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MELSEC-F Series Data Link and Communication (RS-485)

Part Number

Configured Part Number is shown.

FX3U-485-BD

MELSEC-F Series Data Link / Communication Specifications

MELSEC-F data link / communication (RS-485): related images

External appearance of FX3U-485-BD

  • Number of channels: 1
  • Communication method: bidirectional half-duplex
  • Insulation: No
  • Maximum transmission distance: 50 m
  • Control command: RS/RS2 command

Function expansion board (for RS-485 communication)

ItemFX3U-485-BD
Transmission StandardsRS-485 standard-compliant
Maximum Transmission Distance50 m (non-insulated)
External Device Connection Method5-pole terminal block
Communication MethodBidirectional half-duplex
Communication MethodNon-procedural, dedicated protocol format 1 / format 4, parallel link, simple PC-PC link, inverter communication
Transmission Speed
(Baud Rate)
Non-Procedural,
Dedicated Protocol
300/600/1,200/2,400/4,800/9,600/19,200/38,400*2 bps
Parallel Link115,200 bps
Simple PC to PC Link38,400 bps
Power Supply / Number of Occupied Inputs/Outputs5 V DC, 40 mA (energized from the sequencer). No occupied inputs/outputs
Terminating ResistorIncorporated (switchable between 330Ωand 110Ω)

*2: Supported by FX3U base unit of Ver. 2.41 or higher

  • *See the catalog for other specifications and part numbers.
Part Number
FX3U-485-BD
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to Ship

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Basic Information

Representative Standard CE Applicable sequencer FX3U / FX3UC-32MT-LT(-2) Type of unit RS-485 Communication Function Expansion Board
External Device Connection Method European Type Terminal Block Computer Link, Non-Procedural Communication Speed(bps) 300 / 600 / 1200 / 2400 / 4800 / 9600 / 19200 Parallel Link Communication Speed(bps) 115200
Simple PC Link Communication Speed(bps) 38400 Inverter Communication Speed(bps) 4800 / 9600 / 19200

Please check the type/dimensions/specifications of the part FX3U-485-BD in the MELSEC-F Series Data Link and Communication (RS-485) series.

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