{"product_id":"alr121-s53-yokogawa-communication-module-new-original-stock","title":"ALR121-S53 YOKOGAWA Communication Module | New \u0026 Original Stock","description":"\u003cp\u003eConfigured for serial data exchange between Field Control Stations (FCS) and peripheral subsystems, the \u003cstrong\u003eYOKOGAWA ALR121-S53\u003c\/strong\u003e (\u003cstrong\u003eALR121-S53\u003c\/strong\u003e Communication Module) provides direct physical signal processing and protocol management. This hardware component serves as the interface bridge utilized to execute half-duplex RS-422\/RS-485 communication across distributed industrial control network architectures.\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\u003eALR121-S53\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\u003eSubject to factory marking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eIndustrial standard range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5 A\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\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003e1200 to 38400 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Method\u003c\/td\u003e\n\u003ctd\u003eHalf-duplex, Start-stop sync\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSerial Communication and Data Integrity\u003c\/h3\u003e\n\u003cp\u003eThe ALR121-S53 supports versatile serial integration, allowing the FCS to interface with subsystems like FA-M3 controllers. The module manages frame synchronization and parity checking to ensure data packets are correctly reconstructed during transfer. By utilizing RS-485 signaling, the module enables robust multi-drop communication over distances reaching 1200 meters, which is essential for remote subsystem monitoring. The implementation of ASCII or Binary transmission codes provides flexibility for diverse communication protocols, while the galvanically isolated interface stage mitigates noise and ground loops in harsh industrial electrical environments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the ALR121-S53 operate in full-duplex mode?\u003c\/p\u003e\n\u003cp\u003eA: No. The ALR121-S53 is designed strictly for half-duplex communication. Ensure the connected subsystem protocol is configured for polling or master-slave command sequences compatible with half-duplex timing.\u003c\/p\u003e\n\u003cp\u003eQ: Is the transmission speed configurable via software?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Transmission parameters, including baud rate, parity, and character format, are configured within the engineering station settings for the corresponding FCS slot. Ensure settings match the requirements of the slave device to prevent framing errors.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Termination:\u003c\/strong\u003e For RS-485 networks, ensure the bus is terminated with a 120-ohm resistor at both extreme ends of the physical segment to prevent signal reflections. Improper termination is the primary cause of intermittent data corruption in long-distance serial links.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding:\u003c\/strong\u003e Utilize high-quality twisted-pair, shielded cabling for all serial connections. Terminate the shield at a single, verified system ground point. Do not ground the shield at both ends, as this can create ground loops that introduce noise into the communication signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Protocol:\u003c\/strong\u003e The module is designed for installation in various field control units such as AFV30 or ANB10 series. Ensure the module is firmly seated in the backplane connector and that all retention clips are fully engaged to withstand vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Routing:\u003c\/strong\u003e Maintain a minimum distance of 300 mm from high-voltage power cables or VFD output wiring to avoid electromagnetic interference (EMI) that could compromise the serial data transmission integrity.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49181450076412,"sku":"ALR121-S53","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/ALR121-SE1.jpg?v=1780882795","url":"https:\/\/www.electronicplc.com\/products\/alr121-s53-yokogawa-communication-module-new-original-stock","provider":"Electronic PLC","version":"1.0","type":"link"}