Product Overview
The Allen-Bradley 1756-EN2TXT is a high-performance EtherNet/IP bridge module designed for the ControlLogix platform. Built to withstand harsh and corrosive environments, this module operates reliably across a temperature range of -25 to 70 °C (-13 to 158 °F). It provides seamless network communication and control, linking the ControlLogix backplane to EtherNet/IP networks for real-time I/O messaging and data exchange.
Key Features & Specifications
This module offers robust connectivity and performance:
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Module Type: High Performance Bridge with Embedded Switch
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EtherNet/IP Rate: 10/100 Mbps
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Logix Communication Connections: 256
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TCP/IP Communication Connections: 128
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Current Draw at 5.1 VDC: 1 Ampere
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Slot Width: 1
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Ethernet Ports: 2 (RJ45 Cat 5)
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USB Port: USB 1.1 Full-Speed (12 Mbps)
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Enclosure Type: None (Open-Style)
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Mounting Location: Chassis (Any Slot)
Technical Specifications Breakdown
The 1756-EN2TXT delivers 256 Logix communication connections and 128 TCP/IP connections, enabling efficient handling of complex control and data traffic. Its 10/100 Mbps EtherNet/IP rate ensures fast, reliable communication for time-critical applications. With two RJ45 Cat 5 Ethernet ports, the module supports device-level ring (DLR) topologies for network redundancy. The USB 1.1 full-speed port allows local configuration and diagnostics. Drawing only 1 A at 5.1 VDC, it maintains low power consumption while delivering high performance.
Industry Applications
The 1756-EN2TXT excels in demanding industries such as oil and gas, chemical processing, and mining, where corrosive atmospheres and extreme temperatures are common. It supports up to 8 integrated motion axes when paired with a 1756-L7x controller, making it suitable for advanced motion control applications. Its ability to handle 10,000 I/O packets per second (25,000 with L7x) ensures responsive control in high-speed production lines.
Installation & Setup Guidance
Install the 1756-EN2TXT into any available slot in a ControlLogix chassis. Ensure the chassis is properly grounded and the module is seated firmly in the backplane. Connect Ethernet cables to the RJ45 ports, and use the USB port for initial configuration. For harsh environments, verify that the module's open-style enclosure is protected from direct exposure to contaminants. Follow standard Rockwell Automation installation practices for best results.
Maintenance & Reliability
Routine inspection of the 1756-EN2TXT helps ensure long-term reliability. Check Ethernet cable connections for wear or corrosion, especially in corrosive environments. Keep the module free from dust and debris. The module's rugged design, rated for -25 to 70 °C, minimizes downtime in extreme conditions. Regularly update firmware to maintain compatibility with the latest ControlLogix features.
Compatibility & Integration
The 1756-EN2TXT is part of the ControlLogix family and integrates seamlessly with 1756-L7x controllers. It supports EtherNet/IP networks and is compatible with 1756-A4LXT, 1756-A5XT, 1756-A7XT, and 1756-A7LXT chassis. The module supports SNMP (password required) and socket services, enabling advanced network management and custom applications.
Buying Guide & Selection Advice
When selecting the 1756-EN2TXT, verify your chassis compatibility and confirm that your controller supports the required number of connections. Consider the environmental conditions of your facility to ensure the module's temperature range meets your needs. For genuine, factory-new modules, rely on PLC Source PRO for competitive pricing and fast delivery. Our inventory is sourced directly from authorized distributors, ensuring authenticity and reliability.