{"product_id":"allen-bradley-1747-asb-remote-i-o-adapter-module","title":"Allen-Bradley 1747-ASB Remote I\/O Adapter Module","description":"\u003ch1\u003eAllen-Bradley 1747-ASB Remote I\/O Adapter Module\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1747-ASB\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1747-ASB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRemote I\/O Adapter Module, operates as a dedicated hardware component for remote I\/O link arbitration and chassis-level device coordination within SLC 500 RIO network structures.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe 1747-ASB designation is a single-field catalog number with no defined functional suffix segmentation. All operational behaviors are embedded within the base module firmware and chassis configuration.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1747-ASB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane: 375 mA @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRemote I\/O Adapter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Slot\u003c\/td\u003e\n\u003ctd\u003eSlot 0, 1746 remote chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Rate\u003c\/td\u003e\n\u003ctd\u003e57.6 \/ 115 \/ 230 kbit\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Interface\u003c\/td\u003e\n\u003ctd\u003eSLC 500 RIO backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003eCOMM \/ FAULT LED included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRemote I\/O Arbitration and Bus Role Execution\u003c\/h3\u003e\n\u003cp\u003eThe module implements SLC 500 Remote I\/O (RIO) protocol handling with cyclic scan-based data exchange between master scanner and remote chassis. Slot 0 positioning defines backplane arbitration priority and establishes chassis identity on the RIO segment. The adapter manages dual-role operation, allowing both slave-side I\/O mapping and master-side chassis coordination depending on system topology. Communication timing is synchronized to selectable baud rates (57.6, 115, 230 kbit\/s), affecting scan window allocation and update latency across the RIO link.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1747-ASB require user-level programming for operation?\u003cbr\u003eA: No. The module operates through hardware configuration and DIP switch settings; no application-level programming is required.\u003c\/p\u003e\n\u003cp\u003eQ: Can the module function in both master and slave configurations simultaneously?\u003cbr\u003eA: Yes. The architecture supports dual-mode operation depending on chassis role and RIO network topology definition.\u003c\/p\u003e\n\u003cp\u003eQ: What is the impact of backplane current draw on chassis sizing?\u003cbr\u003eA: The module consumes 375 mA at 5 VDC from the backplane, which must be included in total chassis power budget calculation to prevent slot undervoltage conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eInstall the module exclusively in Slot 0 of a compatible 1746 remote chassis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify RIO network baud rate selection before power application.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain proper grounding of chassis to reduce communication reference drift on long RIO segments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse shielded twisted pair cable for RIO communication trunk wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure DIP switch configuration matches master scanner addressing scheme prior to commissioning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvoid routing RIO cables parallel to high-noise switching conductors or motor drive lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43537850499162,"sku":"1747-ASB","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1747-ASB2.jpg?v=1782205009","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1747-asb-remote-i-o-adapter-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}