{"product_id":"allen-bradley-1756-l1-logix-5550-processor-unit","title":"Allen-Bradley 1756-L1 Logix 5550 Processor Unit","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1756-L1 Logix 5550 Processor Unit is a high-end ControlLogix PAC CPU (Series A) built around the Logix5550 family and identified by part number 1756-L1. It provides 64 KB of user memory and serves as the central processor in a ControlLogix chassis, supporting extensive I\/O and multi-network connectivity. The module includes dual Ethernet interfaces for networked control and data exchange, plus RS-232-C serial (DF1 protocol) for legacy device links. It also offers flexible I\/O options through Local I\/O, ControlNet I\/O, DeviceNet I\/O, and DH+ networks, enabling diverse topologies from direct rack I\/O to remote I\/O configurations. In typical ControlLogix deployments, the 1756-L1 drives large digital I\/O applications and integrates with a range of fieldbuses while delivering robust performance for automation tasks in manufacturing, packaging, and process environments.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51657301262638,"sku":null,"price":203.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_7ddd2811-d633-4315-824f-bf7de7bd9632.jpg?v=1769525658","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-l1-logix-5550-processor-unit","provider":"PLG Automation ","version":"1.0","type":"link"}