Product Core Brief
- Model: FBM230 (Associated Part: RH926GU / P0926GU)
- Brand: FOXBORO (Invensys / Schneider Electric)
- Series: I/A Series DCS / Field Device System Integrator (FDSI)
- Core Function: Provides a serial interface between single-port field I/O devices and the Foxboro DCS system.
- Product Type: Serial Communication Module / Field Device Integrator
- Key Specs: 4 Ports | RS-232/422/485 Configurable | Max 64 Devices | 24 VDC
- Condition: New Original / New Surplus
FOXBORO FBM230
Product Introduction
FOXBORO is a versatile Field Device System Integrator (FDSI) module designed for the I/A Series distributed control system. It acts as a critical communication bridge, providing a serial interface that connects single-port field I/O devices directly to the Foxboro DCS control database.
This industrial automation unit features four independent communication ports that can be individually configured via software as RS-232, RS-422, or RS-485 interfaces. This high level of flexibility allows a single module to seamlessly integrate a wide variety of similar but non-identical third-party field devices, such as sensors, PLCs, and RTUs, into the central control network.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Field Device System Integrator (FDSI) |
| System Compatibility | Foxboro I/A Series / EcoStruxure Foxboro DCS |
| Communication Ports | 4 Independent Serial Ports |
| Interface Standards | RS-232, RS-422, RS-485 (Software Configurable) |
| Device Capacity | Up to 64 Devices (via RS-485) |
| DCI Connections | Up to 2000 Distributed Control Interface Blocks |
| Operating Voltage | 24 VDC (Redundant) |
| Power Consumption | 7W (Max) |
| Operating Temperature | -20°C to +70°C |
| Environmental Rating | G3 Class (Harsh Environment) |
Quality Control Process
We validate every FOXBORO before shipment to ensure operational readiness:
- Visual & Physical Inspection: Backplane connectors, DB-25 serial ports, and front-panel LEDs are checked for pin straightness, oxidation, or mechanical stress.
- Functional Test: Modules are powered up in a test rack to verify LED status indicators and backplane communication handshake.
- Signal Verification: Each of the 4 ports is tested for correct serial data transmission and reception, verifying baud rates and protocol handshaking.
- Cleaning & Packaging: Units are cleaned, anti-static shielded, and desiccant-packed to prevent moisture damage during transit.
Replacement Pitfall Guide
❗ Port Configuration Matching: The four ports on the are software-configurable. Ensure the new module is loaded with the correct I/O software driver and configured for the exact serial protocol (RS-232, 422, or 485) required by your field devices.
❗ Device Capacity Limits: While RS-485 supports up to 64 devices, the actual number of connected devices depends on the communication performance and polling speed. Overloading the bus can cause communication timeouts.
❗ Driver Compatibility: The is a universal hardware module that relies on downloaded software drivers to recognize specific third-party protocols (e.g., Modbus). Verify that the required protocol driver is available and compatible with your current DCS software version.
❗ Hot-Swap Procedure: Although hot-swappable, always verify that the module is safely isolated in the DCS software before removal to prevent transient communication faults on the serial bus.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor | Compatibility Level | Migration Notes |
|---|---|---|---|
| P0926GU | Direct | and P0926GU are cross-references for the same module | |
| P0926GJ | Conditional | P0926GJ is a dual-port RS-232/422 variant; verify port count | |
| P0926GW | Needs Adaptation | P0926GW is an Ethernet interface variant; different protocol |
- Lead Time: Typically 1-3 weeks for surplus stock; 4-8 weeks for new factory orders.
- Warranty: Standard 12-month functional warranty.
