{"product_id":"schneider-asmbkt185-modbus-plus-bus-terminator","title":"Schneider ASMBKT185 Modbus Plus Bus Terminator","description":"\u003cp\u003eThe \u003cstrong\u003eSchneider Electric ASMBKT185\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eASMBKT185\u003c\/strong\u003e Modbus Plus Bus Terminator, operates as a dedicated hardware component for impedance matching, high-frequency signal absorption, and physical transmission line termination within Modbus Plus communication networks. The passive end-of-line termination assembly stabilizes signal definitions natively at the hardware tier to eliminate data packet reflections across multi-drop controller configurations.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eASMBKT185\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSchneider Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eModicon Premium, Quantum, and Momentum Automation Platforms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFrance \/ Germany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Weight\u003c\/td\u003e\n\u003ctd\u003e0.26 kg (0.57 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctional Designation\u003c\/td\u003e\n\u003ctd\u003eModbus Plus bus terminator line terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Compatibility\u003c\/td\u003e\n\u003ctd\u003e990NAD23000 Modbus Plus drop cable \/ passive junction box architectures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity Per Group\u003c\/td\u003e\n\u003ctd\u003e1 Set of 2 termination units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Communication Type\u003c\/td\u003e\n\u003ctd\u003eModbus Plus token-passing network (1 Mbps differential signaling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngress Protection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaged Dimensions (Unit 1)\u003c\/td\u003e\n\u003ctd\u003e1.700 cm (H) x 7.000 cm (W) x 9.500 cm (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaged Base Weight\u003c\/td\u003e\n\u003ctd\u003e58.000 g (2.05 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContractual Warranty Term\u003c\/td\u003e\n\u003ctd\u003e18 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Network Terminators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Communications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity Licences and Network Impedance Optimization\u003c\/strong\u003e The passive terminator assembly maintains the standard 120 Ohm differential network impedance across the physical trunk matrix. By balancing the transmission line characteristics, it suppresses waveform degradation over long-distance links, enabling the host Modicon Quantum or Premium controllers to achieve full transmission velocity without communication retry penalties or packet dropouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling and Token-Passing Topology Stabilization\u003c\/strong\u003e The terminator kit, supplied as a set of two components, maps the physical boundaries of the token-passing Modbus Plus network layer. This balancing arrangement permits peak network node density scaling up to standard architecture limits, protecting adjacent remote drive interfaces and distributed I\/O drops from signal distortions caused by open-ended trunk lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What programmatic or network faults manifest if an ASMBKT185 terminator is omitted from the physical trunk?\u003c\/p\u003e\n\u003cp\u003eA: Leaving a Modbus Plus network branch un-terminated generates immediate high-frequency waveform reflections at the open wire boundary. This echo corrupts the token-passing data frame headers, causing erratic communication timeouts, CRC frame check errors within the PLC diagnostic registers, and localized node isolation drops.\u003c\/p\u003e\n\u003cp\u003eQ: Can these passive termination units be installed or disconnected while the Modbus Plus network is actively polling?\u003c\/p\u003e\n\u003cp\u003eA: No, unseating or modifying network terminators during active communication is restricted. Breaking the electrical line continuity instantly alters the trunk impedance loop, which distorts active carrier signals and drops the network token, forcing all connected remote racks and variable speed drives into their configured communication fault fallback states.\u003c\/p\u003e","brand":"Schneider","offers":[{"title":"Default Title","offer_id":45115188314227,"sku":"ASMBKT185","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-18_17-14-37_b9632e9e-19ac-4c06-a418-e5ef47b0655a.png?v=1781775397","url":"https:\/\/www.dcssupplier.com\/products\/schneider-asmbkt185-modbus-plus-bus-terminator","provider":"DcsSupplier Limited","version":"1.0","type":"link"}