{"product_id":"allen-bradley-1785-l40b-plc-5-40-controller-processor","title":"Allen-Bradley 1785-L40B PLC-5\/40 Controller Processor","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1785-L40B is a high-performance PLC-5\/40 programmable controller processor designed to execute complex control algorithms and manage extensive I\/O architectures within the PLC-5 chassis environment. This processor is engineered for medium-to-large-scale industrial automation applications requiring robust processing power, deterministic scan times, and versatile communication routing across legacy network infrastructures.\u003c\/p\u003e\n\u003cp\u003eThe controller mounts directly into a standard PLC-5 backplane slot and integrates battery-backed static RAM for user program storage, supplemented by an EEPROM program backup option. It features embedded DH+ and Universal Remote I\/O interfaces, allowing seamless data exchange, multi-rack expansion up to 61 total I\/O chassis, and multi-tier network integration for distributed factory floor automation.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cdiv\u003eSupports up to 2,048 total digital inputs and 2,048 digital outputs, or a complementary mix\u003c\/div\u003e\n  \u003cdiv\u003eAccommodates up to 2,048 maximum analog I\/O points\u003c\/div\u003e\n  \u003cdiv\u003eEquipped with 4 built-in Data Highway Plus (DH+) and Universal Remote I\/O communication ports\u003c\/div\u003e\n  \u003cdiv\u003eConfigurable RS-232, RS-423, and RS-422A serial communication channel for point-to-point interface\u003c\/div\u003e\n  \u003cdiv\u003eBackplane current draw of 3.3A at 5VDC with a total power dissipation of 17.3W\u003c\/div\u003e\n  \u003cdiv\u003eOperating temperature range of -40 to 85 Celsius (-40 to 185 Fahrenheit)\u003c\/div\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cdiv\u003eLarge-scale discrete manufacturing and sequential logic control loops\u003c\/div\u003e\n  \u003cdiv\u003eDistributed rack system management via Universal Remote I\/O links\u003c\/div\u003e\n  \u003cdiv\u003eLegacy Data Highway Plus (DH+) network supervisory communication\u003c\/div\u003e\n  \u003cdiv\u003eProcess control and analog data acquisition in continuous industrial plants\u003c\/div\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 Type\u003c\/td\u003e\n      \u003ctd\u003ePLC-5 Controller Processor\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCatalog Number\u003c\/td\u003e\n      \u003ctd\u003e1785-L40B\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSeries\u003c\/td\u003e\n      \u003ctd\u003ePLC-5 \/ PLC-5\/40\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMemory Type\u003c\/td\u003e\n      \u003ctd\u003eBattery-backed static RAM\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaximum Digital I\/O Capacity\u003c\/td\u003e\n      \u003ctd\u003e2,048 inputs \/ 2,048 outputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaximum Analog I\/O Capacity\u003c\/td\u003e\n      \u003ctd\u003e2,048 analog I\/O\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCommunication Ports\u003c\/td\u003e\n      \u003ctd\u003e4 DH+ \/ Remote I\/O channels, 1 configurable serial port (RS-232\/423\/422A)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Load\u003c\/td\u003e\n      \u003ctd\u003e3.3A at 5VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Dissipation\u003c\/td\u003e\n      \u003ctd\u003e17.3W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e-40 to 85 Celsius (-40 to 185 Fahrenheit)\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  \u003cdiv\u003eUL Listed Industrial Control Equipment\u003c\/div\u003e\n  \u003cdiv\u003eCE compliant for applicable directives\u003c\/div\u003e\n  \u003cdiv\u003eC-Tick mark certified\u003c\/div\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770312352107,"sku":"1785-L40B","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1785-L40B_1200x1200_dc611114-2e9e-4446-b16b-875616007b09.jpg?v=1787741091","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1785-l40b-plc-5-40-controller-processor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}