{"product_id":"allen-bradley-1785-lt-plc-5-10-programmable-controller-processor","title":"Allen-Bradley 1785-LT PLC-5\/10 Programmable Controller Processor","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1785-LT PLC-5\/10 is a high-performance programmable logic controller processor designed for demanding industrial automation and discrete manufacturing environments. Serving as the central processing unit for the classic PLC-5 architecture, the 1785-LT executes complex ladder logic instructions, manages high-speed interlocking, and coordinates extensive input and output data across local and remote chassis networks.\u003c\/p\u003e\n\u003cp\u003eThis controller features onboard battery-backed SRAM for user program storage and executes control routines with deterministic scan times. It integrates native communication interfaces including Data Highway Plus (DH+) for peer-to-peer messaging and programming, alongside a Remote I\/O (RIO) adapter\/scanner port for distributed chassis architectures. The processor mounts directly into standard 1771 I\/O chassis backplanes, occupying a single slot while managing multi-rack configurations.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCentral processing unit for Allen-Bradley PLC-5 control systems operating on standard 1771 backplanes\u003c\/li\u003e\n  \u003cli\u003eSupports multi-rack configurations up to four local racks including the resident chassis\u003c\/li\u003e\n  \u003cli\u003e6 kilowords standard user memory in SRAM, expandable up to 14 kilowords\u003c\/li\u003e\n  \u003cli\u003eIntegrated Data Highway Plus (DH+) communication port for programming, networking, and HMI connectivity\u003c\/li\u003e\n  \u003cli\u003eBuilt-in Remote I\/O (RIO) channel capable of supporting distributed adapter racks and remote devices\u003c\/li\u003e\n  \u003cli\u003eConfigurable RS-232-C \/ RS-422-A \/ RS-423-A serial port for peripheral connection, ASCII data transfer, or modem communication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCentralized discrete manufacturing and assembly line control automation\u003c\/li\u003e\n  \u003cli\u003eLarge-scale continuous process and batch control coordination\u003c\/li\u003e\n  \u003cli\u003eDistributed multi-rack I\/O management in industrial plant floors\u003c\/li\u003e\n  \u003cli\u003eLegacy migration and brownfield control system expansion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\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 \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Line\u003c\/td\u003e\n      \u003ctd\u003ePLC-5\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCatalog Number\u003c\/td\u003e\n      \u003ctd\u003e1785-LT\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProcessor Type\u003c\/td\u003e\n      \u003ctd\u003eProgrammable Logic Controller (PLC) Processor\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eUser Memory Size\u003c\/td\u003e\n      \u003ctd\u003e6 kilowords SRAM (expandable to 14 kilowords)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCommunication Ports\u003c\/td\u003e\n      \u003ctd\u003e1 x Data Highway Plus (DH+), 1 x Remote I\/O (RIO), 1 x Serial (RS-232-C\/422-A\/423-A)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLocal Rack Capacity\u003c\/td\u003e\n      \u003ctd\u003eUp to 4 local racks (including resident rack)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaximum Total I\/O\u003c\/td\u003e\n      \u003ctd\u003e3072 inputs and 3072 outputs (complementary) or 3072 any mix\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eChassis Compatibility\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley 1771 Universal I\/O Chassis\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n      \u003ctd\u003e2.5 A at 5 VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e0 to 60 degC (32 to 140 degF)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEnclosure Type\u003c\/td\u003e\n      \u003ctd\u003eOpen-style industrial module\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n      \u003ctd\u003eUnited States\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUL Listed Industrial Control Equipment\u003c\/li\u003e\n  \u003cli\u003eCSA Certified\u003c\/li\u003e\n  \u003cli\u003eCE Compliant for applicable European directives\u003c\/li\u003e\n  \u003cli\u003ecUL-us Listed\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770299900267,"sku":"1785-LT","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1785-LT_1200x1200_0d03b323-5cc1-43a7-af6c-c29125a042ad.jpg?v=1787740636","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1785-lt-plc-5-10-programmable-controller-processor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}