{"product_id":"allen-bradley-1756-cnb-industrial-automation-module-heavy-duty","title":"Allen-Bradley 1756-CNB Industrial Automation Module - Heavy-Duty","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-CNB\u003c\/strong\u003e is a ControlLogix ControlNet Bridge Module designed to interface a ControlLogix rack with a ControlNet network. It provides adapter functionality for remote I\/O, messaging, and bridging between the backplane and ControlNet. With support for up to 99 nodes and 64 connections, this module is ideal for distributed I\/O applications and HMI\/SCADA integration.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaximum nodes: 99\u003c\/li\u003e\n\u003cli\u003eMaximum connections: 64\u003c\/li\u003e\n\u003cli\u003eControlNet communication rate: 5 megabits per second\u003c\/li\u003e\n\u003cli\u003eInput current: 970 mA at 5.1 V DC, 1.7 mA at 24 V DC\u003c\/li\u003e\n\u003cli\u003ePower dissipation: 5.1 W\u003c\/li\u003e\n\u003cli\u003eThermal dissipation: 17.4 BTU\/hr\u003c\/li\u003e\n\u003cli\u003eSlot width: 1\u003c\/li\u003e\n\u003cli\u003eWeight: 0.57 lb (0.26 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\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\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1756-CNB\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\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eBridge Module\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\u003eMaximum Connections\u003c\/td\u003e\n\u003ctd\u003e64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Rate\u003c\/td\u003e\n\u003ctd\u003e5 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e970 mA @ 5.1 V DC, 1.7 mA @ 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e17.4 BTU\/hr\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\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.57 lb (0.26 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e10612598174079\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e1756-CNB\u003c\/strong\u003e is commonly deployed in manufacturing plants, water treatment facilities, and material handling systems. It enables distributed I\/O by connecting remote ControlLogix racks over ControlNet. It also supports HMI and SCADA interfaces, allowing operators to monitor and control processes in real time. For applications requiring 40–48 Logix communication connections per module, the 1756-CNB is a perfect fit.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eInstall the module in any ControlLogix chassis slot. Set the node address switches to a unique address between 01 and 99 before power-up. For redundant control, use identical pairs of modules with the same node address. Ensure proper path information is configured for message routing.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRegularly inspect the BNC and RJ-45 connectors for damage or loose connections. The module's front panel displays diagnostic information, including connection status and error counters. Keep the module free from dust and moisture to ensure long-term reliability.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1756-CNB works with ControlNet networks and is compatible with Flex I\/O, POINT I\/O, SLC and PLC5 ControlNet modules, and ControlNet interface cards. It supports scheduled and unscheduled messaging, produced\/consumed tags, and MSG instructions.\u003c\/p\u003e\u003ch2\u003eBuying Guide\u003c\/h2\u003e\u003cp\u003eWhen purchasing a 1756-CNB, verify the part number and ensure it matches your ControlLogix system requirements. Check the node address and connection capacity. For genuine parts and reliable service, choose PLC Source PRO as your supplier.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44434868797539,"sku":"1756-CNB","price":223.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1756-2WS_edd415a6-57bf-4aaa-ade2-f6082b5ec132.jpg?v=1785776952","url":"https:\/\/www.plcsourcepro.com\/products\/allen-bradley-1756-cnb-industrial-automation-module-heavy-duty","provider":"PLC Source PRO","version":"1.0","type":"link"}