Allen-Bradley 1756-DNB ControlLogix IO Module

The Allen-Bradley 1756-DNB DeviceNet Bridge/Scanner Module for ControlLogix is a dedicated DeviceNet interface card that installs in a 1756 backplane rack and provides a DeviceNet network connection for a ControlLogix system. As the DeviceNet master on the DeviceNet network, it communicates with field devices such as sensors, actuators, and other I/O devices, bridging DeviceNet traffic to the ControlLogix processor over the 1756 backplane. The module is cataloged as 1756-DNB and is available in Series A and Series B, designed to work within the 1756 ControlLogix I/O module family. Common applications include integrating DeviceNet devices into industrial automation projects that use a ControlLogix controller for centralized control and data collection. Configuration and integration are performed using Rockwell Automation software and DeviceNet configuration tools, aligning DeviceNet devices with the ControlLogix control strategy without requiring changes to the main PLC program.