{"product_id":"schneider-electric-170nef16021-modicon-momentum-modbus-plus-communication-adapter","title":"Schneider Electric 170NEF16021 Modicon Momentum Modbus Plus Communication Adapter","description":"\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eFacilitating high-availability network topologies, the \u003cstrong\u003eSchneider Electric 170NEF16021\u003c\/strong\u003e serves as a dedicated Modbus Plus communication adapter with redundant ports for the Modicon Momentum platform. This module mounts directly onto Momentum I\/O bases, enabling distributed field devices to communicate over a dual-path Modbus Plus network for enhanced fault tolerance in mission-critical control architectures.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-left: 1.5rem; margin-bottom: 1rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRedundant Modbus Plus Ports:\u003c\/strong\u003e Dual DB9 connectors provide physical media path redundancy to prevent communication loss in the event of a cable break.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Base Integration:\u003c\/strong\u003e Snaps directly onto any Modicon Momentum I\/O base, eliminating the need for external backplanes or inter-module wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtocol Support:\u003c\/strong\u003e Fully compatible with Modbus Plus (984) token-ring database and peer-to-peer communication structures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiagnostic Indicators:\u003c\/strong\u003e Front-facing LEDs provide real-time status updates for network activity, port health, and module diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-left: 1.5rem; margin-bottom: 1rem;\"\u003e\n  \u003cli\u003eHigh-availability water and wastewater treatment facilities.\u003c\/li\u003e\n  \u003cli\u003eContinuous process industries requiring redundant communication paths.\u003c\/li\u003e\n  \u003cli\u003eLegacy Modicon 984 and Quantum control system migrations and expansions.\u003c\/li\u003e\n  \u003cli\u003eDistributed telemetry and SCADA RTU networks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSchneider Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eBrand \/ Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eModicon Momentum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e170NEF16021\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProduct Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eModbus Plus Communication Adapter (Redundant)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCommunication Ports\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2 x Modbus Plus (DB9 Female)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eNetwork Topology\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eToken Ring (Redundant Path)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProduct Lifecycle Phase\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003ePhase-Out (Legacy)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCommodity Code\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e85389091\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.21 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e18.0 x 26.0 x 5.5 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003ePort \/ Terminal\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eInterface Type\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eFunction \/ Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePort A\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e9-pin D-sub (DB9) Female\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003ePrimary Modbus Plus Network Cable Connection\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePort B\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e9-pin D-sub (DB9) Female\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSecondary (Redundant) Modbus Plus Network Cable Connection\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 170NEF16021 is designed specifically for redundant Modbus Plus network layouts. If physical media redundancy is not required, the single-port 170NEF11021 adapter can be utilized as a non-redundant alternative. Ensure that your network configuration software (such as Modsoft, Concept, or Unity Pro \/ EcoStruxure Control Expert) is configured for dual-cable operation when deploying the redundant variant.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eModbus Plus networks require strict adherence to trunk-and-drop cabling rules. The drop cable length from the tap to the 170NEF16021 must not exceed 10 feet (3 meters). Additionally, cumulative drop cable lengths across the entire segment must be factored into the overall network length calculations to prevent token rotation timeouts and communication retries.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen wiring the redundant ports, ensure that Port A on all adapters is connected to the primary trunk cable, and Port B is connected to the secondary trunk cable. Crossing the primary and secondary paths can cause network synchronization errors. Set the unique node address using the DIP switches on the associated Momentum I\/O base before snapping the communication adapter into place.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 0.5rem 0;\"\u003eCRITICAL WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eDe-energize all power sources supplying the Modicon Momentum I\/O base and associated field wiring before mounting or removing the communication adapter. Failure to do so can cause electrical arcing, damage internal backplane contacts, or initiate unexpected control system states.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eVerify that the node address DIP switches on the Momentum I\/O base are set to the correct, unique address assigned to this node on the Modbus Plus network.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eAlign the 170NEF16021 adapter with the interface connectors on the front of the Momentum I\/O base.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003ePress the adapter firmly onto the base until the side locking tabs click securely into place, ensuring a flush mechanical connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the primary Modbus Plus drop cable to Port A and the redundant drop cable to Port B, tightening the DB9 connector screws to secure the physical connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":53104567877995,"sku":"170NEF16021","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/170nef16021-mrayaz4ybd5.png?v=1776159741","url":"https:\/\/www.plcprotech.com\/fa\/products\/schneider-electric-170nef16021-modicon-momentum-modbus-plus-communication-adapter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}