Description
Description
The Allen-Bradley 1756-EN2T is a high-performance EtherNet/IP communication bridge module designed for the ControlLogix platform. This module enables seamless connectivity between ControlLogix controllers, distributed I/O, HMI systems, SCADA networks, and other EtherNet/IP-enabled industrial hardware. By acting as a bridge between the ControlLogix backplane and standard industrial Ethernet networks, it facilitates real-time I/O messaging, controller-to-controller data exchange, and supervisory control functions.
Features
- Supports 10/100 Mbps communication rates over standard twisted-pair copper media.
- Provides 256 Logix (CIP) communication connections and 128 TCP/IP connections.
- Supports up to 8 axes of integrated motion control on the EtherNet/IP network.
- Features electronic keying, device-level ring (DLR) support, and parallel redundancy protocol (PRP) capabilities.
- Enables CIP safety standard integration for simultaneous transfer of control and safety diagnostics.
- Designed for installation in any available slot within a ControlLogix chassis.
Technical Specifications
| Model |
1756-EN2T |
| Communication Rate |
10/100 Mbps |
| Integrated Ports |
1 x RJ45, 1 x USB 1.1 |
| Current Draw |
1.0 A at 5.1 V DC |
| Power Dissipation |
5.1 W |
| Thermal Dissipation |
17.4 BTU/hour |
| Operating Temperature |
0 to 60 degC (32 to 140 degF) |
| Insulation Voltage |
30 V Continuous |
Applications
- High-speed packaging and assembly line automation.
- Batch and recipe management via FactoryTalk integration.
- Remote I/O and distributed process rack communication.
- Integration of flow meters and custody transfer instrumentation.
- Pipeline emergency shutdown (ESD) systems requiring SIL2 diagnostic data transfer.
Installation Guidelines
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Chassis Mounting: Align the module circuit board with the top and bottom guide rails of the designated ControlLogix chassis slot. Slide the module in until it is fully seated and the retaining tabs click into place.
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Wiring: Use standard Category 5 unshielded twisted-pair (UTP) cabling for the RJ45 Ethernet interface. Ensure proper strain relief for all network cables.
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RIUP Support: The 1756-EN2T supports Removal and Insertion Under Power (RIUP), allowing for maintenance without cycling chassis power.
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Configuration: Network parameters, including IP address, subnet mask, and gateway settings, must be configured via the programming environment to enable network communication.
FAQ
What is the primary function of the 1756-EN2T?
The 1756-EN2T serves as a communication bridge that allows ControlLogix controllers to communicate with other devices and systems over an EtherNet/IP network, supporting both explicit and implicit messaging.
Can this module be used for motion control?
Yes, this module supports up to 8 axes of integrated motion control on an EtherNet/IP network.
Does this module require a specific chassis slot?
No, the 1756-EN2T can be installed in any slot within a standard ControlLogix chassis.
