{"product_id":"yokogawa-acm11-s2-subsystem-communication-module-datasheet","title":"Yokogawa ACM11-S2 Subsystem Communication Module Datasheet","description":"\u003ch2\u003eYokogawa ACM11 Subsystem Communication Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for serial data integration in CENTUM VP and CS 3000 systems, the \u003cstrong\u003eYokogawa ACM11-S2\u003c\/strong\u003e (\u003cstrong\u003eACM11\u003c\/strong\u003e Communication Module) provides direct physical and electrical execution for RS-232C, RS-422, and RS-485 interfacing.\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\u003eACM11-S2\u003c\/td\u003e\n\u003c\/tr\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\u003e0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard FIO Module Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eInternal RIO backplane powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterfaces\u003c\/td\u003e\n\u003ctd\u003eRS-232C, RS-422, RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Baud Rate\u003c\/td\u003e\n\u003ctd\u003e38.4 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and DCS Instrumentation Integrity\u003c\/h3\u003e\n\u003cp\u003eThe ACM11-S2 module maintains signal integrity through dedicated galvanic isolation between the field-side serial ports and the internal system backplane. This architecture prevents ground potential differences from affecting the RIO bus communication. The module utilizes internal processing to manage protocol translation, effectively offloading communication overhead from the main Field Control Station (FCS) processor. By supporting multi-drop RS-485 configurations and point-to-point RS-232C connectivity, the unit provides consistent data mapping of external subsystem registers into the host system image area.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the ACM11-S2 module support field-side termination for RS-485 networks?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module requires appropriate termination resistors at the end of the RS-485 line to prevent signal reflection. Ensure that the line topology adheres to standard daisy-chain requirements for long-distance multi-drop configurations.\u003c\/p\u003e\n\u003cp\u003eQ: Can the serial interface settings be modified while the module is active in the rack?\u003c\/p\u003e\n\u003cp\u003eA: Configuration changes, such as baud rate and parity settings, require a download from the engineering station. Always confirm that the field device communication parameters match the ACM11-S2 software configuration to prevent data framing errors.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSeat the ACM11-S2 firmly into the designated RIO rack slot until the latch mechanism engages.\u003c\/li\u003e\n\u003cli\u003eUtilize shielded, twisted-pair cabling for all serial connections. Ensure the cable shield is terminated at the chassis ground point to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eObserve the maximum cable length restrictions: 15 m for RS-232C and 1200 m for RS-485 to ensure signal stability.\u003c\/li\u003e\n\u003cli\u003eVerify that pin-outs on the field cable connector match the module's terminal assignment documentation precisely to avoid electrical shorts.\u003c\/li\u003e\n\u003cli\u003eUpon installation, monitor the front-panel status LEDs. A steady indication confirms that the module has passed self-diagnostics and has established a handshake with the host RIO bus.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":42870825844826,"sku":"ACM11","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/133_93af8454-bb78-491c-9cd5-c76f530e9be0.jpg?v=1772589031","url":"https:\/\/www.spareoil.com\/products\/yokogawa-acm11-s2-subsystem-communication-module-datasheet","provider":"SpareOil Automation","version":"1.0","type":"link"}