Product Details
Product Overview
The Allen Bradley 1768-CNBR functions as a high-performance communication interface for the CompactLogix™ platform. This module enables a 1768-L4x controller to bridge data between the local backplane and a ControlNet network. We supply this unit as 100% Brand New and Original, providing the "R" suffix capability for redundant media support. It serves as a critical link for deterministic, repeatable data transfers in complex distributed I/O architectures and multi-controller interlocking.
Technical Specifications
The 1768-CNBR integrates high-speed networking into the CompactLogix chassis with the following parameters:
| Feature | Specification |
| Module Type | ControlNet Bridge Module |
| Redundancy Support | Dual BNC Connectors (Media Redundancy) |
| Product Line | CompactLogix |
| Communication Rate | 5 Mbps |
| Backplane Compatibility | 1768 Series Chassis |
| Series | A and B |
| Weight | 0.56 lbs (0.26 kg) |
| UPC | 612598307500 |
| UNSPSC | 32151705 |
Engineering Advantages
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Redundant Media Security: The "R" designation signifies support for redundant ControlNet media. The dual BNC ports allow for a secondary cable path. If a cable break occurs, the module switches paths instantly without interrupting the control process, preventing costly system downtime.
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Deterministic Data Execution: Unlike standard Ethernet, the 1768-CNBR utilizes the ControlNet protocol to ensure time-critical I/O data arrives at fixed intervals. This eliminates network collisions and "jitter," providing the precision required for high-speed motion and synchronized machinery.
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Streamlined ControlNet Bridging: The module acts as a transparent gateway, allowing your CompactLogix controller to communicate with remote 1794 FLEX™ I/O or 1715 Redundant I/O racks. It offloads communication tasks from the main CPU, maintaining high logic execution speeds.
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Hot-Swappable Configuration: The hardware supports Removal and Insertion Under Power (RIUP). Engineers can replace a module without shutting down the entire rack power, significantly reducing mean time to repair (MTTR) during maintenance cycles.
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Rugged 1768 Chassis Fit: The module slides directly into the high-speed 1768 bus. This dedicated bus structure provides higher bandwidth than standard 1769 backplanes, facilitating rapid data exchange between the bridge and the L43 or L45 processors.
FAQs
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Does the 1768-CNBR require an external power supply?
No. The module draws its operating power directly from the 1768 backplane. Ensure your system power supply (such as a 1768-PA3 or PB3) has sufficient capacity for the communication bridge and the controller.
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Can I use this module in a 1769-only CompactLogix system?
No. The 1768-CNBR specifically requires a 1768-L43 or 1768-L45 controller and a 1768 series chassis. It will not physically fit or function in a standard 1769-series CompactLogix rack.
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Is this a refurbished or used unit since the series is discontinued?
We guarantee this 1768-CNBR is 100% Brand New and Original. It remains in its factory-sealed Allen Bradley packaging with the verifiable UPC (612598307500) and quality control seals intact.
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How do I set the network address for this module?
You set the ControlNet node address via the two rotary switches located on the side of the module. Ensure you select a unique address (1 to 99) before inserting the module into the chassis.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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