The Allen-Bradley 1756-EN2TRXT is a high-performance EtherNet/IP communication bridge module designed for the ControlLogix-XT (Extended Temperature) platform. Engineered for reliability in harsh industrial environments, this module provides robust protection against corrosive atmospheres, high humidity, salt spray, and extreme temperature fluctuations. By utilizing dual-port embedded switch technology, it supports advanced network topologies such as Device Level Ring (DLR), linear, and star configurations without the need for external switches.
Features
Ruggedized Design: Built to withstand harsh conditions, including exposure to caustic materials and fungal growth, meeting stringent environmental standards.
Embedded Switching: Features two RJ45 ports that support DLR topology for rapid network recovery and reduced downtime.
Communication Versatility: Supports simultaneous transmission of I/O, safety, and diagnostic data over a single network link.
Configuration Port: Includes a USB 1.1 interface for local module configuration, firmware updates, and troubleshooting.
Wide Temperature Range: Certified for operation in environments ranging from -25 degC to 70 degC.
Applications
This module is ideal for critical infrastructure, oil and gas processing, water treatment facilities, and heavy manufacturing sites where standard electronic components are prone to premature failure due to environmental stressors or extreme thermal conditions.
Technical Specifications
Model
1756-EN2TRXT
Product Series
ControlLogix-XT
Communication Ports
2 x RJ45 (10/100 Mbps), 1 x USB 1.1
Operating Temperature
-25 to 70 degC
Backplane Power
1.00 A at 5.1 VDC
CIP Connections
256
TCP/IP Connections
128
Slot Width
1 Slot
Environmental Rating
ANSI/ISA-71.04-1985 Class G3
Installation Guidelines
Ensure the ControlLogix-XT chassis is properly grounded before inserting the module.
Handle the module using ESD-safe practices to prevent damage to sensitive internal components.
Always power down the chassis backplane before installing or removing the 1756-EN2TRXT to prevent electrical arcing.
Use shielded Category 5 or higher Ethernet cabling for all network connections to minimize EMI interference.
Ensure adequate airflow around the chassis to maintain the specified operating temperature range.
FAQ
Q: Does this module require an external switch for a DLR network? A: No, the 1756-EN2TRXT features an embedded switch, allowing it to manage DLR network traffic and ring recovery internally.
Q: Can I use this module in a standard ControlLogix chassis? A: While compatible with standard ControlLogix chassis, the XT designation indicates it is specifically hardened for extreme environments; it will function in both standard and XT chassis types.
