Compact Programmable Logic Controllers


The world’s best selling compact PLC just got even better – and smaller

Bring outstanding performance and impactful capabilities to your machines.

The iQ-F Series is Mitsubishi Electric’s compact control platform. The FX5U model provides a cost effective solution that boasts ease of use, functionality, and high performance in a small panel footprint. Ideal for small to medium machines, the FX5U and FX5UC controllers enable faster decision making with access to real time data and improved machine accuracy and throughput. The FX5U and FX5UC are keys to a more profitable manufacturing environment.

Key Benefits

  • Faster machine response and increased productivity with 34 ns execution speed
  • Flexible architecture and expansion options to easily standardize for a variety of applications
  • Open connectivity and flexible networking with Ethernet, Modbus and serial communications options
  • Enhanced security options to protect intellectual property
  • Motion control capability in a compact controller platform, reducing cost and simplifying design

Improved connectivity

Various built-in functionalities

Increasing productivity & reducing TCO

Improved debugging & troubleshooting functions

Outstanding performance

With the launch of the FX5 compact PLC, Mitsubishi Electric has made the world’s best selling PLC even better. Since the launch of the original FX over 30 years ago, Mitsubishi Electric has sold over 13 million units across the globe. As the first compact PLC to be seen in the European market, the FX transformed automation by bringing PLC control and functionality into smaller, lower cost applications that would previously have had to rely solely on discrete relay-based logic. Each generation of the FX has set new standards, and not only in the compact controllers class.

  • Embedded Ethernet port – Access to Ethernet networks increases connectivity to other devices and provides access to data for making real time decisions.
  • Built-in SD card slot – The FX5U has the capability to upload and download programs, store data, and authenticate security from an SD card.
  • Large memory capacity – Increased memory allows for more complex programs, and increased capacity for comments, labels and data logging.
  • Embedded analog – The FX5U provides low cost, simple PID upload and download programs, store data, and authenticate security from an SD card

Premium micro PLC

The new FX5 PLC gives the FX a performance boost and adds new features that set benchmark standards for micro PLCs. It enables users to develop more complex and sophisticated automation systems, as well as higher performance applications, without having to migrate to a larger and more costly PLC family. At the same time, programming through the same GX Works software used for other controllers in the Mitsubishi Electric range supports scalability.

Making high performance control affordable

With their compact dimensions and unrivalled cost/performance ratio, the new FX5 PLCs offer the means to drive up innovation in numerous machine control applications and automation tasks, giving users the functionality and flexibility to realise new ideas and increase system performance.

Superior Drive Control

  • Inverter control – Control up to 16 Mitsubishi inverters over RS-485 using dedicated inverter communication instructions. It is simple to read/write parameters, monitor, and control networked Mitsubishi inverters with the FX5U.
  • Positioning – The FX5U comes with built-in capacity for 200kHz high speed inputs and outputs. This provides the capability to control up to 4 axes of positioning with stepper or servo motors. The FX5U is a cost effective solution for interrupt operation, multistage speed operation, simple linear interpolation, and simultaneous start of 2 axes.
  • Simple Motion module – The Simple Motion module (FX5-40SSC-S or FX5-80SSC-S) provides motion functionality for up to 4 or 8 axes of motion over SSCNET III/H. This compact controller has the capability for applications that require advanced synchronous control, cam control, speed‑torque control, and can be connected to FR-A800 VFDs.

Intuitive Programming Environment

  • Graphical interface – Easily configure a system and set parameters in GX Works3 programming software.
  • Multiple programming languages – IEC 61131 programming languages are supported, and can even be used in the same project simultaneously. This flexibility allows the user to program in the most efficient manner for their application.
  • Motion setup tool – GX Works3 eliminates the need for additional software when using the Simple Motion module.
FX5 Compact PLC
I/O Range (input: output)32 (1:1)64 (1:1)80 (1:1)
Maximum I/O Range (including network)256 (512)
Dimensions (WxHxD)150x90x83220x90x83285x90x83
CPU PerformanceLDmax. 40 ns
CPU PerformanceMOV100 ns
Memory size
Program64 K steps
Memory size
Comment and sourceComment: 2 MB
Source: 1 MB
Memory size
Word device56 K words
Output typeRelay, Transistor
Integrated functions
High speed
1-phase counter
200 KHz 6ch
10 KHz 2ch
Integrated functions
High speed
2-phase counter
100 Kz 3ch
5 KHz 1ch
Integrated functions
Pulse output200 KHz 4 axis (Open collector)
Simple linear interpolation
(Transitor type only)
Integrated functionsMemory card interfaceSD card
Integrated functionsCommunication portEthernet* port, RS485 1ch
Integrated functionsAnalog
Input (resolution)
2ch (12 bit)
Integrated functionsAnalog
Output (resolution)
1ch (12 bit)
Integrated functionsReal time clockRetained up to 10 days with capacitor
(Ambient temperature 25°C)
Integrated functionsService power supply (24 V DC)400 mA
Expansion board slots1 slot
AdaptorCommunication expandability2
AdaptorAnalog expandability4