{"product_id":"allen-bradley-1747oc-eeeaa-slc-500-open-controller-cpu","title":"Allen-Bradley 1747OC-EEEAA SLC 500 Open Controller CPU","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1747OC-EEEAA is the SLC 500 Open Controller CPU module—a PC-based controller designed to run your application alongside AB's 1746 I\/O in SLC 500 systems. The architecture comprises two CPUs, a SCANNER that handles the 1746 Local I\/O bus and a CONTROLLER that executes your program, linked by a shared dual-port memory bridge that forms an 8K-byte partition between the two processors. The CONTROLLER employs a PC-class CPU (historically a 266 MHz Pentium-class or 5x86-class processor) and connects to the backplane via PCI (1747-OCF) or ISA (1747-OCE) bus interfaces, depending on the exact module revision. This Open Controller design enables PC-programming capabilities within a modular AB control system and leverages BIOS and OS-level software to load and run applications on the PCI\/ISA bus alongside traditional 1746 I\/O.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658954604846,"sku":null,"price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_5c62ce65-f2f9-48e8-818b-2aef88120935.jpg?v=1769525911","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747oc-eeeaa-slc-500-open-controller-cpu","provider":"PLG Automation ","version":"1.0","type":"link"}