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- Allen Bradley
- 1768-CNBR
- CompactLogix ControlNet Redundant Bridging Module
- USA
- 132 x 56.7 x 105.1 mm
- 0.293 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
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- 24-Hour Service
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Allen Bradley 1768-CNBR is a CompactLogix ControlNet Redundant Bridging Module designed to provide highly reliable network connectivity for industrial automation systems. It ensures seamless communication between multiple ControlNet networks and CompactLogix controllers while offering redundancy for continuous operation in critical environments. This module is ideal for applications where network uptime and deterministic communication are essential.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model Number | 1768-CNBR |
| Product Type | CompactLogix ControlNet Redundant Bridging Module |
| Function | Redundant ControlNet network bridging |
| Dimensions (L x W x H) | 132 × 56.7 × 105.1 mm |
| Weight | 0.293 kg |
| Communication Protocol | ControlNet |
| Network Connections | Dual-port redundant network connection |
| Mounting | Panel or DIN rail |
| Power Supply | 24 V DC |
| Environment | Industrial-grade |
| Data Rate | Up to 5 Mbps |
| Status Indicators | LEDs for module and network status |
Function and Working Principle
The 1768-CNBR functions as a redundant bridging module to maintain uninterrupted ControlNet connectivity. Its primary functions include:
- Bridges multiple ControlNet segments to CompactLogix controllers
- Provides redundancy to ensure continuous network operation
- Maintains deterministic high-speed data transmission
- Monitors network health with integrated diagnostic LEDs
By bridging ControlNet devices with redundancy, it allows uninterrupted communication and improved system reliability in critical automation environments.
Role in Industrial Control Systems
The 1768-CNBR is a core component for fault-tolerant automation networks:
- Connects ControlNet networks to CompactLogix controllers with redundancy
- Supports continuous operation in distributed and complex automation systems
- Ensures real-time data integrity and synchronization
- Facilitates modular system expansion while maintaining reliability
Industrial Applications
The Allen Bradley 1768-CNBR is commonly used in:
- High-availability manufacturing and process automation
- Chemical, oil & gas, and power generation plants
- Packaging, material handling, and assembly line automation
- Redundant network setups in critical industrial systems
- Distributed control networks requiring fault-tolerant operation
Its industrial-grade design ensures reliable operation under demanding conditions.
Installation and System Integration
For optimal performance:
- Mount in control cabinets or on DIN rails per layout requirements
- Connect redundant ControlNet cables to the module ports
- Provide 24 V DC power supply according to specifications
- Monitor module and network status through LEDs
- Configure and program using RSLogix 5000 / Studio 5000 for seamless redundancy
Proper installation ensures uninterrupted network bridging and reliable communication.
Compatible System Components
The 1768-CNBR works seamlessly with:
- CompactLogix controllers (1768-Lx series)
- ControlNet I/O modules and adapters
- Remote I/O devices with redundant network support
- Human-machine interfaces (HMIs) and supervisory systems
- Actuators and relay modules for critical automation
Together, these components ensure a robust and redundant automation network.
Recommended Alternative Models
| Model Number | Type | Key Feature / Advantage | Application |
|---|---|---|---|
| 1768-CNB | ControlNet Bridging Module | Standard bridging with CompactLogix | Distributed systems |
| 1768-CNBR | Redundant Bridging Module | Redundant network support | Critical industrial systems |
| 1768-L4x | CompactLogix Controller | Integrated ControlNet support | Small to medium automation |
| 1756-CNB | ControlNet Bridge for ControlLogix | High-performance bridging | Large-scale automation |
Key Advantages
- Provides redundant bridging between ControlNet networks and CompactLogix controllers
- Ensures high-speed, deterministic communication with network fault tolerance
- Integrated diagnostics and status monitoring via LEDs
- Supports modular and scalable automation network design
- Industrial-grade construction suitable for continuous operation
Technical FAQs
Q1: What is the main function of the 1768-CNBR?
A1: It is a redundant ControlNet bridging module that connects CompactLogix controllers with ControlNet networks, ensuring uninterrupted communication.
Q2: How does redundancy improve network reliability?
A2: By providing dual network paths, the module maintains communication even if one network segment fails, ensuring continuous operation.
Q3: Is it compatible with standard CompactLogix controllers?
A3: Yes, it integrates with 1768-Lx series controllers to provide seamless network bridging and redundancy.
Conclusion
The Allen Bradley 1768-CNBR CompactLogix ControlNet Redundant Bridging Module is essential for critical industrial automation networks requiring fault-tolerant and deterministic communication. Its redundancy, diagnostics, and industrial-grade construction make it ideal for high-availability and distributed control systems, ensuring reliable operation and network uptime.