{"product_id":"yokogawa-acm22rs-422-485serial-card-communication-modules","title":"Yokogawa ACM22RS-422\/485Serial Card Communication Modules","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa ACM22RS-422\/485\u003c\/strong\u003e serves as the primary \u003cstrong\u003eACM22RS\u003c\/strong\u003e Communication Module utilized to execute deterministic data routing across integrated production control system platforms. This hardware card establishes a multi-drop physical link interface to map register variables and process metrics between field instrumentation networks and the central control architecture.\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\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003eACM22RS-422\/485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa Electric Corporation\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\u003eStandard Yokogawa card nest footprint weight profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eMatches standard Yokogawa system nest slot configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial control room environment limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSourced via integrated system nest backplane power lines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGeneral Purpose Communication Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Port Configuration\u003c\/td\u003e\n\u003ctd\u003eDual-protocol differential interface: RS-422 or RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Protocol Layout\u003c\/td\u003e\n\u003ctd\u003eSoftware-selectable or jumper-defined differential signaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Mode\u003c\/td\u003e\n\u003ctd\u003eAsynchronous, balanced differential data execution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Instrumentation and DCS Communication\u003c\/h3\u003e\n\u003cp\u003eThe communication card establishes localized network conditioning matrices to maintain stable loop updates across separate distributed control domains. When linking data trends between field instruments—including parameters managed via the 4-20 mA HART loop protocol—and the central control architecture, the unit processes asynchronous data blocks over an RS-422 or RS-485 physical layer.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the differential signaling of the ACM22RS-422\/485 module improve communication reliability compared to RS-232C variants?\u003c\/p\u003e\n\u003cp\u003eA: RS-422 and RS-485 utilize balanced differential voltage signals over twisted-pair wiring rather than single-ended signals referenced to a common ground. This hardware design allows the module to reject high-frequency common-mode noise and electromagnetic interference, extending the stable transmission distance up to 1200 meters (4000 feet).\u003c\/p\u003e\n\u003cp\u003eQ: What is the primary difference in network topology execution between the RS-422 and RS-485 configurations on this card?\u003c\/p\u003e\n\u003cp\u003eA: The RS-422 configuration operates as a full-duplex, point-to-multipoint topology utilizing separate transmit and receive wire pairs for simultaneous bidirectional data flow. The RS-485 configuration operates as a half-duplex, multipoint bus topology utilizing a single shared wire pair, allowing up to 32 field devices to communicate on the same trunk sequence.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":47613916217534,"sku":"ACM22RS-422\/485","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-08_11-02-35_a0e43a11-7098-4fe4-b3a9-046aa6b74282.png?v=1780887886","url":"https:\/\/www.autooiltech.com\/es\/products\/yokogawa-acm22rs-422-485serial-card-communication-modules","provider":"AutoOilTech Limited","version":"1.0","type":"link"}