{"product_id":"serial-communication-module-yokogawa-nflr121-s50","title":"Serial Communication Module | Yokogawa NFLR121-S50","description":"\u003ch2\u003eYokogawa NFLR121-S50 Serial Communication Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa NFLR121-S50\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eNFLR121\u003c\/strong\u003e Serial Communication Module, operates as a dedicated hardware component for RS-422\/RS-485 serial data exchange within Yokogawa STARDOM and CENTUM VP control systems.\u003c\/p\u003e\n\u003ch3\u003eHardwareSpecifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModelBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa NFLR121-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg (Net), ~1.0 kg (Shipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard STARDOM modular form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003e-10 degC to +55 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorageTemp\u003c\/td\u003e\n\u003ctd\u003e-25 degC to +70 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003e500 mA Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterfaceType\u003c\/td\u003e\n\u003ctd\u003eRS-422 \/ RS-485, 2 Ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003ePoint-to-Point (RS-422), Multipoint (RS-485)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunicationMode\u003c\/td\u003e\n\u003ctd\u003eHalf-duplex \/ Full-duplex (2-wire systems only Half-duplex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynchronization\u003c\/td\u003e\n\u003ctd\u003eStart-stop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmissionCode\u003c\/td\u003e\n\u003ctd\u003eASCII \/ Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharacterLength\u003c\/td\u003e\n\u003ctd\u003e7 or 8 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStopBits\u003c\/td\u003e\n\u003ctd\u003e1 or 2 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParityCheck\u003c\/td\u003e\n\u003ctd\u003eNone \/ Even \/ Odd\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaxTransmissionDistance\u003c\/td\u003e\n\u003ctd\u003eUp to 1,200 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003e5-pole terminal block ×2, M4 screws, built-in\/external 120-ohm termination resistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cstrong\u003eProcess Control Specific Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupports channel-to-channel isolation between serial ports to prevent electrical interference.\u003c\/li\u003e\n\u003cli\u003eCompatible with Modbus RTU\/ASCII devices for master\/slave integration.\u003c\/li\u003e\n\u003cli\u003eDiagnostic LEDs indicate TX and RX activity on each port.\u003c\/li\u003e\n\u003cli\u003eSuitable for interfacing with FOUNDATION Fieldbus and Profibus PA devices via gateway controllers.\u003c\/li\u003e\n\u003cli\u003eCold junction compensation (CJC) is implemented in signal processing to stabilize measurement across temperature variations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eQ: Can the NFLR121-S50 module operate in hot-swap conditions?\u003cbr\u003eA: The module does not support live hot-swapping; power must be removed from the rack before insertion or removal.\u003c\/p\u003e\n\u003cp\u003eQ: Are the built-in termination resistors configurable?\u003cbr\u003eA: Yes, each RS-485 port includes a switchable 120-ohm resistor for line termination based on network topology.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum allowed cable length for RS-485 communication?\u003cbr\u003eA: Up to 1,200 meters total, including all branches and spurs, with proper twisted-pair wiring and termination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eField Installation Guidelines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMount module in STARDOM\/FCN rack using standard slots; ensure firm mechanical engagement.\u003c\/li\u003e\n\u003cli\u003eConnect RS-422\/RS-485 signals with twisted pair shielded cables; terminate shields at one end only to prevent ground loops.\u003c\/li\u003e\n\u003cli\u003eMaintain separation from high-voltage power cables to reduce electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eObserve polarity for TX+\/TX- and RX+\/RX- lines; improper wiring may damage ports.\u003c\/li\u003e\n\u003cli\u003eVerify diagnostic LEDs for transmission and reception activity after installation before starting normal operation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44163810558040,"sku":"NFLR121-S50","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/NFLR121-S50.jpg?v=1780305505","url":"https:\/\/www.industriaxplc.com\/products\/serial-communication-module-yokogawa-nflr121-s50","provider":"IndustriaX Limited","version":"1.0","type":"link"}