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
Product Model
1756-EN2F
Module Type
Ethernet Communication Module
Ethernet Speed
10/100 Mbps
USB Rate
12 Mbps
TCP/IP Connections
128
Total Connections
256
Backplane Current (5.1V DC)
1.2 A
Backplane Current (24V DC)
3 mA
Power Dissipation
6.2 W
Mounting
1756 Chassis
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).
