The Allen-Bradley 1756-EN2F is an EtherNet/IP communication module used in the ControlLogix PLC system from Rockwell Automation. It provides high-speed industrial Ethernet communication between ControlLogix controllers, HMI systems, SCADA networks, and other EtherNet/IP-enabled devices.
Unlike copper Ethernet modules, the 1756-EN2F uses multimode fiber optic communication, which improves noise immunity and allows longer transmission distances in industrial environments.
It is widely used in large-scale automation systems such as manufacturing plants, process control systems, and distributed control architectures.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | EtherNet/IP Communication Module |
| Model | 1756-EN2F |
| System Compatibility | Allen-Bradley ControlLogix |
| Network Type | EtherNet/IP |
| Media Type | Fiber Optic (Multimode LC connector) |
| Communication Speed | 10/100 Mbps |
| Channels | 1 Fiber Ethernet port |
| Protocol Support | EtherNet/IP, TCP/IP |
| Max TCP Connections | 128 |
| Max CIP Connections | Up to 256 |
| Backplane Interface | ControlLogix chassis backplane |
| Power Consumption | ~6.2 W |
| Current Draw | ~1.2 A @ 5.1 V DC |
| Isolation Voltage | 30 V continuous |
| Installation Type | Chassis slot-mounted module |
| Operating Temperature | 0°C to 60°C |
Physical Dimensions & Weight
- Dimensions (H × W × D): 145 mm × 32 mm × 140 mm
- Weight: ~0.3–0.5 kg
The module is a standard single-slot ControlLogix module designed for rack installation in industrial control cabinets.
Function in ControlLogix System
The 1756-EN2F is used to:
- Connect ControlLogix controllers to EtherNet/IP networks
- Enable communication with PLCs, HMIs, SCADA systems
- Support real-time industrial Ethernet traffic
- Provide high-speed data exchange over fiber optic networks
- Allow remote monitoring and diagnostics of automation systems
Recommended Related Models
- Allen-Bradley 1756-EN2T (copper Ethernet version)
- Allen-Bradley 1756-EN2TR (redundant Ethernet module)
- Allen-Bradley 1756-L7x / L8x ControlLogix controllers
- Allen-Bradley 1756-CNB / CN2 ControlNet modules
- Allen-Bradley 1756-DNB DeviceNet module
