{"product_id":"allen-bradley-1747-l551-cpu-module-for-slc-500-plc","title":"Allen-Bradley 1747-L551 CPU Module for SLC 500 PLC","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1747-L551 SLC 500 CPU Module is a PLC CPU processor for SLC 500 (SLC 5\/05) systems. Designed for chassis-mounted installation in an SLC 500 rack, it executes control logic, manages I\/O, and provides Ethernet Channel 1 and RS-232 Channel 0 communication between field devices and networks. Key specs include 16K words of user memory, up to 4096 inputs and 4096 outputs, up to 480 analog I\/O points, and as many as 32 simultaneous connections, with a scan time of approximately 0.9 ms per Kword and battery-backed RAM for memory backup. Part numbers listed are 1747-L551 \/ 1747-OS501, and common replacements include 1747-L552, 1747-L553, and 1769-L32E; the module is discontinued, though support and repair options remain available for industrial automation control and communication.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51657381544238,"sku":null,"price":1092.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/1747-L551_555b2b66-ab26-441d-ac24-7727e74a302a.webp?v=1774588753","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-l551-cpu-module-for-slc-500-plc","provider":"PLG Automation ","version":"1.0","type":"link"}