Product Description

The ACG10S-F2123 S4 is a high-reliability Communication Gateway Unit (CGU) engineered for the Yokogawa Electric Corporation CENTUM CS and CENTUM CS 3000 Distributed Control Systems (DCS).

This gateway unit serves as a communication bridge between the proprietary V net control network and external automation or monitoring subsystems. It enables deterministic, real-time data exchange between DCS control layers and third-party devices such as PLCs, process analyzers, and supervisory monitoring platforms.

By implementing dual-redundant V net communication paths, the ACG10S-F2123 S4 eliminates single points of failure in the network backbone. This makes the module especially suitable for large-scale industrial plants where communication continuity is directly linked to process safety and operational reliability.

The module also supports higher-layer protocol bridging, allowing Ethernet TCP/IP and frame-mode serial communications to coexist with legacy V net architectures.

Technical Specifications

Network Integration and Performance

The ACG10S-F2123 S4 acts as a secure data conduit between the real-time control layer and the information management layer.

Key capabilities include:

• Support for 4000+ data tags (depending on firmware revision)

• Real-time packet conversion between Frame Mode and V net protocol data units

• Transparent tag mapping to Human Interface Stations (HIS) for operator visualization

This architecture allows operators to monitor remote process variables as if they were native DCS tags within the control system database.

FAQ

How does this module handle network failure?
The ACG10S-F2123 S4 includes dual-redundant V net interfaces. If one communication path fails due to cable damage or transceiver failure, the module automatically switches to the backup path without data loss or operator disruption.

What does the “S4” suffix represent?
The “S4” suffix indicates the fourth-generation hardware revision of the ACG10S series, featuring improved power efficiency, enhanced component durability, and better long-term operational stability compared to earlier S1 and S2 revisions.

Can I use this for Vnet/IP communication?
No. The ACG10S series is designed for legacy coaxial V net networks. For modern CENTUM VP systems using Vnet/IP, gateway units from newer series (such as AWG-type gateways) are required.