{"product_id":"beckhoff-ks6021-rs422-rs485-serial-interface-bus-terminal","title":"BECKHOFF KS6021 RS422\/RS485 Serial Interface Bus Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBECKHOFF KS6021\u003c\/strong\u003e is a high-performance Bus Terminal with a pluggable wiring level, designed to enable direct connection of devices with RS422 or RS485 interfaces to the K-bus system. It provides an electrically isolated, interference-immune interface for bidirectional data transfer over long distances, making it highly suitable for integrating serial communication devices into standard Beckhoff I\/O networks.\u003c\/p\u003e\n\u003cp\u003eOperating in full or half-duplex mode, the \u003cstrong\u003eBECKHOFF KS6021\u003c\/strong\u003e transmits and receives differential signals using a dedicated TxD and RxD channel architecture. The serial interface operates independently of the underlying bus system, allowing the controller to transmit data collision-free and receive data with an integrated buffer system. This model features a pluggable wiring design (indicated by the KS prefix), which simplifies terminal installation, replacement, and wiring verification without disconnecting individual field conductors.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePluggable connection level for fast, tool-free terminal replacement and streamlined wiring.\u003c\/li\u003e\n  \u003cli\u003eSupports RS422 and RS485 serial communication standards for high noise immunity.\u003c\/li\u003e\n  \u003cli\u003eFull or half-duplex data transfer modes over twisted-pair cabling.\u003c\/li\u003e\n  \u003cli\u003eIntegrated data buffering with a 128-byte receive buffer and a 16-byte transmit buffer.\u003c\/li\u003e\n  \u003cli\u003eElectrical isolation of 500 V between the internal K-bus and the field signal lines.\u003c\/li\u003e\n  \u003cli\u003eNo manual address setting required; configuration is handled via the Bus Coupler or controller.\u003c\/li\u003e\n  \u003cli\u003eClear diagnostics and operation status via K-bus communication.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntegration of serial devices such as barcode scanners, operator terminals, and printers into K-bus I\/O systems.\u003c\/li\u003e\n  \u003cli\u003eConnecting to sensors, controllers, and industrial instruments utilizing RS422 or RS485 physical layer interfaces.\u003c\/li\u003e\n  \u003cli\u003eLong-distance serial communications up to 1000 meters in noisy industrial environments.\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  \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\u003eKS6021\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eBus Terminal with pluggable wiring level\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCommunication Interface\u003c\/td\u003e\n      \u003ctd\u003eRS422\/RS485\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Channels\u003c\/td\u003e\n      \u003ctd\u003eTxD and RxD, full or half-duplex\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eElectrical and Communication\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Transfer Rates\u003c\/td\u003e\n      \u003ctd\u003e1200 to 19,200 baud (Default: 9600 baud, 8 data bits, no parity, 1 stop bit)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBit Transfer Type\u003c\/td\u003e\n      \u003ctd\u003eDifferential signal\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\u003eApproximately 1000 m (twisted pair)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Buffers\u003c\/td\u003e\n      \u003ctd\u003e128 bytes (receive), 16 bytes (transmit)\u003c\/td\u003e\n    \u003c\/tr\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\u003eK-bus Current Consumption\u003c\/td\u003e\n      \u003ctd\u003eTypical 65 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower 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\u003eProcess Image Bit Width\u003c\/td\u003e\n      \u003ctd\u003eInput\/output: 3 x 8-bit user data, 1 x 8-bit control\/status (up to 5 x 8-bit user data possible)\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  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWiring Technology\u003c\/td\u003e\n      \u003ctd\u003ePluggable wiring (tension clamp connection)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConnection Cross-section\u003c\/td\u003e\n      \u003ctd\u003eSolid conductor: 0.08 to 1.5 mm²; Flexible: 0.08 to 1.5 mm²; Ferrule: 0.14 to 1.5 mm²\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConnection Cross-section AWG\u003c\/td\u003e\n      \u003ctd\u003eAWG 28 to 16 (solid\/stranded); AWG 26 to 16 (ferrule)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStripping Length\u003c\/td\u003e\n      \u003ctd\u003e9 to 10 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n      \u003ctd\u003e12 mm x 100 mm x 68 mm\u003c\/td\u003e\n    \u003c\/tr\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\u003eMounting\u003c\/td\u003e\n      \u003ctd\u003e35 mm DIN rail (EN 60715) with locking mechanism\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e0 to +55 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature\u003c\/td\u003e\n      \u003ctd\u003e-25 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\u003eProtection Class\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eCompliance and Approvals\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCertifications\u003c\/td\u003e\n      \u003ctd\u003eCE, UL, ATEX\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\u003e\n\u003cstrong\u003eDe-energize the System:\u003c\/strong\u003e Ensure the power supply to the entire K-bus network and Bus Coupler is fully switched off before starting terminal installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount the Terminal:\u003c\/strong\u003e Align the terminal on the 35 mm DIN rail and press down until it securely locks into place, ensuring robust contact with the adjacent terminal using the side tongue-and-groove system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Connection:\u003c\/strong\u003e Actuate the tension clamp contact using a screwdriver, insert the stripped conductor (or ferrule), and release the clamp. Since this is a KS-series terminal, the complete wiring level block can be plugged or unplugged from the housing as a unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnect Shielding:\u003c\/strong\u003e Properly ground and shield the RS422\/RS485 communication line to prevent electromagnetic interference and maintain signal integrity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower and Verify:\u003c\/strong\u003e Apply power to the K-bus. Verify that the diagnostics indicate correct K-bus communication and data activity.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eReplacement Recommendations\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBECKHOFF KS6021\u003c\/strong\u003e features a pluggable wiring design that simplifies replacement tasks. When replacing an existing terminal, the wired pluggable block can be removed from the terminal housing without disconnecting the individual signal wires. Ensure the system is powered down, disconnect the plug block, swap the terminal housing on the DIN rail, and securely snap the plug block back into the new unit to minimize downtime and prevent wiring errors.\u003c\/p\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106510004587,"sku":"KS6021","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ks6021-nlwsrfpsekv.png?v=1776245333","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-ks6021-rs422-rs485-serial-interface-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}