{"product_id":"acm12-s1-communication-module-yokogawa","title":"ACM12 S1  | Communication Module | Yokogawa","description":"\u003ch2\u003eYokogawa ACM12 S1 Communication Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for serial data communication in Yokogawa control networks, the \u003cstrong\u003eYokogawa ACM12 S1\u003c\/strong\u003e (\u003cstrong\u003eACM12\u003c\/strong\u003e Communication Module) provides direct physical\/electrical execution of RS-422 and RS-485 data exchange. The module supports one communication port with selectable point-to-point or multipoint topology, half-duplex transmission, asynchronous start-stop synchronization, and communication rates up to 19200 bps.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe supplied documentation identifies the module as \u003cstrong\u003eACM12 S1\u003c\/strong\u003e. No official suffix decomposition or option matrix is provided in the source material; therefore, no further suffix interpretation is included.\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\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\u003c\/td\u003e\n\u003ctd\u003eACM12 S1\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRS-422 \/ RS-485 Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Port\u003c\/td\u003e\n\u003ctd\u003e1 Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eRS-422 or RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003ePoint-to-Point (RS-422), Multipoint (RS-485)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Mode\u003c\/td\u003e\n\u003ctd\u003eHalf-duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynchronization\u003c\/td\u003e\n\u003ctd\u003eStart-stop synchronization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Speed\u003c\/td\u003e\n\u003ctd\u003e1200 \/ 2400 \/ 4800 \/ 9600 \/ 19200 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Code\u003c\/td\u003e\n\u003ctd\u003eASCII \/ Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharacter Length\u003c\/td\u003e\n\u003ctd\u003e7 bit or 8 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStop Bit Length\u003c\/td\u003e\n\u003ctd\u003e1 bit or 2 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParity Check\u003c\/td\u003e\n\u003ctd\u003eNone \/ Odd \/ Even\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Reception After Transmission\u003c\/td\u003e\n\u003ctd\u003e1 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Transmission Distance\u003c\/td\u003e\n\u003ctd\u003e1200 m total cable length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Method\u003c\/td\u003e\n\u003ctd\u003eCommunication Module Nest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Compatibility\u003c\/td\u003e\n\u003ctd\u003eCannot be combined with ACF11; ACM11 can be combined with ACM12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Requirement\u003c\/td\u003e\n\u003ctd\u003e3-pair shielded cable or AKB161 connection cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Method\u003c\/td\u003e\n\u003ctd\u003e6-pole terminal, M4 screw connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1.0 A @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApproximately 215 mm x 46 mm x 160 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.80 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation and DCS Communication Characteristics\u003c\/h3\u003e\n\u003cp\u003eWithin process control architectures, the ACM12 functions as a serial communication interface between host control equipment and external field devices. The module supports ASCII and binary transmission formats while permitting configuration of parity, character length, and stop-bit parameters to match connected equipment requirements.\u003c\/p\u003e\n\u003cp\u003eFor RS-485 multipoint installations, shield continuity, grounding practice, and line termination must be coordinated across the communication segment to maintain signal integrity over cable distances up to 1200 m. The module provides configurable communication parameters suitable for integration with serial instruments, analyzers, controllers, and legacy DCS subsystems.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the ACM12 support both RS-422 and RS-485 communication standards?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The module supports one selectable communication port operating as either RS-422 or RS-485.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the ACM12 operate in full-duplex mode?\u003c\/strong\u003e\u003cbr\u003eA: No. The supplied specification identifies half-duplex communication mode only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are there installation restrictions with other communication modules?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The documentation states that ACM12 cannot be combined with ACF11. ACM11 can be combined with ACM12 within the specified installation arrangement.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module only in the designated Communication Module Nest location.\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with adjacent modules before installation.\u003c\/li\u003e\n\u003cli\u003eUse shielded communication cable as specified by Yokogawa documentation.\u003c\/li\u003e\n\u003cli\u003eRoute serial communication wiring separately from high-voltage power conductors to reduce electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eBond cable shields according to site grounding standards and system design requirements.\u003c\/li\u003e\n\u003cli\u003eTighten M4 terminal connections to the manufacturer's recommended torque specification.\u003c\/li\u003e\n\u003cli\u003eConfirm baud rate, parity, character length, and stop-bit settings are identical at both communication endpoints before commissioning.\u003c\/li\u003e\n\u003cli\u003eFor RS-485 multidrop networks, apply appropriate network termination and address configuration according to the connected device requirements.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44208955883608,"sku":"ACM12 S1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/ACM12S1-3.jpg?v=1780967445","url":"https:\/\/www.industriaxplc.com\/products\/acm12-s1-communication-module-yokogawa","provider":"IndustriaX Limited","version":"1.0","type":"link"}