Description

The Allen-Bradley 1756-EN2F is a ControlLogix EtherNet/IP communication module designed to provide high-speed fiber optic connectivity for industrial automation systems. As part of the ControlLogix platform, this bridge module facilitates seamless data exchange between the controller and other devices on an EtherNet/IP network, utilizing fiber optic media for enhanced noise immunity and long-distance communication capabilities.

Features

• Fiber optic interface for robust communication in high-EMI environments.
• Supports 10/100 Mbps Ethernet data transfer speeds.
• Provides 128 TCP/IP connections and 256 total connections.
• Integrated USB port for local configuration and diagnostics (12 Mbps).
• Chassis-based mounting for integration into any standard 1756 ControlLogix chassis.

Technical Specifications

Installation Guidelines

• Ensure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical damage.
• Align the module carefully with the chassis slot guides and seat it firmly into the backplane connector.
• Secure the module using the top and bottom retaining screws to ensure proper grounding and mechanical stability.
• Use appropriate fiber optic cabling and connectors; ensure fiber ends are clean and protected from dust or debris.
• Maintain adequate clearance around the module for proper ventilation and cooling within the cabinet.
• Avoid routing communication cables alongside high-voltage power lines to minimize potential signal interference.

FAQ

What is the primary function of the 1756-EN2F?

The 1756-EN2F serves as a bridge module that allows a ControlLogix controller to communicate over an EtherNet/IP network using fiber optic media, providing reliable connectivity for distributed I/O and peer-to-peer messaging.

Can this module be installed in any slot of a 1756 chassis?

Yes, the 1756-EN2F is designed to be chassis-mounted and can be placed in any available slot within a standard 1756 ControlLogix chassis.

Does this module require external power?

No, the module draws its required power directly from the ControlLogix chassis backplane (5.1V DC and 24V DC).