Overview
The EOTec fiber optic module is an industrial-grade communications component manufactured by Weed Instrument, designed to integrate fiber optic networking into PLC and factory automation systems. EOTec modules provide reliable copper-to-fiber conversion and enable isolated, noise-immune data transmission in harsh industrial environments.
Key Features
- Fiber optic isolation eliminates ground loops and EMI/RFI interference
- Support for multiple communication protocols and network topologies
- Industrial operating temperature range of -40°C to 85°C
- Modular design integrates with PLC chassis and backplane systems
- Suitable for hazardous areas and long-distance communication runs
Technical Specifications
- Manufacturer: Weed Instrument (now Curtiss-Wright/Ultra Electronics)
- Product Line: EOTec 2000 / 6000 Industrial Fiber Optic Modules
- Power Supply: 7.5–9 VDC via backplane bus or external 24 VDC screw terminals
- Operating Temperature: -40°C to 85°C (some models to 95°C)
- Humidity: 0–95% RH non-condensing
- Optical Fiber: 850 nm or 1300 nm multi-mode or single-mode compatible
- Mounting: 35 mm DIN rail or backplane integration
- Certifications: FM approved for hazardous locations (Class I, Division 2)
Typical Applications
- Industrial Ethernet, ControlNet, and DeviceNet fiber conversion
- PLC-to-PLC fiber optic communication in noisy manufacturing environments
- Hazardous location plant networks (chemical, petrochemical, pharmaceutical)
- Long-distance communication between distributed control nodes
- Media redundancy and network topology flexibility
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlNet systems
- Allen-Bradley CompactLogix and ControlLogix platforms
- Siemens PROFINET and PROFIBUS networks
- DeviceNet automation networks
- Industrial Ethernet / Ethernet/IP systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Specific compatible model numbers depend on your network protocol (ControlNet, DeviceNet, Ethernet/IP, etc.).
Works With
- RS-Logix 5000 / Studio 5000 (Allen-Bradley)
- TIA Portal (Siemens)
- EtherNet/IP, ControlNet, DeviceNet protocols
- PROFINET and PROFIBUS industrial networks
- Fiber optic cabling (multimode and single-mode)



