{"product_id":"yokogawa-nflr121-s50-serial-communication-module-1","title":"Yokogawa NFLR121-S50 Serial Communication Module","description":"\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 serial data exchange and protocol conversion within STARDOM modular controller systems.\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\u003eNFLR121-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\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\u003e1.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 mm (W) x 50 mm (H) x 30 mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard backplane power load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eRS-422 \/ RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Signals\u003c\/td\u003e\n\u003ctd\u003eTX+, TX-, RX+, RX-, SG (Signal Ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Topology\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point, Multipoint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Cable\u003c\/td\u003e\n\u003ctd\u003eAKB161 (up to 100 m for FA500)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus and subsystem communication\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 and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe serial interface circuitry maintains high channel-to-channel isolation and differential line driving to protect backplane logic from ground potential variations across long-distance field buses. Signal lines (TX+, TX-, RX+, RX-) utilize balanced transmission mode to suppress common-mode electromagnetic noise during high-speed Modbus frame exchanges. Integrated noise filtering and galvanic isolation guard subsystem networks against high-voltage industrial field surges.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What transmission distance is supported when using the AKB161 cable with the NFLR121-S50?\u003c\/p\u003e\n\u003cp\u003eA: The AKB161 compatible cable supports serial communication distances up to 100 m when connecting to FA500 subsystems over RS-422\/RS-485 interfaces.\u003c\/p\u003e\n\u003cp\u003eQ: How should the signal ground (SG) terminal be wired in multipoint RS-485 networks?\u003c\/p\u003e\n\u003cp\u003eA: The SG terminal must be interconnected across all serial nodes to establish a common reference potential, preventing common-mode voltage limits from being exceeded while keeping the cable shield grounded at a single point.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the controller rack power supply is switched off before inserting or removing the NFLR121-S50 module from the baseplate slot.\u003c\/li\u003e\n\u003cli\u003eTerminate the RS-422\/RS-485 differential signal lines (TX\/RX) using external terminating resistors at both physical ends of a multipoint network trunk.\u003c\/li\u003e\n\u003cli\u003eWire the TX+, TX-, RX+, RX-, and SG terminals strictly according to the terminal symbol mapping to prevent signal phase reversal.\u003c\/li\u003e\n\u003cli\u003eRoute serial communication cables away from high-voltage power lines and motor drives to minimize inductive noise coupling.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":45368448647283,"sku":"NFLR121-S50","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/NFSB100-S50_1.jpg?v=1786947149","url":"https:\/\/www.dcssupplier.com\/products\/yokogawa-nflr121-s50-serial-communication-module-1","provider":"DcsSupplier Limited","version":"1.0","type":"link"}