What this part is
The Mitsubishi FX2NC-CNV-1F is the expansion module connection (CNV) adaptor that bridges an FX2NC extension block onto the FX2N base — labelled by the manufacturer as Product Type 'Expansion Module Connection', Product No. FX2NC-CNV-1F. It lives on the right-hand side of an FX2N main unit as the slave-side interface to a rightmost I/O or special-function block, which is the role the FX2NC family assigns to any unit carrying the 'CNV-1F' designation. The housing footprint is 9 mm wide by 5.5 mm high by 8.7 mm deep, so its DIN-rail demand on an existing FX2N backplane is nominal — a single slot in the extension chain, not a free-standing device.
Sourcing close
For an existing FX2N stack that needs the connector replaced, book against an RFQ with the order code and the line number; we route it through the warehouse-surplus channel appropriate to an EOL expansion adaptor and report back with availability and an indicative timeline.