Allen-Bradley 1756-CNB: Reliable ControlNet Bridge for Industrial Networks
The Allen-Bradley 1756-CNB connects your ControlLogix system to ControlNet networks. This bridge module enables fast data exchange between devices. It supports both scheduled and unscheduled communication. The 1756-CNB ensures smooth operation in demanding industrial environments.
Key Features & Benefits
- High-Speed Network: 5 Mbps ControlNet communication
- Multiple Connections: 64 bidirectional connections supported
- Flexible Integration: Works with various Allen-Bradley platforms
- Easy Configuration: Simple node address setup
- Reliable Performance: Stable data transfer for critical applications
Technical Specifications
- Brand: Allen-Bradley / Rockwell Automation
- Model: 1756-CNB ControlNet Bridge
- Network Speed: 5 megabits per second
- Maximum Nodes: 99 nodes per network
- Connection Capacity: 64 bidirectional connections
- Communication Ports:
- 1 BNC connector for coaxial cable
- 1 RJ-45 NAP port for twisted pair
- Current Consumption:
- 970 mA at 5.1V DC
- 1.7 mA at 24V DC
- Power Rating: 5.1 watts maximum
- Heat Dissipation: 17.4 BTU per hour
- Message Buffers: 20 unconnected message buffers
- Logix Connections: 40-48 connections per module
- Node Addressing: 01 to 99 via front switches
- Slot Requirement: Single slot installation
- Weight: 0.57 pounds (0.26 kilograms)
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
Installation & Setup
- Install in any ControlLogix chassis slot
- Set unique node address from 01 to 99
- Connect using coaxial or twisted pair cable
- Configure network parameters in software
- Verify connections and network status
- Monitor through front display panel
Package & Shipping
- One 1756-CNB ControlNet bridge module
- Installation and configuration guide
- 12-month quality warranty
- Fast shipping via FedEx, UPS, DHL
- Secure packaging for safe delivery
Expert FAQ
How many devices can connect to this bridge?
It supports up to 99 nodes on the ControlNet network.
What types of communication does it handle?
Both scheduled I/O data and unscheduled messaging.
Can I use multiple bridge modules together?
Yes, you can add modules in the same chassis for more connections.
What cable types are supported?
Coaxial cable via BNC and twisted pair via RJ-45.
How do I set the node address?
Use the front panel switches to set address from 01 to 99.
Product Resources
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