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Mitsubishi MELSEC iQ-R vs iQ-F (FX5U): PLC Migration & CC-Link IE TSN Setup

Mitsubishi MELSEC iQ-R vs iQ-F (FX5U): PLC Migration & CC-Link IE TSN Setup

Mitsubishi Electric's MELSEC controller architecture spans the modular flagship MELSEC iQ-R Series (high-speed synchronized processes) and the compact MELSEC iQ-F Series (FX5U / FX5UJ) replacing the legendary FX3U.


1. MELSEC iQ-R vs iQ-F (FX5U) Comparison

Feature Mitsubishi MELSEC iQ-R (R04CPU to R120CPU) Mitsubishi MELSEC iQ-F (FX5U / FX5UJ)
Program Capacity Up to 1200k steps Up to 128k steps (FX5U)
LD Instruction Speed Ultra-fast 0.98 ns High-speed 34 ns
Motion Synchronization Multi-CPU architecture (Up to 64 axes / CPU) Embedded 4-axis 200 kHz pulse positioning
Network Protocol CC-Link IE TSN (Gigabit Real-Time Bus) CC-Link IE Field Basic / Ethernet / Modbus

Explore controllers and expansion modules in the AOCTRL Mitsubishi Electric Catalog and AOCTRL Modular PLC Systems.


2. GX Works3 Project Migration from FX3U

When converting legacy FX3U ladder logic to FX5U in GX Works3:

  • Ladder instructions (e.g. PLSY, PWM, DMOV) are automatically converted to standardized Structured Text (ST) and Module FB blocks.
  • Hardware analog inputs (0-10V on FX5U CPU) replace external FX2N-2AD modules, saving cabinet space.

3. Direct Hardware Sourcing

Find brand-new sealed Mitsubishi controllers, servo drives (MR-J4, MR-JE), and GT2700 GOT HMIs on AOCTRL Industrial Automation.

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