The Mitsubishi FX3U-32MR/ES is a high-performance compact PLC CPU unit from the MELSEC-F FX3U series. It integrates 16 digital inputs (24V DC sink/source) and 16 relay outputs (2A per point, 8A max per common) in a compact 150×90×86 mm DIN-rail mountable body weighing 0.65 kg. Powered by 100-240V AC with 35W consumption, it delivers blazing fast 0.065 µs basic instruction execution with 64,000 steps program memory and 8,000 data registers. Built-in RS-422 communication port with optional USB adapter. Supports up to 256 local I/O points (384 with CC-Link/AnyWire) using FX series expansion modules. Programming via GX Works/GX Developer in Ladder, FBD, SFC, and Structured Text. Features include RUN-time program writing, real-time clock, and remote debugging via modem. CE, UL/cUL, marine (ABS, DNV, LR, BV) certified. Typical applications: small to medium machine control, packaging, material handling, HVAC control, and building automation.
Q: What does "MR" mean in FX3U-32MR/ES?
M = main unit, R = relay output type. Other variants: MT (transistor), MR (relay).
Q: Can I expand the I/O of the FX3U-32MR?
Yes, it supports up to 256 local I/O via FX series expansion modules, and up to 384 points with CC-Link or AnyWire fieldbus.
Q: What is the difference between FX3U and FX3G?
FX3U is the top-tier model with 3× faster processing (65 ns vs 210 ns), more memory (64K vs 32K steps), and larger I/O capacity (256 vs 128).
