Allen-Bradley 1756-CNB ControlNet Bridge

Allen-Bradley 1756-CNB ControlNet Bridge Module

Connect your ControlLogix system to ControlNet networks. The 1756-CNB bridge module enables high-speed data exchange. It links your controller to I/O devices across your facility. This module supports both scheduled and unscheduled messaging. It is perfect for standard control applications. Build a reliable network with this proven solution.

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Model Number: 1756-CNB/B
• Series: ControlLogix
• Module Type: ControlNet Bridge
• Data Rate: 5 Megabits/second
• Maximum Nodes: 99
• Maximum Connections: 64
• Voltage Consumption: 970mA @ 5.1V DC, 1.7mA @ 24V DC
• Power Dissipation: 5.1 Watts
• Thermal Dissipation: 17.4 BTU/hour
• Communication Ports: 1 BNC, 1 RJ45 (8-pin shielded)
• Chassis Slots: 1
• Weight: 0.57 lbs (0.26 kg)
• Operating Temperature: 0-60°C (32-140°F)
• Certifications: UL, CE, cULus
• Warranty: 12 Months

Frequently Asked Questions

• Q: What is the main purpose of the 1756-CNB module?
  A: It connects ControlLogix processors to ControlNet networks for distributed I/O control.
• Q: Can I use this module for redundant systems?
  A: No, the 1756-CNB is for standard applications. For redundancy, choose the 1756-CNBR model.
• Q: How do I set the node address on this module?
  A: Use the rotary switches on the front panel to set a unique address from 01-99.
• Q: What types of connections does this module support?
  A: It handles both scheduled (real-time) and unscheduled (message) connections.
• Q: Is special software needed to configure this module?
  A: Yes, you use Rockwell’s Studio 5000 or RSNetWorx for ControlNet configuration.