{"product_id":"fixed-i-o-controllers-allen-bradley-1747-l30l","title":"Fixed I\/O Controllers | Allen-Bradley 1747-L30L","description":"\u003cp\u003eThe Allen-Bradley \u003cstrong\u003e1756-CNBR\/E\u003c\/strong\u003e (Series E) is a ControlLogix communication bridge module engineered to establish fault-tolerant connections over redundant ControlNet network topologies. Designed for medium-scale industrial control setups, this single-slot module enables real-time peer-to-peer data exchange and I\/O communication using the Common Industrial Protocol (CIP). It supports up to 99 nodes per ControlNet segment, handling between 40 to 48 Logix connections and up to 64 maximum concurrent communication connections.\u003c\/p\u003e\n\u003ch3\u003eRedundant Network Operation and Architecture\u003c\/h3\u003e\n\u003cp\u003eThe Series E module features dual BNC connectors to interface directly with redundant coaxial ControlNet trunk lines at a standard data transfer rate of 5 Mbps. This dual-port architecture ensures continuous network uptime by allowing automatic media failover should one coaxial cable segment experience a fault or signal degradation.\u003c\/p\u003e\n\u003ch3\u003eSystem Power and Thermal Performance\u003c\/h3\u003e\n\u003cp\u003eEngineered for installation in any standard 1756 ControlLogix chassis, the 1756-CNBR\/E draws operational power directly from the backplane. The module features an optimized power dissipation rating of 5.1 Watts, minimizing thermal loading within the local controller rack.\u003c\/p\u003e\n\u003ch3\u003eTechnical 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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-CNBR\/E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSeries E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eControlNet Redundant Bridge Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eRedundant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControlNet Communication Rate\u003c\/td\u003e\n\u003ctd\u003e5 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogix Communication Connections\u003c\/td\u003e\n\u003ctd\u003e40 to 48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Supported Connections\u003c\/td\u003e\n\u003ctd\u003e64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Nodes\u003c\/td\u003e\n\u003ctd\u003e99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5.1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.293 kg (0.65 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e1.5 kg (3.3 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: What is the primary difference between the 1756-CNB and 1756-CNBR\/E modules? A: The \"R\" designation signifies built-in support for redundant ControlNet media topologies via two physical BNC ports, enabling automatic channel failover.\u003c\/p\u003e\n\u003cp\u003eQ: How many communication connections does the 1756-CNBR\/E module support? A: It supports 40 to 48 Logix connections and a total maximum of 64 communication connections across up to 99 ControlNet nodes.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67113372450931,"sku":"1747-L30L","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1747-L30L.png?v=1793865537","url":"https:\/\/www.dcssupplier.com\/products\/fixed-i-o-controllers-allen-bradley-1747-l30l","provider":"DcsSupplier Limited","version":"1.0","type":"link"}