{"product_id":"allen-bradley-1747-sn-slc-500-remote-io-scanner-module","title":"Allen-Bradley 1747-SN SLC 500 Remote I\/O Scanner Module","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAllen-Bradley 1747-SN\u003c\/strong\u003e is a Remote I\/O (RIO) scanner module for the SLC 500 control platform. Installed in a local 1746 chassis, it acts as the master of an Allen-Bradley RIO link, exchanging discrete I\/O and, where supported, block-transfer data with remote adapters and compatible devices. An SLC 5\/02 or later processor is required.\u003c\/p\u003e\n\u003cp\u003eThe scanner supports a maximum of four logical RIO racks, corresponding to 32 input and 32 output image words. Series B and later units can perform block transfers of up to 64 words per remote device when the application and adapter are configured for that function.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCatalog Number\u003c\/th\u003e\n\u003ctd\u003e1747-SN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Family\u003c\/th\u003e\n\u003ctd\u003eSLC 500, 1747 communication modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eRemote I\/O Scanner Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eController Requirement\u003c\/th\u003e\n\u003ctd\u003eSLC 5\/02 or later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork Role\u003c\/th\u003e\n\u003ctd\u003eRIO master (scanner); remote devices operate as adapters\/slaves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiscrete Image Capacity\u003c\/th\u003e\n\u003ctd\u003eFour logical racks; 32 input and 32 output image words\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBlock Transfer\u003c\/th\u003e\n\u003ctd\u003eUp to 64 words per remote device, Series B or later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRIO Link Rates\u003c\/th\u003e\n\u003ctd\u003e57.6, 115.2 and 230.4 kbaud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum RIO Cable Length (Belden 9463)\u003c\/th\u003e\n\u003ctd\u003e3,048 m at 57.6 kbaud; 1,524 m at 115.2 kbaud; 762 m at 230.4 kbaud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRIO Connector\u003c\/th\u003e\n\u003ctd\u003e3-pin scanner connector; Rockwell replacement connector 1746-RT29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBackplane Current Requirement\u003c\/th\u003e\n\u003ctd\u003e600 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e0 to 60°C (32 to 140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Temperature\u003c\/th\u003e\n\u003ctd\u003e-40 to 85°C (-40 to 185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRelative Humidity\u003c\/th\u003e\n\u003ctd\u003e5–95%, noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNoise Immunity\u003c\/th\u003e\n\u003ctd\u003eNEMA ICS 2-230 (per Rockwell installation literature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHistorical Agency Markings\u003c\/th\u003e\n\u003ctd\u003eUL\/C-UL, CE, C-Tick; Class I, Division 2 ratings in Rockwell installation literature. Confirm the markings on the individual unit.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eVaries by manufacturing batch; verify unit label. Current Rockwell catalog lists Singapore.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLifecycle Status\u003c\/th\u003e\n\u003ctd\u003eDiscontinued by Rockwell Automation, effective March 31, 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eRIO Link and Configuration\u003c\/h3\u003e\n\u003cp\u003eThe RIO link uses daisy-chained twisted-pair cabling. All participating devices must operate at the same baud rate. The physical cable ends require termination appropriate to the link speed and extended-node setting; shielding is grounded at the scanner end as specified in the installation instructions.\u003c\/p\u003e\n\u003cp\u003eThe scanner image and logical rack\/group assignments must match the SLC program and the remote adapter configuration. A 1747-SN scanner and a \u003ca href=\"https:\/\/www.plcprotech.com\/products\/allen-bradley-1747-asb-slc-500-remote-i-o-adapter-module\"\u003e1747-ASB Remote I\/O adapter\u003c\/a\u003e serve different roles; they are not substitutes.\u003c\/p\u003e\n\u003ch3\u003eReplacement and Ordering Checks\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the exact \u003cstrong\u003e1747-SN\u003c\/strong\u003e catalog number, hardware series and front-label details.\u003c\/li\u003e\n\u003cli\u003eRecord the existing DIP-switch baud setting and verify that every RIO device uses that rate.\u003c\/li\u003e\n\u003cli\u003eBack up the SLC program and scanner configuration, including G-file logical rack mapping and any block-transfer operations.\u003c\/li\u003e\n\u003cli\u003eCheck that the chassis power supply has at least 600 mA of available 5 VDC backplane capacity for this module.\u003c\/li\u003e\n\u003cli\u003eInspect the RIO cable, 3-pin connector, both end terminations and the scanner-end shield ground before attributing link faults to the scanner.\u003c\/li\u003e\n\u003cli\u003eRecord the COMM and FAULT LED indications with the system running before ordering a replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRockwell lists an engineering migration path rather than a confirmed plug-in replacement. Any platform migration must be assessed separately from an in-place 1747-SN module change.\u003c\/p\u003e\n\u003ch3\u003eTechnical References\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.rockwellautomation.com\/en-us\/products\/details.1747-SN.html\"\u003eRockwell Automation 1747-SN product and lifecycle information\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/literature.rockwellautomation.com\/idc\/groups\/literature\/documents\/in\/1747-in060_-en-p.pdf\"\u003eRockwell 1747-IN060 installation instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.rockwellautomation.com\/en-ca\/products\/hardware\/i-o\/1746-slc-i-o.html\"\u003eRockwell SLC I\/O manuals and literature index\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770310451563,"sku":"1747-SN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1747-SN_1200x1200_2163408c-3814-4d87-bc29-7c801af5a7b8.jpg?v=1787741001","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1747-sn-slc-500-remote-io-scanner-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}