{"product_id":"schneider-electric-140cpu21304c-cpu-module","title":"Schneider Electric 140CPU21304C CPU Module","description":"\u003ch2\u003eRugged and Capable Quantum Controller for Demanding Applications\u003c\/h2\u003e\n\u003cp\u003eDrive your industrial automation with the robust \u003cstrong style=\"color: #2e74b5;\"\u003eSchneider Electric 140CPU21304C\u003c\/strong\u003e CPU module from the Modicon Quantum series. Designed for reliability in challenging conditions, this controller features a protective conformal coating. With substantial memory and fast execution, it capably handles both local and distributed I\/O for complex control tasks.\u003c\/p\u003e\n\u003ch3\u003eCore Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eBrand \u0026amp; Manufacturer:\u003c\/strong\u003e Schneider Electric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eProduct Line \u0026amp; Model:\u003c\/strong\u003e Modicon Quantum \/ \u003cstrong\u003e140CPU21304C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eType:\u003c\/strong\u003e Central Processing Unit (CPU) Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eEnvironmental Protection:\u003c\/strong\u003e Conformal Coated for Harsh Environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eMounting:\u003c\/strong\u003e Rack-mounted in Quantum Chassis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eMemory:\u003c\/strong\u003e 768 KB RAM, 16 KB Program Memory\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eData Retention:\u003c\/strong\u003e Battery-backed RAM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eProcessing Speed:\u003c\/strong\u003e ~0.3 µs per Boolean Instruction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eI\/O Support:\u003c\/strong\u003e Local \u0026amp; Remote I\/O Configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 60°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommunication \u0026amp; System Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eSerial Port:\u003c\/strong\u003e 1 x RS-232 (Modbus Protocol)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eNetwork Port:\u003c\/strong\u003e 1 x Modbus Plus (MB+)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eInstruction Set:\u003c\/strong\u003e Includes Advanced Math Instructions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eSystem Monitoring:\u003c\/strong\u003e Integrated Watchdog Timer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eStatus Indicators:\u003c\/strong\u003e Four LEDs (RUN, ERR, I\/O, COMM)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eHarsh Environment Ready:\u003c\/strong\u003e The conformal coating protects against moisture, dust, and corrosive contaminants, ensuring longevity in tough plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eFast Control Execution:\u003c\/strong\u003e Sub-microsecond Boolean logic execution enables responsive control for high-speed processes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eSubstantial Memory Capacity:\u003c\/strong\u003e 768KB of RAM supports complex data handling and large I\/O configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eCommunication Flexibility:\u003c\/strong\u003e Built-in RS-232 (Modbus) and Modbus Plus ports provide easy integration into a wide range of industrial networks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eExpanded I\/O Architecture:\u003c\/strong\u003e Support for remote I\/O allows for distributed control systems, reducing wiring costs over large areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #2e74b5;\"\u003eHigh Reliability:\u003c\/strong\u003e Battery-backed RAM retains critical data during power loss, and the watchdog timer monitors for system faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIntegration and Application Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module in a Quantum series rack for use as the primary system controller.\u003c\/li\u003e\n\u003cli\u003eUse the Modbus Plus port for high-speed peer-to-peer communication or connection to a Quantum network.\u003c\/li\u003e\n\u003cli\u003eUtilize the RS-232 port for programming, connecting to HMI panels, or interfacing with Modbus RTU devices.\u003c\/li\u003e\n\u003cli\u003eLeverage the support for advanced math instructions for process control, PID loops, and data calculations.\u003c\/li\u003e\n\u003cli\u003eMonitor the four status LEDs (RUN, ERR, I\/O, COMM) for instant visual diagnostics of CPU and network state.\u003c\/li\u003e\n\u003cli\u003eEnsure operating ambient temperatures remain within the 0°C to 60°C range for specified performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the benefit of the conformal coating?\u003c\/strong\u003e\u003cbr\u003eThe coating on the \u003cstrong\u003e140CPU21304C\u003c\/strong\u003e provides a protective barrier, making it suitable for environments with high humidity, condensation, or airborne chemical contaminants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat type of battery is required for the RAM backup?\u003c\/strong\u003e\u003cbr\u003eA standard lithium battery (commonly part of the Quantum system kit) is used to maintain the battery-backed RAM when system power is off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan this CPU communicate over Ethernet?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003e140CPU21304C\u003c\/strong\u003e has RS-232 and Modbus Plus ports natively. For Ethernet connectivity, a separate Quantum Ethernet communication module (e.g., NOE) is required in the rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat does \"support for remote I\/O\" mean?\u003c\/strong\u003e\u003cbr\u003eIt means the CPU can control I\/O modules that are not in the local rack, using remote drop adapters and networks like Modbus Plus or Ethernet, extending control over long distances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow is the program developed and loaded?\u003c\/strong\u003e\u003cbr\u003eProgramming is done on a PC using Schneider Electric's Unity Pro software, then downloaded to the CPU via the RS-232 or network connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the purpose of the watchdog timer?\u003c\/strong\u003e\u003cbr\u003eThe watchdog is a self-monitoring circuit. The software must regularly \"reset\" it. If it is not reset (due to a program fault), the CPU will halt, preventing unpredictable machine behavior.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e© 2026 NexAuto Technology Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003cstrong\u003e\u003ca style=\"color: #ff6b35; text-decoration: underline;\" href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003c\/strong\u003e\u003cbr\u003eContact: \u003cstrong\u003e\u003ca style=\"color: #ff6b35; text-decoration: underline;\" href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003c\/strong\u003e | Phone: \u003cstrong\u003e\u003ca style=\"color: #ff6b35; text-decoration: underline;\" href=\"https:\/\/wa.me\/8615392429628\" target=\"_blank\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePartner: \u003cstrong\u003e\u003ca style=\"color: #ff6b35; text-decoration: underline;\" href=\"https:\/\/www.autonexcontrol.com\/\" target=\"_blank\"\u003eAutoNex Controls Limited\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Schneider","offers":[{"title":"Default Title","offer_id":47226110673154,"sku":"140CPU21304C","price":264.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/140CPU21304C.jpg?v=1768534873","url":"https:\/\/www.nex-auto.com\/products\/schneider-electric-140cpu21304c-cpu-module","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}