Allen-Bradley 1756-CNBR ControlNet Module – Reliable High-Speed Communication for ControlLogix

Product Overview

The Allen-Bradley 1756-CNBR is a high-performance ControlNet communication module designed for Rockwell Automation's ControlLogix systems. This industrial-grade module delivers 5 Mbps communication speed with dual ports for flexible network configurations.

Key Features

• 5 Mbps high-speed data transfer for real-time control
• Two ControlNet ports for redundant network connections
• Supports 64 simultaneous connections and 99 nodes
• Compact design (5.51 x 4.41 x 5.71 in) for space-efficient installation
• Works with standard 1786-RG6 coaxial cable

Technical Specifications

• Brand: Allen-Bradley
• Model: 1756-CNBR
• Series: ControlLogix
• Communication Speed: 5 Mbps
• Operating Temperature: 32-140°F (0-60°C)
• Power Requirements: 5.1V DC (970mA), 24V DC (1.7mA)
• Isolation Voltage: 30V continuous
• Weight: 0.64 lbs (0.293 kg)

Installation & Compatibility

• Fits standard ControlLogix chassis (slot width: 1)
• Tool-free mounting design
• Compatible with 1786-RG6 quad-shield coaxial cable

Diagnostics & Maintenance

• LED status indicators for real-time monitoring
• Hot-swappable design minimizes downtime
• Easy firmware updates via Rockwell software

Certifications & Support

• CE and RoHS compliant
• 12-month warranty included
• Technical support available

Shipping Information

• Fast worldwide delivery via FedEx, UPS, or DHL
• Typically ships within 1-2 business days

Frequently Asked Questions

• Q: What cable does this module require?
  A: 1786-RG6 quad-shield coaxial cable
• Q: How many nodes can it support?
  A: Up to 99 nodes per network
• Q: Is this module hot-swappable?
  A: Yes, for easy maintenance

Package Contents

• 1x 1756-CNBR communication module
• Installation documentation
• Warranty information

Limited inventory available – Order today for fast delivery!