1768-ENBT | Allen-Bradley CompactLogix Ethernet Communication Module

Introduction to the 1768-ENBT

When industrial networks require reliable Ethernet communication, the 1768-ENBT from Allen-Bradley provides a robust solution. This module is part of the CompactLogix series and serves as an Ethernet communication adapter for 1768-L43 and 1768-L45 controllers. It supports linear topology and integrates seamlessly into existing automation systems.

Key Features & Technical Specs

• Module type: Ethernet Communication Module.
• Integrated ports: One (1) Ethernet port.
• Ethernet speed: 10/100 Mbps with auto-negotiation.
• Maximum connections: 64 CIP and 32 Ethernet TCP/IP.
• Cable type: Category 5 or Category 6 cable with RJ45 connectors.
• Mounting: DIN Rail or Panel Mount.
• Operating temperature: 0° to +60°C (+32° to +140°F).
• Backplane current: 834 mA at 5.2V DC.
• Power consumption: 4.34 Watts.
• Operating vibration: 5 g at 10–500 Hz.
• Operating shock: 30 g.

One distinctive spec is the ability to support up to 64 CIP connections, which allows integration with many devices on the same network. This reduces the need for additional modules and simplifies system architecture.

Applications & Use Cases

In manufacturing environments, the 1768-ENBT connects CompactLogix controllers to SCADA systems and HMIs. It also enables inter-controller messaging for coordinated machine control. For example, in a packaging line, this module can link multiple 1768-L45 controllers to synchronize operations, improving overall efficiency.

Installation & Setup

Mount the module on a DIN rail or panel within the 1768 CompactLogix assembly. Use a Category 5 or Category 6 cable with RJ45 connectors to connect to the Ethernet network. Before handling, discharge static electricity by touching a grounded object or wearing a static-free wristband. Ensure the module is properly seated in the slot and that all connections are secure.

Maintenance & Reliability

Regularly inspect the module for dust accumulation and ensure proper ventilation to maintain operating temperature within 0° to +60°C. Check cable connections for wear or damage. Following these steps helps extend service life and reduce downtime, contributing to long-term cost savings.

Compatibility & Integration

The 1768-ENBT is compatible with 1768-L43 and 1768-L45 controllers. It supports up to two instances with the 1768-L43 and up to four instances with the 1768-L45. The module uses Ethernet/IP protocol, allowing integration with Allen-Bradley drives, motor starters, and third-party devices. It also works with Stratix switches and legacy equipment like PowerFlex drives.

Comparison with Similar Modules

Compared to other Ethernet modules, the 1768-ENBT offers a dedicated CompactLogix form factor and specific instance limits. For example, while some modules support more ports, the 1768-ENBT provides a single port optimized for linear topology. Its 64 CIP connections and 32 TCP/IP connections suit medium-sized networks. This module is ideal for users needing a compact, integrated solution without extra expansion.

FAQ about 1768-ENBT

Q: What is the maximum number of 1768-ENBT modules per controller?

A: Up to two modules with 1768-L43 and up to four with 1768-L45.

Q: What cable type does the 1768-ENBT require?

A: It requires Category 5 or Category 6 cable with RJ45 connectors.

Q: What is the operating temperature range?

A: The module operates from 0° to +60°C (+32° to +140°F).

Q: Can the 1768-ENBT communicate with PowerFlex drives?

A: Yes, it can communicate with PowerFlex Adjustable Frequency AC Drives and other Ethernet/IP devices.

Q: What is the power consumption of the 1768-ENBT?

A: It consumes 4.34 Watts and draws 834 mA at 5.2V DC from the backplane.

Product Support & Availability

The 1768-ENBT is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and delivery options. We provide reliable industrial automation parts to keep your operations running.