{"product_id":"beckhoff-bk1120-ethercat-bus-coupler","title":"BECKHOFF BK1120 EtherCAT Bus Coupler","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eDesigned to bridge the gap between high-speed EtherCAT networks and standard K-bus assemblies, the \u003cstrong\u003eBK1120\u003c\/strong\u003e serves as an efficient communication interface for modular automation systems. This bus coupler maps the technical signals from standard Beckhoff Bus Terminals directly into the EtherCAT protocol, enabling seamless integration into distributed control architectures without sacrificing legacy terminal compatibility.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eBK1120\u003c\/strong\u003e establishes a high-performance link between physical I\/O points and the controller. It automatically handles the conversion of process data and local bus diagnostic information, presenting it clearly to the EtherCAT master. With dual RJ45 interfaces, this module supports flexible line and daisy-chain topologies, simplifying field wiring and reducing installation costs in complex control environments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect integration of standard K-bus terminals into high-speed EtherCAT networks.\u003c\/li\u003e\n  \u003cli\u003eSupports up to 64 standard Bus Terminals directly, and up to 255 Bus Terminals using K-bus extensions.\u003c\/li\u003e\n  \u003cli\u003eEquipped with two RJ45 ports for line topology networking up to 100 meters apart.\u003c\/li\u003e\n  \u003cli\u003eHigh-density data handling with up to 1024 bytes of input and 1024 bytes of output process data.\u003c\/li\u003e\n  \u003cli\u003eIntegrated diagnostic LEDs for quick monitoring of power status, K-bus run, and network communication.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial machinery and high-speed packaging lines.\u003c\/li\u003e\n  \u003cli\u003eDistributed I\/O architectures in processing and manufacturing systems.\u003c\/li\u003e\n  \u003cli\u003eRetrofitting existing legacy K-bus terminal configurations to modern EtherCAT masters.\u003c\/li\u003e\n  \u003cli\u003eBuilding automation and HVAC control infrastructure requiring high-density point aggregation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eBECKHOFF\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePart Number \/ Model\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eBK1120\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eEtherCAT Bus Coupler for standard Bus Terminals\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eNumber of Bus Terminals\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e64 (up to 255 with K-bus extension)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMax. Process Data Space\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1024 bytes input \/ 1024 bytes output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBus Interface\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2 x RJ45\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eDistance Between Stations\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eMax. 100 m (100BASE-TX)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e24 V DC (-15 % \/ +20 %)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e70 mA + (total K-bus current)\/4 (500 mA max.)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eStarting Current\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eApprox. 2.5 x continuous current\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCurrent Supply K-Bus\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1750 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePower Contacts\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eMax. 24 V DC \/ Max. 10 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRecommended Fuse\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\u0026lt;= 10 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e500 V (power contact \/ functional ground \/ K-bus)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e-25 to +60 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e-40 to +85 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e95%, no condensation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eApprox. 0.15 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eInterface Type\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\u003e\u003cstrong\u003eRJ45 Port 1 (IN)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eEtherCAT signal input connection from previous station or master\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRJ45 Port 2 (OUT)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eEtherCAT signal output connection to next station in daisy-chain\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSpring Force Terminals\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e24 V DC power supply input and power contact distribution feed\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Install on a standard 35 mm DIN rail (EN 60715). Ensure the mounting slide latches firmly onto the rail.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCabling:\u003c\/strong\u003e Use category 5e (or higher) shielded Ethernet cables to guarantee proper signal integrity and noise immunity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ensure the DIN rail is reliably connected to a low-impedance functional earth grounding point.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply Routing:\u003c\/strong\u003e Keep power lines as short as possible and separate them from high-frequency signal cables to prevent interference.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106499846507,"sku":"BK1120","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bk1120-jwdgkqnwb51.png?v=1776243445","url":"https:\/\/www.plcprotech.com\/tr\/products\/beckhoff-bk1120-ethercat-bus-coupler","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}