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OVERVIEW
Official designation: Allen-Bradley 1768-CNB (1768 CompactLogix, ControlNet Communication Module)
Role/Application: This bridge module facilitates deterministic ControlNet networking and redundant media support for 1768 CompactLogix controller systems.
KEY SPECS SUMMARY
Power: 928mA at 5.1V DC
Interfaces / Ports: Dual BNC, One RJ45
Indicators: Module, Net, OK LEDs
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: 1768 CompactLogix
Limit: 48 Logix connections
Lifecycle: End of Life
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the maximum number of ControlNet nodes supported by the 1769-CNB?
A: It supports up to 99 nodes on a single ControlNet network segment.
Wiring & Installation:
Q: How are the redundant media ports connected on the 1768-CNB module?
A: Use high-quality RG-6 coaxial cables with BNC connectors for ports A and B.
Troubleshooting & Compatibility:
Q: What does a steady red OK LED indicate on the module faceplate?
A: This indicates a non-recoverable hardware fault requiring module replacement.
Replacement & Upgrades:
Q: Is the 1768-CNB compatible with standard 1769-L3 series controllers?
A: No, it is exclusively designed for the 1768-L4x controller backplane.
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| After-sales Service Contact or Customer Support Number | See this page for details |
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