{"product_id":"allen-bradley-1747-l551-slc-500-plc-cpu-module","title":"Allen-Bradley 1747-L551 SLC 500 PLC CPU Module","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1747-L551 SLC 500 PLC CPU Module is a SLC 5\/05 processor for the Allen-Bradley SLC 500 family, designed to control mid‑size automation tasks within a 1747 modular chassis. It provides 16,000 words of user memory, supports up to 3 local I\/O chassis and 30 I\/O slots, and handles up to 4,096 discrete inputs and 4,096 discrete outputs with up to 480 analog I\/O points. It includes Ethernet and RS‑232 communications (DH‑485, DF1, or ASCII) and uses Flash EPROM for backup memory, with a program scan time of about 0.9 ms. This CPU is discontinued by Rockwell Automation as of December 31, 2021, though remains available from some third‑party distributors. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51657303556398,"sku":null,"price":164.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_d07073c7-802f-4844-b420-8bf9b49cda14.jpg?v=1769467711","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-l551-slc-500-plc-cpu-module","provider":"PLG Automation ","version":"1.0","type":"link"}