Allen-Bradley 1756-CNBR/D Redundant Communication Bridge Module
Working voltage: 12-30V DC.
Current consumption: 970mA at 5.1V DC and 1.7mA at 24V DC.
Isolation voltage: 30V (continuous).
Continuous power consumption: maximum 5.5W.
Communication protocol: Supports ControlNet protocol and is compatible with DeviceNet protocol.
Data transmission rate: up to 1Mbps.
Number of channels: 2.
Port type: RJ45.
Size: 5.51 x 4.41 x 5.71 inches (approximately 139.9 x 112 x 145mm).
Weight: 0.293kg.
Working temperature range: -40 ° C to+70 ° C or -40 ° C to+85 ° C.
Protection level: Open shell, some models have normal coating protection, which can resist environmental pollutants such as dust and moisture.
RFI suppression: In terms of radiation, it is 10V/m (1kHz sine wave, 80% amplitude modulation) in the range of 80-2000MHz; In terms of conduction, it is 10Vrms (1kHz sine wave, 80% amplitude modulation) within the range of 150kHz-80MHz.
Product Performance
High reliability: Adopting a redundant design, providing dual redundant connections to ensure that in the event of a failure in one link, the other link can continue to operate, ensuring uninterrupted system operation and reducing downtime.
Strong anti-interference ability: equipped with advanced isolation technology and RFI suppression function, it can effectively prevent electrical interference and electromagnetic interference, and maintain stable communication and high-performance data transmission even in harsh industrial electromagnetic environments.
Efficient data transmission: Supports high-speed data transmission, up to 1Mbps, which can meet the high real-time requirements of industrial automation systems. It enables fast data exchange between controllers and multiple devices, improving system response speed and operational efficiency.
Easy to integrate: It can be easily integrated into existing ControlLogix systems. The open shell design is easy to install and maintain, and supports multiple installation methods such as chassis installation, panel installation, etc., making it convenient for users to flexibly configure according to their actual needs.
Wide compatibility: Compatible with various industrial protocols such as ControlNet and DeviceNet, it can communicate and interact with devices from different manufacturers, enhancing the flexibility and scalability of the system, and facilitating the construction of complex industrial automation networks.













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