Foxboro

The Foxboro P0400YG, designated as the FBM06, is a mixed-signal interface module for the I/A Series Distributed Control System (DCS). It combines four configurable pulse input channels and four 0–20 mA DC analog output channels on a single Fieldbus Module, enabling precise measurement of flow, speed, and totalization while simultaneously driving analog actuators and positioners . The module accepts pulse inputs from vortex and turbine meters, solid-state or electro-mechanical contacts, and other sensors with similar pulse outputs. Each output channel drives an external load with a 0–20 mA signal, performing the signal conversion required to interface field sensors and actuators to the redundant Fieldbus . As a main-type FBM, it independently connects to the redundant Fieldbus, ensuring continued operation even if one communication path fails.

The Foxboro P0961FR, designated as the Control Processor 60 (CP60) , is a high-performance, optionally fault-tolerant control processor module for the I/A Series Distributed Control System (DCS). As the central processing "brain" of a control node, the CP60 executes regulatory control, logic, timing, and sequential control strategies while managing data acquisition and alarm detection across connected Fieldbus Modules (FBMs). The CP60 supports a wide range of I/O architectures, including DIN rail-mounted FBMs (FBM201, FBM202, etc.) and Y-module form factor FBMs (FBM01, FBM02, etc.), as well as specialized devices such as the Hydrostatic Interface Unit (HIU), Mass Flowmeter, and Panel Display Stations . Its fault-tolerant configuration consists of two single-width processor modules operating in parallel, providing continuous operation even if one module experiences a hardware failure . This processor is widely deployed in critical process industries—including oil and gas refining, power generation, chemical processing, and water treatment—where uninterrupted operation and deterministic control performance are paramount.

The Foxboro P0960JA, designated as CP40, is a high-performance control processor module for the I/A Series Distributed Control System (DCS). As the central processing unit of a control node, the CP40 executes all control strategies—from simple PID loops to complex sequential logic and interlock functions—with deterministic real-time performance. Built around an Intel 486DX4 processor running at 100 MHz, the CP40 delivers the computational power required for demanding process control applications, including fast-reacting loops in power generation, refining, and chemical processing . It supports three flexible Fieldbus configurations—Local, Twinaxial, and Fiber Optic—enabling deployment in applications ranging from compact cabinet installations to plant-wide distributed architectures spanning up to 20 km .

The Foxboro P0960AW (CP30) is a rack-mounted control processor module designed for the I/A Series Distributed Control System (DCS). As the central processing unit of a control node, the CP30 executes regulatory control logic, sequential operations, and manages communication with Fieldbus Modules (FBMs) over the redundant Module Fieldbus. The CP30 serves as the "brain" of the I/A Series rack, running PID loops, Boolean logic, timers, and data acquisition tasks while maintaining high-speed communication with operator workstations and application processors via the Nodebus. Its architecture supports redundant configurations, ensuring uninterrupted process control even during hardware faults. This processor is widely deployed in continuous process industries including oil and gas, power generation, chemical processing, and water treatment, where reliability and deterministic control performance are critical.

The Foxboro P0971WV, commonly designated as DNBT (Dual Nodebus 10Base-T Interface), is a critical communication module for the I/A Series Distributed Control System (DCS). It provides direct interfacing between 50 Series or 70 Series stations and the I/A Series Nodebus, enabling redundant, high-integrity data exchange across the control network. Unlike legacy copper-based interfaces, the DNBT transmits data over a single 10Base-T (shielded twisted-pair) cable, consolidating signal and control information onto one physical medium. This design is optimized for use with Model 51, Style E (and later) processors and 70 Series processors, simplifying cabling architecture while maintaining the deterministic performance required for process control. The module functions as a Z-module form-factor card, designed for mounting in standard I/A Series enclosures. It operates transparently, performing electrical voltage conversion and signal repeating without interpreting or reacting to the data on the associated signal cable.

The Foxboro FCM2F2 (RH914YZ) is a fiber-optic Fieldbus Communications Module designed for the Foxboro I/A Series Distributed Control System (DCS). It serves as a baseplate-to-baseplate fiber optic extender, enabling remote installation of 200 Series Fieldbus Modules (FBMs) while maintaining high-speed, noise-immune communication with the central control station. By converting electrical fieldbus signals to optical pulses, the FCM2F2 allows FBMs to be strategically placed close to field devices, replacing long copper cable runs with a single fiber optic pair. This capability significantly reduces installation costs and eliminates the risks of electromagnetic interference, ground loops, and lightning-induced surges associated with traditional copper wiring. The FCM2F2 supports a nominal maximum baseplate-to-baseplate fiber optic distance of 2 km (1.24 miles), making it ideal for large plants, remote I/O cabinets, and electrically noisy industrial environments.