EquipVector
Evidence-backed decisions for obsolete industrial parts

Mitsubishi Electric · PLC CPU · FX2N 80-pt relay 100-240VAC

Mitsubishi Electric FX2N-80MR-ES/UL

Discontinued

Analysis reviewed: September 12, 2026

What should replace this part?

The verified replacement is FX5U-80MR/ES. This is a migration, not a drop-in swap.

Move to the FX5U-80MR/ES and budget the program conversion — repair ended in 2019

Your options

FX5U-80MR/ES — the table-named 80-point successor
A stocked iQ-F unit with 80 built-in digital I/O on the same 100-240VAC supply class. The legacy table carries an explicit warning: suggested part numbers are not always drop-in replacements, and the swap can force program and wiring changes.
Repair or source a used 80MR
No manufacturer or third-party repair channel is confirmed for this exact model now that the factory window is closed. Verify any used unit by its full order code, including the ES/UL suffix.

What will need to change?

SoftwareThe project moves to GX Works3 for the iQ-F platform. Instructions, devices, and parameters can change in the move, so budget conversion and bench-test time rather than a straight download.
WiringTerminal layout and module dimensions differ between the FX2N and FX5U base units. Re-terminate the field wiring and check the panel layout before the new unit arrives.
I/OThe 80-point count carries over on paper, but a 128-point FX2N consolidates down to 80 points on the FX5U. Count physical points and expansion needs before committing.
AccessoriesSpecial-function blocks map per the same legacy table (for example FX2N-4AD to FX5-4AD), while rows marked N/A have no path and need a redesign. Map each attached module before ordering.

For anything not listed here, check the replacement manual against your existing configuration.

Need help confirming this replacement?

Send us the part number and current setup for FX2N-80MR-ES/UL. We'll help determine whether you need a replacement, repair, original-stock sourcing, or a migration.

Request a replacement review

Can I still buy the original?

Repair — Not confirmed for this exact modelUsed — Not confirmed for this exact modelRefurbished — Not confirmed for this exact model

We did not verify current new-original stock for this exact part.

Lifecycle

Status: Discontinued

Discontinuation date: 2012 (repair ended 2019)

Lifecycle source · us.mitsubishielectric.com

Technical evidence

The recommendation above is based on the sources listed here. OEM source means the manufacturer published it; third-party source means a distributor, repair company or reseller states it. Confidence reflects how directly those sources support the recommendation: High — directly supported by manufacturer documentation. Medium — supported by family-level, secondary, or otherwise less-direct evidence. Low — limited or indirect evidence; verify independently before ordering.

OEM / manufacturer sources

OEM source Confidence: High Mitsubishi Electric US (FX2N legacy page)
The legacy table maps FX2N-80MR-ES/UL to the FX5U-80MR/ES, and maps FX2N-128MR-ES/UL to the same FX5U-80MR/ES with fewer points.
Source excerpt“FX2N-80MR-ES/UL Suggested Replacement FX5U-80MR/ES; FX2N-128MR-ES/UL Suggested Replacement FX5U-80MR/ES”
View source · Note: Exact order-code rows in the Main Units table, opened and read.
OEM source Confidence: Medium Mitsubishi Electric US (FX2N legacy page)
The FX2N series ran from 1997 to its 2012 discontinuation with repair through 2019, and the FX5U or FX5UC takes the place of FX2N or FX2NC.
Source excerpt“Lifecycle: Introduced (1997) - Discontinued (2012); Service Life: Repair Period Ends 2019”
View source · Note: Series-level dates covering the 80MR.
OEM source Confidence: Medium Mitsubishi Electric US (iQ-F selection guide) · 2023-04
The iQ-F selection guide lists the FX5U-80MR/ES as a stocked unit with 80 built-in digital inputs and outputs.
Source excerpt“Model Number FX5U-80MR/ES; Stocked Item S; Built-In Digital Inputs/Outputs 80”
View source

Limitation: The lifecycle dates are series-level. The legacy table warns that a main-unit swap can force an upgrade of the entire system, so price the expansion modules and the program conversion with the CPU.

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