Product Details
Overview
The 1756-EN2TR from Allen-Bradley is a dual-port EtherNet/IP communication module designed for the ControlLogix platform.
It enables high-speed Ethernet connectivity, real-time data exchange, and network redundancy between industrial controllers, I/O modules, and supervisory systems.
Built with advanced diagnostics, high performance, and robust environmental tolerance, this module ensures reliable communication for complex automation networks.
Technical Specifications
-
Manufacturer: Allen-Bradley
-
Model / Part Number: 1756-EN2TR
-
Product Type: EtherNet/IP Communication Module
-
Series: ControlLogix (Bulletin 1756/1757)
-
Component Type: PLC & I/O Communications Module
Network & Interface Specifications
-
Communication Protocol: EtherNet/IP
-
Communication Ports:
-
2 × RJ45 Ethernet Ports (redundant or daisy-chain capable)
-
1 × USB Port (for programming and diagnostics only)
-
Maximum Network Speed: 100 Mbps (Full Duplex)
-
Supported Topologies: Star, Linear, and Device-Level Ring (DLR)
-
Connection Capacity: Up to 128 CIP connections per module
-
IP Address Assignment: DHCP, BOOTP, or static configuration
Electrical & Performance Characteristics
-
Nominal Voltage: Supplied via ControlLogix backplane
-
Backplane Current (5.1V DC): 1 A typical
-
Backplane Current (24V DC): 3 mA typical
-
Data Transfer Rate: Deterministic EtherNet/IP control traffic with embedded switch redundancy
Environmental Ratings
-
Operating Temperature: 0°C to +60°C (32°F to 140°F)
-
Storage Temperature: –40°C to +85°C (–40°F to 185°F)
-
Relative Humidity: Up to 95%, non-condensing
-
Vibration: 2 g @ 10–500 Hz
-
Shock Resistance: 30 g operating, 50 g non-operating
-
Enclosure Type: None (open-style industrial module)
Mechanical Information
-
Dimensions (H × W × D): 145 × 35 × 118 mm
-
Weight: 0.91 kg (2.01 lb)
-
Mounting: Standard ControlLogix chassis slot
Application Notes
The 1756-EN2TR is engineered for applications requiring high availability and real-time communication, such as process automation, robotics, and distributed motion control.
It is compatible with Studio 5000 Logix Designer software and supports redundancy configurations in Device-Level Ring (DLR) networks, ensuring network uptime in critical environments.
FAQ
Q: What is the purpose of the dual Ethernet ports on the 1756-EN2TR?
A: They allow for redundant connections or linear topologies, improving network reliability and flexibility.
Q: Does this module support USB programming?
A: Yes, the integrated USB port is used exclusively for configuration and firmware updates.
Q: What is the maximum network speed supported?
A: The module supports up to 100 Mbps full-duplex communication.
Q: Can the 1756-EN2TR be used with redundant controllers?
A: Yes, it is fully compatible with ControlLogix redundant controller configurations.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
How to Train Your Maintenance Team for Industrial Automation Systems
Proper training of maintenance teams is essential to prevent downtime and ensure smooth operations in industrial automation. With PLCs, DCS, SCADA, and IoT systems, technicians need advanced skills to manage complex control systems. This guide provides a structured approach to building a capable team.
Understanding Fail-Safe in Siemens PLCs for Industrial Automation
In industrial automation, safety PLCs provide advanced protection beyond standard types. They safely shut down machinery during faults, reducing external hardware needs. Certified to SIL and IEC/ISO standards, they ensure functional safety in factory automation, protecting both personnel and critical equipment.
Understanding GE Fanuc Emerson Field Control for Industrial Automation
GE Fanuc Emerson’s Field Control I/O offered a compact, DIN-rail-mounted solution for industrial automation. Ideal for water treatment and process plants, its integrated design saved panel space and simplified wiring. Though reliable, this line is now obsolete, requiring a shift to modern, high-speed remote I/O.