Mitsubishi Electric FX3U 485 BD Installation Manual

Mitsubishi Electric FX3U 485 BD manual cover

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Year 2018

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Mitsubishi Electric FX3U 485 BD Specification

The Mitsubishi Electric FX3U-485-BD is a communication board designed to enhance the functionality of the FX3U series programmable logic controllers (PLCs) by providing RS-485 communication capabilities. This compact and efficient module enables the PLC to connect with other devices using the RS-485 protocol, which is widely utilized for industrial communication due to its robustness over long distances and in electrically noisy environments. The FX3U-485-BD supports both master and slave configurations, allowing it to be versatile in its application across various network topologies.

The module is directly attachable to the FX3U base unit, ensuring seamless installation without the need for additional mounting hardware or complex wiring. It operates with a communication speed ranging from 300 to 115,200 bps, offering flexibility in data transmission rates to suit different application requirements. The module supports a range of communication protocols, including but not limited to, Modbus RTU, which is prevalent in industrial automation environments.

Power consumption is minimal, drawing directly from the PLC base unit, ensuring efficient energy use without requiring an independent power source. The FX3U-485-BD is engineered with high-quality components to ensure reliable performance in industrial settings. It also features built-in surge protection to safeguard against voltage spikes, thereby enhancing the durability and longevity of the connected devices. Overall, the Mitsubishi Electric FX3U-485-BD communication board is a vital accessory for expanding the connectivity options of the FX3U PLC series, enabling efficient and reliable industrial communication solutions.

Mitsubishi Electric FX3U 485 BD F.A.Q.

How do I connect the FX3U-485-BD to an FX3U PLC?

To connect the FX3U-485-BD to an FX3U PLC, you need to attach the board directly onto the left side of the FX3U main unit. Make sure the power is off before installation. Secure the board using the provided screws.

What communication protocols are supported by the FX3U-485-BD?

The FX3U-485-BD supports RS-485 communication protocols, including Modbus RTU and Mitsubishi's own protocol. It enables communication with various peripheral devices.

How can I troubleshoot communication issues with the FX3U-485-BD?

Check the wiring connections and ensure they are secure. Verify the communication settings, such as baud rate and parity, match those of the connected devices. Use diagnostic tools to monitor data flow and identify any communication errors.

What is the maximum communication distance for the FX3U-485-BD?

The maximum communication distance for the FX3U-485-BD is approximately 1,200 meters (4,000 feet) when using appropriate cabling and termination resistors.

Can I use the FX3U-485-BD with other Mitsubishi PLC models?

The FX3U-485-BD is specifically designed for use with the FX3U series PLCs. It may not be compatible with other Mitsubishi PLC models, so verify compatibility before attempting to use it with different models.

How do I configure the FX3U-485-BD for Modbus communication?

To configure the FX3U-485-BD for Modbus communication, set the appropriate communication parameters, such as station number, baud rate, and parity, using PLC programming software. Ensure that the Modbus protocol is selected in the communication settings.

What maintenance is required for the FX3U-485-BD?

Regularly inspect the FX3U-485-BD for signs of wear or damage. Ensure that all connections are secure and free from corrosion. Clean the unit periodically to remove dust and debris that may affect performance, and check for firmware updates.

How can I test the FX3U-485-BD after installation?

To test the FX3U-485-BD, establish a communication link with a known working device. Use diagnostic tools or software to send and receive test signals, verifying that data transmission is successful without errors.

What are the power requirements for the FX3U-485-BD?

The FX3U-485-BD draws power from the FX3U PLC main unit. Ensure that the main unit's power supply is adequate to support additional modules like the 485-BD. No separate power supply is needed for the board.

Can the FX3U-485-BD be used in a network with multiple devices?

Yes, the FX3U-485-BD can be used in a multi-drop network configuration with multiple devices. Ensure that each device has a unique address and that the network is properly terminated to prevent signal reflection.