Allen-Bradley 1747-SDN DeviceNet Scanner Module

The Allen-Bradley 1747-SDN DeviceNet Scanner Module wires a Rockwell Automation SLC 500 PLC to a DeviceNet field network, acting as the DeviceNet master that polls up to 63 DeviceNet I/O devices. Specifically designed for SLC 5/02 and newer processors, it installs in a 1747 backplane slot and communicates with DeviceNet devices through its scanlist. The module is powered from 5-24 VDC and typically draws 90–500 mA, allowing use with standard industrial power supplies. Configuration and diagnostics are performed with RSNetWorx for DeviceNet, with node addresses and scanlists defined in the software and reflected in the PLC data table. As part of the 1747 family, the 1747-SDN is documented on Rockwell’s site and appears in industry catalogs and ODVA listings as a DeviceNet Scanner Module. This module enables integration of DeviceNet-compatible sensors, actuators, and I/O blocks into legacy SLC 500 control systems, providing direct I/O mapping and data exchange between DeviceNet devices and the SLC program.