Product Overview

The Foxboro FBM230 (P0926GU) functions as a high-performance Modbus Master Distributed Device Interface (DDI) for the I/A Series and Foxboro Evo DCS. This 100% Brand New original module bridges the gap between the DCS and third-party devices such as PLCs, motor control centers, and smart transmitters. Equipped with four versatile ports, the FBM230 manages both serial (RS-232/422/485) and Ethernet-based Modbus communication, providing a centralized point for complex data integration while maintaining strict industrial isolation standards.

Technical Specifications

• Module Type: Modbus Master (Serial and TCP/IP)

• Part Number: P0926GU (FBM230)

• Port Configuration: Four independent ports

• Physical Interfaces: RS-232, RS-422, or RS-485 (Configurable per port)

• Supported Protocols: Modbus RTU, Modbus ASCII, Modbus/TCP

• Data Formats: Big Endian and Little Endian (Software configurable)

• Isolation: Withstands 600 V AC galvanic isolation

• Internal Memory: 16 MB SDRAM, 32 MB Flash

• Power Input: 24 V DC (Redundancy supported)

• Power Consumption: 12 W to 14 W

• Operating Temperature: 0 to +60 °C (32 to 140 °F)

• Shipping Weight: 3.0 kg

Engineering Advantages

• Multi-Protocol Versatility: The P0926GU (FBM230) eliminates the need for separate serial and Ethernet gateways. By supporting Modbus/TCP, RTU, and ASCII simultaneously across four ports, it consolidates diverse third-party device data into a single Fieldbus Module, reducing hardware overhead.

• Flexible Physical Layer Mapping: Engineers can independently configure each of the four ports for RS-232, RS-422, or RS-485 standards. This adaptability solves the common industrial pain point of mismatched physical interfaces when integrating legacy field hardware with modern DCS environments.

• Enhanced Data Integrity: The module accepts multiple data endianness formats (Big/Little Endian). This configurable software logic ensures seamless communication with different PLC manufacturers without requiring complex custom scripts or external data converters.

• Robust Fault Tolerance: Built for mission-critical connectivity, the FBM230 supports redundant Fieldbus communication. It maintains active data links even during a network path failure, ensuring the DCS never loses visibility of integrated third-party systems.

• Galvanic Protection: Integrated 600 V AC isolation shields the internal logic from field-side electrical noise and ground loops. This protection is essential for maintaining reliable communication in high-EMI zones like motor control centers or power substations.

FAQs

• Does the FBM230 support both Modbus Master and Slave modes?The P0926GU is specifically a Modbus Master driver. It initiates requests to Modbus Slave/Server devices to retrieve data or send control commands.

• Can I mix Serial and Ethernet protocols on the same module?Yes. Each port operates independently. You can configure one port for Modbus/TCP via Ethernet and another for Modbus RTU via RS-485 to suit your site’s specific wiring architecture.

• Is the FBM230 compatible with older I/A Series baseplates?The module installs into standard FBM baseplates. However, you must verify that your software environment (I/A Series or Foxboro Evo) includes the necessary Modbus DDI driver licenses for proper initialization.