Allen-Bradley 1756-CN2R/B Communication Module

The Allen-Bradley 1756-CN2R/B communication module is designed for the ControlLogix controller platform. It connects various devices within a control system using the ControlNet network.

Key Features of 1756-CN2R/B

• Dual ControlNet Ports: Equipped with two ControlNet BNC ports, the module supports a data transfer rate of 5 Mbps.
• USB Port: It includes a USB port for configuration and other purposes.
• Redundancy: The 1756-CN2R/B supports redundant ControlNet topologies, ensuring enhanced system reliability.
• Logix Connections: It can establish up to 128 Logix connections for better control.
• Isolation: The module provides 30V DC isolation between ControlNet and the system.
• Physical Characteristics: It fits into a standard ControlLogix chassis and uses a standard ControlLogix power supply.

Technical Specifications

• ControlNet Ports:
  • Number: 2
  • Connector: BNC
  • Data Rate: 5 Mbps
• USB Port:
  • Data Rate: 12 Mbps
• Power Requirements:
  • 5.1V DC: 1300mA
  • 24V DC: 3mA
• Isolation: 30V DC
• Logix Connections: Up to 128
• Physical Dimensions: Please refer to the product datasheet.

Applications of 1756-CN2R/B

The 1756-CN2R/B serves a variety of industrial automation applications:

• Connects I/O modules, HMIs, and drives to a ControlLogix controller.
• Implements distributed I/O systems for better scalability.
• Creates redundant networks, boosting system availability.

Benefits of 1756-CN2R/B

• High-speed communication: The 5 Mbps data rate delivers fast and efficient data transfer.
• Flexibility: The module suits diverse applications due to its versatile features.
• Reliability: Redundancy support maximizes system uptime.
• Ease of use: You can easily configure and integrate it into a ControlLogix system.