Allen-Bradley 1747-SDN/B – SLC 500 DeviceNet Scanner Module

Overview

The Allen-Bradley 1747-SDN/B is a DeviceNet scanner module designed for the SLC 500 controller platform. It communicates with DeviceNet adapter modules over a DeviceNet network, enabling seamless integration of multiple devices. The module is compatible with SLC 5/02 or later controllers and is designed as a single-slot module. It supports operation in slave mode and allows messages to be sent or received in polled, pass-through, state change, cyclic I/O, and other communication configurations.

Key Features

• Compatibility: Works with SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05 controllers.

• Communication: Supports DeviceNet-enabled devices via adapter modules or direct network connections.

• Pass-Through Capability: Acts as a bridge to connect a separate DeviceNet network, replacing legacy modules such as 1770-KFD, 1784-PCD, 1784-PCID, or 1784-PCIDS.

• Node Support: Configures up to 63 nodes at a baud rate of 125 Kbps.

• Backplane Current: 5V DC, 500 mA.

• LED Indicators: Two front-mounted LEDs — Module Indicator for module operation and Network Status for DeviceNet communication status.

• LCD Display: Provides module address and error indications.

• DeviceNet Terminal: Located behind the access door with a 10-pin plug for DeviceNet port connection.

Description

The 1747-SDN/B module enables reliable DeviceNet communications for SLC 500 systems. It supports various operational modes, including polled messaging, state change, cyclic I/O, and pass-through configurations. The pass-through mode allows it to replace older DeviceNet modules while maintaining seamless communication between networks.

Designed for industrial environments, the 1747-SDN/B provides clear visual status via LEDs and an LCD display, helping operators monitor both module performance and network communication. Its compact, single-slot design facilitates straightforward installation and integration into existing SLC 500 systems.