Technical Specifications Core Processor: Industrial‑grade embedded control processor On‑board RAM: High‑reliability industrial memory On‑board Flash Memory: For user control configuration program storage Nodebus Communication Rate: 2 Mbps Backplane I/O Fieldbus: 2 Mbps HDLC fieldbus Operating Power Supply: 24 VDC from system backplane bus Operating Temperature: ‑40 ℃ to +70 ℃ Storage Temperature: ‑50 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mechanical Dimension: Standard single‑slot plug‑in module for Foxboro I/A Series rack Certifications: CE, UL, ATEX, IEC 61508 functional safety compliance
Functional Features Executes user DCS control configuration, including analog closed‑loop PID control and discrete interlock logic. Completes data interaction with rack‑mount I/O modules via backplane HDLC fieldbus. Realizes nodebus network communication management, data exchange with operator station and other control nodes. Built‑in comprehensive self‑diagnosis for processor running state, memory fault, program abnormality, power supply and bus communication fault.
Application Scenarios Process industry distributed control system(DCS). Petrochemical plant main control rack core computing unit. Oil & gas critical production unit DCS control node. Chemical plant high‑reliability production control rack. Power plant main control cabinet core processor.
Structural Characteristics Standard single‑slot plug‑in processor module structure matching Foxboro I/A Series rack. Front panel equipped with status LED indicators for power supply, run status, fault alarm and nodebus communication. Front‑side local maintenance service interface for program download and on‑site debugging.
Working Principle User control configuration program is solidified inside on‑board flash memory. After power‑on, processor loads configuration program into RAM and starts cyclic execution. It reads field measurement data from each I/O module via backplane HDLC fieldbus, executes PID operation and interlock logic judgment, outputs control instruction to corresponding output I/O modules. Meanwhile it completes data interaction with operator station and other control nodes via nodebus network.
Installation Requirements Insert processor module into designated processor slot of Foxboro I/A Series standard rack.
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