{"product_id":"1756-enet-allen-bradley-controllogix-ethernet-bridge-module-10mbps-unit","title":"1756-ENET Allen-Bradley ControlLogix Ethernet Bridge Module - 10Mbps Unit","description":"\u003ch3\u003eExecutive Engineering Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-ENET\u003c\/strong\u003e is a foundational \u003cstrong\u003eControlLogix\u003c\/strong\u003e communication bridge module engineered by \u003cstrong\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e. Designed to link industrial controllers via Ethernet Industrial Protocol (Ethernet\/IP), this single-slot interface module provides reliable real-time I\/O control, messaging, and data exchange across linear topologies using a standard 10-BaseT interface and an auxiliary AUI port.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specification Matrix\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering Parameter\u003c\/th\u003e\n\u003cth\u003eModule Specification Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRockwell Automation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAllen-Bradley\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1756-controllogix\"\u003e\u003cstrong\u003eControlLogix\u003c\/strong\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number \/ Catalog No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1756-ENET\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEthernet Communication Module\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eOne (1) Ethernet RJ45 port; One (1) AUI Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Transfer Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e10 Mbps (half-duplex)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e900 mA at 5.1V DC; 350 mA at 24V DC\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e13.3 Watts (Thermal: 12.6 BTU\/hr)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries A and B (1756-A4, -A7, -A10, -A13)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e32°F to 140°F (0°C to 60°C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSlot Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSingle-slot (1-slot width)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFunctional Engineering \u0026amp; Network Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocol and Messaging Support\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eImplements the Common Industrial Protocol (CIP) for seamless data sharing across ControlNet and DeviceNet layers.\u003c\/li\u003e\n\u003cli\u003eOperates flexibly in either \u003cstrong\u003escanner or adapter mode\u003c\/strong\u003e to manage real-time distributed I\/O blocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Interface \u0026amp; Diagnostics\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eEquipped with front-panel \u003cstrong\u003eTXD, RXD, and OK LEDs\u003c\/strong\u003e for real-time packet transmission and hardware health monitoring.\u003c\/li\u003e\n\u003cli\u003eDisplays the unique MAC address beneath the front swing door for fast asset identification during network configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight:\u003c\/strong\u003e When maintaining legacy automation nodes utilizing the \u003cstrong\u003e1756-ENET\u003c\/strong\u003e, engineers must account for its 10 Mbps half-duplex limitation when connecting to modern switch ports. Force the connected managed switch port to 10 Mbps half-duplex rather than auto-negotiate to prevent frame collisions and cyclic redundancy check (CRC) errors on the network.\u003c\/p\u003e\n\u003ch3\u003eDiagnostics, Troubleshooting, and Error Handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Status Monitoring\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eA flashing or unlit \u003cstrong\u003e\"OK\" LED\u003c\/strong\u003e signals an internal hardware fault or corrupted firmware initialization sequence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLink Verification\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003eTXD and RXD indicators\u003c\/strong\u003e flicker dynamically during active message exchanges, confirming physical transceiver health and data flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics, Warranty, and Fulfillment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress International Freight\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRapid worldwide dispatch fulfilled securely via \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e within \u003cstrong\u003e24-48 hours\u003c\/strong\u003e from order confirmation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Warranty Protection\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eBacked by a comprehensive \u003cstrong\u003e12-month warranty\u003c\/strong\u003e ensuring total operational reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging Standards\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eShipped in anti-static industrial packaging with complete environmental protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Applications and Supported Equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLegacy industrial control rooms utilizing \u003cstrong\u003eControlLogix\u003c\/strong\u003e chassis architectures.\u003c\/li\u003e\n\u003cli\u003eDistributed manufacturing cells requiring real-time CIP messaging over copper media.\u003c\/li\u003e\n\u003cli\u003eWater treatment telemetry systems interfacing with older I\/O drops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProfessional Frequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan the 1756-ENET be upgraded directly in place to the newer 1756-ENBT model?\u003c\/strong\u003e\n\u003cp\u003eYes, the \u003cstrong\u003e1756-ENET\u003c\/strong\u003e can be swapped out for a 1756-ENBT module, though configuration parameters and IP address assignments must be re-verified in RSLogix 5000.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat causes the 10 Mbps link on the 1756-ENET to drop packets intermittently?\u003c\/strong\u003e\n\u003cp\u003ePacket drops usually stem from switch port auto-negotiation mismatches or electromagnetic interference (EMI) on unshielded twisted-pair cables running near high-power VFD lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes the 1756-ENET require a scheduling file or routing table configuration?\u003c\/strong\u003e\n\u003cp\u003eNo, unlike ControlNet modules, the Ethernet\/IP bridge does not require manual network scheduling files or routing tables for basic messaging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat buying strategy should maintenance teams follow when sourcing discontinued modules like the 1756-ENET?\u003c\/strong\u003e\n\u003cp\u003eSecure pre-tested, original surplus units from reputable suppliers to ensure firmware compatibility and avoid prolonged downtime during emergency replacements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does the auxiliary AUI port assist with module maintenance?\u003c\/strong\u003e\n\u003cp\u003eThe AUI port provides a legacy attachment point for specialized transceiver cables used during initial bench configuration or localized hardware diagnostics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013898395830,"sku":"1756-ENET","price":124.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1756-ENET.jpg?v=1786521768","url":"https:\/\/www.plcsparehub.com\/products\/1756-enet-allen-bradley-controllogix-ethernet-bridge-module-10mbps-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}