{"product_id":"nflr121-s50-yokogawa-serial-communication-module-new-original-stock","title":"NFLR121-S50 Yokogawa Serial Communication Module | New \u0026 Original Stock","description":"\u003cp\u003eConfigured for serial data exchange in STARDOM controller platforms, the \u003cstrong\u003eYokogawa NFLR121-S50\u003c\/strong\u003e (\u003cstrong\u003eNFLR121-S50\u003c\/strong\u003e Serial Communication Module) provides direct physical\/electrical execution of RS-422 and RS-485 communication protocols.\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 x 50 mm x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eConsult controller environment manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eRefer to STARDOM backplane power budget\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Type\u003c\/td\u003e\n\u003ctd\u003eRS-422 \/ RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol Support\u003c\/td\u003e\n\u003ctd\u003eModbus and subsystem integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe module facilitates data transmission between the STARDOM controller and external field devices, maintaining strictly defined protocol timings for RS-422\/RS-485 interfaces. To ensure signal integrity across long-distance serial links, the design incorporates channel-to-channel isolation that prevents ground loops and cross-talk during asynchronous communication. This hardware configuration is calibrated to handle the electrical requirements of Modbus subsystem integration, ensuring consistent frame delivery within the controller network architecture.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this module support hot-swapping while the STARDOM controller is active?\u003c\/p\u003e\n\u003cp\u003eA: Online insertion and removal (hot-swapping) capabilities are subject to the specific STARDOM rack and firmware revision. Refer to the controller system documentation to verify if the backplane power management allows for live module exchange.\u003c\/p\u003e\n\u003cp\u003eQ: Is external termination required for the RS-485 interface?\u003c\/p\u003e\n\u003cp\u003eA: Yes, standard industrial practice for RS-485 communication requires 120 Ohm termination resistors at both ends of the physical transmission line to minimize signal reflections.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the controller rack is de-energized or the slot is designated for maintenance before seating the module to prevent electrical faults on the backplane bus.\u003c\/li\u003e\n\u003cli\u003eUtilize twisted-pair shielded cabling for RS-422\/RS-485 connections to reduce electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eConnect the cable shield to the system signal ground at a single point to prevent circulating currents.\u003c\/li\u003e\n\u003cli\u003eVerify correct wiring polarity (Tx+\/Tx-, Rx+\/Rx-) based on the pinout defined in the hardware installation manual.\u003c\/li\u003e\n\u003cli\u003eConfirm that the software configuration within the STARDOM controller matches the physical baud rate, parity, and stop-bit settings of the connected field devices.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49174375661820,"sku":"NFLR121-S50","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/NFSB100-S50.jpg?v=1780450857","url":"https:\/\/www.electronicplc.com\/ar\/products\/nflr121-s50-yokogawa-serial-communication-module-new-original-stock","provider":"Electronic PLC","version":"1.0","type":"link"}