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SKU:1756-CNBR
ControlNet Bridge Module 1756-CNBR | Allen-Bradley Redundant
Manufacturer: Allen-Bradley
Product No.: 1756-CNBR
Product Type: Communication Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 293g
Shipping port: Xiamen
Warranty: 12 months
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Tavsif
Allen-Bradley ControlLogix ControlNet Redundant Bridge Module 1756-CNBR
The Allen-Bradley 1756-CNBR is a high-availability communication bridge for ControlNet networks. It provides dual media ports for simplex or redundant network configurations, ensuring robust data transfer.
Core Specifications
- Brand & Model: Allen-Bradley 1756-CNBR
- Series: ControlLogix ControlNet Communication Module
- Function: Redundant Media Bridge
- ControlNet Ports: 2 BNC Connectors (for redundant/simplex media)
- Network Access Port (NAP): 1 RJ-45 (8-pin) for local programming
- Data Rate: 5 Mbps
- Max Connections: 64 total (supports 40-48 Logix connections)
- Max Nodes: 99 per network
- Backplane Current: 970 mA @ 5.1V DC, 1.7 mA @ 24V DC
Installation & Compatibility
- Compatible Chassis: 1756-A4, A7, A10, A13, A17 ControlLogix racks.
- Power Supplies: Works with standard (e.g., 1756-PA75) and redundant (e.g., 1756-PA75R) supplies.
- Slot Requirement: Occupies 1 slot in the chassis.
- Communication Cable: Requires 1786-RG6 quad-shield coaxial cable and ControlNet taps.
- Important: Correctly label tap drop cables to prevent segment reversal and network issues.
Physical & Environmental
- Dimensions: 5.51" x 4.41" x 5.71" (140 x 112 x 145 mm approx.)
- Weight: 0.64 lbs (0.293 kg)
- Operating Temperature: 32° to 140°F (0° to 60°C)
- Power Dissipation: 5.5 Watts Max (17.4 BTU/hour)
- Isolation Voltage: 30V Continuous
- Enclosure: Open Type (for chassis mounting)
Packaging & Shipping
- One Allen-Bradley 1756-CNBR bridge module.
- Standard protective packaging.
- Shipped via FedEx, UPS, or DHL.
FAQ
-
What is the difference between 1756-CNB and 1756-CNBR?
The 1756-CNBR has two ControlNet BNC ports to support redundant media, while the 1756-CNB has only one port for simplex networks. -
What is the Network Access Port (NAP) used for?
The RJ-45 NAP port is used for local programming, configuration, and diagnostics of the module using a laptop or programming device. -
Can this module be used in a non-redundant network?
Yes, it can be used in a standard simplex ControlNet network using just one of its two BNC ports.
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