{"product_id":"allen-bradley-1756-l74-controllogix-pac-controller","title":"Allen-Bradley 1756-L74 ControlLogix PAC Controller","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-L74\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance programmable automation controller from the Allen-Bradley ControlLogix 5570 platform. Designed for large-scale industrial control applications, this PAC combines advanced processing capability, integrated motion support, and extensive communication flexibility within a modular ControlLogix architecture.\u003c\/p\u003e\n\u003cp\u003eThe controller provides substantial user memory capacity and supports large I\/O system integration, making it suitable for complex manufacturing, process automation, and high-speed machine control environments. It also includes removable non-volatile storage for project backup and firmware management.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePart of the Allen-Bradley ControlLogix 5570 controller family\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e16 MB user application memory\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0.98 MB dedicated I\/O memory\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eShips with 1 GB Secure Digital non-volatile memory card\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated USB communication interface\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports large distributed I\/O systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFour-character alphanumeric status display\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-speed deterministic control performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with Studio 5000 Logix Designer environment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModular rack-based ControlLogix installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eControlLogix 5570\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eProgrammable Automation Controller (PAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1756-L74\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Memory\u003c\/td\u003e\n\u003ctd\u003e0.98 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-Volatile Storage\u003c\/td\u003e\n\u003ctd\u003e1 GB Secure Digital Card (1784-SD1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Port\u003c\/td\u003e\n\u003ctd\u003e1 USB Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Discrete I\/O\u003c\/td\u003e\n\u003ctd\u003eUp to 128,000 Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Analog I\/O\u003c\/td\u003e\n\u003ctd\u003eUp to 4,000 Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Connections\u003c\/td\u003e\n\u003ctd\u003e500 Connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003e4-Character Alphanumeric Display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current @ 1.2V DC\u003c\/td\u003e\n\u003ctd\u003e5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current @ 5.1V DC\u003c\/td\u003e\n\u003ctd\u003e800 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Platform\u003c\/td\u003e\n\u003ctd\u003eControlLogix Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Software\u003c\/td\u003e\n\u003ctd\u003eStudio 5000 \/ RSLogix 5000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance and System Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-L74\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtroller is optimized for centralized and distributed automation systems requiring high-speed processing and extensive communication capability. It supports coordinated control across I\/O, drives, HMIs, safety systems, and industrial networks through the ControlLogix platform.\u003c\/p\u003e\n\u003cp\u003eThe included SD memory card enables firmware storage, project backup, and recovery functions, helping reduce commissioning time and simplifying maintenance procedures.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis controller is commonly deployed in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eAutomotive manufacturing lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePackaging and converting systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaterial handling automation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProcess control applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower generation systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater and wastewater treatment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOil and gas facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-speed production machinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe controller is compatible with ControlLogix chassis systems and supports integration with various Allen-Bradley communication modules including:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEtherNet\/IP\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eControlNet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDeviceNet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRemote I\/O\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSerial communication modules\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt also supports distributed FLEX I\/O, POINT I\/O, and other Logix-based architectures.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat programming software is used with the 1756-L74?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe controller is programmed using Studio 5000 Logix Designer, previously known as RSLogix 5000.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDoes the controller include non-volatile memory?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-L74\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eincludes a 1 GB 1784-SD1 Secure Digital memory card for backup and storage functions.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eHow many I\/O points can this controller support?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe controller supports up to 128,000 discrete I\/O points and approximately 4,000 analog I\/O points depending on system architecture.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCan the controller communicate through USB?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. A built-in USB port is included for local programming, diagnostics, and maintenance access.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43334223396954,"sku":"1756-L74","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-L742.jpg?v=1778230913","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-l74-controllogix-pac-controller","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}