{"product_id":"yokogawa-acm21-rs-232c-serial-plc-communication-module","title":"Yokogawa ACM21 RS-232C Serial PLC Communication Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACM21 is a specialized serial communication interface module within the Yokogawa PLC and machine control family. It provides a dedicated RS-232C communication channel for point-to-point asynchronous data exchange between the controller and peripheral devices. This enables seamless integration of equipment such as analytical instruments, HMIs, and serial printers into a unified automation system.\u003c\/p\u003e\n\u003cp\u003eDesigned for continuous industrial operation, the ACM21 supports high-speed data transmission up to 230 Kbps, ensuring fast and reliable transfer of process and diagnostic data. Its compact DIN rail design, low power consumption (\u0026lt;1 W), and wide operating temperature range make it suitable for space-constrained and harsh environments alike.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\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 Identification\u003c\/td\u003e\n\u003ctd\u003eACM21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEquipment Category\u003c\/td\u003e\n\u003ctd\u003ePLC Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Protocol\u003c\/td\u003e\n\u003ctd\u003eRS-232C Serial (Asynchronous)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Data Rate\u003c\/td\u003e\n\u003ctd\u003e230 Kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Weight\u003c\/td\u003e\n\u003ctd\u003e0.86 kg \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Architecture\u003c\/td\u003e\n\u003ctd\u003eShielded point-to-point communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware Origin\u003c\/td\u003e\n\u003ctd\u003eYokogawa Electric Corporation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication Context\u003c\/h3\u003e\n\u003cp\u003eThe ACM21 is commonly used in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePharmaceutical manufacturing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater treatment facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLaboratory automation systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is ideal for connecting:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eAnalytical instruments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSerial printers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLegacy or non-networked devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module provides a direct RS-232C link for tasks such as data logging, device control, and firmware configuration.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the ACM21 support multi-drop RS-485 networking?\u003c\/strong\u003e\u003cbr\u003eNo. The ACM21 is designed for RS-232C, which is a point-to-point protocol. For multi-device networking, a module supporting RS-422 or RS-485 is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum cable distance at 230 Kbps?\u003c\/strong\u003e\u003cbr\u003eFor reliable communication at 230 Kbps, it is recommended to keep cable lengths under 15 meters (50 feet) and use high-quality shielded cables to minimize signal degradation and electromagnetic interference.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51918280917304,"sku":"ACM21RS-232","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/ACM21RS-232.jpg?v=1773977768","url":"https:\/\/www.automodulexpert.com\/products\/yokogawa-acm21-rs-232c-serial-plc-communication-module","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}