Description
The Allen-Bradley 1756-EN2TRXT is a ruggedized EtherNet/IP communication bridge module within the ControlLogix-XT series, specifically developed for deployment in harsh industrial conditions. This module incorporates dual-port embedded switch technology to support advanced network topologies, including Device Level Ring (DLR), linear, and star configurations, while maintaining high-speed communication in demanding environments.
Features
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Ruggedized Design: Engineered with specialized protective coatings to withstand corrosive gases, high humidity, salt spray, and extreme temperature fluctuations.
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Dual-Port Embedded Switch: Facilitates seamless integration into DLR networks, providing rapid recovery times in the event of a media fault.
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Extended Environmental Range: Rated for reliable operation between -25 and 70 degC.
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High-Performance Connectivity: Supports up to 256 CIP connections and 128 TCP/IP connections for robust data exchange.
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Local Configuration: Includes a dedicated USB 1.1 port for efficient local diagnostics and module programming.
Technical Specifications
| Model |
1756-EN2TRXT |
| Brand |
Allen-Bradley / Rockwell Automation |
| Product Series |
ControlLogix-XT |
| Communication Rate |
10/100 Mbps (Auto-negotiating) |
| Operating Temperature |
-25 to 70 degC |
| CIP Connections |
256 |
| TCP/IP Connections |
128 |
| Backplane Power |
1.0 A at 5.1 VDC |
| Slot Width |
1 Slot |
Installation Guidelines
- Ensure the ControlLogix-XT chassis is properly grounded before installing the module.
- Always power down the chassis backplane before inserting or removing the 1756-EN2TRXT to prevent electrical arcing or damage to the backplane pins.
- Use shielded twisted-pair cabling for all Ethernet connections to minimize EMI interference in high-noise environments.
- Maintain adequate clearance around the module to ensure proper airflow and heat dissipation, especially when operating at the upper limits of the temperature range.
- Handle the module with care to avoid damaging the conformal coating that provides environmental protection.
FAQ
Is this module compatible with standard ControlLogix chassis? Yes, the 1756-EN2TRXT is physically compatible with any standard ControlLogix chassis, though it is intended for use in ControlLogix-XT environments to take full advantage of its ruggedized features.
Does this module require an external switch for DLR? No, the integrated dual-port switch allows the module to function as part of a Device Level Ring (DLR) without the need for an external managed industrial switch.
