{"product_id":"acm12-yokogawa-fa-m3-rs-422-rs-485-communication-module","title":"ACM12 | Yokogawa FA-M3 RS-422\/RS-485 Communication Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa ACM12\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a specialized serial communication interface within the FA-M3 range-free multi-controller platform. This module enables high-speed data exchange between the PLC rack and external peripheral devices via industrial-standard serial protocols. Although the manufacturer has officially discontinued this series, we supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efactory-sealed stock, providing a critical replacement path for maintaining legacy automation infrastructure.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe ACM12 integrates seamlessly into standard FA-M3 racks to provide robust differential signaling capabilities.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSerial Communication Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSupported Protocols\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS-422 \/ RS-485\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnection Method\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIndustrial Screw Terminals\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting Style\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRack Mount\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiagnostic Interface\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIntegrated Status LED Indicators\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e17.8 cm x 22.9 cm x 5.1 cm (7.0\" x 9.0\" x 2.0\")\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.8 kg (1 lbs 13.0 oz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New Original\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized Serial Connectivity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe ACM12 supports both\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS-422 and RS-485\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprotocols. This flexibility allows engineers to establish point-to-point or multi-drop network topologies, facilitating communication with varied hardware such as HMI panels, variable frequency drives (VFDs), and analytical instruments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Signal Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module utilizes a differential signaling architecture to reject common-mode noise. This ensures reliable data transmission even in environments with heavy electromagnetic interference (EMI) from large motors or high-voltage switchgear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstant Diagnostic Feedback:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFront-facing\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eStatus LED Indicators\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovide real-time visibility into module health and data traffic. Maintenance teams can instantly identify communication faults or power issues without connecting external diagnostic software, significantly reducing downtime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSecure Mechanical Termination:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features rugged\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003escrew terminals\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor field wiring. These connectors provide high vibration resistance and ensure low-contact resistance for long-term operational stability in harsh industrial settings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the ACM12 compatible with modern FA-M3 backplanes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The ACM12 follows the standard FA-M3 rack-mount form factor. It installs directly into any compatible I\/O slot, allowing you to maintain or expand existing systems without upgrading the entire controller architecture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I switch between RS-422 and RS-485 modes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMode selection typically occurs through internal hardware jumper settings or specific software configuration parameters within the PLC project. Refer to the FA-M3 communication manual for exact pinout requirements for 2-wire vs. 4-wire configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I still obtain a new unit if the manufacturer has discontinued the model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbsolutely. While Yokogawa has moved to newer generations, we specialize in providing\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal \"new-old-stock\" (NOS) units. These modules remain in their original factory packaging to guarantee they have never seen field service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum cable distance supported by the ACM12?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing high-quality shielded twisted-pair (STP) cable, the RS-422\/485 interface on the ACM12 typically supports distances up to 1,200 meters. For longer runs or extremely noisy paths, we recommend utilizing dedicated signal repeaters or optical isolators.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52550909460789,"sku":"ACM12","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/ACM12.jpg?v=1775725754","url":"https:\/\/www.5gplc.com\/products\/acm12-yokogawa-fa-m3-rs-422-rs-485-communication-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}