Model: FCP280 (Part Number: RH924YA) | Brand: Foxboro (Schneider Electric) | Type: I/A Series Field Control Processor | Function: Serves as the core controller of Foxboro I/A Series DCS systems, responsible for real-time data acquisition, complex control logic execution (including regulation, logic, timing and sequence control), multi-protocol communication, alarm detection and system fault diagnosis. It supports redundant fault-tolerant configuration and self-hosted mode, connects up to 128 200-series FBM modules or a combination of 100-series and 200-series FBM modules (no more than 64 100-series FBMs), and can connect to the MESH control network via standard fiber optic or 100 Mbps Ethernet copper cables, providing reliable control support for harsh industrial environments.Model: FEM100 (Part Number: P0973ZA) | Brand: Foxboro (Schneider Electric) | Type: I/A Series Fieldbus Expansion Module | Function: Serves as a fieldbus expansion module for Foxboro I/A Series DCS systems, responsible for extending fieldbus communication capacity, connecting multiple FBM (Fieldbus Module) devices to the central controller, and realizing stable data transmission between distributed I/O modules and the control system. It supports multi-rate fieldbus communication, is compatible with 100-series and 200-series FBM modules, and provides reliable expansion support for harsh industrial control environments. 1. Technical Specifications The FCP280 (Part Number: RH924YA) is a high-performance field control processor for Foxboro I/A Series DCS systems, with a high-speed processor that supports fast response, and the control cycle of PID and other algorithms is less than 100ms. It features a rugged extruded aluminum housing, complying with ISA standard S71.04 and providing up to Class G3 (harsh environment) protection, and is CE certified for on-site installation in enclosures. The FCP280 supports hot-swap replacement without power interruption, with a front-panel LCD display for real-time monitoring of letter bugs, real-time roles and status, supplemented by LED indicators for network activity, power status and module operation status. For communication requirements: it can connect to the MESH control network via standard fiber optic or 100 Mbps Ethernet copper cables; fiber optic cables use multi-mode graded-index glass fiber (62.5/125 µm core/cladding, 0.275 NA) with ST-type connectors, and the maximum allowable signal loss is 1 dB/km at 1300 nm and 3.6 dB/km at 850 nm. It is configured with enhanced memory (32MB SDRAM and 64MB flash memory) to support large-scale control programs, historical data storage and online image upgrade (OLUG) functions, and operates on a 24V DC redundant power supply with a single module power consumption ≤10W, suitable for standard baseplate installation.The FEM100 (Part Number: P0973ZA) is a high-reliability fieldbus expansion module for Foxboro I/A Series DCS systems, equipped with a high-performance industrial processor that ensures stable data processing and transmission. It features a rugged extruded aluminum housing, complying with ISA standard S71.04 and providing up to Class G3 (harsh environment) protection, suitable for operation in high-dust, high-humidity and strong electromagnetic interference industrial sites. The FEM100 supports hot-swap replacement without power interruption, with multiple front-panel LED indicators for real-time monitoring of network activity, power status and module operation status. For communication requirements: it supports 2 Mbps and 268 Kbps fieldbus signal rates, compatible with both 100-series and 200-series FBM modules, and can connect up to 32 FBM modules per module. It is configured with 8MB SDRAM and 16MB flash memory, supporting stable data storage and communication protocol operation, and operates on a 24V DC redundant power supply with a single module power consumption ≤6W, suitable for standard baseplate installation.