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The Allen-Bradley 1756-CNBR is a ControlLogix ControlNet Bridge module designed to facilitate high-speed communication between ControlLogix controllers and other devices on a ControlNet network. This module supports redundant media configurations, providing increased reliability for critical industrial automation applications. It acts as a bridge, allowing the controller to communicate with I/O modules, drives, and other controllers across the ControlNet link.
| Product Model | 1756-CNBR |
| Communication Rate | 5 Mbps |
| Backplane Current (5.1V DC) | 970 mA |
| Current Draw (24V DC) | 1.7 mA |
| Power Dissipation (Max) | 5.5 W |
| Isolation Voltage | 30V Continuous |
| Operating Temperature | 0 to 60 degC (32 to 140 degF) |
The 1756-CNBR is a communication bridge that allows a ControlLogix controller to interface with the ControlNet network, enabling data exchange with remote I/O and other controllers.
Yes, the 1756-CNBR is specifically designed to support redundant ControlNet media, which provides a backup communication path in the event of a cable failure.
The module draws 970 mA from the 5.1V DC backplane and 1.7 mA from the 24V DC source.