{"product_id":"allen-bradley-1747-l404-slc-500-processor-module","title":"Allen-Bradley 1747-L404 SLC 500 Processor Module","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1747-L404 UNMP is a SLC 500 processor module that functions as the central processing unit for Allen-Bradley SLC 500 modular controllers. It is designed for installation in standard 1746 backplane chassis, where it runs user programs stored in the controller and manages data flow between I\/O modules and field devices. As part of the 1747-Lxxx SLC 500 processor family, the module provides the core runtime environment for ladder logic programs, diagnostics, and basic communications within the chassis, enabling reliable local control for a range of automation tasks. Typical applications include compact machine control, packaging lines, conveyors, and small process loops where a dedicated PLC CPU is required in a compact footprint. For best results, ensure compatibility with your existing 1746-series hardware, confirm power requirements and backplane fit, and reference the official Rockwell Automation documentation for any model-specific notes, including supported I\/O configurations and firmware compatibility.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658961355054,"sku":null,"price":2610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_54fb2e2a-7b29-4403-9abe-954f275e034b.jpg?v=1769526018","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-l404-slc-500-processor-module","provider":"PLG Automation ","version":"1.0","type":"link"}