Foxboro FBM214B P0927AH: HART Input Module Specs, Models & Availability

Technical Dossier

Product Details And Specifications

Foxboro FBM Series: Comprehensive Module Range and Technical Overview

The Foxboro FBM (Field Bus Module) series is the I/O backbone of the Foxboro I/A Series Distributed Control System (I/A Series DCS), one of the most widely deployed process automation platforms in global heavy industry. FBM modules are installed across petrochemical complexes, nuclear power stations, offshore oil platforms, LNG terminals, and continuous-process refineries. The I/A Series DCS — and its successor, the Foxboro Evo platform — relies on FBM modules to interface field instrumentation with the control processor network via the Nodebus or Fieldbus communication infrastructure. The FBM214B P0927AH specifically handles HART (Highway Addressable Remote Transducer) protocol inputs, enabling digital communication with smart field devices over standard 4–20 mA analog wiring. This capability is critical in facilities that require device diagnostics, calibration, and configuration without loop interruption.

The Evolution of FBM Series Architecture

The FBM series was introduced alongside the Foxboro I/A Series DCS in the mid-1980s, designed as a modular, distributed I/O architecture that could be mounted in the field rather than centralized in a control room. Early-generation modules (FBM01–FBM10) handled basic analog and discrete I/O over the Nodebus, a proprietary 10 Mbps token-passing network. These modules used parallel backplane connectors and were housed in FBM Enclosures (FBE) or Termination Assemblies (FTA).

Through the 1990s, the FBM100 sub-series introduced enhanced signal conditioning, redundancy support, and expanded channel counts. The FBM200 sub-series — to which the FBM214B belongs — extended the architecture to support HART protocol, Foundation Fieldbus (FF), and PROFIBUS PA, reflecting the industry shift toward smart instrumentation. The FBM214B specifically implements HART multi-drop and point-to-point input scanning, supporting up to 16 HART channels per module with concurrent analog and digital data acquisition.

With the launch of the Foxboro Evo platform (circa 2014), Schneider Electric (which acquired Foxboro in 2014) introduced the FBM230 and FBM240 sub-series with enhanced cybersecurity, faster scan rates, and IEC 61511 SIL 2 certification. Legacy FBM200-series modules remain in active service at thousands of sites globally and are supported under Schneider Electric's long-term spare parts program, though many variants are now classified as mature or end-of-active-production.

FBM Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced modules within the Foxboro FBM series. Modules are categorized by primary function.

HART & Analog Input Modules

• FBM214B P0927AH: 16-channel HART input module; concurrent analog (4–20 mA) and HART digital acquisition
• FBM214 P0926GU: 16-channel HART input, earlier hardware revision; compatible with same FTA wiring base
• FBM215 P0926GV: 16-channel HART output module; 4–20 mA with HART pass-through for smart valve positioners
• FBM201 P0926GS: 8-channel analog input, 4–20 mA, non-HART; standard process variable acquisition
• FBM202 P0926GT: 8-channel analog output, 4–20 mA; used for control valve and actuator command signals
• FBM203 P0926GW: 16-channel analog input, 4–20 mA; high-density field I/O for large loop counts

Discrete I/O Modules

• FBM204 P0926GX: 32-channel discrete input, 24 VDC; motor status, valve limit switches, and interlock inputs
• FBM205 P0926GY: 32-channel discrete output, 24 VDC; solenoid valves, relay coils, and indicator lamps
• FBM206 P0926GZ: 16-channel discrete input/output mixed; used in combined status/command applications
• FBM207 P0926HA: 8-channel relay output; dry-contact switching for high-voltage field devices

Temperature & Thermocouple Input Modules

• FBM208 P0926HB: 16-channel thermocouple/mV input; supports J, K, T, E, R, S, B type thermocouples with CJC
• FBM209 P0926HC: 8-channel RTD input; supports Pt100, Pt200, Ni120 in 2-, 3-, and 4-wire configurations

Pulse & Frequency Input Modules

• FBM210 P0926HD: 4-channel pulse/frequency input; turbine flow meters, magnetic pickups, and encoder signals
• FBM211 P0926HE: 4-channel counter/totalizer input; batch counting and flow totalization applications

Fieldbus Communication Modules

• FBM220 P0926HK: Foundation Fieldbus H1 interface; supports up to 16 FF devices per segment
• FBM221 P0926HL: PROFIBUS PA interface; used in Siemens-compatible field device integration projects
• FBM230 P0926HM: Enhanced HART I/O module, Evo-generation; SIL 2 rated, cybersecurity hardened

Power & Redundancy Modules

• FBM240 P0926HN: Redundant power supply module for FBM enclosures; hot-swap capable, 24 VDC rail
• FBM241 P0926HP: Nodebus repeater/extender; extends FBM network segment beyond standard 300 m limit

Sourcing Hard-to-Find & Obsolete FBM Series Parts

A significant portion of the installed FBM200 sub-series base — including the FBM214B P0927AH — has transitioned to mature or end-of-active-production status. Schneider Electric no longer manufactures certain hardware revisions, and lead times through OEM channels can extend to 26–52 weeks for low-volume variants. DriveKNMS maintains a dedicated inventory of tested FBM modules sourced from decommissioned DCS systems, controlled plant shutdowns, and authorized surplus channels.

For facilities operating I/A Series DCS platforms with 10–30 year installation histories, DriveKNMS provides lifecycle extension support including: direct module replacement with matching hardware revision, cross-reference to compatible successor models (e.g., FBM230 as a functional replacement for FBM214B in Evo-compatible enclosures), and multi-year blanket supply agreements for maintenance departments managing large FBM populations. All sourced modules are accompanied by full traceability documentation.

Quality Control for the FBM Series Range

FBM modules use a proprietary backplane bus protocol and internal ASIC-based signal conditioning that requires module-level functional testing rather than simple continuity checks. DriveKNMS applies the following test protocol to all FBM series modules prior to shipment:

• Backplane communication verification: Each module is seated in a live I/A Series test rack and polled via Nodebus to confirm address recognition and data frame integrity.
• Channel-level signal injection: For analog input modules (including FBM214B), all 16 channels are stimulated with calibrated 4–20 mA signals and HART command sets (CMD 0, CMD 1, CMD 3) to verify analog accuracy (±0.1% FS) and HART response.
• HART protocol stack validation: HART master polling is executed to confirm device descriptor retrieval, PV/SV/TV/QV data integrity, and burst mode operation.
• Firmware revision audit: Module firmware version is read and logged. Modules with known firmware defects (per Foxboro Field Bulletins) are flagged and excluded from shipment.
• Thermal burn-in: Modules are operated at 40°C ambient for 48 hours to screen for early-life component failures prior to release.

For procurement inquiries, technical cross-references, or lifecycle support contracts for Foxboro FBM series modules:

• Email: sale@driveknms.com
• WhatsApp: +86 18359293191
• Web: driveknms.com

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.