{"product_id":"p0971wv-foxboro-dual-nodebus-interface","title":"P0971WV Foxboro Dual Nodebus Interface","description":"\u003cp\u003eThe \u003cstrong\u003eFoxboro P0971WV\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eP0971WV\u003c\/strong\u003e Dual Nodebus Interface (DNBT) Module, operates as a dedicated hardware component for dual-path inter-node communication routing within Foxboro I\/A Series DCS networks. It provides physical node bus access across primary and secondary communication paths to facilitate continuous frame transmission and process data exchange between control processors and I\/O subsystems.\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\u003eP0971WV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\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\u003e0.48 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eRack-mounted sub-rack interface housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSystem backplane powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDual Nodebus Interface (DNBT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003eFoxboro I\/A Series redundant node bus structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Compatibility\u003c\/td\u003e\n\u003ctd\u003eAnalog and digital I\/O bus integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Loop Signal Conditioning and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe Foxboro P0971WV utilizes channel-to-channel isolation circuits across its dual bus interface transceivers to isolate internal node processing logic from field-induced electrical noise. By decoupling primary and secondary communication channels, the module suppresses ground loop currents and transient line surges, preserving 4-20 mA HART loop protocol signal integrity across linked I\/O sub-assemblies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the P0971WV handle a communication path failure on the primary node bus?\u003c\/p\u003e\n\u003cp\u003eA: The module automatically routes data traffic through the secondary node bus path without causing processor execution holds or dropping active I\/O telemetry frames.\u003c\/p\u003e\n\u003cp\u003eQ: Can the P0971WV interface module be replaced under power?\u003c\/p\u003e\n\u003cp\u003eA: Live replacement is supported provided the redundant node bus channel remains active and system hot-swap rules for the target rack enclosure are followed.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the P0971WV firmly into the designated rack-mount slot, ensuring top and bottom module latches are completely engaged with the chassis frame. Maintain a minimum vertical spacing of 50 mm above and below the card cage to support uninhibited convection cooling.\u003c\/p\u003e\n\u003cp\u003eConnect both primary and secondary node bus communication cables to their respective backplane connectors. Ensure cable shielding is continuously grounded to the main cabinet ground bar. For panel enclosures with external cable entry, verify that all NPT conduit fittings achieve at least 5 full threads of engagement to maintain grounding and enclosure protection standards.\u003c\/p\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":53394367152437,"sku":"P0971WV","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/P0971WV.png?v=1787558049","url":"https:\/\/www.5gplc.com\/products\/p0971wv-foxboro-dual-nodebus-interface","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}