FX3U-CNV-BD Mitsubishi MELSEC-FX3U PLC Expansion Board, Comm Converter Module, Adapter Unit

FX3U-CNV-BD

Mitsubishi-FX3U-extension

FX3U-CNV-BD-communication

FX3U-CNV-BD

FX3U-CNV-BD is a Mitsubishi-FX3U-extension communication board enabling FX3U-CNV-BD-communication via RS-422/485 interfaces. Designed for seamless integration with FX3U PLCs, it supports protocols like N:N network and Modbus RTU, ideal for industrial automation connectivity solutions.

Specification

SEODescription

The FX3U-CNV-BD is a Mitsubishi-FX3U-extension communication interface board designed to enhance the connectivity of the FX3U PLC series. Mounted directly on the main unit, it provides FX3U-CNV-BD-communication capabilities via RS-422/485 or RS-232 ports, enabling seamless integration with peripherals, HMI devices, and other industrial systems. The module supports direct connection to up to 8 extension units, expanding system scalability. Operating within a 24V DC voltage range and a temperature range of 0°C to 55°C, it is ideal for automation, manufacturing, and process control applications. Key advantages include simplified wiring, real-time data exchange, and compatibility with Mitsubishi’s MELSEC protocols. However, it requires precise configuration for protocol settings and lacks built-in isolation, necessitating external protection in harsh environments.

SEOSpecification

Parameter	Specification
Product Model	FX3U-CNV-BD
Compatibility	Mitsubishi FX3U Series PLCs
Function	Mitsubishi-FX3U-extension for communication interface expansion
Communication Interface	RS-485 (via FX3U-CNV-BD-communication board)
Supported Protocols	N:N Network, Parallel Link, Computer Link, MODBUS RTU
Power Supply	5V DC from PLC main unit
Dimensions	55mm x 40mm x 12.5mm (W x H x D)
Mounting	Direct installation on FX3U PLC
Isolation	Photocoupler isolation for communication circuits
Weight	Approx. 0.05kg

SEOQandA

question:Can the company provide upgraded or alternative models?
answer:Yes, we offer upgraded models and suggest alternatives based on availability and compatibility.
question:Can I schedule official courier pickup myself?
answer:Yes, you can arrange self-pickup via approved carriers after coordinating with our logistics team.
question:Does the company provide technical selection services?
answer:Yes, we offer technical support to help select suitable models for your requirements.

SEOQandA_Product

question:How to resolve communication failure between FX3U-CNV-BD and connected modules?
answer:Check wiring integrity, ensure correct baud rate settings, and verify module address configurations.
question:Why does the FX3U-CNV-BD not power connected expansion modules?
answer:Confirm external 24V DC power is properly connected to the designated power terminals on the adapter.
question:How to fix incorrect module recognition after installing FX3U-CNV-BD?
answer:Verify module address settings match PLC configuration and test modules on another PLC to isolate faults.
question:Why do input/output signals malfunction with FX3U-CNV-BD?
answer:Inspect terminal block connections for loose wires and validate polarity alignment per hardware manual.
question:How to troubleshoot unstable FX3U-CNV-BD performance during operation?
answer:Ensure secure mounting on PLC base unit, check for environmental interference, and update PLC firmware.