{"product_id":"yokogawa-nflr121-s50-serial-communication-modules","title":"Yokogawa NFLR121-S50 Serial Communication Modules","description":"\u003cp\u003eConfigured for multi-device serial data exchange in STARDOM control architectures, the \u003cstrong\u003eYokogawa NFLR121-S50\u003c\/strong\u003e (\u003cstrong\u003eNFLR121\u003c\/strong\u003e Serial Communication Module) provides direct physical\/electrical execution.\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\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNFLR121-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard module weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard STARDOM module form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 VDC system backplane bus draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS-422\/RS-485 (2 Ports)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHalf-duplex \/ Full-duplex start-stop synchronization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe module incorporates channel-to-channel isolation and galvanic barriers between internal backplane logic circuits and external RS-422\/RS-485 serial ports. Integrated surge protection and noise filtering networks prevent electrical transients from degrading data streams transmitted across multipoint communication lines. Serial-to-parallel data conversion firmware operates deterministically alongside analog processing loops (such as 4-20 mA HART loop protocol gateways) to maintain synchronization and prevent communication dropouts across dense control networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the two serial ports on the NFLR121-S50 be configured independently for different communication protocols?\u003c\/p\u003e\n\u003cp\u003eA: Yes, each RS-422\/RS-485 port operates independently, allowing distinct baud rates, parity settings, and duplex modes (half-duplex or full-duplex) to be assigned per channel.\u003c\/p\u003e\n\u003cp\u003eQ: What termination requirements apply when configuring Port 1 or Port 2 for RS-485 multipoint networks?\u003c\/p\u003e\n\u003cp\u003eA: A 120 ohm line termination resistor must be installed across the physical Rx+\/Rx- or Tx+\/Tx- differential pairs at the two extreme physical ends of the RS-485 bus to eliminate signal reflections.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInsert the NFLR121-S50 module into the designated base rack slot of the STARDOM controller, pressing firmly until the retention latch locks into the chassis. Route twisted-pair shielded cables for RS-422\/RS-485 bus connections, ensuring signal wiring maintains a minimum 150 mm separation from high-voltage AC lines. Connect outer cable shields to the nearest cabinet protective earth (PE) grounding bar using low-impedance copper conductors. Maintain cabinet ambient temperature between 0 and 55 deg C to ensure stable transceiver performance.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":48759118954686,"sku":"NFLR121-S50","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/NFSB100-S50_3_bf476e14-2969-45f5-96a2-5bd46f1fe3d1.jpg?v=1787125520","url":"https:\/\/www.autooiltech.com\/products\/yokogawa-nflr121-s50-serial-communication-modules","provider":"AutoOilTech Limited","version":"1.0","type":"link"}