{"product_id":"1756-l55m13-controllogix-controller-cpu-module-allen-bradley","title":"1756-L55M13 ControlLogix Controller CPU Module | Allen-Bradley","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1756-L55M13 serves as a high-integrity central processing unit (CPU) within the ControlLogix industrial automation platform. This hardware controller executes complex multi-tasking control programs, manages intensive floating-point math routines, and synchronizes distributed digital and analog I\/O data tables across large-scale plant processing networks. We supply this mission-critical processor module exclusively in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new, original factory condition\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto ensure unblemished firmware stability, eliminate backplane data dropouts, and provide zero runtime hours out of the box.\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\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRockwell Automation \/ Allen-Bradley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756-L55M13\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eControlLogix Platform\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCentral Processing Unit (CPU) Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUser Memory Capacity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.5 MB Available Memory\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eI\/O Memory Allocation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e208 KB Dedicated I\/O Storage\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSerial Communication Interfacing\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 x Channel 0 RS-232 (9-pin D-shell) Communication Port\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Backplane Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC Nominal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current Load\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e14 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePrimary Classification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePLCs \/ Machine Control \/ PLC Rack Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNet Hardware Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.79 lbs (0.36 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimizes Execution Speeds via Segmented Memory:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe hardware splits internal memory allocation into 1.5 MB for data\/logic code and 208 KB strictly for I\/O mapping arrays. This dedicated architecture ensures the CPU handles communication background loops without delaying high-frequency rung execution or critical process interrupts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintains Legacy Field Serial Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAn integrated RS-232 communication port allows the CPU to interface directly with older field hardware, barcode scanners, and local weight indicators. This onboard port eliminates the cost of auxiliary serial interface cards when integrating legacy sub-networks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLowers Thermal Footprint inside Enclosures:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe processing unit draws a mere 14 mA from the 24V DC backplane power rail. This minimal current draw decreases ambient heat generation inside completely sealed, unventilated electrical panels, protecting adjacent high-density I\/O cards from thermal stress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplifies Direct Backplane Slot Insertion:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe compact 0.79 lbs module fits seamlessly into any standard 1756 ControlLogix chassis slot. Two plastic guides align the multi-pin connector arrays smoothly into the chassis backplane socket, enabling fast drop-in field replacements during plant maintenance intervals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this 1756-L55M13 processor require a non-volatile memory expansion card to run?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe processor contains 1.5 MB of integrated volatile user memory which handles your active runtime program. However, we highly recommend installing a compatible Allen-Bradley non-volatile CompactFlash card to back up code parameters, preventing application logic loss during total facility power blackouts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this CPU module an authentic, factory-fresh unit or a refurbished surplus part?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee this product is a 100% brand new, authentic factory-original Allen-Bradley processor. It arrives sealed inside its native protective manufacturer packaging with all quality control seals, product serial codes, and tracking barcodes completely intact.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat vital precautions prevent processor corruption during installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlways switch off all incoming power feeds to the 1756 chassis before sliding the module into place. Put on a verified, grounded electrostatic discharge (ESD) wrist strap, keep your fingers clear of the rear gold-plated connector pins, and push the module firmly into the slot until the top and bottom chassis latches lock securely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53478575767736,"sku":"1756-L55M13","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-L55M24_2a3a1ec5-54c1-4c7c-af95-e22551e17d83.jpg?v=1779096710","url":"https:\/\/www.globalpetroparts.com\/products\/1756-l55m13-controllogix-controller-cpu-module-allen-bradley","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}