The Allen-Bradley 1756-EN2T/B is a high-performance Ethernet/IP communication bridge module designed for the ControlLogix platform. As a Series B module, it serves as a robust interface between the ControlLogix backplane and industrial Ethernet networks. It facilitates high-speed data exchange, supporting I/O control, messaging, and system programming across plant-wide network architectures.
Features
Supports 10/100 Mbps communication rates with auto-negotiation.
Optimized for high-speed messaging and I/O packet throughput.
Compatible with Ethernet/IP Device Level Ring (DLR) topologies for enhanced network resilience.
Integrated support for advanced security protocols and diagnostic monitoring.
Designed for seamless integration with ControlLogix controllers, HMIs, and distributed I/O systems.
Applications
This module is typically utilized in industrial automation environments requiring reliable, high-speed communication between PLC controllers and networked devices. Common applications include distributed control systems, machine-to-machine communication, and remote monitoring of industrial processes.
Technical Specifications
Brand
Allen-Bradley
Product Line
ControlLogix
Module Type
Ethernet/IP Communication Bridge
Communication Rate
10/100 Mbps
Backplane Current (5.1V DC)
1.0 Amp
Backplane Current (24V DC)
3 mA
Power Dissipation
5.1 Watts (Maximum)
Isolation Voltage
30V (Continuous)
Operating Temperature
0 to 60 degC (32 to 140 degF)
Relative Humidity
5% to 95% (non-condensing)
Installation Guidelines
Ensure the ControlLogix chassis is powered down before inserting or removing the module.
Seat the module firmly into the designated chassis slot and secure it using the top and bottom latching mechanisms.
Use shielded twisted-pair Ethernet cabling to minimize EMI interference in industrial environments.
Maintain proper ventilation within the cabinet to ensure the module operates within its specified temperature range.
Follow standard ESD precautions when handling the module to prevent damage to internal circuitry.
FAQ
What is the difference between the 1756-EN2T and the Series B version?
The Series B version (1756-EN2T/B) includes hardware and firmware enhancements that provide improved performance, better support for DLR (Device Level Ring) topologies, and updated security features compared to earlier hardware revisions.
Does this module support auto-negotiation?
Yes, the 1756-EN2T/B supports 10/100 Mbps communication with auto-negotiation, allowing it to automatically detect the speed of the connected network device.
