Beckhoff CX5240-N031-0003 Embedded PC

Product Overview

The Beckhoff CX5240-N031-0003 is a high-performance, fanless Embedded PC from the CX5200 series. Designed for demanding control tasks, it is powered by an Intel Atom® processor, providing a compact yet powerful platform for centralized automation, motion control, and data processing. This specific model variant is equipped with a specialized RS485 interface, allowing for flexible communication with serial peripheral devices directly from the embedded controller.

Technical Configuration

The CX5200 series is renowned for its scalability and rugged design, making it an ideal choice for a wide variety of industrial automation scenarios where high processing power is required in a DIN-rail mountable form factor.

• Processor Architecture: Features an Intel Atom® processor that delivers efficient performance while maintaining a low thermal footprint, allowing for fanless operation in industrial cabinets.
• RS485 Communication: The integrated 9-pin D-sub RS485 interface is configured as a "drop point." This specific configuration includes echo functionality and provides the flexibility to manage termination settings, ensuring signal integrity over long serial cable runs.
• Scalability: Like all CX5200 devices, this unit integrates seamlessly with the Beckhoff E-bus or K-bus terminal systems, allowing the controller to expand its local I/O capabilities significantly.
• Industrial Build: The device is designed to withstand typical industrial temperature ranges and mechanical vibrations, ensuring long-term reliability in manufacturing environments.

Technical Specifications

Frequently Asked Questions

What does "configured as a drop point" mean for this RS485 interface?

In serial communication, a "drop point" configuration implies the interface is optimized to act as a node in a multi-drop network. The support for "echo" allows the device to verify that the data it transmits onto the RS485 line is consistent with what is physically on the bus, which is a useful diagnostic feature for complex serial loops.

Can I connect standard EtherCAT Terminals to this Embedded PC?

Yes. The CX5240 series supports the direct attachment of Beckhoff EtherCAT Terminals (EL series) or Bus Terminals (KL series) on the side of the device, making it a complete, all-in-one control solution.

Does the fanless design affect the ambient temperature rating?

While the device is fanless, it relies on passive convection. Ensure that you maintain the recommended clearances around the unit (typically at least 50 mm above and below) to allow heat to dissipate effectively from the housing, especially if the device is running high-load control cycles.

Engineering Integration and Operational Best Practices

• RS485 Termination: The device comes with "termination off" by default. If your RS485 network is long or running at higher baud rates, you may need to enable termination (typically 120 ohms) at the physical ends of the cable run to prevent signal reflections.
• Grounding: To protect the serial communication interface, ensure that the Embedded PC's functional earth (FE) terminal is connected to a low-impedance ground. This is particularly important for serial interfaces that may span across different electrical areas.
• Software Environment: As a Beckhoff Embedded PC, this unit is designed to run TwinCAT software. Ensure you have the compatible TwinCAT version (e.g., TwinCAT 3) installed to handle the serial hardware drivers and EtherCAT configuration.
• Power Supply: Ensure the 24 V DC power supply is stable and properly filtered. Voltage dips can cause the processor to reboot or the serial interface to drop its connection, leading to process interrupts.