{"product_id":"1756-l1m2-allen-bradley-controllogix-5550-processor-module-1mb-memory","title":"1756-L1M2 Allen-Bradley ControlLogix 5550 Processor Module 1MB Memory","description":"\u003ch3 class=\"\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe Allen-Bradley 1756-L1M2 is a foundational CPU module from the ControlLogix® 5550 controller series,\u003c\/span\u003e\u003cspan class=\"\"\u003e engineered to provide high-performance logic execution for industrial automation systems.\u003c\/span\u003e\u003cspan class=\"\"\u003e Equipped with 1 MB of volatile user memory,\u003c\/span\u003e\u003cspan class=\"\"\u003e this processor is designed for medium-scale applications requiring a multitasking operating environment without the need for onboard nonvolatile storage.\u003c\/span\u003e\u003cspan class=\"\"\u003e It functions as the central intelligence within a 1756 chassis,\u003c\/span\u003e\u003cspan class=\"\"\u003e coordinating complex operations across various I\/O modules and network interfaces.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eWhile categorized as a legacy component,\u003c\/span\u003e\u003cspan class=\"\"\u003e the 1756-L1M2 remains a critical asset for maintaining existing infrastructure.\u003c\/span\u003e\u003cspan class=\"\"\u003e It supports sophisticated control strategies including discrete,\u003c\/span\u003e\u003cspan class=\"\"\u003e process,\u003c\/span\u003e\u003cspan class=\"\"\u003e and motion control.\u003c\/span\u003e\u003cspan class=\"\"\u003e Its open-style architecture allows it to be installed in any slot of a ControlLogix chassis,\u003c\/span\u003e\u003cspan class=\"\"\u003e where it utilizes the high-speed Producer\/Consumer technology to share data with other controllers and I\/O devices efficiently.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"\"\u003eSystem Connectivity and Communication\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe 1756-L1M2 processor facilitates expansive system integration by bridging local and remote I\/O via standard industrial networks.\u003c\/span\u003e\u003cspan class=\"\"\u003e It is compatible with bridge modules for EtherNet\/IP,\u003c\/span\u003e\u003cspan class=\"\"\u003e ControlNet,\u003c\/span\u003e\u003cspan class=\"\"\u003e and DeviceNet,\u003c\/span\u003e\u003cspan class=\"\"\u003e as well as Universal Remote I\/O.\u003c\/span\u003e\u003cspan class=\"\"\u003e This networking versatility enables the controller to manage decentralized plant floor equipment while maintaining high-speed throughput.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eFor local configuration and programming,\u003c\/span\u003e\u003cspan class=\"\"\u003e the module features an RS-232 serial port compatible with 1756-CP3 or 1747-CP3 cables.\u003c\/span\u003e\u003cspan class=\"\"\u003e System data integrity is maintained during power cycles by the 1756-BA1 lithium battery,\u003c\/span\u003e\u003cspan class=\"\"\u003e which provides the necessary energy to retain the user program in the volatile RAM.\u003c\/span\u003e\u003cspan class=\"\"\u003e The module is also characterized by its robust electromagnetic compatibility,\u003c\/span\u003e\u003cspan class=\"\"\u003e featuring high immunity to RF interference and electrostatic discharge (ESD).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eManufacturer:\u003c\/strong\u003e\u003cspan class=\"\"\u003e Allen-Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eModel Number:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 1756-L1M2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eSeries:\u003c\/strong\u003e\u003cspan class=\"\"\u003e ControlLogix 5550\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eUser Memory:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 1 Megabyte (RAM)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eNonvolatile Memory:\u003c\/strong\u003e\u003cspan class=\"\"\u003e None\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eBackplane Current (5V DC):\u003c\/strong\u003e\u003cspan class=\"\"\u003e 1.\u003c\/span\u003e\u003cspan class=\"\"\u003e05 A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eBackplane Current (24V DC):\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0.\u003c\/span\u003e\u003cspan class=\"\"\u003e02 A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003ePower Dissipation:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 4.\u003c\/span\u003e\u003cspan class=\"\"\u003e8 Watts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eThermal Dissipation:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 16.\u003c\/span\u003e\u003cspan class=\"\"\u003e4 BTU\/hr\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0°C to 60°C (32°F to 140°F)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eRelative Humidity:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 5% to 95% (non-condensing)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eVibration Resistance:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 2 G @ 10–500 Hz\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eOperating Shock:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 30 G\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eReplacement Battery:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 1756-BA1\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eWeight:\u003c\/strong\u003e\u003cspan class=\"\"\u003e 0.\u003c\/span\u003e\u003cspan class=\"\"\u003e36 kg (0.\u003c\/span\u003e\u003cspan class=\"\"\u003e8 lbs)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003e\u003cstrong\u003eDimentions: \u003c\/strong\u003e14.5x14x14.5cm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eHardware Resilience and Protection\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Hardening:\u003c\/strong\u003e\u003cspan class=\"citation-1219 citation-end-1219\"\u003e\u003cspan\u003e \u003c\/span\u003eCapable of withstanding up to 50 G of non-operating shock, ensuring durability during shipping and handling in heavy industrial environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a 30V continuous isolation rating, type-tested at 500V AC for 60 seconds to protect logic circuitry from field-side transients.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-1218\"\u003e\u003c\/span\u003e\u003cstrong\u003eStatus Diagnostics:\u003c\/strong\u003e\u003cspan class=\"citation-1218 citation-end-1218\"\u003e\u003cspan\u003e \u003c\/span\u003eFront-panel LED indicators provide real-time feedback on controller health, battery status, and I\/O activity.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEmissions Compliance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMeets CISPR 11, Group 1, Class A standards for industrial radio-frequency emissions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45519107260589,"sku":"1756-L1M2","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley-1756-l1m2-controllogix-5550-controller-4e3jygq5m02.jpg?v=1766987219","url":"https:\/\/www.maxwellplc.com\/products\/1756-l1m2-allen-bradley-controllogix-5550-processor-module-1mb-memory","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}