CX2040-N031-0004 BECKHOFF Basic CPU Module Intel Core i7 RS422 Interface

Product Overview

The CX2040-N031-0004 (CX2040N0310004) is a high-performance Basic CPU module belonging to the CX2000 series, designed for multi-core processing in demanding industrial automation environments. Equipped with an Intel Core i7 processor, this unit serves as the central control intelligence for large-scale applications requiring high computational power, such as complex motion control, high-speed vision systems, and intensive data processing in real-time. This specific configuration includes a factory-installed RS422 interface, facilitating robust, long-distance serial communication with high noise immunity. By combining powerful CPU architecture with modular I/O flexibility, the CX2040-N031-0004 delivers a scalable, high-end controller solution that minimizes hardware overhead while maximizing throughput for mission-critical industrial tasks.

Technical Configuration

The CX2040-N031-0004 features a specialized communication sub-assembly (-N031) integrated directly into the basic CPU housing. This interface is implemented as a 9-pin D-sub socket configured for RS422 full-duplex end-point operation. To ensure signal stability over extended distances and in high-interference environments, the module is delivered with internal termination permanently active (ON). This hardware-level termination matches line impedance and prevents data corruption caused by signal reflections. The CPU architecture supports the TwinCAT 3 runtime environment, allowing for multi-core execution of PLC, NC, and CNC tasks. The robust mechanical design includes a high-performance cooling system and a dedicated internal system bus for seamless expansion with CX2000 power supply and I/O modules.

Technical Specifications

Technical FAQs

Can the RS422 port on this CPU be used for RS485 communication?

No. This specific configuration (-N031) is hardware-optimized for RS422 (4-wire) communication with fixed termination. Attempting to use it for RS485 (2-wire) may result in signal collisions or lack of data integrity. For RS485 requirements, the -N030 interface option should be selected.

Is the internal termination switchable via software?

No, the termination for the CX2040-N031-0004 is hardware-integrated and set to "ON." This is specifically intended for end-point configurations where the CPU acts as the final node in a serial network segment.

What operating systems are supported by this Basic CPU module?

The CX2040 series typically supports Windows Standard Embedded 7 or Windows 10 IoT Enterprise. This allows for the installation of standard Windows software alongside the TwinCAT 3 real-time environment for integrated HMI and control functions.

Engineering & Installation Guide

• Serial Network Topology: Because this module has internal termination enabled, it must be positioned at one of the physical ends of the RS422 cable run. If the CPU is placed in the middle of a multi-drop network, signal reflections may occur, leading to communication errors.

• Thermal Considerations: The CX2040 is a high-performance CPU that generates significant heat during multi-core operations. Ensure the intake and exhaust vents are not obstructed. Maintain at least 30 mm of vertical clearance above and below the unit on the DIN rail to allow for proper airflow from the integrated cooling system.

• Cabling Requirements: Use shielded twisted-pair (STP) cables for the RS422 interface. The D-sub 9-pin connector shell should be connected to the cable shield to provide a 360-degree discharge path for electromagnetic noise, protecting the high-speed CPU from serial line surges.