{"product_id":"allen-bradley-1768-cnb-compactlogix-controlnet","title":"Allen-Bradley 1768-CNB CompactLogix ControlNet","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1768-CNB\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1768-CNB\u003c\/strong\u003e Communication Interface Module, operates as a dedicated hardware component for high-speed network bridging within CompactLogix 1768 controller systems.\u003c\/p\u003e\n\u003ch3\u003eHardware 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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1768-CNB\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.28 kg (0.63 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSingle-slot CompactLogix 1768 module footprint\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5.14 W (1 A at 5 VDC backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5.14 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e17.5 BTU\/hr\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\u003eMax Connections\u003c\/td\u003e\n\u003ctd\u003e48 connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Nodes\u003c\/td\u003e\n\u003ctd\u003e99 nodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectors\u003c\/td\u003e\n\u003ctd\u003e1 BNC ControlNet media connector, 1 RJ45 NAP connector\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and ControlNet Deterministic Networks\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eControlNet Deterministic Networks\u003c\/strong\u003e: Executes high-speed, repeatable control data transmission at 5 Mbps over RG-6 coaxial media, supporting up to 48 concurrent logical connections across 99 ControlNet network nodes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling\u003c\/strong\u003e: Occupies a single slot on the 1768 backplane, allowing multi-axis motion and I\/O expansion without exceeding controller power draw limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility\u003c\/strong\u003e: Fully compatible with ControlLogix and CompactLogix 1768 backplane routines via RSLogix 5000 \/ Studio 5000 environment for firmware flashing and node configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many total logical connections can the 1768-CNB module maintain concurrently?\u003c\/p\u003e\n\u003cp\u003eA: The module supports up to 48 concurrent CIP and ControlNet connections for I\/O bridging, explicit messaging, and peer-to-peer data transfer.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1768-CNB module support redundant ControlNet media channels?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1768-CNB features a single BNC media connector for non-redundant ControlNet network topologies alongside one Network Access Port (NAP).\u003c\/p\u003e\n\u003cp\u003eQ: What power draw does the module place on the 1768 system backplane?\u003c\/p\u003e\n\u003cp\u003eA: The module draws 1 A at 5 VDC from the backplane, resulting in a total power consumption and power dissipation rating of 5.14 W.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Slot Selection\u003c\/strong\u003e: Mount the module into any available slot (slots 1 through 4) on the left side of a 1768 CompactLogix controller backplane assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoaxial BNC Termination\u003c\/strong\u003e: Connect RG-6 75-ohm coaxial cable to the front BNC jack. Install 75-ohm BNC terminators at both physical ends of the ControlNet trunk line segment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Access Port (NAP)\u003c\/strong\u003e: Use the RJ45 8-pin NAP interface solely for temporary programming terminal attachment and network diagnostics using a dedicated network access cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Grounding\u003c\/strong\u003e: Verify the 1768 DIN rail or chassis panel mounting arrangement is bonded to a low-impedance earth ground conductor to comply with EMC immunity requirements.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48597107736766,"sku":"1768-CNB","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-08-07_15-03-14_1200x1200_b40aa6bf-2332-45b9-8f94-ca38afb4b566.jpg?v=1786086980","url":"https:\/\/www.autooiltech.com\/ar\/products\/allen-bradley-1768-cnb-compactlogix-controlnet","provider":"AutoOilTech Limited","version":"1.0","type":"link"}