{"product_id":"allen-bradley-1771-acn15-controlnet-adapter-module","title":"Allen-Bradley 1771-ACN15 ControlNet Adapter Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-ACN15\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-ACN15\u003c\/strong\u003e Communication Interface Module, operates as a dedicated hardware component for high-speed deterministic remote I\/O link processing within ControlNet network architectures. It enables direct physical and protocol interfacing between a central programmable controller and remote 1771 Universal I\/O chassis over a single coaxial cable media system.\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\u003e1771-ACN15\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.98 lbs (0.90 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 Single-Slot Module\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\u003e1.0 A at 5 VDC (Backplane Current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Protocol\u003c\/td\u003e\n\u003ctd\u003eControlNet 1.5 and beyond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Interface\u003c\/td\u003e\n\u003ctd\u003eSingle-Port Non-Redundant BNC Coaxial\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\u003eBackplane Isolation\u003c\/td\u003e\n\u003ctd\u003e500 VAC continuous galvanic isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus \u0026amp; Deterministic Communications\u003c\/h3\u003e\n\u003cp\u003eThe module handles high-speed frame translation between the standard 1771 parallel backplane bus and the ControlNet field network. Operating over deterministic token-passing protocol layers at 5 Mbps, the 1771-ACN15 routes scheduled I\/O data transfers and unscheduled message packets without backplane traffic collisions. On-board processor logic continuously manages I\/O image table updates across local 1771 I\/O slots while maintaining synchronization with the master PLC controller node.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the backplane current draw for the 1771-ACN15 module during continuous operation?\u003c\/p\u003e\n\u003cp\u003eA: The module draws a maximum backplane current of 1.0 A at 5 VDC from the local 1771 chassis power supply.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-ACN15 support dual redundant ControlNet coaxial media connections?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1771-ACN15 is configured strictly for single-port non-redundant media connections using a single BNC tap interface.\u003c\/p\u003e\n\u003cp\u003eQ: What keying pin positions are required on the 1771 chassis backplane for this adapter?\u003c\/p\u003e\n\u003cp\u003eA: Plastic keying bands must be positioned between pins 4 and 6, and between pins 22 and 24 on the backplane connector to ensure proper module alignment and prevent incorrect module insertion.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation:\u003c\/strong\u003e De-energize the 1771 chassis power supply prior to inserting or removing the communication adapter module from the left-most adapter slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Keying Verification:\u003c\/strong\u003e Confirm that plastic keying bands are securely installed between pins 4-6 and 22-24 on the chassis backplane card connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoaxial Cable Connection:\u003c\/strong\u003e Connect the RG-6 coaxial cable trunkline tap to the front BNC port using standard 75-ohm BNC connectors and hand-tighten the bayonet lock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNode Address Selection:\u003c\/strong\u003e Set the network node address via the rotary switches located on the side panel of the module before sliding the unit into the chassis slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Protocols:\u003c\/strong\u003e Ensure the coaxial cable shield is grounded at the tap location according to standard ControlNet media isolation guidelines to eliminate differential voltage potential.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52734361239832,"sku":"1771-ACN15","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/screenshot_2026-09-20_10-16-24_29985b8d-1207-4abd-9ce2-394d143051fe.png?v=1789870682","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1771-acn15-controlnet-adapter-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}