FBM224 Product Specification Sheet

1. Product Overview

FBM224 (Part Number: P0926GG) is a 4-channel isolated Modbus RTU communication interface module for Foxboro Evo™ and I/A Series DCS systems. It acts as a Modbus master, connecting the control processor (FCP280/FCP270/CP60) to Modbus slave devices such as PLCs, variable frequency drives, and smart instruments. Each channel supports RS-232/RS-422/RS-485, with 600 VAC one-minute galvanic isolation and optional port redundancy (1&2, 3&4)paresource.schneider-electric.com. Hot-swappable and housed in a rugged aluminum casing, it suits long-term stable operation in harsh environments like chemical, petrochemical, and power plantsparesource.schneider-electric.com

2. Key Specifications

Communication Protocol: Modbus RTU (master), supporting standard function codes 01–16; 8-bit character support

Ports & Interfaces: 4 independent serial channels; each configurable for RS-232, RS-422, or RS-485paresource.schneider-electric.com

Baud Rate: 300–115,200 bps, software configurable

Device Capacity: Up to 64 Modbus slaves per module; up to 2000 DCI data points

Address Range: 1–247 (slave address)

Scan Rate: 0.5–255 seconds, configurable

Data Types: 2/4-byte signed/unsigned integers, 4-byte IEEE floating-point, binary; byte/bit swap selectable

Isolation: 600 VAC for 1 minute (channel-to-earth)paresource.schneider-electric.com

Power Supply: 24 VDC (+5%/–10%); 11–32 VDC range; max power consumption ≤7 W

Environmental: Operating –20°C ~ +60°C; Storage –40°C ~ +85°C; Humidity 5%–95% non-condensing; ISA S71.04 Class G3paresource.schneider-electric.com

Certifications: CE, UL, ATEX, CSA; compliant with EMC directives; suitable for Class 1 Div 2 / Zone 2 hazardous areas

Redundancy: Ports 1&2 / 3&4 configurable as redundant logical ports for dual-port devices

Hot Swap: Module replacement without system shutdown, minimizing downtime

Physical: 102 × 45 × 104 mm; weight ~0.25 kg; rugged metal housing

Termination & Cabling

Termination Assembly (TA): DIP-switch selectable 120Ω termination resistors per port; compression terminals

Connection Cables: Shielded twisted-pair for RS-422/RS-485; standard serial cables for RS-232

Termination Resistor: 120Ω (per segment, via TA)

5. Applications

Ideal for multi-device Modbus RTU networking in large process industries: chemical plants, refineries, power stations, and pharmaceuticals. It integrates third-party Modbus slaves into Foxboro DCS, supporting new project deployment and legacy system upgrades. Redundant port configurations enhance reliability for critical loops; hazardous-area certification suits oil/gas and chemical applications.

[1] Foxboro (Schneider Electric) is a global leader in process automation, with products widely used in power, oil, gas, and chemical industries.

[2] FBM224 (P0926GG) is a standard 4-channel Modbus RTU module, distinct from PROFIBUS modules (FBM222/FBM223) and FF modules (FBM221).

[3] Supports hot swap and channel isolation, easing installation, maintenance, and fault replacementparesource.schneider-electric.com.

[4] Communication and environmental specs align with Foxboro FBM series standards, ensuring system compatibilityparesource.schneider-electric.com.

[5] Widely available from automation suppliers for DCS integration and Modbus networking projects.