{"product_id":"1771-acn-allen-bradley-controlnet-adapter-module-plc-5","title":"1771-ACN Allen-Bradley ControlNet adapter Module PLC-5","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-ACN\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-ACN\u003c\/strong\u003e I\/O Adaptor Module, operates as a dedicated hardware component for high-speed deterministic field communication within Allen-Bradley PLC-5 chassis platforms. It links remote 1771 I\/O chassis to a ControlNet cable system, permitting real-time data transfer between the central processor and distributed I\/O modules without requiring direct rack placement. The unit manages backplane timing, packet routing, and local power distribution across the internal 1771 backplane structure.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown \u0026amp; Configuration Matrix\u003c\/h3\u003e\n\u003cp\u003eThe 1771-ACN designation defines the explicit functional profile within the 1771 architecture. The prefix \"1771\" denotes compatibility with the heavy-duty 1771 rack and power supply series. The \"ACN\" suffix designates ControlNet network adapter functionality. This module connects to coaxial ControlNet media using standard BNC taps, converting network token-pass frames into parallel 1771 backplane read\/write commands for local digital, analog, and intelligent block modules.\u003c\/p\u003e\n\u003ch3\u003eCore Electrical \u0026amp; Environmental Parameters\u003c\/h3\u003e\n\u003cfigure\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-ACN\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\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eI\/O Adaptor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5\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\u003ePlace of Shipment\u003c\/td\u003e\n\u003ctd\u003eXiamen, China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.96 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e5 x 16.5 x 27.4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e1.0 A at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e17.06 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Connector Keying\u003c\/td\u003e\n\u003ctd\u003ePins 54 to 56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLower Connector Keying\u003c\/td\u003e\n\u003ctd\u003ePins 16 to 18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e32 to 140 deg F (0 to 60 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 185 deg F (-40 to 85 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Integration \u0026amp; Deterministic Network Execution\u003c\/h3\u003e\n\u003cp\u003eThe 1771-ACN leverages high-speed backplane bus communication velocity Licences to maintain continuous synchronicity between field devices and the PLC-5 processor. Operable over EtherNet\/IP deterministic networks and ControlNet media, the adapter scales I\/O density by mapping multi-rack configurations into single logical image tables. Integrated firmware flash compatibility guarantees seamless protocol synchronization, eliminating packet drops during heavy backplane scanning cycles and preventing I\/O updating delays across large-scale industrial installations.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents \u0026amp; Kit Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1771-ACN ControlNet Adapter Module\u003c\/li\u003e\n\u003cli\u003e2 x Plastic chassis keying bands\u003c\/li\u003e\n\u003cli\u003e1 x Anti-static protective enclosure packaging\u003c\/li\u003e\n\u003cli\u003e1 x Installation insert sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMounting \u0026amp; Mechanical Installation Directives\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeying Insertion\u003c\/strong\u003e: Place mechanical keying bands on the backplane connector between pins 54-56 (upper slot) and pins 16-18 (lower slot) prior to module insertion to prevent damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Alignment\u003c\/strong\u003e: Align the card guides of the leftmost slot in the 1771 chassis; slide the module firmly until the top locking latch fully engages with the chassis frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoaxial Connection\u003c\/strong\u003e: Connect the ControlNet BNC tap directly to the front-panel RG-6 coaxial connector. Ensure a 75-ohm trunk terminator is installed at both physical cable ends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Requirements\u003c\/strong\u003e: Secure the chassis ground wire to the enclosure grounding bus using minimum 14 AWG copper wire to prevent electrical noise interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Inquiries \u0026amp; Field Diagnostics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the backplane current demand for the 1771-ACN module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module draws exactly 1.0 A at 5 VDC from the internal 1771 backplane power supply. Ensure total rack current calculation accounts for this load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow is physical connector keying established for this adapter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeying is established using plastic keying bands placed on the upper connector at pins 54-56 and lower connector at pins 16-18 inside the chassis slot.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1771-ACN be inserted or removed under backplane power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, power to the 1771 I\/O chassis backplane must be completely switched off before inserting or removing the module to avoid hardware damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat thermal dissipation must be factored into cabinet cooling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module generates a thermal dissipation rate of 17.06 BTU\/hr with a total power dissipation rating of 5 W during normal continuous operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat media type does the 1771-ACN use for network link connection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt connects to ControlNet coaxial cable systems using standard RG-6 quad-shield cable and 75-ohm BNC tap connectors attached to the front panel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat operating temperature range does the 1771-ACN support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe hardware operates within a ambient thermal envelope of 32 to 140 deg F (0 to 60 deg C) and stores between -40 to 185 deg F (-40 to 85 deg C).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhere is the 1771-ACN module positioned inside the 1771 chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-ACN adapter must always be installed in the leftmost slot (Slot 0) of the 1771 I\/O chassis to govern backplane communication correctly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the total weight and shipping dimension for transport planning?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module weighs 0.96 kg with estimated shipping dimensions measuring approximately 5 cm x 16.5 cm x 27.4 cm in standard protective packaging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066442338477,"sku":"1771-ACN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1771-acn.jpg?v=1786545707","url":"https:\/\/www.maxwellplc.com\/products\/1771-acn-allen-bradley-controlnet-adapter-module-plc-5","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}