Product Overview

The Foxboro FBM222 (Part Number P0926TL) is a high-density communication interface designed to integrate PROFIBUS-DP and PROFIBUS-PA field devices into the Foxboro Evo and I/A Series Distributed Control Systems (DCS). This module functions as a master gateway, allowing the DCS to command and monitor a vast array of slave devices, including variable frequency drives (VFDs), motor starters, smart sensors, and remote I/O blocks.

By adhering to IEC 61158 standards, the FBM222 ensures high-speed, deterministic data exchange across the industrial network. It is specifically engineered for mission-critical environments where high availability is required, supporting full hardware redundancy and hot-swappable replacement to eliminate process interruptions.

Technical Specifications

• Manufacturer: Foxboro (Schneider Electric)

• Model Number: FBM222

• Part Number: P0926TL

• Protocol Support: PROFIBUS-DP (V0/V1) and PROFIBUS-PA

• Compliance: IEC 61158 Part 3

• Device Capacity: Up to 125 slave devices per port

• Data Throughput: Supports maximum 244-byte data telegrams per device

• Isolation: Dual galvanically isolated communication channels

• Hazardous Area Rating: Class 1, Division 2; Zone 2 locations

• Mounting compatibility: Supports FBM223 Termination Assemblies (TA) for seamless upgrades

• Weight: 0.3 kg

• Dimensions: 4.5 x 11.0 x 11.5 cm

Core Technical Characteristics

• Dual-Protocol Integration: The FBM222 bridges both PROFIBUS-DP for high-speed discrete automation and PROFIBUS-PA for process-level instrumentation. This allows a single Foxboro control station to manage diverse field assets through a unified interface.

• Fault-Tolerant Architecture: To maximize plant uptime, the module supports fully redundant configurations. It features hot-swappable capabilities and redundant communication paths to fault-tolerant control processors, ensuring the control loop remains active even during a module failure.

• Advanced Master Functionality: The module operates as a Class 1 Master for cyclic data exchange and supports Class 2 Master functions for acyclic messaging. This dual-class support enables simultaneous process control and device parameterization (asset management).

• Live System Scalability: Users can add, remove, or modify field devices on the PROFIBUS network without shutting down the control station or impacting ongoing production cycles.

• Transparent Data Propagation: Device values and health status are natively mapped to I/A Series control blocks. The module provides selectable status parameters and read-back verification for all output data to ensure closed-loop integrity.

• Simplified Migration Path: The FBM222 is designed to be backwards compatible with FBM223 Termination Assemblies. This allows facilities to upgrade their communication hardware while retaining existing field wiring and cabling infrastructure.

Primary Applications

The Foxboro FBM222 P0926TL is a critical interface for:

• Motor Control Centers (MCC): High-speed cyclic control of PROFIBUS-enabled drives and starters.

• Smart Instrumentation: Collecting diagnostic and process data from PROFIBUS-PA pressure and temperature transmitters.

• Remote I/O Networking: Interfacing distributed I/O stations with the central Foxboro Evo processor.

• Asset Management: Remote configuration of smart field devices using FDT/DTM technology via the DCS.