Excellent PLC
Product Introduction
The Allen-Bradley 1756-EN2TP is a dual-port EtherNet/IP bridge module designed for high-availability ControlLogix systems. Developed by Rockwell Automation, this module integrates Parallel Redundancy Protocol (PRP) to ensure continuous network operation without interruption, even in the event of a network failure.
As part of the ControlLogix communication family, the 1756-EN2TP enables real-time data exchange between controllers, I/O systems, and supervisory devices over industrial Ethernet. Its dual-port architecture allows simultaneous communication across redundant networks, significantly improving system reliability in mission-critical applications.
With support for 128 TCP/IP connections and 256 Logix connections, the module is well-suited for large-scale distributed control systems. Its ability to handle high packet rates and support SNMP diagnostics further enhances its role in advanced industrial networking environments.
Product Specifications
| Parameter | Description |
|---|---|
| Model | 1756-EN2TP |
| Series | ControlLogix |
| Module Type | EtherNet/IP Dual Port Bridge Module |
| Protocol | EtherNet/IP (CIP) |
| Redundancy Protocol | Parallel Redundancy Protocol (PRP) |
| Ethernet Speed | 10/100 Mbps |
| TCP/IP Connections | 128 |
| Logix Connections | 256 |
| CIP Unconnected Messages | 128 (Backplane) + 128 (Ethernet) |
| I/O Packet Rate | 10,000 packets/s |
| HMI/MSG Packet Rate | 2,000 packets/s |
| SNMP Support | Yes |
| Ports | Dual Ethernet Ports |
| Backplane Current | Approx. 1 A @ 5V DC |
| Module Placement | Any slot in ControlLogix chassis |
| Operating Temperature | 0 to 60°C |
| Dimensions | 144.5 × 34.6 × 130.18 mm |
| Weight | 0.45 kg |
Applications
• High-availability control systems – Ensures uninterrupted communication using PRP redundancy
• Industrial Ethernet networks – Connects controllers, I/O devices, and SCADA systems via EtherNet/IP
• Process automation industries – Ideal for oil & gas, power generation, and chemical processing
• Critical infrastructure systems – Used in applications where network downtime is unacceptable
• Distributed control systems – Supports large-scale, multi-node automation architectures
Advantages
• PRP redundancy support – Provides seamless network failover with zero recovery time
• Dual Ethernet ports – Enables parallel communication paths for increased reliability
• High connection capacity – Supports up to 128 TCP/IP and 256 Logix connections
• High-performance communication – Handles large volumes of real-time data efficiently
• Advanced diagnostics – SNMP support allows monitoring and network management
• Flexible system integration – Compatible with all ControlLogix platforms
