{"product_id":"b-r-x20hb2881-x20-series-fast-ethernet-hub-expansion-module","title":"Module d'extension concentrateur Fast Ethernet B\u0026R X20HB2881 X20","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881 (X20HB2881)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a specialized communication expansion module designed for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eB\u0026amp;R X20 System\u003c\/strong\u003e. This module functions as a dual-port Fast Ethernet hub, providing a streamlined solution for expanding network topologies within a localized PLC station. By integrating two shielded\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRJ45\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eports, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows for the straightforward branching of Ethernet-based industrial protocols. With a low power consumption of just\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.17 W\u003c\/strong\u003e, it is an energy-efficient choice for adding network nodes without significantly increasing the thermal load of the X20 backplane. This module is essential for applications requiring distributed connectivity, such as multi-axis motion control or modular conveyor systems.\u003c\/p\u003e\n\u003ch3\u003eNetwork Architecture and Signal Logic\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis engineered to maintain high signal integrity across industrial Ethernet segments, adhering to standard networking parameters for reliable data transmission.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Hub Functionality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures two integrated Fast Ethernet hubs, allowing for the connection of additional network segments or localized peripherals directly at the I\/O slice level.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Shielding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEquipped with two\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eshielded RJ45\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esockets to mitigate electromagnetic interference (EMI), a critical requirement for maintaining stable communication in environments with large motor drives or high-voltage switching.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSegment Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports a maximum segment length of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100 m\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebetween two stations, ensuring full compatibility with standard industrial Ethernet cabling and infrastructure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eB\u0026amp;R (Bernecker + Rainer)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHub Expansion Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2x Fast Ethernet\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eShielded RJ45\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax. Segment Length\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100 m\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.17 W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to +55°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDegree of Protection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4.0 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow does a hub expansion module differ from a standard Ethernet switch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike a switch that manages data packets based on MAC addresses, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehub broadcasts incoming data to all ports. In specific real-time industrial applications, this can reduce latency by eliminating the \"store-and-forward\" delay found in managed switches, provided the network traffic is appropriately managed to avoid collisions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat cabling is recommended for the 100 m segment length?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo achieve the full\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100 m\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edistance with maximum noise immunity, use at least Cat 5e (or better) industrial-grade S\/FTP (Shielded\/Foiled Twisted Pair) cabling. The shielding on the RJ45 ports of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis designed to bond with the cable shield to divert interference to the system ground.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific bus base?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, like all X20 electronics modules, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emust be paired with a compatible X20 bus base (e.g., X20BM11) to interface with the X2X Link backplane and receive its internal power supply.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Engineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNetwork Topology:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen planning your network, remember that the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efollows the standard Ethernet \"5-4-3\" rule if cascading multiple hubs. To maintain deterministic communication for real-time protocols like Ethernet POWERLINK, ensure your network depth is configured according to B\u0026amp;R’s timing recommendations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the RJ45 connectors are fully seated and the cable strain relief is utilized. In high-vibration environments (such as on-machine mounting), standard RJ45 clips can fail; using high-quality industrial patch cables with robust latching mechanisms is highly recommended.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic LEDs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilize the integrated status LEDs to verify link activity. A steady green light typically indicates a valid physical link, while flashing indicates active data transfer. If no link is established, check the cable termination and the power status of the connected station.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB2881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoffers a \"zero-configuration\" approach to network expansion. Its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4.0 kg\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eshipping weight (reflecting the robust protective packaging) ensures the high-frequency components are protected during transit. Because it draws only\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.17 W\u003c\/strong\u003e, it is ideal for high-density racks where thermal management is a priority. Its native integration into the X20 system allows for immediate recognition in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eB\u0026amp;R Automation Studio\u003c\/strong\u003e, simplifying the hardware configuration phase for network engineers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"B\u0026R","offers":[{"title":"Default Title","offer_id":53086377869675,"sku":"X20HB2881","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/x20hb2881-yenqzq1ag3f.png?v=1776064825","url":"https:\/\/www.plcprotech.com\/fr\/products\/b-r-x20hb2881-x20-series-fast-ethernet-hub-expansion-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}