Yokogawa ACM11 | Sealed S2 RS-485 Communication Module

Yokogawa ACM11 RS-232C Subsystem Communication Module S2

The ACM11 (Model: ACM11) is a high-performance subsystem communication module designed for the Yokogawa CENTUM CS 3000 and CENTUM VP Distributed Control System (DCS) environments. This module functions as a critical bridge between the Field Control Station (FCS) and external subsystems such as PLCs, sequencers, and specialized analyzers. The ACM11 (Part Number: ACM11) facilitates seamless data exchange by mapping subsystem data into the PI/O image area, which is then accessed by the FCS via the RIO bus.

Engineered for industrial reliability, the ACM11 (Module: ACM11) features galvanic isolation and advanced error detection to ensure data integrity in electronically noisy plant environments. By offloading serial communication tasks—including protocol handling for RS-232C, RS-422, and RS-485—it preserves the main processor's CPU efficiency. This module is an essential component for integrating third-party equipment into a unified Yokogawa control architecture, providing the deterministic connectivity required for petrochemical, power, and water treatment applications.

Detailed Technical Specifications

The ACM11 (ACM11) is built to support diverse serial communication standards within a ruggedized DCS rack.