environment: Screw terminal (ES/DS) |
5.2 Recommended Alternative Solutions
| Application Scenario | Best Replacement Model | Reason |
| Cost Priority | Inovance H5U-32MT-XP | Similar functions, ~30% price reduction, good domestic technical support |
| Enhanced Network | Siemens S7-1214C | Stronger Profinet capability, suitable for production line integration |
| I/O Expansion Demand | FX5U-64MT | 64 I/O points onboard, reduce expansion module cost |
| High Analog Demand | FX5U-32MT+FX5-4AD+FX5-4DA | Expand to 6AI + 5AO |
| Enhanced Motion Control | FX5U-32MT+FX5-20PG | Add 2-axis 500kHz high-speed positioning |
| Compact Design | FX5UC-32MT/DSS | ~30% smaller size, suitable for limited installation space |
5.3 Key Notes
- Software Compatibility: Must use GX Works3 V1.047Z or higher; incompatible with GX Developer.
- Firmware Upgrade: Regularly update CPU firmware for latest functions and security patches.
- Expansion Limit: Max 16 expansion modules connected; total I/O points ≤ 512.
- Communication Setting: Default Ethernet IP: 192.168.3.3; modifiable via software or DIP switch.
- Power Capacity: DC24V service power max output 400mA; additional external power required with many expansion modules.
Mitsubishi FX5U-32MT is a 16-input/16-output transistor CPU of iQ-F series. It features high-speed operation (0.065μs/step), built-in analog I/O (2AI+1AO), 4-axis 200kHz positioning and dual communication ports (Ethernet+RS485). It is widely applied to standalone control of small automated equipment, packaging machines, dispensing machines, etc.
When selecting, choose the proper suffix model according to power type, terminal preference, communication and motion control requirements, and configure expansion modules reasonably to meet specific application demands.
Mitsubishi Compact PLC Model List (Full Classification)
This document sorts Mitsubishi FX series compact PLCs from latest to legacy, covering three major categories: iQ-F Series (FX5), MELSEC-F Series (FX3), and Classic Series (FX2N/FX1N/FX1S). It includes model structure, core specifications and application scenarios for easy selection and comparison.
- MELSEC iQ-F Series (FX5) – New Generation High-Performance Compact PLC
1.1 Model Naming Rule
FX5[Series]-[I/O Points][Output Type]/[Power & Terminal Type]
| Segment | Meaning | Optional Code |
| FX5 | Base series | FX5S (Standard), FX5U (High-Performance), FX5UC (Compact), FX5UJ (Economy) |
| I/O Points | Total input & output points | 16/24/32/40/64/80 |
| Output Type | Output mode | M=Mixed output (partial models), R=Relay output, T=Transistor output (Sink/Source) |
| Power & Terminal | Power supply & wiring type | ES=AC+Screw terminal, ESS=AC+Spring terminal, DS=DC+Screw terminal, DSS=DC+Spring terminal |
1.2 Complete Model List
FX5S Series (Standard, Non-expandable)
| Model | I/O Configuration | Output Type | Power/Terminal | Core Features |
| FX5S-16MR/ES | 8IN/8OUT | Relay | AC/Screw | Basic type, no built-in analog |
| FX5S-16MT/ES | 8IN/8OUT | Transistor | AC/Screw | Basic type, high-speed pulse output supported |
| FX5S-24MR/ES | 12IN/12OUT | Relay | AC/Screw | 2-channel built-in analog input |
| FX5S-24MT/ES | 12IN/12OUT | Transistor | AC/Screw | 2-channel analog input, 2-axis 100kHz pulse output |
| FX5S-30MR/ES | 16IN/14OUT | Relay | AC/Screw | 2-channel built-in analog input |
| FX5S-30MT/ES | 16IN/14OUT | Transistor | AC/Screw | 2-channel analog input, 2-axis 100kHz pulse output |
| FX5S-40MR/ES | 24IN/16OUT | Relay | AC/Screw | 2AI+1AO built-in analog |
| FX5S-40MT/ES | 24IN/16OUT | Transistor | AC/Screw | 2AI+1AO analog, 2-axis 100kHz pulse output |
FX5U Series (High-Performance, Expandable)
| Model | I/O Configuration | Output Type | Power/Terminal | Core Features |
| FX5U-32MR/ES | 16IN/16OUT | Relay | AC/Screw | 2AI+1AO, 4-axis 200kHz pulse output |
| FX5U-32MT/ES | 16IN/16OUT | Transistor | AC/Screw | 2AI+1AO, 4-axis 200kHz pulse output |
| FX5U-64MR/ES | 32IN/32OUT | Relay | AC/Screw | 2AI+1AO, 4-axis 200kHz pulse output |
| FX5U-64MT/ES | 32IN/32OUT | Transistor | AC/Screw | 2AI+1AO, 4-axis 200kHz pulse output |
| FX5U-80MR/ES | 40IN/40OUT | Relay | AC/Screw | 2AI+1AO, 4-axis 200kHz pulse output |
| FX5U-80MT/ES | 40IN/40OUT | Transistor | AC/Screw | 2AI+1AO, 4-axis 200kHz pulse output |
| FX5U-32MR/ESS | 16IN/16OUT | Relay | AC/Spring | Spring terminal, vibration resistance |
| FX5U-32MT/ESS | 16IN/16OUT | Transistor | AC/Spring | Spring terminal, vibration resistance |
| FX5U-32MR/DS | 16IN/16OUT | Relay | DC/Screw | DC24V power, suitable for mobile equipment |
| FX5U-32MT/DS | 16IN/16OUT | Transistor | DC/Screw | DC24V power, suitable for mobile equipment |
FX5UC Series (Compact, Expandable)
| Model | I/O Configuration | Output Type | Power/Terminal | Core Features |
| FX5UC-32MR/DSS | 16IN/16OUT | Relay | DC/Spring | ~30% smaller size, built-in Ethernet+RS485 |
| FX5UC-32MT/DSS | 16IN/16OUT | Transistor | DC/Spring | ~30% smaller size, built-in Ethernet+RS485 |
| FX5UC-64MR/DSS | 32IN/32OUT | Relay | DC/Spring | ~30% smaller size, built-in Ethernet+RS485 |
| FX5UC-64MT/DSS | 32IN/32OUT | Transistor | DC/Spring | ~30% smaller size, built-in Ethernet+RS485 |
FX5UJ Series (Economy, Expandable)
| Model | I/O Configuration | Output Type | Power/Terminal | Core Features |
| FX5UJ-24MR/ES | 14IN/10OUT | Relay | AC/Screw | Simplified FX5U, lower price |
| FX5UJ-24MT/ES | 14IN/10OUT | Transistor | AC/Screw | Simplified FX5U, lower price |
| FX5UJ-48MR/ES | 28IN/20OUT | Relay | AC/Screw | Simplified FX5U, lower price |
| FX5UJ-48MT/ES | 28IN/20OUT | Transistor | AC/Screw | Simplified FX5U, lower price |
- MELSEC-F Series (FX3) – Mature & Stable Compact PLC
2.1 Model Naming Rule
| Segment | Meaning | Optional Code |
| FX3 | Base series | FX3S(Standard), FX3G(Enhanced), FX3U(High-Performance), FX3GC(Compact), FX3UC(Ultra-Compact) |
| I/O Points | Total I/O points | 14/24/40/64/80/128 |
| Output Type | Output mode | M=Mixed, R=Relay, T=Transistor |
| Power Type | Power supply | AC=AC100-240V, DC=DC24V |
| Special Function | Extra feature | ES=Screw terminal, ESS=Spring terminal, D=DC power, -ADP=Special adapter |
2.2 Complete Model List
FX3S Series (Standard, Non-expandable)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX3S-14MR/ES | 8IN/6OUT | Relay | AC | Basic type, no expansion capability |
| FX3S-14MT/ES | 8IN/6OUT | Transistor | AC | Basic type, no expansion capability |
| FX3S-24MR/ES | 16IN/8OUT | Relay | AC | 2-channel built-in analog input |
| FX3S-24MT/ES | 16IN/8OUT | Transistor | AC | 2-channel built-in analog input |
| FX3S-30MR/ES | 16IN/14OUT | Relay | AC | 2-channel built-in analog input |
| FX3S-30MT/ES | 16IN/14OUT | Transistor | AC | 2-channel built-in analog input |
FX3G Series (Enhanced, Expandable)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX3G-24MR/ES | 14IN/10OUT | Relay | AC | Expandable to 128 points, built-in Ethernet |
| FX3G-24MT/ES | 14IN/10OUT | Transistor | AC | Expandable to 128 points, built-in Ethernet |
| FX3G-40MR/ES | 24IN/16OUT | Relay | AC | Expandable to 128 points, built-in Ethernet |
| FX3G-40MT/ES | 24IN/16OUT | Transistor | AC | Expandable to 128 points, built-in Ethernet |
| FX3G-60MR/ES | 36IN/24OUT | Relay | AC | Expandable to 128 points, built-in Ethernet |
| FX3G-60MT/ES | 36IN/24OUT | Transistor | AC | Expandable to 128 points, built-in Ethernet |
FX3U Series (High-Performance, Expandable)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX3U-16MR/ES | 8IN/8OUT | Relay | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-16MT/ES | 8IN/8OUT | Transistor | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-32MR/ES | 16IN/16OUT | Relay | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-32MT/ES | 16IN/16OUT | Transistor | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-48MR/ES | 24IN/24OUT | Relay | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-48MT/ES | 24IN/24OUT | Transistor | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-64MR/ES | 32IN/32OUT | Relay | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-64MT/ES | 32IN/32OUT | Transistor | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-80MR/ES | 40IN/40OUT | Relay | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-80MT/ES | 40IN/40OUT | Transistor | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-128MR/ES | 64IN/64OUT | Relay | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
| FX3U-128MT/ES | 64IN/64OUT | Transistor | AC | Expandable to 256 points, Basic instruction 0.065μs/step |
FX3GC / FX3UC Series (Compact, Expandable)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX3GC-32MR/ES | 16IN/16OUT | Relay | AC | Compact size, expandable to 128 points |
| FX3GC-32MT/ES | 16IN/16OUT | Transistor | AC | Compact size, expandable to 128 points |
| FX3UC-32MT-LT | 16IN/16OUT | Transistor | DC | Ultra-thin design, expandable to 256 points |
| FX3UC-64MT-LT | 32IN/32OUT | Transistor | DC | Ultra-thin design, expandable to 256 points |
- Classic Series (FX2N/FX1N/FX1S) – Discontinued but Widely Used
3.1 FX2N Series (High-Performance)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX2N-16MR-001 | 8IN/8OUT | Relay | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-16MT-001 | 8IN/8OUT | Transistor | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-32MR-001 | 16IN/16OUT | Relay | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-32MT-001 | 16IN/16OUT | Transistor | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-48MR-001 | 24IN/24OUT | Relay | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-48MT-001 | 24IN/24OUT | Transistor | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-64MR-001 | 32IN/32OUT | Relay | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-64MT-001 | 32IN/32OUT | Transistor | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-80MR-001 | 40IN/40OUT | Relay | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-80MT-001 | 40IN/40OUT | Transistor | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-128MR-001 | 64IN/64OUT | Relay | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
| FX2N-128MT-001 | 64IN/64OUT | Transistor | AC | Basic instruction 0.08渭s/step, expandable to 256 points |
3.2 FX1N Series (Standard)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX1N-14MR-001 | 8IN/6OUT | Relay | AC | Expandable to 128 points, built-in RS485 |
| FX1N-14MT-001 | 8IN/6OUT | Transistor | AC | Expandable to 128 points, built-in RS485 |
| FX1N-24MR-001 | 14IN/10OUT | Relay | AC | Expandable to 128 points, built-in RS485 |
| FX1N-24MT-001 | 14IN/10OUT | Transistor | AC | Expandable to 128 points, built-in RS485 |
| FX1N-40MR-001 | 24IN/16OUT | Relay | AC | Expandable to 128 points, built-in RS485 |
| FX1N-40MT-001 | 24IN/16OUT | Transistor | AC | Expandable to 128 points, built-in RS485 |
| FX1N-60MR-001 | 36IN/24OUT | Relay | AC | Expandable to 128 points, built-in RS485 |
| FX1N-60MT-001 | 36IN/24OUT | Transistor | AC | Expandable to 128 points, built-in RS485 |
3.3 FX1S Series (Micro Type)
| Model | I/O Configuration | Output Type | Power | Core Features |
| FX1S-10MR-001 | 6IN/4OUT | Relay | AC | Non-expandable, for small equipment |
| FX1S-10MT-001 | 6IN/4OUT | Transistor | AC | Non-expandable, for small equipment |
| FX1S-14MR-001 | 8IN/6OUT | Relay | AC | Non-expandable, for small equipment |
| FX1S-14MT-001 | 8IN/6OUT | Transistor | AC | Non-expandable, for small equipment |
| FX1S-20MR-001 | 12IN/8OUT | Relay | AC | Non-expandable, for small equipment |
| FX1S-20MT-001 | 12IN/8OUT | Transistor | AC | Non-expandable, for small equipment |
| FX1S-30MR-001 | 16IN/14OUT | Relay | AC | Non-expandable, for small equipment |
| FX1S-30MT-001 | 16IN/14OUT | Transistor | AC | Non-expandable, for small equipment |
- Selection Quick Reference
| Series | Performance Level | Max I/O Expansion | Built-in Functions | Application Scenario |
| FX5U | Highest | 512 points | Ethernet+RS485+Analog I/O+4-axis positioning | Complex standalone control, high-speed motion control |
| FX5S | High | Non-expandable | Analog I/O+2-axis positioning | Small equipment, no expansion required |
| FX5UC | High | 512 points | Ethernet+RS485+Analog I/O+4-axis positioning | Limited installation space, complex control |
| FX3U | Medium | 256 points | High-speed operation, multi-axis positioning | Mature applications, cost-sensitive projects |
| FX3G | Medium-Low | 128 points | Ethernet, basic positioning | Medium & small equipment, network demand |
| FX2N | Medium (Discontinued) | 256 points | High-speed operation | Old equipment maintenance, spare parts replacement |
| FX1N | Low (Discontinued) | 128 points | Basic communication | Simple control, low cost demand |
| FX1S | Lowest (Discontinued) | Non-expandable | No expansion capability | Micro equipment, minimal control |
- Key Remarks
- Software Compatibility
FX5 Series: GX Works3 V1.047Z or above required
FX3 Series: Supports GX Works2 and GX Developer
Classic Series: Only supports GX Developer
- Output Type Selection
Relay Output (R): Suitable for AC load & inductive load; Contact life ~100,000 times
Transistor Output (T): Suitable for DC load & high-speed switching; Response time 0.1ms, long service life
- Terminal Type Selection
Screw Terminal (ES/DS): Firm wiring for normal environment
Spring Terminal (ESS/DSS): Fast wiring for vibration environment
- Discontinued Notice
FX2N/FX1N/FX1S are discontinued; recommended replacement: FX5S / FX3G
FX3 Series still in mass production with stable cost-performance.
