Allen-Bradley 1756-CNB/E ControlNet Bridge Module Firmware 11.003
- Brand: Allen-Bradley / Rockwell Automation
- Model Number: 1756-CNB
- Series: E
- Firmware Version: 11.003
- MPN: 1756-CNB/E
- Product Category: Communication Modules
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The Allen-Bradley 1756-CNB/E (Series E) is a high-performance communication bridge module that works with the ControlLogix® platform. It is an important link for quickly and reliably sending data between a ControlLogix chassis and a ControlNetâ„¢ network. For real-time I/O messaging and interlocking between controllers with Firmware 11.003, this module works better.The Series E hardware can work with complicated industrial networks and handle up to 64 communication connections. The 1756-CNB/E keeps your automation system in perfect sync and always works, whether you’re connecting data between different ControlNet segments or managing remote I/O.
The 1756-CNB/E acts as a gateway, allowing the controller to control I/O modules across a ControlNet link. It effectively “bridges” the backplane of the ControlLogix chassis to the ControlNet network cable. This module is essential for applications requiring scheduled (deterministic) data delivery, which is a hallmark of the ControlNet protocol.
Specifications
| Description | Specification |
|---|---|
| Network Support | ControlNet |
| Communication Rate | 5 Mbps |
| Connections | 64 Max (40–48 Logix Connections) |
| Number of Nodes | 99 Max |
| Backplane Current (5.1V DC) | 970 mA |
| Backplane Current (24V DC) | 1.7 mA |
| Power Dissipation | 5.1 Watts |
| Thermal Dissipation | 17.4 BTU/hr |
| Isolation Voltage | 30V (Continuous), Basic Insulation Type |
| Slot Width | 1 (Single Slot) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
Industrial Applications
1) Distributed I/O Systems connect remote I/O racks to a central ControlLogix processor.
2) Controller Interlocking: In a big plant, multiple PLCs can share tags that are produced and used.
3) SCADA Connectivity: Making it possible for HMI and SCADA systems to get to controller data.
4) Legacy Integration: Connecting newer Logix systems to older PLC-5® or SLC™ 500 systems on ControlNet.
Installation Guide File: View PDF
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