USED MITSUBISHI FXSU-80M

The Mitsubishi FX5U-80M is a compact all-in-one CPU module in the MELSEC iQ-F Series of programmable logic controllers, integrating a power supply, CPU, and 80 I/O points (40 digital inputs, 40 digital outputs) in a single unit. It features 64K-step flash program memory, built-in Ethernet and RS-485 ports, high-speed counter functions, built-in analog I/O, SD card slot, and a high-speed instruction cycle time of 34 ns (LD instruction). The FX5U-80M base supports multiple output variants (relay, transistor sink, transistor source) and AC or DC power supply options, identified by the full suffix on the label (e.g., /ES, /DS, /ESS, /DSS). Programmed using GX Works3 software and compatible with the MELSEC iQ-F expansion ecosystem.
Specification
Value
Brand
Mitsubishi Electric
Model / Part Number
FXSU-80M (see note: likely FX5U-80M)
Series / Platform
MELSEC iQ-F / FX5U
Product Type
PLC CPU Module (All-in-One)
Total I/O Points
80 (40 Inputs + 40 Outputs)
Digital Inputs
40 (24 VDC, Sink/Source)
Digital Outputs
40 (Relay or Transistor — see label suffix)
Built-in Analog Inputs
2
Program Memory
64K Steps (128 KBytes) Flash
Timers
1024 points
Counters
1024 points
Data Registers
8000 points
File Registers
32768 points
Device/Label Memory
120 KBytes
Data Memory (Standard ROM)
5 MBytes
SD/SDHC Memory Card (max)
4 GB
Local I/O Points (Expandable)
256
Local + Remote I/O Points
512
Cycle Time — LD Instruction
34 ns
Cycle Time — MOV Instruction
34 ns
Power Supply (AC variants)
100–240 VAC, 50/60 Hz
Power Supply (DC variants)
24 VDC
Power Consumption (AC 80M)
45 W (typical)
5 VDC Power Supply Capacity
1100 mA
24 VDC Service Power Supply
600 mA
Ethernet Port
1 (Built-in)
RS-485 Port
1 (Built-in)
High-Speed Counter
Built-in, up to 200 kpps
Positioning Axes
Up to 4 axes (built-in)
Programming Languages
Ladder (LD), Structured Text (ST), FBD, SFC
Engineering Software
GX Works3
Dimensions W × H × D (mm)
285 × 90 × 83
Mounting Type
Panel Mount (DIN rail or screw)
Protection Class
IP10
Certifications
UL, cUL, CE (EMC)
Battery Backup
Optional (non-volatile flash standard)
⚠️ Model Number Note
"FXSU-80M" is not an official Mitsubishi part number. This is very likely a misread of "FX5U-80M" (the "5" is often OCR'd as "S"). Verify the physical label. The full suffix (e.g., /ES, /DS, /ESS) is required for the exact variant.
We warranty all items for 30 days from date of purchase.