MITSUBISHI
Mitsubishi FX3U-485-ADP-MB MELSEC-F RS-485 Communication Adapter
Mitsubishi FX3U-485-ADP-MB MELSEC-F RS-485 Communication Adapter
99 in stock
Couldn't load pickup availability
Mitsubishi Electric FX3U‑485‑ADP‑MB is a communication special adapter for the MELSEC‑F FX3U series programmable logic controller (PLC) system. Connects to the left side of the FX3U main unit and provides one RS‑485 isolated communication channel. Supports Modbus RTU/ASCII (master/slave), non‑protocol communication, computer link, parallel link, N:N network, and inverter communication. Photocoupler isolation ensures reliable signal transmission in industrial environments. Up to 32 slave devices can be controlled by one master station in Modbus RTU mode. Built‑in terminal resistor selector switch (330 Ω, OPEN, 110 Ω). LED status indicators (POWER, RD, SD). 17.6 mm width, DIN rail mounting.
Applications:
-
Modbus RTU/ASCII networking with inverters, HMIs, sensors and actuators
-
Multi‑drop RS‑485 communication between FX3U PLCs and third‑party devices
-
Inverter parameter setting and monitoring via Mitsubishi inverter protocol
-
Legacy system upgrade requiring Modbus connectivity for FX2N/FX3U configurations
Core Specifications:
| Parameter | Specification |
|---|---|
| Product type | Communication special adapter (RS‑485) |
| Number of channels | 1 |
| Communication method | Half‑duplex, bidirectional |
| Transmission speed | 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps |
| Transmission distance | Total extension ≤ 500 m (≤ 50 m with certain BD‑type adapters on connected equipment) |
| Communication protocols | Modbus RTU/ASCII (master/slave), non‑protocol, computer link (dedicated formats 1/4), parallel link, N:N network, inverter communication |
| Isolation | Photocoupler isolation |
| Terminal resistor | Built‑in selector switch (330 Ω / OPEN / 110 Ω) |
| Connection type | European‑type removable terminal block |
| Indicators | POWER (green), RD (receive data, green), SD (send data, green) |
| Internal power supply | 5 V DC, 20 mA (from PLC main unit) |
| Occupied I/O points | 0 points (does not consume PLC I/O allocation) |
| Number of connectable slaves (Modbus master mode) | 32 slaves |
| Maximum read data (Modbus) | 125 words or 2000 coils |
| Maximum write data (Modbus) | 123 words or 1968 coils |
| Protection rating | IP2X |
| Width | 17.6 mm |
| Height | 90 mm |
| Depth | 74 mm (approx.) |
| Weight | 0.08 kg |
| Operating temperature | 0 °C … 55 °C |
System Integration:
-
This communication adapter belongs to the Mitsubishi Electric MELSEC‑F series.
-
Connects to the left side of FX3S, FX3G, FX3GC, FX3U, FX3UC series PLCs.
-
For FX3S connection, FX3S‑CNV‑ADP is required. For FX3G connection, FX3G‑CNV‑ADP is required. For FX3U connection, a function expansion board is required.
-
Supports dedicated communication instructions (RS/RS2) for non‑protocol and inverter communication.
-
Maximum 2 special adapters can be connected to FX3U/FX3UC main units.
Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.
Related Products:
-
FX3U‑232ADP‑MB – RS‑232 communication adapter for FX3U
-
FX3U‑485‑BD – RS‑485 function expansion board (non‑isolated, 50 m)
-
FX3G‑485‑BD – RS‑485 function expansion board for FX3G (non‑isolated, 50 m)
-
FX3S‑CNV‑ADP – Conversion adapter for FX3S connection
-
FX3G‑CNV‑ADP – Conversion adapter for FX3G connection
Share
