Manufacturer: Allen-Bradley
Product No.: 1756-CNBR
Country of origin:United States
Product Type: ControlLogix Communication Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 320g
Dimensions: 130 mm x 145 mm x 35 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months
The Allen-Bradley 1756-CNBR is a ControlLogix ControlNet interface module designed to provide high-speed, deterministic communication and media redundancy for ControlLogix chassis architectures. Operating within a ControlLogix system chassis, the module handles real-time data transfer, network scheduled connections, and backplane interface diagnostics. The 1756-CNBR module features dual ControlNet ports for redundant-media configurations, enabling reliable communication links across process control architectures and remote I/O layouts. Up to five ControlLogix controllers can establish rack optimization connections to a single remote adapter module.
| Catalog Number | Description |
|---|---|
| 1756-CNB/D | ControlLogix ControlNet Interface Module, Single-Media, Series D |
| 1756-CNBR/D | ControlLogix ControlNet Interface Module, Redundant-Media, Series D |
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Catalog Number | 1756-CNBR |
| Module Type | ControlNet Interface Module (Redundant-Media) |
| Series | Series D |
| Diagnostic Display | 4-character scrolling display |
| Internal Counters | 16-bit minor fault counters (Bandwidth, Network Error, ControlBus Receive Error, ControlBus Address Error) |
| Unconnected Buffers | Up to 20 client buffers and 20 server buffers |
| Rack Optimization Limit | Maximum 5 controllers per remote adapter module |
Global Express Shipping
Returns & Warranty
| Product Image | Model Number / Title | Condition | Availability | Action |
|---|---|---|---|---|
|
Allen-Bradley 1756-CNB ControlLogix ControlNet Bridge Communication Module | Original New | In Stock | View Details |
|
Allen-Bradley 1747-SDN SLC 500 DeviceNet Communication Scanner Module | Original New | In Stock | View Details |
|
Allen-Bradley 1756-OW16I ControlLogix 16-Point Isolated Relay Contact Output Module | Original New | In Stock | View Details |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Black
|
| Country of origin |
United States
|
| Power source |
DC Power
|
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