{"product_id":"beckhoff-kl6041-rs422-rs485-serial-interface-bus-terminal","title":"BECKHOFF KL6041 RS422\/RS485 Serial Interface Bus Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBECKHOFF KL6041\u003c\/strong\u003e is a high-performance serial interface Bus Terminal designed to connect devices equipped with RS422 or RS485 interfaces directly to K-bus-based automation networks. Acting as an intelligent gateway, the terminal enables the system to transmit and receive serial data streams independently of the underlying fieldbus protocol. This direct integration ensures reliable data exchange with various peripheral devices, such as barcode scanners, serial displays, operating terminals, and specialized sensors.\u003c\/p\u003e\n\u003cp\u003eThe terminal operates as an active communication module that handles the physical data transmission using differential signaling. It contains dedicated internal memory buffers to prevent data loss during periods of high bus traffic. By decoupling the serial communication cycle from the fieldbus task cycle, the \u003cstrong\u003eBECKHOFF KL6041\u003c\/strong\u003e ensures steady, precise data transmission, which is further aided by integrated galvanic isolation that protects the internal K-bus electronics from field-side interference.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-interface compatibility supporting both RS422 and RS485 serial communication.\u003c\/li\u003e\n  \u003cli\u003eFull-duplex and half-duplex data transfer modes.\u003c\/li\u003e\n  \u003cli\u003eDifferential signal transmission to minimize electromagnetic interference.\u003c\/li\u003e\n  \u003cli\u003eIntegrated line impedance of 120 ohms for matching standard communication cables.\u003c\/li\u003e\n  \u003cli\u003eOnboard data buffers, containing a 1024-byte receive buffer and a 128-byte transmit buffer.\u003c\/li\u003e\n  \u003cli\u003eGalvanic isolation rated at 500 V between the internal K-bus and the field signal lines.\u003c\/li\u003e\n  \u003cli\u003eVariable process image width up to 22 bytes of user data.\u003c\/li\u003e\n  \u003cli\u003eDirect power supply via the K-bus, eliminating the need for external power contacts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntegration of legacy serial devices including barcode scanners, scales, and label printers.\u003c\/li\u003e\n  \u003cli\u003ePoint-to-point RS422\/RS485 serial communication links over long distances up to approximately 1000 meters.\u003c\/li\u003e\n  \u003cli\u003eConnection of operator interface panels and industrial serial displays.\u003c\/li\u003e\n  \u003cli\u003eInterfacing with proprietary serial controllers and third-party instrumentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eGeneral\u003c\/h4\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\u003eBECKHOFF\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eModel\u003c\/td\u003e\n      \u003ctd\u003eKL6041\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eBus Terminal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTechnology\u003c\/td\u003e\n      \u003ctd\u003eRS422\/RS485 serial interface\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Channels\u003c\/td\u003e\n      \u003ctd\u003e1 serial channel (TxD and RxD)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperation Modes\u003c\/td\u003e\n      \u003ctd\u003eFull-duplex, half-duplex\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Transfer Rates\u003c\/td\u003e\n      \u003ctd\u003e4800 to 115,200 baud (Default: 9600 baud, 8 data bits, no parity, 1 stop bit)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLine Impedance\u003c\/td\u003e\n      \u003ctd\u003e120 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaximum Cable Length\u003c\/td\u003e\n      \u003ctd\u003eApprox. 1000 m twisted pair\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eElectrical and Buffer Specifications\u003c\/h4\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\u003ePower Supply\u003c\/td\u003e\n      \u003ctd\u003eVia the K-bus\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption K-bus\u003c\/td\u003e\n      \u003ctd\u003eTyp. 65 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption Power Contacts\u003c\/td\u003e\n      \u003ctd\u003eNone (no power contacts)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eElectrical Isolation\u003c\/td\u003e\n      \u003ctd\u003e500 V (K-bus \/ signal voltage)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eReceive Buffer\u003c\/td\u003e\n      \u003ctd\u003e1024 bytes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTransmit Buffer\u003c\/td\u003e\n      \u003ctd\u003e128 bytes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProcess Image Bit Width\u003c\/td\u003e\n      \u003ctd\u003eInput\/output: 22 x 8 bit user data, 2 x 8 bit control\/status (up to 22 bytes user data possible)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConfiguration\u003c\/td\u003e\n      \u003ctd\u003eNo address setting required; configured via Bus Coupler or controller\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eMechanical and Environmental\u003c\/h4\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\u003eWeight\u003c\/td\u003e\n      \u003ctd\u003eApprox. 60 g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e-25 degC to +60 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature\u003c\/td\u003e\n      \u003ctd\u003e-40 degC to +85 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRelative Humidity\u003c\/td\u003e\n      \u003ctd\u003e95%, non-condensing\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVibration \/ Shock Resistance\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\u003eEMC Immunity \/ Emission\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\u003eProtection Class\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInstallation Position\u003c\/td\u003e\n      \u003ctd\u003eVariable\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eCompliance and Certifications\u003c\/h4\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\u003eApprovals\u003c\/td\u003e\n      \u003ctd\u003eCE, UL, ATEX, DNV GL\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEx Marking\u003c\/td\u003e\n      \u003ctd\u003eII 3 G Ex nA IIC T4 Gc\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the system is completely de-energized and all power supplies are switched off before proceeding with installation.\u003c\/li\u003e\n  \u003cli\u003eVerify that the model number matches \u003cstrong\u003eKL6041\u003c\/strong\u003e and inspect the terminal housing for visual signs of shipping damage.\u003c\/li\u003e\n  \u003cli\u003eMount the terminal onto a standard 35 mm DIN rail by snapping it into place, ensuring the interlocking side grooves align correctly with the neighboring terminals.\u003c\/li\u003e\n  \u003cli\u003eEnsure secure mechanical locking and proper K-bus contact connection with adjacent terminals on the rail.\u003c\/li\u003e\n  \u003cli\u003eConnect the RS422 or RS485 serial signals to the terminal points using twisted-pair communication cabling. Ensure proper termination using the internal 120-ohm impedance if required by the network topology.\u003c\/li\u003e\n  \u003cli\u003eGround any cable shields appropriately to prevent electrical noise and signal degradation.\u003c\/li\u003e\n  \u003cli\u003eRe-energize the K-bus system and configure the serial communication parameters (baud rate, parity, stop bits) using TwinCAT or your standard controller configuration software.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eReplacement Recommendations\u003c\/h3\u003e\n\u003cp\u003eWhen replacing an existing \u003cstrong\u003eBECKHOFF KL6041\u003c\/strong\u003e, first isolate the power supply to the entire station. Note and document the terminal configuration and physical wiring connections before removing the faulty unit. The replacement unit does not require any hardware address settings, as configuration parameters are written automatically by the Bus Coupler or controller during initialization.\u003c\/p\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106504368491,"sku":"KL6041","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl6041-bifczdjxbt5.png?v=1776245184","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-kl6041-rs422-rs485-serial-interface-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}