Foxboro CP100 Field Control Processor Module

Foxboro CP100 rack‑mount field control processor module,executes PID,sequence and interlock control logic,Nodebus and fieldbus interface,self‑diagnostic LED,ISA‑S71.04 G3 environmental rating,for legacy petrochemical DCS control‑node hardware maintenance retrofit
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Products Description


Foxboro CP100 Field Control Processor Module



Technical Specifications

Model:CP100

Brand:Foxboro

System compatibility:I/A Series DCS distributed control system

Function:Field control processor core unit,executes real‑time PID adjustment,sequence control and safety interlock logic for process loops

Installation:Standard I/A‑Series rack‑mount installation,mated with dedicated node baseplate

Communication interface:Nodebus high‑speed control network interface;FBM fieldbus interface for connecting field I/O subsystems

Processing capability:Real‑time control block execution,process‑data acquisition and calculation,alarm event processing

Memory:On‑board non‑volatile memory,retains control configuration and application parameters

Feature:Support hot‑swap online replacement without system power‑off

Diagnostic:Front‑panel multi‑color LED indicators for module power,Nodebus link,fieldbus link and internal fault alarm

Power supply:Rack backplane powered

Protection:Built‑in transient surge protection for all communication interfaces

Environmental standard:Compliant with ISA‑S71.04 Class G3 industrial atmospheric condition

Housing:Metal shielded rack‑mount housing,anti‑vibration mechanical reinforcement

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +55℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:1.18kg

Dimensions:34mm × 250mm × 220mm

Certification:CE,UL

MTBF:>86000 hours



Built‑in function

CP100 field control processor serves as core control node hardware for Foxboro I/A‑Series DCS system. It communicates with operator workstation via Nodebus network and connects field FBM I/O subsystems through fieldbus. It completes real‑time PID regulation,sequence program execution and safety interlock logic processing. Non‑volatile memory keeps configuration parameters stable after power loss. Hot‑swap function supports online module replacement and reduces plant downtime risk. Front‑panel LED feedback facilitates on‑site fault inspection,widely applied for petrochemical,chemical and power‑plant process‑control cabinets.

Product Brief

CP100 belongs to Foxboro I/A Series legacy DCS control‑node spare‑part family,obsolete original rack‑mount processor component. Must be fitted in matching I/A‑Series instrument rack with correct Nodebus and fieldbus wiring. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.


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