{"product_id":"allen-bradley-1756-en2tr-controllogix-ethernet-ip-dual-port-communication-module","title":"Module de communication double port EtherNet\/IP ControlLogix Allen-Bradley 1756-EN2TR","description":"\u003ch3\u003eProduct Insights\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-EN2TR (1756EN2TR)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance, dual-port EtherNet\/IP communication module engineered for the Rockwell Automation ControlLogix platform. This module is indispensable for industrial sectors such as oil and gas refining, power generation, and automotive manufacturing, where network uptime is non-negotiable. By supporting Device Level Ring (DLR) topology, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-EN2TR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides hardware-layer redundancy that prevents system failure in the event of a single cable break. Its ability to manage high-speed I\/O data and explicit messaging simultaneously makes it the backbone of modern distributed control systems, significantly reducing unplanned downtime and enhancing plant-wide data transparency.\u003c\/p\u003e\n\u003ch3\u003eNetwork Architecture \u0026amp; Capabilities\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-EN2TR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eutilizes standard EtherNet\/IP protocols to bridge the gap between high-level information systems and floor-level industrial assets.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Port Functionality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUnlike single-port modules, the dual RJ45 ports allow for flexible topologies, including linear and DLR, eliminating the need for external Ethernet switches in many configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Connection Capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupporting up to 256 CIP connections and 128 TCP connections, this module handles dense I\/O traffic and peer-to-peer interlocking with ease.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMessage Bridging:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt facilitates seamless bridging of CIP unconnected messages (128 via backplane and 128 via Ethernet), ensuring that diagnostic and configuration data flow without bottlenecking real-time control traffic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRuggedized Security:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features 30V continuous isolation and is type-tested at 980V AC to ensure electrical noise on the factory floor does not migrate to the ControlLogix backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"\"\u003eItem\u003c\/th\u003e\n\u003cth class=\"\"\u003eSpecification\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\u003e1756-EN2TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e140 x 30 x 145 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5.1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003e5.1 V DC backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet Ports\u003c\/td\u003e\n\u003ctd\u003e2 RJ45 (10\/100 Mbps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol\u003c\/td\u003e\n\u003ctd\u003eEtherNet\/IP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCIP Connections\u003c\/td\u003e\n\u003ctd\u003eUp to 256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration\u003c\/td\u003e\n\u003ctd\u003e2 G (10 to 500 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Rating\u003c\/td\u003e\n\u003ctd\u003e30 G operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEMC Standard\u003c\/td\u003e\n\u003ctd\u003eCISPR 11 Class A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical Knowledge Base\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1756-EN2TR support Ring Redundancy without an external switch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module features integrated switching technology that specifically supports Device Level Ring (DLR) topology. This allows the module to be part of a resilient ring network where the hardware manages path recovery automatically.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 1756-EN2T and the 1756-EN2TR?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \"R\" suffix in 1756-EN2TR stands for Redundancy\/Ring. While the 1756-EN2T has only one Ethernet port, the 1756-EN2TR has two ports and supports DLR and linear topologies directly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be used in hazardous locations?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module is rated with North American Temp Code T4A and ATEX\/IECEx Temp Code T4, making it suitable for specific hazardous environments when installed in a properly rated enclosure.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDLR Implementation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen configuring a Device Level Ring, ensure that at least one node (typically a programmable controller or a specialized switch) is configured as the Ring Supervisor. While the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-EN2TR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis DLR-capable, the ring will not function as a redundant path without an active supervisor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCabling Requirements:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse Category 5e (or higher) shielded twisted-pair (STP) cabling in high-interference environments to maintain 100 Mbps speeds. Ensure the drain wire is properly grounded at the chassis to mitigate EFT (Electrically Fast Transient) issues on the Ethernet ports.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIn high-density chassis where multiple\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-EN2TR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodules are used, maintain a minimum of 2 inches of clearance above and below the chassis. The module dissipates 17.4 BTU\/h, and stagnant air can lead to thermal throttling or premature component aging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUSB Port Usage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe front-facing USB port is intended for temporary local configuration and programming only. It is not designed for permanent connection or industrial networking.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695190143339,"sku":"1756-EN2TR","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1756-en2tr-controllogix-ethernet-ip-2fhuhn1yn52_da04789d-f8dc-42a5-a256-ec7a4bbbf565.jpg?v=1766114600","url":"https:\/\/www.plcprotech.com\/fr\/products\/allen-bradley-1756-en2tr-controllogix-ethernet-ip-dual-port-communication-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}