May 26, 2026

Foxboro FCM100ET Product Description

The Foxboro FCM100ET is a highly reliable multi-protocol field communication module for the Foxboro I/A Series DCS (Schneider Electric EcoStruxure). It is a ruggedized, extended-temperature variant of the FCM100E/EE, optimized for extreme cold-to-hot industrial environments and mission-critical process control. Built around a compact, heavy-duty aluminum enclosure with conformal coating, it delivers enhanced thermal stability, galvanic isolation, and EMI immunity. The module serves as a robust gateway between the DCS MESH network and multi-vendor smart field devices, ensuring deterministic, low-latency data exchange and comprehensive device management in harsh or hazardous areas.

Description

Foxboro FCM100ET Product Description

Product Overview

Basic Information

Manufacturer: Foxboro (Invensys, now Schneider Electric)
Model: FCM100ET
Product Type: Extended-Temperature Multi-Protocol Field Communication Module
Applicable System: Foxboro I/A Series DCS (compatible with CP60, CP80, CP90, CP100 controllers)
Mounting Style: Plug-in to I/A Series FBM200/240 communication chassis; 19-inch rack-mountable via chassis
Protection Rating: IP20 (cabinet installation); field-side galvanic isolation for hazardous area compatibility
Construction: Die-cast aluminum housing with conformal coating; isolated field and logic circuits
Certifications: CE, UL, CSA, ATEX, IECEx; EN 50121 (railway EMC); IEC 61508 SIL 2 capable
Operating Temperature: -25°C to +70°C (extended range)
MTBF: ≥130,000 hours
Weight: Approximately 1.02 kg
Dimensions: Compact form factor for high-density cabinet mounting
Country of Origin: United States

Function and Positioning

The FCM100ET functions as a high-stability communication hub and device management gateway within the I/A Series DCS, specifically positioned for extreme-temperature and high-noise process environments. Its core role is to bridge the DCS MESH control network and smart field instruments, supporting real-time data acquisition, control output, and asset management. It translates and routes data across HART, Foundation Fieldbus H1, and Modbus RTU protocols, acting as a Link Active Scheduler (LAS) for FF segments. The module supports 1:1 hot standby redundancy with seamless auto-failover and hot-swap capability, enabling maintenance without process shutdown. It also provides advanced diagnostics, predictive maintenance data, and remote configuration for field devices, reducing downtime and enhancing operational visibility.

Core Performance Parameters

Communication Processor: 32-bit industrial RISC controller with enhanced thermal compensation and noise filtering
Supported Protocols: HART 5–7 (multi-point/single-point), Foundation Fieldbus H1 (31.25 kbps), Modbus RTU (master/slave)
Physical Interfaces: 2 isolated HART channels, 1 FF H1 port, 1 RS-485 Modbus port, 100 Mbps MESH Ethernet interface
Segment Capacity: Up to 4 FF segments (16 devices/segment); up to 32 HART devices in multi-point mode
Redundancy: 1:1 module redundancy; auto-failover ≤40 ms; redundant MESH network support
Isolation: 2500 VDC galvanic isolation between field channels and backplane; channel-to-channel isolation
Environmental Ratings: Operating temperature -25°C to +70°C; G3 harsh environment compliant (vibration 5–200 Hz, 0.15 g; resistant to H2S, SO2, salt mist)
Power Supply: +5 VDC, ±12 VDC (backplane-powered); power consumption ≤7.5 W
Diagnostics: Dual-color LEDs for power, link, and fault status; remote monitoring, event logging, and firmware updates via Foxboro System Manager
Safety: IEC 61508 SIL 2 capable; suitable for high-risk process zones

General Adaptable Accessories

DCS Chassis: I/A Series FBM200/240 4/8/16-slot communication chassis; redundant chassis for 1:1 FCM100ET deployment
Communication Cables: HART shielded twisted pair, FF H1 dedicated cable, RS-485 Modbus shielded cable, MESH CAT5e Ethernet cable
Interface Adapters: FF H1 terminal blocks, HART signal conditioners, RS-485/RS-232 converters, protocol gateways for third-party devices
Redundancy Accessories: Redundant backplane modules, failover synchronization cables, MESH redundancy switches
Power Supply Units: I/A Series-compatible 5 VDC/±12 VDC industrial power supplies; redundant power units for fault tolerance
Mounting & Protection: 19-inch rack brackets, anti-vibration kits, ESD protection modules, hazardous area barrier modules, conformal coating kits

Applicable Equipment and Fields

The FCM100ET is designed for large-scale process industries with extreme temperature, high noise, or hazardous area requirements using Foxboro I/A Series DCS. Key sectors include oil and gas (upstream, refining, petrochemicals), thermal and nuclear power generation, chemical manufacturing, pulp and paper, water and wastewater treatment, pharmaceuticals, metals and mining, and railway-related process systems. It connects HART/FF/Modbus-enabled transmitters, control valves, analyzers, and smart actuators to the DCS, enabling reliable real-time monitoring, advanced control, and predictive maintenance in cold storage plants, outdoor installations, and high-temperature production areas。

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