The Allen-Bradley 1756-EN2T is an EtherNet/IP communication module used in the ControlLogix PLC system from Rockwell Automation. It provides high-speed industrial Ethernet connectivity between ControlLogix controllers and devices such as HMIs, SCADA systems, drives, and remote I/O.
It is one of the most commonly used ControlLogix Ethernet modules and is designed for copper-based RJ45 communication (10/100 Mbps).
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | EtherNet/IP Communication Module |
| Model | 1756-EN2T |
| System Compatibility | Allen-Bradley ControlLogix |
| Network Type | EtherNet/IP |
| Communication Speed | 10/100 Mbps |
| Port Type | 1 × RJ45 copper Ethernet |
| Protocols | EtherNet/IP, TCP/IP |
| Max TCP Connections | 128 |
| Max CIP Connections | 256 |
| Backplane Interface | ControlLogix chassis backplane |
| Power Consumption | ~5.1 W |
| Current Draw | ~1.0 A @ 5.1 V DC |
| Isolation Voltage | 30 V continuous |
| Installation Type | Chassis slot-mounted module |
| Operating Temperature | 0°C to 60°C |
The module supports real-time industrial communication and integrates tightly with ControlLogix controllers for I/O, messaging, and motion applications.
Physical Dimensions & Weight
- Dimensions (H × W × D): 145 mm × 35 mm × 140 mm
- Weight: ~0.3–0.5 kg
Standard single-slot ControlLogix module form factor for cabinet installation.
Function in ControlLogix System
The 1756-EN2T is used to:
- Connect ControlLogix controllers to EtherNet/IP networks
- Communicate with PLCs, HMIs, SCADA systems, and drives
- Support real-time I/O messaging and data exchange
- Enable remote monitoring and diagnostics
- Integrate distributed automation systems
Recommended Related Models
- Allen-Bradley 1756-EN2F (fiber Ethernet version)
- Allen-Bradley 1756-EN2TR (redundant Ethernet module)
- Allen-Bradley 1756-CNB / CN2 ControlNet modules
- Allen-Bradley 1756-DNB DeviceNet module
- Allen-Bradley 1756-L7x / L8x ControlLogix controllers
