Beckhoff CX5140-N031-0004 CX5100 Series Embedded PC

Description

Engineered for high-performance automation tasks requiring compact DIN-rail mounting, the Beckhoff CX5140-N031-0004 represents an industrial-grade controller equipped with an Intel Atom quad-core processor. This unit integrates a dedicated N031 RS422/RS485 serial option interface, allowing full-duplex communication endpoints directly from the processor assembly. Designed to operate without a fan, the device leverages passive cooling architecture to deliver robust execution of TwinCAT control tasks, making it ideal for high-speed PLC, motion control, and communication gateway applications.

Key Features

• Intel Atom Quad-Core Processor: Delivers high-speed, multi-core computational power optimized for real-time automation sequences and deterministic control loops.
• N031 Serial Interface: Standard 9-pin D-sub female socket configured for RS422/RS485 operation as a terminated full-duplex end point.
• Dual Gigabit Ethernet Ports: Dual independent RJ45 interfaces supporting 10/100/1000 Mbps for separated network topologies and control communication.
• Universal I/O Connectivity: Automatic detection and bus-switching support for either EtherCAT Terminals (E-bus) or standard Bus Terminals (K-bus).
• Robust Maintenance-Free Design: Fanless operations with solid-state storage media compatibility, minimizing mechanical failure risks in harsh environments.

Industrial Applications

• High-Speed Packaging Machinery: Serves as the primary motion control platform coordinating multi-axis synchronized drives via EtherCAT.
• Process Control Gateways: Bridges legacy field networks utilizing the RS422 serial interface to modern EtherCAT or TCP/IP enterprise layers.
• Wind Energy & Power Generation: Performs deterministic turbine control and structural monitoring under broad temperature variances.
• Distributed Building Automation: Coordinates lighting, HVAC, and subsystem integration across expansive physical facilities.

Technical Specifications

Connections and Interfaces

The N031 option provides a serial interface configured for full-duplex RS422 end point operation with internal termination resistors engaged. The connection is made via a 9-pin D-sub female connector with the following pin assignments:

Empirical Engineering Insights

Alternative Models & Compatibility

The CX5140-N031-0004 can direct-replace standard CX5140-0004 systems, provided that any system-level application profiles are updated in TwinCAT System Manager to map the virtual COM port allocated to the N031 serial chip. Note that changing physical terminal bus attachments from standard K-bus to E-bus does not require manual hardware switching, as the internal controller automatically queries and initiates the correct physical layer driver upon boot.

Application Pitfalls & Engineering Notes

Because the N031 interface features non-switchable internal terminating resistors, adding external termination blocks at the controller end of the RS422 bus segment will result in excessive signal loading. Double-termination at the local node can degrade communication signal margins, resulting in sporadic CRC or framing errors, particularly when operating at high baud rates over long distances.

Commissioning & Wiring Tips

When routing serial links beside high-voltage motor cables, verify that the 9-pin D-sub metallic hood makes robust, continuous 360-degree connection to the cable shield. Ensure that shield ground is connected only at a single ground bus reference inside the primary enclosure to block ground loop currents from traversing the communication lines.

Installation Guidelines