Technical Specifications Interface Type: Dual‑channel electrical‑to‑optical conversion interface, multi‑mode fiber port Communication Rate: 2 Mbps nodebus rate Multi‑mode Fiber Max Transmission Distance: 2000 meters Electrical Isolation: Complete electrical isolation between local rack and remote fiber communication segment Transient Surge Suppression: 1500 V Operating Power Supply: 24 VDC from system backplane bus Communication Protocol: Proprietary I/A Series nodebus HDLC protocol 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 Supports dual‑channel redundant electrical‑optical conversion for I/A Series nodebus network. Realizes long‑distance anti‑interference data transmission via multi‑mode optical fiber medium. 
Application Scenarios Process industry distributed control system(DCS). Large petrochemical plant long‑distance control cabinet interconnection network. Oil & gas wide‑range production site DCS nodebus optical communication. Chemical plant heavy‑EMI‑interference remote control network transmission. Power plant main control room and field cabinet redundant optical interconnection. Industrial sites with severe electromagnetic interference for control network interconnection.
Structural Characteristics Standard single‑slot plug‑in structure matching Foxboro I/A Series rack. Front panel equipped with status LED indicators for power supply, primary optical link, backup optical link and communication fault.
Working Principle Electrical nodebus signals from rack backplane enter module internal circuit. Dual independent electrical‑optical conversion units convert electrical signal into optical signal and transmit outward through multi‑mode optical fiber.
Installation Requirements Insert module into designated slot of Foxboro I/A Series standard rack. Ensure rack ground connection strictly complies with official system grounding specification. Optical fiber cable shall follow construction specification, avoid sharp bending and extrusion damage.
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