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Mitsubishi Electric FX3U-80MT/ESS — PLCs (Programmable Logic Controllers)

Mitsubishi FX3U-80MT/ESS PLC CPU Unit, 40 Inputs, 40 Transis

MPNFX3U-80MT/ESS

Mitsubishi MELSEC-F Series FX3U-80MT/ESS, Main Unit, 40 Inputs / 40 Transistor Source Outputs, 100-240 VAC, 64K Steps RAM.

$357.00Ref. price · indicative, final on quote
Mitsubishi Electric FX3U-80MT/ESS datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

FX3U-80MT/ESS — Identification
ParameterValue
SeriesMELSEC-F SERIES
FX3U-80MT/ESS — I/O
ParameterValue
ExpandableYES
FX3U-80MT/ESS — Mechanical
ParameterValue
Weight1,2 kg

Product details

PLC main unit for 80-point local I/O systems

The Mitsubishi FX3U-80MT/ESS is a MELSEC-F series main CPU unit with 40 integrated digital inputs and 40 transistor source outputs, all fed from a 100-240 VAC supply. Program memory is 64K steps in RAM with a 65 ns basic logic cycle, and the unit is expandable up to 384 total I/O points (local plus remote). The USB interface is listed as optional, so if you need USB programming, plan for a separate adapter module.

Frequently asked questions

What is the USB capability on this unit?

USB is listed as optional — there is no built-in USB port. If USB programming is required, you will need an optional programming cable or adapter.

What type of PLC is the FX3U-80MT/ESS?

It is an FX3U series main unit from the MELSEC-F family, the workhorse micro-PLC line from Mitsubishi.

Will the FX5-C32EYT/D-TS expansion module work with this CPU?

No. The FX5-C32EYT/D-TS is an FX5 series expansion module and uses a different system bus and connector. It is not compatible with the FX3U-80MT/ESS.

MPN
FX3U-80MT/ESS