{"product_id":"kl6021-beckhoff-bus-terminal-1-channel-serial-communication-interface-rs422rs485","title":"KL6021 | Beckhoff Bus Terminal 1-Channel Serial Communication Interface, RS422\/RS485","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"90\" data-end=\"444\"\u003eThe Beckhoff KL6021 Bus Terminal provides a 1-channel serial communication interface for devices using RS422 or RS485 standards. It supports full or half-duplex communication up to 19,200 baud with differential signal transmission, ensuring high noise immunity and reliable data exchange in industrial environments.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.964%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eBeckhoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eIndustrial Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eKL6021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eSerial Communication Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eRS422 \/ RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eCommunication Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eTxD and RxD, full or half duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eData Transfer Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e1200…19,200 baud (default: 9600 baud, 8N1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eBit Transfer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eDifferential signaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eLine Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e120 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eUp to 1000 m (twisted pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eData Buffer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e128-byte receive buffer, 16-byte transmit buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eProcess Image Bit Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eInput\/output: 3 × 8-bit user data, 1 × 8-bit control\/status (up to 5 × 8-bit possible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eVia K-bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eCurrent Consumption (K-bus)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eTyp. 65 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eCurrent Consumption (Power Contacts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e500 V (K-bus\/signal voltage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eVia Bus Coupler or controller, no address setting required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eTransmission Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eFull\/half duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eSpecial Features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eElectrically isolated signals, high interference immunity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e0…55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e-25…+85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eEnclosure Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003eDIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.1707%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 73.6962%;\"\u003e60 g (approx. 0.13 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eKL6021\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe KL6021 is part of Beckhoff’s modular Bus Terminal system, enabling serial communication between automation devices and field components via RS422 or RS485 protocols. It supports both full and half-duplex operation, providing flexibility for connecting sensors, controllers, or communication devices across long distances. The module transmits differential signals with a line impedance of 120 Ω, ensuring stable operation and superior resistance to electromagnetic interference. Featuring electrical isolation between the K-bus and signal voltage, the KL6021 enhances system safety and data reliability. Configuration is handled directly through the Bus Coupler or the control software, eliminating the need for manual address settings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVersatile Serial Interface: Supports RS422 and RS485 communication standards for diverse industrial device integration.\u003c\/li\u003e\n\u003cli\u003eFull\/Half Duplex Capability: Enables flexible communication modes to suit different network configurations.\u003c\/li\u003e\n\u003cli\u003eHigh Noise Immunity: Differential signaling and 120 Ω line impedance ensure stable data transmission in noisy environments.\u003c\/li\u003e\n\u003cli\u003eLong-Distance Communication: Allows transmission over twisted-pair cables up to 1000 meters in length.\u003c\/li\u003e\n\u003cli\u003eBuffered Data Handling: Features 128-byte receive and 16-byte transmit buffers for efficient data management.\u003c\/li\u003e\n\u003cli\u003eElectrical Isolation: Provides 500 V isolation between K-bus and signal voltage for enhanced protection.\u003c\/li\u003e\n\u003cli\u003eAutomatic Configuration: Easily configured via Bus Coupler or controller without manual address setting.\u003c\/li\u003e\n\u003cli\u003eCompact Industrial Design: IP20-rated terminal ideal for DIN-rail mounting in control cabinets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe KL6021 delivers the reliability and precision required for secure and stable serial data communication within distributed automation systems.\u003c\/p\u003e","brand":"Beckhoff","offers":[{"title":"Default Title","offer_id":49105099915520,"sku":"KL6021","price":495.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/kl6021_ks6021__web_preview.png?v=1785540185","url":"https:\/\/alotechparts.com\/products\/kl6021-beckhoff-bus-terminal-1-channel-serial-communication-interface-rs422rs485","provider":"Alo Tech Solutions","version":"1.0","type":"link"}