{"product_id":"yokogawa-alr121-s00-s1-serial-communication-module","title":"Yokogawa ALR121-S00 S1 Serial Communication Module","description":"\u003ch2\u003eYokogawa ALR121-S00 S1 Serial Communication Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa ALR121-S00 S1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eALR121\u003c\/strong\u003e Serial Communication Module, operates as a dedicated hardware component for serial data exchange via RS-422, RS-485, and RS-232C interfaces within CENTUM VP and CENTUM CS 3000 distributed control 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\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\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\u003eApprox. 0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified in source documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 degC (32 to 122 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMax. 0.5 A at 5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd\u003e2 (Port 1, Port 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Standards\u003c\/td\u003e\n\u003ctd\u003eRS-422, RS-485 (2-wire\/4-wire), RS-232C (software selectable per port)\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, 57600, 115200 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Cable Length\u003c\/td\u003e\n\u003ctd\u003eRS-422\/485: 1200 m; RS-232C: 15 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Method\u003c\/td\u003e\n\u003ctd\u003eAKB161 or AKB162 cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFieldbus Integration and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThis module supports deterministic communication performance through CENTUM VP backplane bus integration, maintaining consistent data throughput for connected subsystems. Each port operates with independent electrical isolation characteristics, preventing ground loop formation when interfacing with heterogeneous field instrumentation. The hardware complies with standard 4-20 mA loop signaling conventions where applicable in hybrid analog-digital architectures, ensuring compatibility with existing process measurement devices.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the ALR121-S00 S1 support hot-swapping without interrupting DCS operations?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module can be replaced online without powering down the station, provided the redundant configuration is active to maintain bumpless operation.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum cable length supported for RS-485 connections?\u003c\/p\u003e\n\u003cp\u003eA: The module supports up to 1200 meters for RS-422\/485 links, depending on cable quality and network topology.\u003c\/p\u003e\n\u003cp\u003eQ: Are both ports independently configurable for different serial standards?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Each port can be individually set to RS-422, RS-485, or RS-232C via software configuration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the module into the designated CENTUM VP or CS 3000 I\/O slot using correct ESD precautions. Use shielded twisted-pair cabling for RS-422\/485 connections, grounding the shield at one end only to minimize noise pickup. Maintain separation from high-voltage power wiring to prevent electromagnetic interference. Verify termination resistor settings according to the connected device specifications before energizing the system.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44209088036952,"sku":"ALR121-S00 S1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/ALR121-S00S1-3.jpg?v=1780976241","url":"https:\/\/www.industriaxplc.com\/products\/yokogawa-alr121-s00-s1-serial-communication-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}