{"product_id":"1771-sdn-allen-bradley-plc-5-devicenet-scanner-module","title":"1771-SDN Allen-Bradley PLC-5 DeviceNet Scanner Module","description":"\u003cp\u003eConfigured for network I\/O data scanning and DeviceNet field device management in PLC-5 architectures, the \u003cb\u003eAllen-Bradley 1771-SDN\u003c\/b\u003e (\u003cb\u003e1771-SDN\u003c\/b\u003e DeviceNet Scanner Module) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eDeviceNet Interface Structure\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb\u003eAllen-Bradley 1771-SDN\u003c\/b\u003e module bridges the 1771 backplane bus with field-level DeviceNet networks. Equipped with 2 communication channels, it manages Master\/Slave I\/O exchanges, explicit messaging routines, and device status tables for up to 63 node addresses per port without increasing PLC-5 processor sweep times.\u003c\/p\u003e\n\u003ch3\u003eMechanical \u0026amp; Electrical Technical Data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771-SDN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUnited States\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.85 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e25.3 x 14.6 x 3 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.0 A at 5 VDC backplane supply\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNetwork Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Channels (DeviceNet)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSystem Compatibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley PLC-5 1771 I\/O Chassis\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTariff Code\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8517620050\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDeterministic Networking \u0026amp; Controller Firmware Integration\u003c\/h3\u003e\n\u003cp\u003eThe unit transfers mapped I\/O memory tables across Profinet \/ EtherNet\/IP deterministic networks via gateway links, supporting high-capacity I\/O density scaling. Operating parameters and device scan lists align through firmware flash compatibility routines, enabling deterministic polling cycles and quick network status verification within standard 1771 backplane rack structures.\u003c\/p\u003e\n\u003ch3\u003ePackage Component List\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Allen-Bradley 1771-SDN DeviceNet Scanner Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x DeviceNet Terminal Plug Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Installation and Wiring Instruction Sheet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Cabinet Installation Procedures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDe-energize the 1771 rack chassis power supply before inserting or removing the scanner card.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSlide the module into the card guide slots until the top and bottom chassis latches snap into position.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWire the 5-conductor DeviceNet trunk line to the front terminal plug, maintaining correct wire color coding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstall 121 ohm terminating resistors across the CAN_H and CAN_L lines at both physical ends of the main trunk line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEarth the DeviceNet cable shield drain wire at one point only to prevent ground loop currents.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Support FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the primary operational function of the 1771-SDN module?\u003c\/p\u003e\n\u003cp\u003eThe module scans DeviceNet network nodes, maps field device I\/O into PLC-5 data tables, and handles explicit messaging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow many DeviceNet channels are built into the 1771-SDN scanner?\u003c\/p\u003e\n\u003cp\u003eThe front interface includes 2 independent DeviceNet channels for concurrent field network communication loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the 1771-SDN module be installed while the backplane is powered?\u003c\/p\u003e\n\u003cp\u003eNo, the 1771 chassis requires complete power isolation before module insertion or removal to prevent hardware damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat backplane current load does the scanner draw from the 1771 rack?\u003c\/p\u003e\n\u003cp\u003eThe 1771-SDN draws up to 1.0 A at 5 VDC from the local 1771 rack backplane power supply rail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat termination resistance is required on the DeviceNet channels?\u003c\/p\u003e\n\u003cp\u003eA standard 121 ohm, 1\/4 W metal film terminating resistor must be attached across CAN_H and CAN_L at trunk line endpoints.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow are network node configurations maintained during system upgrades?\u003c\/p\u003e\n\u003cp\u003eScan lists and node mappings integrate directly into the module memory using firmware flash compatibility features.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat ambient temperature range is allowable for cabinet mounting?\u003c\/p\u003e\n\u003cp\u003eThe card functions reliably in industrial enclosures operating within temperature limits of 0 to 60 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is shielding handled on the DeviceNet network connections?\u003c\/p\u003e\n\u003cp\u003eThe drain wire of the shielded twisted-pair cable must be grounded at a single central point along the trunk line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066444501165,"sku":"1771-SDN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1771-sdn_1.jpg?v=1786543431","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1771-sdn-allen-bradley-plc-5-devicenet-scanner-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}