ALLEN BRADLEY 1756-DNB Used Working Scanner Module

Product Overview

This listing includes a lot of 3 units of the Allen-Bradley 1756-DNB, a high-performance ControlLogix DeviceNet Bridge Module. This module acts as a specialized communication link, allowing a ControlLogix controller to interface directly with a DeviceNet network. It manages the exchange of I/O data, configuration information, and diagnostics between the controller and various field devices such as motor starters, sensors, and variable frequency drives. As Used Working units, this lot provides a cost-effective solution for expanding or maintaining large-scale industrial communication networks within the Rockwell Automation ecosystem.

Key Features

• DeviceNet Connectivity: Each module supports a full DeviceNet network, managing up to 64 nodes (including the bridge itself) with high-speed data throughput.
• Master/Slave Capability: Can function as a DeviceNet Master (Scanner) to control devices or as a Slave to share data with other master controllers on the network.
• ControlLogix Integration: Designed for seamless installation into any standard 1756 ControlLogix chassis, utilizing the high-speed backplane for data synchronization.
• Bridging & Routing: Supports CIP (Common Industrial Protocol) routing, allowing for remote programming and configuration of DeviceNet devices across different network layers (e.g., EtherNet/IP to DeviceNet).
• Comprehensive Diagnostics: Features a 4-character scrolling LED display on the front panel to provide real-time status updates, node addresses, and detailed error codes.
• Hot-Swappable: Supports Removal and Insertion Under Power (RIUP), allowing for module replacement without shutting down the entire chassis.

Item Condition (Used Working)

• Functional Status: Used Working. All 3 modules have been professionally bench-tested in a ControlLogix rack. The scrolling LED displays are crisp, and the DeviceNet communication ports have been verified for network activity.
• Physical State: Good industrial condition. The circuit boards are clean, and the backplane connectors are free of bent pins or oxidation. The front plastic covers and latches are intact.
• Technical Integrity: No "Bus Off" or internal hardware faults were detected during testing. Each module has been handled in an ESD-safe environment and is ready for node address assignment and network commissioning.
• Note: Professional installation is recommended. Please ensure you have the appropriate 5-pin linear DeviceNet connectors for your field wiring, as these are sold as the module units only.

Package Includes

1. 3 x Allen-Bradley 1756-DNB ControlLogix DeviceNet Bridge Modules