{"product_id":"communication-module-yokogawa-alr111-s50","title":"Communication Module Yokogawa ALR111-S50","description":"\u003ch2\u003eTechnical Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eALR111-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edual-port serial communication module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the Yokogawa CENTUM VP DCS. Designed for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS-232C connections\u003c\/strong\u003e, it integrates external subsystems—such as PLCs, analyzers, and specialized field instruments—into the control system, enabling\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebidirectional data exchange\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand reliable process monitoring.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDetailed Specifications\u003c\/h2\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eItem\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\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eSerial Communication Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eALR111-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd\u003e2 (Independent configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003e300 bps – 115.2 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Cable Length\u003c\/td\u003e\n\u003ctd\u003e15 m (Standard RS-232 limitation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols Supported\u003c\/td\u003e\n\u003ctd\u003eModbus RTU (Master\/Slave), Non-procedure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eD-sub 9-pin (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5 A at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +50°C\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eOperational Capabilities\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSupports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eindependent configuration\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof two ports for simultaneous communication with different devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eModbus Master applications\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor polling remote terminal units (RTUs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eredundant configurations\u003c\/strong\u003e: two modules can operate in tandem for uninterrupted communication in critical applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProvides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehardware flow control\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(RTS\/CTS) for stable data transfer with legacy devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between ALR111 and ALR121?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eALR111: RS-232C (short distance, point-to-point)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eALR121: RS-422\/RS-485 (longer distance, multi-drop)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be used for Modbus TCP\/IP?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eNo. ALR111-S50 is strictly\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eserial RS-232C\u003c\/strong\u003e. Use ALE111 or other Ethernet modules for Modbus TCP\/IP.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module support hardware flow control?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eYes, it supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRTS\/CTS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esignals for reliable communication with legacy peripherals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51776004751672,"sku":"ALR111-S50","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/ALR111-S50.jpg?v=1770779892","url":"https:\/\/www.automodulexpert.com\/tr\/products\/communication-module-yokogawa-alr111-s50","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}