{"product_id":"allen-bradley-1756-l55m12-controllogix-processor-module","title":"Allen-Bradley 1756-L55M12 ControlLogix Processor Module","description":"\u003ch4\u003eProduct Overview\u003c\/h4\u003e\n\u003cp\u003eThe Allen-Bradley \u003cstrong\u003e1756-L55M12\u003c\/strong\u003e is a high-performance processor module belonging to the industry-leading ControlLogix platform. This Logix5555 controller acts as the central brain for large-scale, complex automation systems, executing sophisticated control logic with exceptional speed and precision. It manages extensive I\/O networks and coordinates multi-axis motion control, making it indispensable for advanced manufacturing and process industries. We supply this product as 100% Brand New and in original packaging, guaranteeing genuine factory specifications for mission-critical system integrations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth align=\"left\"\u003eFeature\u003c\/th\u003e\n\u003cth align=\"left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eProcessor Module (Logix5555)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eUser Memory (RAM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e750 Kilobytes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eMaximum Digital I\/O\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e128,000 Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eMaximum Analog I\/O\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e4,000 Inputs \/ 2,000 Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eProgram Scan Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e0.08 milliseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eBackplane Current (5V DC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e1.23 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eBackplane Current (24V DC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e14 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e0 to 60°C (32 to 140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eRequired Battery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e1756-BA1 or 1756-BATM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eEngineering Advantages\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eScalable Architecture for Massive I\/O Control\u003c\/strong\u003e\u003cbr\u003eThe 1756-L55M12 delivers immense processing power to handle the largest automation architectures. With the ability to address up to 128,000 digital I\/O points and 6,000 analog channels, this processor seamlessly scales from single-machine control to entire plant-wide systems. Its 750KB of user memory accommodates highly complex ladder logic, structured text, and function block diagrams without compromising execution speed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Execution for Deterministic Control\u003c\/strong\u003e\u003cbr\u003eFeaturing a blazing-fast program scan time of just 0.08 milliseconds, this controller ensures deterministic performance for time-critical applications. It executes control loops, motion coordination, and safety logic with minimal latency. This speed is vital for high-speed packaging lines, synchronized assembly operations, and complex chemical process control where split-second timing directly impacts product quality and safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Chassis Integration and Redundancy\u003c\/strong\u003e\u003cbr\u003eYou can install the 1756-L55M12 in any slot of a ControlLogix chassis, providing complete layout flexibility. The processor communicates seamlessly over the backplane with other modules and supports multi-processor configurations within a single chassis. Furthermore, it supports redundant system architectures, allowing you to pair controllers for hot-swappable failover, which maximizes system uptime and protects against unplanned production stoppages.\u003c\/p\u003e\n\u003ch4\u003eFAQs\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much memory does this processor have for user logic?\u003c\/strong\u003e\u003cbr\u003eA: The 1756-L55M12 is equipped with 750 Kilobytes of RAM dedicated to user logic, tags, and application data. This capacity supports extensive and complex control programs required for large-scale automation projects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum number of I\/O points this controller can manage?\u003c\/strong\u003e\u003cbr\u003eA: This processor can address a maximum of 128,000 digital I\/O points. For analog signals, it supports up to 4,000 input channels and 2,000 output channels, providing massive scalability for distributed control systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this processor require a battery to maintain memory?\u003c\/strong\u003e\u003cbr\u003eA: Yes. To retain user programs, configuration data, and tag values during power loss, the 1756-L55M12 requires a compatible battery. You should use either the Allen-Bradley 1756-BA1 or the 1756-BATM battery module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How fast does the processor execute control logic?\u003c\/strong\u003e\u003cbr\u003eA: The 1756-L55M12 boasts a highly responsive program scan time of 0.08 milliseconds. This ensures rapid data processing and near-instantaneous reaction to field changes, which is essential for high-speed and precision automation tasks.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53468482568376,"sku":"1756-L55M12","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-L55M24_aac66d9f-5f27-4966-b405-f577f329efa9.jpg?v=1778835553","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1756-l55m12-controllogix-processor-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}