{"product_id":"foxboro-0303393-optonet-node-board","title":"Foxboro 0303393 Optonet Node Board","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFoxboro 0303393\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(often associated with part number\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0303429\u003c\/strong\u003e) is an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eOptoNet Node Board\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eused primarily in the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFoxboro I\/A Series\u003c\/strong\u003e, specifically within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRTU50 (Remote Terminal Unit)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSCD6000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esystem architectures.\u003c\/p\u003e\n\u003ch2\u003eKey Functions \u0026amp; Architecture\u003c\/h2\u003e\n\u003cp\u003eThe OptoNet Node Board functions as a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-speed communication gateway\u003c\/strong\u003e. It is essentially a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethree-port network hub\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat uses the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eARCNET (Attached Resource Computer Network)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprotocol to manage deterministic data flow between system nodes.\u003c\/p\u003e\n\u003ch3\u003e1. Networking Topology\u003c\/h3\u003e\n\u003cp\u003eSupports a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edeterministic, token-passing ring network\u003c\/strong\u003e, ensuring predictable communication timing—critical for real-time industrial control systems.\u003c\/p\u003e\n\u003ch3\u003e2. Fault Tolerance\u003c\/h3\u003e\n\u003cp\u003eTypically supports a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edual-ring configuration\u003c\/strong\u003e. If one fiber optic cable or port fails, the network automatically re-routes traffic in the opposite direction, ensuring uninterrupted communication through\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edual-redundant paths\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e3. Electrical Isolation\u003c\/h3\u003e\n\u003cp\u003eBy using\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efiber optic communication\u003c\/strong\u003e, the board provides complete electrical isolation between nodes, protecting the system from:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eLightning surges\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGround loops\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eElectromagnetic interference (EMI)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0303393 (Board) \/ 0303429 (Assembly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNetwork Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eARCNET (Deterministic Token-Passing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Medium\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMulti-mode glass optical fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Nodes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 63 nodes per network\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 500 m between nodes (approx. 6 km total ring length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eST connectors (Tx and Rx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOn-board LEDs for Link, Activity, and Run\/Fail status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":44247572185203,"sku":"0303393","price":269.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/tlb_2.jpg?v=1769131065","url":"https:\/\/www.dcssupplier.com\/products\/foxboro-0303393-optonet-node-board","provider":"DcsSupplier Limited","version":"1.0","type":"link"}