The Allen-Bradley 1756-DNB is a ControlLogix DeviceNet scanner module that provides a dedicated DeviceNet network interface for Rockwell Automation's ControlLogix systems. As the DeviceNet master on the network, it communicates with DeviceNet I/O devices such as sensors and actuators and translates data to and from the ControlLogix backplane. Installed in a 1756 I/O chassis, it is configured and diagnosed with Rockwell software such as RSNetWorx for DeviceNet and Studio 5000 as applicable. Rockwell’s product literature notes firmware revisions for the 1756-DNB and references Series D information, illustrating ongoing updates to the module’s capabilities.
