{"product_id":"allen-bradley-1747-bsn-slc-500-backup-scanner-hot-standby-module","title":"Allen-Bradley 1747-BSN SLC 500 Backup Scanner Hot Standby Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1747-BSN is a Backup Scanner Module that provides hot-standby redundancy for SLC 500 systems (5\/02 and higher). It supports backup of Remote I\/O (RIO) or Data Highway Plus (DH+) networks and includes a high-speed serial link for data synchronization between primary and secondary processors.\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFunction: Hot-standby \/ backup scanner\u003c\/li\u003e\n\u003cli\u003eSupported networks: RIO or DH+ (switchable)\u003c\/li\u003e\n\u003cli\u003eAdditional channel: RS-232\/485 switchover for operator interfaces\u003c\/li\u003e\n\u003cli\u003eLink: High-Speed Serial Link (HSSL) for primary-to-secondary data transfer\u003c\/li\u003e\n\u003cli\u003eCompatible processors: SLC 5\/02 and later\u003c\/li\u003e\n\u003cli\u003eMax logical racks: Up to 4 on the RIO link\u003c\/li\u003e\n\u003cli\u003eSystem: One module in primary chassis + complementary module in secondary chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose This\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnables processor and network redundancy\u003c\/li\u003e\n\u003cli\u003eSeamless switchover on primary failure\u003c\/li\u003e\n\u003cli\u003eSupports both RIO and DH+ backup\u003c\/li\u003e\n\u003cli\u003eHigh-speed data synchronization between systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat does it backup?\u003c\/strong\u003e RIO or DH+ networks plus processor control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many modules?\u003c\/strong\u003e Complementary pair (primary + secondary).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcessors?\u003c\/strong\u003e SLC 5\/02 or higher.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMounting Steps\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInstall one 1747-BSN in the primary chassis and one in the secondary chassis.\u003c\/li\u003e\n\u003cli\u003eConnect the High-Speed Serial Link between the two modules.\u003c\/li\u003e\n\u003cli\u003eConfigure switches for baud rate, address and network type (RIO\/DH+).\u003c\/li\u003e\n\u003cli\u003eConnect RIO or DH+ media and optional operator interface cable.\u003c\/li\u003e\n\u003cli\u003ePower up both systems and verify primary\/secondary status and failover.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eBuying Advice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRequired in pairs for a complete backup system.\u003c\/li\u003e\n\u003cli\u003eConfirm switch settings match the network speed and addressing.\u003c\/li\u003e\n\u003cli\u003eEssential for high-availability SLC 500 Remote I\/O or DH+ applications.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50167201562762,"sku":"1747-BSN","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/2818\/2154\/files\/1747-BSN_2_529a4885-936d-44f0-88f0-fa36cd9e65bb.png?v=1788944735","url":"https:\/\/www.cambiaplc.com\/products\/allen-bradley-1747-bsn-slc-500-backup-scanner-hot-standby-module","provider":"Controlix Automation","version":"1.0","type":"link"}