{"product_id":"allen-bradley-1770-kfd-plc-5-devicenet-rs-232-communication-interface-module","title":"Allen-Bradley 1770-KFD PLC-5 DeviceNet RS-232 Communication Interface Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1770-KFD\u003c\/strong\u003e is a portable, standalone \u003cstrong\u003eDeviceNet RS-232 Communication Interface Module\u003c\/strong\u003e designed to provide personal computers and programming workstations direct serial access to a \u003cstrong\u003eDeviceNet\u003c\/strong\u003e industrial network. Operating as an external communication gateway, the module bridges standard RS-232 serial ports with DeviceNet field networks, enabling system integrators, control engineers, and maintenance personnel to perform online network monitoring, device configuration, node commissioning, and diagnostic procedures across distributed automation architectures.\u003c\/p\u003e\n\u003cp\u003eFunctioning within Allen-Bradley PLC-5, SLC 500, and CompactLogix automation environments, the \u003cstrong\u003e1770-KFD\u003c\/strong\u003e facilitates communication either in a point-to-point configuration directly connected to a single field device or across a multi-node DeviceNet trunkline. The module executes local network management routines and protocol conversion between RS-232 framing and DeviceNet CAN-based messaging, allowing software applications such as DeviceNet Manager or RSLinx to interface with scanners, I\/O blocks, drives, and intelligent sensors across the network.\u003c\/p\u003e\n\u003cp\u003eBuilt with a compact desktop enclosure and optional DIN rail mounting brackets, the \u003cstrong\u003e1770-KFD\u003c\/strong\u003e features dual power sourcing flexibility. It can operate directly from the 24V DC bus provided by the DeviceNet network connection or via an external 9V DC wall adapter. Status LEDs provide continuous visual feedback for module diagnostics and network bus state, streamlining field service, network troubleshooting, and parameter backup operations.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial to DeviceNet Protocol Conversion:\u003c\/strong\u003e Converts standard RS-232 serial data frames into DeviceNet CAN-based messages for PC-based commissioning and parameter management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Operation Modes:\u003c\/strong\u003e Supports point-to-point direct configuration with an individual network device as well as full multi-drop access across an active DeviceNet network segment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Sourcing Options:\u003c\/strong\u003e Operates using power drawn directly from the DeviceNet network cable (11 to 25V DC) or through an external 9V DC power supply adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Communication Baud Rates:\u003c\/strong\u003e Features RS-232 transmission speeds up to 57,600 baud and DeviceNet network data rates selectable at 125k, 250k, and 500k baud.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint-to-Point Power Delivery:\u003c\/strong\u003e Capable of supplying 12V DC power (up to 100 mA) to a connected field device during direct point-to-point setup sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic LED Indicators:\u003c\/strong\u003e Integrated visual indicators provide real-time status monitoring for module power, operational health, and DeviceNet communication activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable and DIN-Rail Mountable:\u003c\/strong\u003e Lightweight, compact enclosure suitable for benchtop service work or permanent cabinet mounting using included DIN rail adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Device Commissioning:\u003c\/strong\u003e Direct point-to-point parameter configuration of DeviceNet smart sensors, motor starters, drives, and remote I\/O modules prior to network installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Diagnostics and Monitoring:\u003c\/strong\u003e Online bus monitoring, message traffic inspection, and node address verification using PC-based software like DeviceNet Manager.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLC System Maintenance:\u003c\/strong\u003e Interface point for servicing DeviceNet scanner networks managed by Allen-Bradley PLC-5 (1771-SDN), SLC 500 (1747-SDN), or CompactLogix (1769-SDN) controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParameter Backup and Restore:\u003c\/strong\u003e Uploading and downloading device profiles, node configurations, and operational parameters during field hardware replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eGeneral\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1770-KFD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDeviceNet RS-232 Communication Interface Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Dimensions\u003c\/td\u003e\n\u003ctd\u003e13.017 x 8.255 x 2.857 cm (5.125 x 3.25 x 1.125 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e156 g (5.5 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eCommunication Parameters\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHost Interface Port\u003c\/td\u003e\n\u003ctd\u003e9-pin D-shell RS-232 (Female\/DTE connection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Interface Port\u003c\/td\u003e\n\u003ctd\u003e5-pin unsealed DeviceNet terminal receptacle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS-232 Baud Rates\u003c\/td\u003e\n\u003ctd\u003e1200, 2400, 4800, 9600, 19,200, 38,400, 57,600 baud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Baud Rates\u003c\/td\u003e\n\u003ctd\u003e125k, 250k, 500k baud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Power Pass-Through\u003c\/td\u003e\n\u003ctd\u003e11 to 25V DC network power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eElectrical Requirements\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal AC Adapter Input\u003c\/td\u003e\n\u003ctd\u003e9V DC @ 1 A (via 120V AC or global 90-260V AC wall adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Bus Current Draw\u003c\/td\u003e\n\u003ctd\u003e700 mA to 300 mA (11 to 25V DC range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary Output Power (Point-to-Point)\u003c\/td\u003e\n\u003ctd\u003e12V DC ±5% @ 100 mA max (for target field device)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 50 degC (32 to 122 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC (-40 to 185 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e9-pin D-shell RS-232 Connector\u003c\/td\u003e\n\u003ctd\u003eConnects via 9-pin null-modem serial cable to PC COM port or modem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5-pin Unsealed DeviceNet Connector\u003c\/td\u003e\n\u003ctd\u003eConnects to DeviceNet trunkline or drop cable (V-, CAN_L, Shield, CAN_H, V+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power Jack\u003c\/td\u003e\n\u003ctd\u003eReceptacle for 9V DC external AC wall power adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Selector Switch\u003c\/td\u003e\n\u003ctd\u003eToggles operational power state between External AC Adapter and Network Power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Precaution:\u003c\/strong\u003e Verify that all electrical power sources are disconnected or de-energized according to industrial safety protocols before modifying control panel wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Use the module as a portable desktop unit, or install the provided DIN rail mounting brackets using the four mounting screws to attach the module onto a standard 35 mm DIN rail inside a enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Cable Connection:\u003c\/strong\u003e Connect the 9-pin D-shell RS-232 port on the module to an available serial COM port on the host workstation using a standard 9-pin null-modem cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeviceNet Bus Connection:\u003c\/strong\u003e Wire the 5-pin unsealed DeviceNet terminal connector to the network drop cable, ensuring proper pin assignment matching for signal (CAN_H, CAN_L), power (V+, V-), and drain\/shield lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source Verification:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eFor network-powered operation, ensure the active DeviceNet bus provides between 11V DC and 25V DC across the V+ and V- terminals. Note that active network power overrides external power input.\u003c\/li\u003e\n\u003cli\u003eFor standalone benchtop setup, connect the approved 9V DC wall adapter into the DC power jack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ensure proper shielding and signal grounding principles are maintained along the DeviceNet network drop line to prevent noise interference.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eConfiguration \/ Commissioning \/ Replacement\u003c\/h3\u003e\n\u003ch4\u003eConfiguration Guidelines\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the appropriate 1770-KFD driver software or serial driver within RSLinx \/ DeviceNet Manager on the PC host.\u003c\/li\u003e\n\u003cli\u003eMatch the driver serial baud rate setting in software to the physical switch\/software selection configured on the 1770-KFD module (up to 57,600 baud).\u003c\/li\u003e\n\u003cli\u003eEnsure the target DeviceNet network transmission rate (125k, 250k, or 500k baud) matches the operational baud rate of all nodes connected to the bus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCommissioning \u0026amp; Diagnostics\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eObserve the module status LEDs upon powering the unit. Verify stable power illumination and normal communication toggling on both serial and network lines.\u003c\/li\u003e\n\u003cli\u003ePerform node detection scanning from the workstation software to confirm online visibility of connected DeviceNet field devices or PLC scanner modules (such as 1771-SDN, 1747-SDN, or 1769-SDN).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eReplacement Recommendations\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWhen replacing an existing 1770-KFD interface module, confirm that serial driver configurations and baud rate selections in RSLinx or host software match previous system parameters.\u003c\/li\u003e\n\u003cli\u003eDisconnect the DeviceNet terminal block from the old module and plug it directly into the replacement unit without altering individual wire terminations.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770301473131,"sku":"1770-KFD","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1770-KFD_1200x1200_36afccc8-e49d-4f1c-a09a-1f06b5e73a85.webp?v=1787880615","url":"https:\/\/www.plcprotech.com\/it\/products\/allen-bradley-1770-kfd-plc-5-devicenet-rs-232-communication-interface-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}