1756-CNB Allen-Bradley ControlLogix ControlNet Bridge Module Single Port BNC Communication Module

Description:

• Genuine Allen-Bradley ControlLogix ControlNet bridge module for high-speed industrial communication networks
• Provides ControlNet connectivity between ControlLogix controllers, remote I/O, HMIs, drives, and other ControlNet devices
• Features one ControlNet BNC port and one Network Access Port (NAP RJ45) for network configuration and maintenance
• Supports 5 Mbps deterministic ControlNet communication for time-critical industrial applications
• Supports up to 64 ControlNet connections and 40–48 Logix communication connections
• Installs in any slot of a ControlLogix 1756 chassis
• Ideal for distributed I/O, PLC networking, process automation, manufacturing, material handling, and industrial control systems
• Discontinued by Rockwell Automation as of December 31, 2024. The recommended engineering replacement is the 1756-CN2.

Specifications:

• Manufacturer Name: Allen-Bradley (Rockwell Automation)
• Part Number (MPN): 1756-CNB
• Product Series: ControlLogix
• Product Type: ControlNet Bridge Module
• Communication Protocol: ControlNet
• Communication Speed: 5 Mbps
• ControlNet Ports: 1 × BNC
• Network Access Port (NAP): 1 × RJ45
• Maximum ControlNet Nodes: 99
• Maximum Connections Supported: 64
• Logix Communication Connections: 40–48
• Current Draw:
  • 970 mA @ 5.1 VDC
  • 1.7 mA @ 24 VDC
• Power Dissipation: 5.1 W
• Thermal Dissipation: 17.4 BTU/hr
• Isolation Voltage: 30V Continuous
• Mounting Type: ControlLogix Chassis (Any Slot)
• Operating Temperature: 0°C to +60°C (32°F to 140°F)
• Storage Temperature: -40°C to +85°C (-40°F to 185°F)
• Relative Humidity: 5–95% Non-Condensing
• Protection Rating: Open Style
• Country of Origin: United States
• Certifications:
  • UL Listed
  • CSA Certified
  • CE
  • ATEX
  • IECEx
  • FM Approved
  • RCM
• Applications:
  • ControlNet Networks
  • Distributed I/O
  • PLC Communication
  • Process Control
  • Industrial Automation
  • Manufacturing Systems
  • Machine Control

Dimensions:

• Height: 145 mm (5.71 in)
• Width: 38 mm (1.50 in)
• Depth: 140 mm (5.51 in).

Weight:

• Approximate Weight: 0.26 kg (0.57 lb).