Product Overview
The Allen-Bradley 1768-ENBT is a CompactLogix Ethernet communication module designed to enable seamless connectivity between a CompactLogix assembly and devices on an Ethernet/IP network. As part of the 1768 product family, this module is engineered for engineers who demand reliable data exchange in industrial automation environments. It addresses the pain point of integrating legacy and modern systems by supporting both half-duplex and full-duplex communication with auto-negotiation, ensuring stable connections even in noisy plant floors.
Technical Specifications Breakdown
Key parameters for the 1768-ENBT are listed below for quick reference:
| Feature | Specification |
|---|---|
| Module Type | Ethernet Communication Module |
| Manufacturer | Allen Bradley |
| Integrated Ports | One (1) Ethernet |
| Ethernet Speed | 10/100 Mbps |
| Maximum Connections | 64 CIP / 32 Ethernet TCP/IP |
| Cable | Category 5 / Category 6 cable |
| Connectors | RJ45 |
| Operating Temperature | 0° to +60°C (+32° to +140°F) |
| Backplane Current | 834 mA at 5.2V DC |
| Power Consumption | 4.34 Watts |
Industry Applications
This module excels in discrete manufacturing and process control environments. For example, in a packaging line, it enables real-time data exchange between a CompactLogix controller and HMI terminals, reducing downtime. In a water treatment plant, it facilitates SCADA integration, allowing operators to monitor pump status remotely. The module's support for up to 64 CIP connections makes it suitable for medium-scale networks where multiple devices need to communicate reliably.
Installation & Setup Guidance
Mount the 1768-ENBT on a DIN rail or panel within a 1768 CompactLogix assembly. Use Category 5 or Category 6 cable with RJ45 connectors for Ethernet connections. Before handling, discharge static electricity by touching a grounded object, and use a static-free wristband. Ensure the module is seated firmly in a single slot of the 1768 chassis. After installation, verify link status via the front-panel indicators.
Maintenance & Reliability
Inspect the module periodically for dust accumulation on the RJ45 port and ensure ambient temperature stays within 0° to +60°C. The unit withstands operating vibration of 5 g at 10-500 Hz and shock of 30 g, making it robust for industrial environments. No internal maintenance is required; if issues arise, check cable integrity and network configuration.
Compatibility & Integration
The 1768-ENBT is compatible with CompactLogix controllers 1768-L43 and 1768-L45. Up to two instances can be used with the 1768-L43, and up to four with the 1768-L45. It supports linear Ethernet topology and works with standard Ethernet switches. The module communicates with devices such as PowerFlex drives, Kinetix servo drives, and third-party equipment via Ethernet/IP.
Selection Guide & Purchasing Advice
When selecting a communication module, consider the number of required connections and controller type. The 1768-ENBT is ideal for systems needing up to 64 CIP connections. For availability and lifecycle status, contact SpareTechPLC, a trusted supplier of industrial automation parts.
Troubleshooting & Common Issues
If the module fails to establish connections, check the Ethernet cable for damage and ensure it is Category 5 or Category 6. Verify that the controller supports the desired number of instances. If the OK indicator is off, power cycle the system and wait for status lights to turn off before restarting. For persistent issues, review network configuration settings.
