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Mitsubishi Electric FX5-485-BD — PLCs (Programmable Logic Controllers)

Mitsubishi FX5-485-BD RS-485 Communication Board, 115200 bps

MPNFX5-485-BD

Mitsubishi MELSEC iQ-F Series, RS-485/RS-422 Communication Expansion Board, FX5-485-BD, baud rate up to 115200 bps, half/full duplex, 50 m max distance, not insulated, European terminal block, 0.02 kg.

$36.00Ref. price · indicative, final on quote

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Mitsubishi Electric FX5-485-BD datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

FX5-485-BD — Mechanical
Parameter	Value
Weight	0.02 Kg

FX5-485-BD — Other specifications
Parameter	Value
Insulation	Not insulated (Between communication line and CPU module)
Baud rate*1	300/600/1200/2400/4800/9600/19200/38400/57600/115200 (bps)
Product type	Programmable Logic Controller
Connection method	European terminal block
Transmission standard	Conforming to RS-485/RS-422
Communication method*1	Half-duplex/Full-duplex
Maximum transmission distance	50 m

Product details

The FX5-485-BD is a fieldbus expansion board for the Mitsubishi MELSEC iQ-F PLC series, adding RS-485 or RS-422 serial communication via a European terminal block. It supports selectable baud rates from 300 to 115200 bps and operates in half- or full-duplex mode, with a maximum transmission distance of 50 m.

Integration notes

The board plugs directly into the CPU slot. The communication line is not insulated from the CPU module—this matters for systems requiring galvanic isolation between controller and field devices; plan for external isolation. Baud rate and other protocol parameters are configured in the engineering software (GX Works3) via the CPU parameters—no DIP switches or rotary dials on the board itself.

Frequently asked questions

What is the insulation rating between the communication line and the CPU?

The communication line is not insulated from the CPU module. External isolation is required if galvanic separation is needed.

Will the FX5-485-BD drop into a panel designed for the FX5-16ER/ES I/O module?

No. The FX5-485-BD is a comm expansion board that mounts inside the CPU base, while the FX5-16ER/ES is a separate I/O module occupying its own slot. They are not mechanically interchangeable.