{"product_id":"yokogawa-alr121-s53-serial-communication-module","title":"Yokogawa ALR121-S53 Serial Communication Module","description":"\u003ch2\u003eYokogawa ALR121-S53 Serial Communication Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for serial data communication in Yokogawa Field Control Station architectures, the \u003cstrong\u003eYokogawa ALR121-S53\u003c\/strong\u003e (\u003cstrong\u003eALR121\u003c\/strong\u003e Serial Communication Module) provides direct physical\/electrical execution of RS-422 and RS-485 communication functions between control stations and connected subsystems. The module supports dual communication ports, start-stop synchronization, ASCII or binary transmission formats, and half-duplex operation for subsystem integration.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Element\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eALR121\u003c\/td\u003e\n\u003ctd\u003eSerial Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-S\u003c\/td\u003e\n\u003ctd\u003eStandard type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eBasic type without explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 corrosion-resistant specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\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\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\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSerial Communication Module\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\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Method\u003c\/td\u003e\n\u003ctd\u003eHalf-duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynchronization Method\u003c\/td\u003e\n\u003ctd\u003eStart-stop synchronization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Code\u003c\/td\u003e\n\u003ctd\u003eASCII \/ Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharacter Length\u003c\/td\u003e\n\u003ctd\u003e7 bits \/ 8 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStop Bit Length\u003c\/td\u003e\n\u003ctd\u003e1 bit \/ 2 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParity Check\u003c\/td\u003e\n\u003ctd\u003eNone \/ Even \/ Odd\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003e1200 \/ 2400 \/ 4800 \/ 9600 \/ 19200 \/ 38400 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Transmission Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 1200 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS-485 Topology\u003c\/td\u003e\n\u003ctd\u003eMultipoint communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS-422 Topology\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point communication\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.34 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Compatibility\u003c\/td\u003e\n\u003ctd\u003eAFV30, AFV40, ANB10, ANB11 and compatible field control units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Method\u003c\/td\u003e\n\u003ctd\u003eTerminal block with M4 screw connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation and DCS Communication Integration\u003c\/h3\u003e\n\u003cp\u003eAs a Yokogawa DCS communication module, the ALR121-S53 is intended for subsystem-level serial data exchange through RS-422 or RS-485 physical layers. Communication parameters including baud rate, parity, character length, and stop bits can be configured to match connected subsystem requirements.\u003c\/p\u003e\n\u003cp\u003eThe module supports ASCII and binary transmission modes and can be integrated with Modbus RTU slave communication functions where system configuration permits. Dual communication ports allow independent connections to external controllers, intelligent devices, or subsystem interfaces within the same control platform.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the ALR121-S53 support both RS-422 and RS-485 networks?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The module supports RS-422 point-to-point communication and RS-485 multipoint communication through its serial communication interfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum supported communication distance?\u003c\/strong\u003e\u003cbr\u003eA: The specified total extended transmission distance is up to 1200 m when suitable communication cable and installation practices are applied.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can communication parameters be configured for different field devices?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The module supports selectable baud rates, parity settings, character lengths, stop bits, and transmission formats according to system configuration requirements.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that RS-422 or RS-485 network topology matches the connected subsystem design before commissioning.\u003c\/li\u003e\n\u003cli\u003eUse shielded communication cable recommended by the system documentation, such as approved multi-pair shielded industrial communication cable.\u003c\/li\u003e\n\u003cli\u003eRoute communication wiring separately from high-voltage power cables to reduce electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eGround cable shields according to plant grounding standards and DCS installation requirements.\u003c\/li\u003e\n\u003cli\u003eConfirm baud rate, parity, character length, and stop-bit settings are identical at both communication endpoints before energizing the network.\u003c\/li\u003e\n\u003cli\u003eTighten terminal block connections according to approved maintenance procedures and inspect periodically for loosened conductors.\u003c\/li\u003e\n\u003cli\u003eObserve controller cabinet environmental requirements specified by the host control system documentation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44174870413400,"sku":"ALR121-S53","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/ALR121-S53-3.jpg?v=1780451614","url":"https:\/\/www.industriaxplc.com\/id\/products\/yokogawa-alr121-s53-serial-communication-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}