{"product_id":"cx9020-n031-0002-beckhoff-embedded-pc-basic-cpu-module","title":"CX9020-N031-0002 BECKHOFF Embedded PC Basic CPU Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCX9020-N031-0002 (CX9020N0310002)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a compact, DIN rail-mountable Ethernet control system engineered for high-performance automation tasks. Driven by a powerful 1 GHz ARM Cortex-A8 processor, this\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBasic CPU module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the intelligence hub for decentralized control architectures. This specific configuration features a factory-integrated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS485 interface\u003c\/strong\u003e, providing seamless connectivity for legacy serial devices and point-to-point communication. In demanding industrial environments such as water treatment facilities, smart building automation, and distributed power generation, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCX9020-N031-0002\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures maximum system uptime by consolidating PLC, Motion Control, and Visualization into a single, robust hardware platform.\u003c\/p\u003e\n\u003ch3\u003eInterface Architecture and Communication Logic\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eN031\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esuffix designates a specialized hardware expansion: the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS485 interface\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia a 9-pin D-sub socket. Engineered for reliability, this module is configured as a \"drop point\" without echo, making it ideal for bus-system integration where multiple slaves communicate with a master controller. The termination is set to \"off\" by default, allowing engineers to implement external termination based on specific network topology requirements. Unlike standard PC interfaces, this module is directly integrated into the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCX9020\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esystem image, ensuring low-latency data polling and high-speed processing of Modbus RTU or other serial protocols.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCX9020-N031-0002\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBECKHOFF\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProcessor\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eARM Cortex-A8, 1 GHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInterface Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 (9-pin D-sub socket)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDrop point, without echo, termination off\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWindows Embedded Compact 7\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMemory\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 GB DDR3 RAM (Internal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-25 to +60 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.0 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e99 mm x 122 mm x 91 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMax 12 W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOperational Troubleshooting \u0026amp; Compatibility FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the RS485 termination managed on the CX9020-N031-0002?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe internal termination for this module is set to \"off\". For reliable data transmission over long distances or high baud rates, an external 120 Ohm resistor must be applied at the physical start and end points of the RS485 bus to prevent signal reflection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this unit be used as a replacement for older CX9010 units?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCX9020\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eseries is the direct successor to the CX9010. It offers significantly higher processing power and memory. However, the TwinCAT project must be recompiled for the ARM architecture and the hardware configuration updated in the System Manager to recognize the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eN031\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRS485 interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the environmental resilience rating for this CPU module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module is designed for extended thermal ranges, supporting operations from -25 to +60 deg C. The fanless design reduces mechanical failure points, making it highly suitable for high-vibration applications in the renewable energy sector.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation and Commissioning Protocol\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding and Grounding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTo mitigate Electromagnetic Interference (EMI) on the RS485 line, use high-quality twisted-pair shielded cable. The shield should be grounded at a single point (typically the control cabinet entry) to avoid ground loops that could corrupt the CPU's internal logic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlthough the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCX9020-N031-0002\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis fanless, maintain a minimum of 30 mm clearance above and below the unit for natural convection. Vertical mounting on a horizontal DIN rail is the preferred orientation to optimize heat dissipation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMicroSD Handling:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the MicroSD card (containing the OS and TwinCAT runtime) is properly seated and locked before powering the unit. Never remove the storage media while the \"Disk\" LED is active to prevent file system corruption.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIndustrial Durability and Engineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBECKHOFF CX9020\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eseries utilizes a magnesium alloy and high-grade polycarbonate housing that provides superior structural integrity compared to standard plastic controllers. Its solid-state design, free of rotating parts, ensures long-term stability in mining and heavy manufacturing where 24\/7 operation is critical. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eN031 RS485\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodule is galvanically isolated, protecting the core CPU from high-voltage transients often encountered in industrial serial networks.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106697142635,"sku":"CX9020-N031-0002","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/cx9020-n031-0002-leunaum0gqs.png?v=1776244329","url":"https:\/\/www.plcprotech.com\/products\/cx9020-n031-0002-beckhoff-embedded-pc-basic-cpu-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}