{"product_id":"beckhoff-kl6011-bus-terminal-serial-interface","title":"Beckhoff KL6011 Bus Terminal Serial Interface","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eIntegrating serial communication directly into the Beckhoff I\/O system, the \u003cstrong\u003eBeckhoff KL6011\u003c\/strong\u003e serial interface terminal enables connection to devices equipped with a 20 mA current loop (TTY) interface. The terminal operates fully independently of the higher-level bus system, executing bidirectional transmission of data channels (TxD and RxD) in full duplex mode. The active or passive status of the current loop can be established through external wiring configurations, ensuring high adaptability to legacy serial interfaces, industrial weighing systems, and long-distance terminal connections up to 1000 meters.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActive\/Passive Flexibility:\u003c\/strong\u003e Configurable 2 x 20 mA active or passive current loops to interface with various sender\/receiver architectures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfigurable Baud Rates:\u003c\/strong\u003e Supports transfer rates ranging from 1200 baud up to 19,200 baud to match legacy serial peripherals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Data Buffering:\u003c\/strong\u003e Equipped with a 128-byte receive buffer and a 16-byte transmit buffer to handle temporary data peaks without processing loss.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eK-Bus Galvanic Isolation:\u003c\/strong\u003e Provides robust 500 V electrical isolation between the internal K-bus and the field-side signal paths to safeguard control networks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Process Image:\u003c\/strong\u003e Flexible bit-width configuration in the process image (from 3 x 8-bit to 5 x 8-bit user data plus control\/status byte).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLegacy Peripheral Integration:\u003c\/strong\u003e Connecting older industrial printers, barcode readers, and display terminals to modern EtherCAT\/K-bus architectures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial Weighing Systems:\u003c\/strong\u003e Direct communication with load cells and digital balances that rely on 20 mA current loops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong-Distance Serial Links:\u003c\/strong\u003e Point-to-point serial communication up to 1000 meters in high-noise environments where RS232 is ineffective.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; font-size: 0.9rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; color: #1a365d;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; color: #1a365d;\"\u003eSpecification Value\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel \/ Article Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKL6011\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInterface Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTTY (20 mA current loop)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2 (1 transmit TxD, 1 receive RxD), full duplex\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eData Transfer Rates\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\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 style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eBit Transfer Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2 x 20 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eLoop Resistance (Load)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eLess than 500 ohms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCable Length\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMax. 1000 m shielded twisted pair\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePower Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eVia the internal K-bus\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCurrent Consumption (K-bus)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTypical 55 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e500 V (K-bus to signal voltage)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProcess Image Bit Width\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\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      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProtection Class\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eIP20\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Temperature Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0 to +55 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eStorage Temperature Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e-25 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e95%, non-condensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eEx Marking\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eII 3 G Ex nA IIC T4 Gc\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eUnit Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eApprox. 60 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.15 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e125 mm x 80 mm x 25 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; font-size: 0.9rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; color: #1a365d;\"\u003eTerminal Point\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; color: #1a365d;\"\u003eSignal \/ Function\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; color: #1a365d;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e1\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTxD+\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTransmitter current loop output (Positive)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e5\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTxD-\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTransmitter current loop return (Negative)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e2\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eRxD+\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eReceiver current loop input (Positive)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e6\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eRxD-\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eReceiver current loop return (Negative)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e3\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e20 mA Active Tx\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInternal current source connection for active Tx operation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e7\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e20 mA Active Rx\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInternal current source connection for active Rx operation\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1.5rem;\"\u003eFor applications requiring pluggable wiring terminal structures, the \u003cstrong\u003eKS6011\u003c\/strong\u003e represents the direct functional alternative, retaining the exact same internal logic and register mapping. If your infrastructure utilizes RS485 or RS232 protocols rather than 20 mA current loops, migrate to the \u003cstrong\u003eKL6021\u003c\/strong\u003e or \u003cstrong\u003eKL6001\u003c\/strong\u003e terminals, respectively, as the KL6011 electrical physical layer is restricted strictly to TTY communication.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1.5rem;\"\u003eA frequent commissioning failure involves improper active\/passive configuration of the 20 mA current loop. Because a TTY loop requires exactly one current source to function, placing two active devices on the same loop will cause hardware damage or component burnout due to overcurrent. Ensure that if the connected external device is active (supplying the loop current), the KL6011 is wired strictly in its passive configuration (avoiding terminals 3 and 7).\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1.5rem;\"\u003eTo optimize transmission reliability up to the 1000 m limit, use low-capacitance, shielded twisted-pair (STP) cabling. Connect the shield on one end only—ideally at the Bus Coupler ground rail—to prevent ground loops. Note that configuration of the data format (baud rate, parity, stop bits) is managed dynamically via the terminal registers using TwinCAT or alternative coupler configuration software, requiring no physical dip-switch adjustments on the hardware block.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-size: 0.9rem;\"\u003eDisconnect all electrical supplies before inserting or removing terminals from the K-bus assembly. Failure to isolate the power contacts can lead to permanent damage of the bus contacts, the bus coupler, or the adjacent I\/O modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 3px;\"\u003eEnsure the DIN rail is securely grounded to the main cabinet ground system to facilitate proper EMC shielding.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 3px;\"\u003eMount the terminal onto the DIN rail by aligning the integrated tongue-and-groove slot with the neighboring terminal and pushing firmly until it clicks.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 3px;\"\u003eUse a flathead screwdriver to depress the spring-loaded wire clamps, insert the pre-stripped signal wires, and release to secure.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106512691563,"sku":"KL6011","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl6011-jrbju02lb1w.png?v=1776245179","url":"https:\/\/www.plcprotech.com\/ru\/products\/beckhoff-kl6011-bus-terminal-serial-interface","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}