Allen Bradley 1756-DNB ControlLogix Communication Module

The AB 1756-DNB is a high-performance DeviceNet bridge and scanner module designed for use within ControlLogix systems. It supports both master (scanner) and slave modes, providing reliable communication between DeviceNet devices and Logix-based controllers. With features such as Automatic Device Replacement (ADR), Explicit Messaging, and diagnostic capabilities, it streamlines device commissioning and maintenance.

This module supports a single DeviceNet channel through a 5-pin Phoenix connector and fits seamlessly into any ControlLogix chassis, making it a robust and scalable solution for DeviceNet integration across industrial automation applications.

Technical Specifications

Model: 1756DNB
Series: ControlLogix
Type: DeviceNet Bridge/Scanner Communication Module
Communication Channel: 1 x DeviceNet
Connector Type: 5-pin Male Phoenix Plug
Compatibility: ControlLogix Chassis
Supported Modes: Scanner and Slave

Electrical Specifications

Supply Voltage: Via ControlLogix backplane
Power Consumption: 5.1V DC, 640 mA (typical)
Isolation Voltage: 850V DC (channel to system)
Communication Protocols:
• DeviceNet (primary)
• TCP/IP (supported)

Not Supported:
• EtherNet/IP
• MODBUS
• PROFIBUS
• Data Highway

Mechanical Specifications

Width: 35 mm
Height: 145 mm
Depth: 140 mm
Mounting Type: ControlLogix Chassis Slot
Connector Type: Phoenix Plug

Environmental Specifications

Operating Temperature: 0°C to 60°C
Storage Temperature: -40°C to 85°C
Relative Humidity: 5% to 95% non-condensing
IP Rating: IP20 (when installed in chassis)
Conformal Coating: No

Compliance & Certifications

CE Marked: Yes
UL Listed: Yes
RoHS Compliant: Yes
Certifications: c-UL, ATEX (when specified by variant)
Industrial Standards: EN 61131-2

Key Features & Benefits

✅ DeviceNet Communication Bridge – Seamless communication between ControlLogix controllers and DeviceNet networks

✅ Scanner and Slave Capable – Supports both master and slave roles for maximum network flexibility

✅ ADR Support – Enables automatic replacement of failed nodes without reconfiguration

✅ Explicit Messaging Support – Facilitates diagnostic and maintenance operations over DeviceNet

✅ Compact and Robust – Designed for ControlLogix chassis with Phoenix plug connectivity

📦 Order the Allen Bradley 1756-DNB from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 1756-DNB prices. This DeviceNet bridge and scanner module is perfect for your ControlLogix system, enabling fast, reliable communication and simplified device management.

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Streamline your DeviceNet integration with Drive Outlet Megastore — your trusted Allen Bradley supplier.