{"product_id":"allen-bradley-plc-5-1771-db-basic-module","title":"Allen-Bradley 1771-DB PLC-5 Basic Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1771-DB is a Basic Module designed for use within the PLC-5 programmable controller system. This module provides communication capabilities, supporting DH485, PRT1, and PRT2 protocols to facilitate data exchange between the PLC-5 and peripheral devices. Please note that this module was officially discontinued by the manufacturer on December 30, 2015.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for integration with the Allen-Bradley 1771 I\/O chassis.\u003c\/li\u003e\n\u003cli\u003eSupports multiple communication ports including DH485, PRT1, and PRT2.\u003c\/li\u003e\n\u003cli\u003eRequires 0.75 Amps at 5VDC from the backplane for operation.\u003c\/li\u003e\n\u003cli\u003eCompact form factor for standard 1771 chassis mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is typically utilized in legacy PLC-5 automation environments requiring serial communication or DH485 network connectivity for HMI, programming terminals, or third-party device integration.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e1771-DB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eBasic Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eDH485, PRT1, PRT2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e0.75 Amps at 5VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus\u003c\/td\u003e\n\u003ctd\u003eDiscontinued\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the PLC-5 chassis is powered down before inserting or removing the 1771-DB module to prevent electrical damage or backplane faults.\u003c\/li\u003e\n\u003cli\u003eAlign the module carefully with the chassis slot guides and seat it firmly to ensure proper backplane connector engagement.\u003c\/li\u003e\n\u003cli\u003eUse appropriate shielded cabling for communication ports to minimize electromagnetic interference (EMI) in industrial environments.\u003c\/li\u003e\n\u003cli\u003eMaintain proper ventilation in the control cabinet to prevent heat buildup around the I\/O rack.\u003c\/li\u003e\n\u003cli\u003eFollow standard ESD (Electrostatic Discharge) precautions when handling the module to protect internal circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs the 1771-DB still available from the manufacturer?\u003c\/h3\u003e\u003cp\u003eNo, the 1771-DB was discontinued by Allen-Bradley on December 30, 2015. It is now primarily available through secondary market channels.\u003c\/p\u003e\u003ch3\u003eWhat are the power requirements for this module?\u003c\/h3\u003e\u003cp\u003eThe 1771-DB requires 0.75 Amps at 5VDC from the PLC-5 backplane.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50915183853820,"sku":"1771-DB","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_e4f1e692-2bed-4fc5-b15f-7eb0012e7175.jpg?v=1785814777","url":"https:\/\/www.electronicplc.com\/products\/allen-bradley-plc-5-1771-db-basic-module","provider":"Electronic PLC","version":"1.0","type":"link"}