The Allen-Bradley 1756-EN2F, also cataloged as the 1756-EN2F Ethernet/IP Fiber Optic Module, operates as a dedicated hardware component for Ethernet/IP communication exchange within ControlLogix chassis-based automation networks.

Model Configuration Details

The 1756-EN2F is a chassis-mounted Ethernet communication module designed for ControlLogix systems. It provides an EtherNet/IP bridge interface through fiber optic communication and supports data exchange between controllers, remote I/O systems, and Ethernet-connected industrial devices.

The module supports 10/100 Mbps Ethernet communication, up to 128 TCP/IP connections, and installation in any compatible 1756 ControlLogix chassis slot. It also provides USB communication capability for local configuration and diagnostics.

Hardware Specifications

EtherNet/IP Network Characteristics

The 1756-EN2F uses Allen-Bradley EtherNet/IP communication architecture for industrial controller networking. The module supports deterministic Ethernet/IP networks by providing a fiber optic communication path for ControlLogix systems.

The communication interface allows I/O density scaling and controller network expansion while maintaining centralized chassis-based installation. Firmware flash compatibility should be verified when replacing or integrating the module into existing ControlLogix installations.

Fiber optic connectivity is suitable for applications requiring longer communication distances or reduced exposure to electrical interference compared with conventional copper Ethernet connections.

Ordering Information

The standard shipment configuration includes:

• 1 x Allen-Bradley 1756-EN2F ControlLogix Ethernet/IP Fiber Optic Module
• 1 x Factory product identification label
• 1 x Original hardware assembly

Additional components such as fiber optic cables, ControlLogix chassis hardware, power supplies, and network accessories depend on the system installation requirements.

Field Installation Guidelines

Chassis Installation

• Install the module into a compatible 1756 ControlLogix chassis slot.
• Confirm chassis power availability before inserting the module.
• Verify controller firmware compatibility before system startup.

Fiber Optic Connection

• Inspect fiber optic connectors before installation.
• Keep fiber optic cable routing free from excessive bending and mechanical stress.
• Protect optical interfaces from dust and contamination.

Network Configuration

• Configure Ethernet/IP addressing according to the control network design.
• Verify communication parameters before connecting field devices.
• Maintain separation between communication cables and high-voltage power wiring.

Frequently Asked Questions

• What is the primary function of the 1756-EN2F?

  The 1756-EN2F provides Ethernet/IP bridge communication for ControlLogix chassis systems using a fiber optic network interface.

• Which chassis can accept this module?

  The module is designed for installation in any compatible Allen-Bradley 1756 ControlLogix chassis.

• What Ethernet communication speed does the module support?

  The module supports Ethernet communication speeds of 10 Mbps and 100 Mbps according to the provided specifications.

• How many TCP/IP connections are supported?

  The module supports up to 128 TCP/IP connections for connected industrial network devices.

• Does the 1756-EN2F provide USB communication?

  Yes. The module includes USB communication capability with a specified data transfer rate of 12 Mbps.

• What type of network cable connection is used?

  The module provides fiber optic Ethernet communication for network connections requiring optical transmission.

• What backplane power does the module require?

  The module requires 1.2 A at 5.1 VDC from the ControlLogix chassis backplane power supply.

• Does firmware compatibility affect installation?

  Yes. The module firmware revision should match the ControlLogix controller and network configuration requirements.