{"product_id":"reliance-57c404b-network-communication-module","title":"Reliance 57C404B Network Communication Module","description":"\u003cdiv\u003e\u003cp\u003eThe 57C404B Network Communications Module is the AutoMax network interface that links two or more AutoMax\/DCS 5000 racks to form a distributed control system. Built for Reliance Electric AutoMax controllers, this module transmits control commands and status data across the AutoMax network, enabling coordinated operation of multiple racks within a single automation architecture. In typical installations, the 57C404B sits in the network path to bridge communications between processors, I\/O racks, and remote nodes, supporting scalable expansion of a plant’s distributed control capability without replacing core CPUs. Key compatibility notes include: part number 57C404B; used with AutoMax\/DCS 5000 family systems; originally manufactured by Reliance Electric, with the AutoMax lineage continuing to appear in legacy Reliance catalogs. Common applications encompass multi-rack process control and batch manufacturing lines where centralized logic governs multiple rack-based subsystems, or where data exchange between racks is required for synchronized control and monitoring. The module provides the dedicated hardware foundation for inter-rack communications that underpin distributed control in legacy automation environments.\u003c\/p\u003e\u003c\/div\u003e","brand":"Reliance","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51708584165678,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_fcd4b633-7dfb-45cb-b852-abbfac637e36.jpg?v=1770246493","url":"https:\/\/plgautomation.com\/products\/reliance-57c404b-network-communication-module","provider":"PLG Automation ","version":"1.0","type":"link"}