{"product_id":"allen-bradley-1756-cn2-controlnet-dual-capacity-bridge-module","title":"Allen-Bradley 1756-CN2 ControlNet Dual Capacity Bridge Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1756-CN2 is a ControlLogix ControlNet Dual Capacity Bridge Module engineered to connect ControlNet links and route messages across your automation network. With support for up to 100 Logix connections and 99 nodes, this module delivers high-speed, deterministic communication for distributed I\/O and real-time control. Built for demanding industrial environments, the 1756-CN2 ensures reliable data exchange between controllers, I\/O modules, and operator interfaces.\u003c\/p\u003e\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\u003cp\u003eThe 1756-CN2 offers robust performance with the following measurable parameters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Nodes:\u003c\/strong\u003e 99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Connections:\u003c\/strong\u003e 131\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControlNet Communication Rate:\u003c\/strong\u003e 5 megabits per second\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Current:\u003c\/strong\u003e 1100 mA at 5.1 V DC, 3 mA at 24 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Dissipation:\u003c\/strong\u003e 19.1 BTU\/hr\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 5.6 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Width:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.57 lb (0.26 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThese specifications confirm the 1756-CN2 as a compact, efficient bridge module capable of handling heavy ControlNet traffic without compromising system performance.\u003c\/p\u003e\u003ch2\u003eReal-World Applications\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1756-CN2 excels in applications requiring high-speed I\/O bridging and remote device management. Typical use cases include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributed I\/O Control:\u003c\/strong\u003e Monitor and control I\/O modules located away from the main ControlLogix controller, reducing wiring costs and improving system flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Network Routing:\u003c\/strong\u003e Bridge ControlNet links to route messages to devices on other networks, enabling seamless integration of legacy and modern automation components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Exchange via Produced\/Consumed Tags:\u003c\/strong\u003e Transfer scheduled data between controllers and remote devices, ideal for coordinated motion or process control.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn each scenario, the 1756-CN2 delivers dependable, low-latency communication that keeps production lines running smoothly.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eInstalling the 1756-CN2 is straightforward. The module occupies a single slot and can be placed in any slot of the ControlLogix chassis. Follow these steps for proper setup:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003ePower down the chassis before inserting the module.\u003c\/li\u003e\n\u003cli\u003eAlign the module with the chassis backplane and push firmly until seated.\u003c\/li\u003e\n\u003cli\u003eConnect the ControlNet cable using either the BNC or RJ45 port, depending on your network topology.\u003c\/li\u003e\n\u003cli\u003eUse the USB 1.1 port for local configuration and diagnostics.\u003c\/li\u003e\n\u003cli\u003eConfigure the module using RSNetWorx for ControlNet to set node addresses and schedule data transfers.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eEnsure the ControlNet cable is a quad shield RG6 coaxial type for optimal signal integrity.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRegular maintenance ensures long-term reliability. The 1756-CN2 operates within a temperature range of 0 to 60 °C and a relative humidity of 5–95% (non-condensing). Inspect the module periodically for dust accumulation and ensure proper airflow around the chassis. Check cable connections for tightness and signs of wear. With minimal moving parts, the module offers a long service life when kept within environmental limits.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1756-CN2 is a member of the ControlLogix family and integrates seamlessly with Allen-Bradley controllers and I\/O modules. It supports the ControlNet network protocol and uses CIP (Common Industrial Protocol) for high-speed performance. The module also supports P2P (peer-to-peer) communication, enabling direct data exchange between nodes. This compatibility makes it an ideal choice for both new installations and upgrades to existing ControlNet networks.\u003c\/p\u003e\u003ch2\u003eBuying Guide\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Allen-Bradley 1756-CN2, verify your system's requirements:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConfirm the number of nodes and connections needed for your application.\u003c\/li\u003e\n\u003cli\u003eCheck that your ControlNet cabling and connectors are compatible.\u003c\/li\u003e\n\u003cli\u003eEnsure the module's power consumption is within your chassis power budget.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePLC Source PRO offers genuine Allen-Bradley 1756-CN2 modules with fast shipping and competitive pricing. Trust us for authentic automation parts that keep your operations running.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44434865684579,"sku":"1756-CN2","price":258.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1756-2WS_5d734b53-4dc0-4e50-ab2a-124868f513c9.jpg?v=1785776701","url":"https:\/\/www.plcsourcepro.com\/ar\/products\/allen-bradley-1756-cn2-controlnet-dual-capacity-bridge-module","provider":"PLC Source PRO","version":"1.0","type":"link"}