{"product_id":"beckhoff-bk7350-modbus-bus-coupler","title":"Beckhoff BK7350 Modbus Bus Coupler","description":"\u003ch1\u003eBeckhoff BK7350 Modbus Bus Coupler\u003c\/h1\u003e\n\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eIntegrating Modbus RTU\/ASCII networks with modular I\/O systems, the \u003cstrong\u003eBeckhoff BK7350\u003c\/strong\u003e bus coupler serves as a reliable interface between the Modbus fieldbus and Beckhoff Bus Terminals. This compact module manages communication for up to 64 Bus Terminals, with expansion capabilities reaching up to 255 terminals using a K-bus extension. The \u003cstrong\u003eBK7350\u003c\/strong\u003e automatically configures and maps the connected digital and analog peripheral signals to the Modbus process image, ensuring seamless data exchange in decentralized automation architectures.\u003c\/p\u003e\n\n\u003cp\u003eThe unit features a standard RS485 physical interface via a 9-pin D-sub connector, supporting data transfer rates from 150 baud up to 38,400 baud. Configuration can be executed directly using the integrated rotary address switches or via the KS2000 software tool. Designed for harsh industrial environments, the module features robust electrical isolation between the power contacts, supply voltage, and the fieldbus network.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSupports Modbus RTU and Modbus ASCII protocols with RTU as the default configuration.\u003c\/li\u003e\n  \u003cli\u003eConnects up to 64 Bus Terminals directly, expandable to 255 terminals via K-bus extension.\u003c\/li\u003e\n  \u003cli\u003eProvides up to 512 bytes of input data and 512 bytes of output data capacity.\u003c\/li\u003e\n  \u003cli\u003eConfigurable addressing and parameters via physical rotary switches or KS2000 software.\u003c\/li\u003e\n  \u003cli\u003eIntegrated RS485 interface utilizing a standard 9-pin D-sub connection.\u003c\/li\u003e\n  \u003cli\u003eElectrical isolation of 500 V between power contacts, supply voltage, and fieldbus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial manufacturing and assembly line automation.\u003c\/li\u003e\n  \u003cli\u003eProcess control systems in water and wastewater treatment facilities.\u003c\/li\u003e\n  \u003cli\u003eBuilding automation and HVAC control networks.\u003c\/li\u003e\n  \u003cli\u003eRemote telemetry and distributed I\/O data acquisition.\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\u003eBK7350\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eModbus Bus Coupler\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. Number of Bytes Fieldbus\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e512 byte input and 512 byte output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eDigital Peripheral Signals\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1,020 inputs\/outputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eAnalog Peripheral Signals\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e256 inputs\/outputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eModbus RTU, Modbus ASCII (default: RTU)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eData Transfer Rates\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e150 baud to 38,400 baud\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBus Interface\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eD-sub 9-pin, RS485\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eData Transfer Medium\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eScreened, twisted copper cable 2 x 0.25 mm² (RS485)\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\u003e320 mA maximum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eStarting Current\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2.5 x continuous current\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\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\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e500 V (power contact \/ supply voltage \/ fieldbus)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eI\/O Communication Types\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eRead\/write access, optionally bit-oriented or word-oriented\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\u003eVibration\/Shock Resistance\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eConforms to EN 60068-2-6 \/ EN 60068-2-27\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEMC Immunity\/Emission\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eConforms to EN 61000-6-2 \/ EN 61000-6-4\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInstallation Position\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eVariable\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eApprox. 100 g\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\u003eConnection Specification\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\u003eBus Connection\u003c\/td\u003e\n      \u003ctd\u003e9-pin D-sub (female)\u003c\/td\u003e\n      \u003ctd\u003eRS485 Modbus communication interface\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Supply Connection\u003c\/td\u003e\n      \u003ctd\u003eSpring-force terminals\u003c\/td\u003e\n      \u003ctd\u003e24 V DC system and power contact supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInternal Bus\u003c\/td\u003e\n      \u003ctd\u003eK-bus contact strip\u003c\/td\u003e\n      \u003ctd\u003eData and power connection to Bus Terminals\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 Mount the module on a standard 35 mm DIN rail (EN 60715) in a clean, dry control cabinet.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Use screened, twisted-pair copper cabling (2 x 0.25 mm²) for the RS485 fieldbus line to prevent electromagnetic interference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ensure the DIN rail is properly grounded to the functional earth (FE) of the control cabinet.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVentilation:\u003c\/strong\u003e Maintain adequate clearance above and below the module to allow natural convection cooling. Do not block the ventilation slots.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCE\u003c\/li\u003e\n  \u003cli\u003eUL\u003c\/li\u003e\n  \u003cli\u003eATEX: II 3 G Ex ec IIC T4 Gc\u003c\/li\u003e\n  \u003cli\u003eIECEx: Ex ec IIC T4 Gc\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106519540075,"sku":"BK7350","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bk7350-prjsgf334f2.png?v=1776243470","url":"https:\/\/www.plcprotech.com\/tr\/products\/beckhoff-bk7350-modbus-bus-coupler","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}