Product Overview

The Foxboro FBM232 (Part Number P0926GW) is a high-capacity Ethernet Communication Module designed for the I/A Series Distributed Control System (DCS). This module functions as a Fieldbus Module (FBM) that provides a gateway between the Foxboro control station and external Ethernet-linked devices. It is engineered to facilitate massive data exchange, allowing the DCS to integrate third-party PLCs, motor control centers, and smart instrumentation into a unified control architecture.

By utilizing the Distributed Control Interface (DCI), the FBM232 manages the translation of external device protocols into native Foxboro data types. This ensures that process variables from diverse hardware are accurately represented in operator displays, alarm management systems, and plant-wide historian databases.

Technical Specifications

• Manufacturer: Foxboro (Schneider Electric)

• Model Number: FBM232

• Part Number: P0926GW

• Module Type: Ethernet Communication Interface

• Device Capacity: Supports up to 64 individual Ethernet devices

• Connection Limit: Up to 2,000 Distributed Control Interface (DCI) connections

• Data Update Rate: Configurable as fast as 500 ms

• Data Types Supported:

• Analog I/O (Integer or IEEE Single-Precision Floating Point)

• Single Digital I/O

• Packed Digital I/O (Up to 32 points per connection)

• Operating Environment: Class G3 Harsh Environment (ISA Standard S71.04)

• Weight: 0.3 kg

• Dimensions: 4.3 x 11.0 x 11.5 cm

Core Technical Characteristics

• Scalable Data Integration: The FBM232 is capable of managing a massive I/O count, supporting up to 2,000 analog values or as many as 64,000 digital points (when using packed digital groups). This scalability allows it to serve as a central communication hub for large plant sections.

• Protocol Flexibility: Data handling is determined by the specific software driver loaded onto the module. This flexibility enables the FBM232 to interface with various industrial Ethernet protocols, performing real-time conversion between external registers and DCI data objects.

• Bidirectional Communication: The module supports both Read and Write operations. It collects field data for monitoring and operator visualization while simultaneously allowing the DCS to send control setpoints and commands back to the field devices.

• Ruggedized Physical Protection: The internal circuitry is housed in a robust extruded aluminum casing, providing excellent heat dissipation and shielding against electromagnetic interference (EMI).

• High-Speed Processing: With a minimum access frequency of 500ms, the FBM232 ensures that time-critical process data is available to the control processor with minimal latency, supporting fast-acting control loops.

• Environmental Durability: When installed in appropriate Foxboro enclosures, the P0926GW is rated for G3-level harsh environments, protecting against corrosive gases and high humidity typical in chemical and wastewater facilities.

Primary Applications

The Foxboro FBM232 P0926GW is an essential interface for:

• Third-Party PLC Integration: Connecting Allen-Bradley, Siemens, or Modicon controllers to a centralized Foxboro DCS.

• Substation Monitoring: Interfacing with Ethernet-based protective relays and power meters.

• Warehouse Automation: Managing high-density digital I/O from sorting systems and conveyors.

• Process Skids: Integrating specialized OEM equipment (e.g., compressors or centrifuges) into the main plant control scheme.