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Allen Bradley ControlLogix 1756-CNBK

Product image is representative; revision or series may vary. Contact us to request a specific version.

1756-CNBK

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The 1756-CNBK is a communication module from Allen Bradley's ControlLogix series, designed for use with ControlNet systems. This device features a conformal coating for protection and includes a 1-meter tap connection cable.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1756-CNBK

ManufacturerAllen Bradley
Product TypeCommunication Module
Product LineControlLogix
Part Number1756-CNBK
Weight0.88 lbs (0.40 kg)
UPC889508895383
CommunicationControlNet
Conformal CoatingYes
Connection Cable1 m Tap
Interface1 ControlNet BNC
Channels1 Channel
Connections40 to 48
Temperature CodeT4
Current Draw @ 5 V970 mA
Current Draw @ 24 V1.7 mA
Isolation Voltage30 V Continuous
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The Allen Bradley 1756-CNBK functions as an essential communication module within the ControlLogix series. It is specifically designed for integration with ControlNet communication networks. A notable aspect of this module is its protective conformal coating, which enhances its durability in various operating conditions. Accompanied by a connection cable that measures 1 meter, it allows for straightforward installation and connectivity.

Equipped with a single ControlNet BNC interface, this module can manage one channel. Its capability extends to supporting 40 to 48 individual connections, making it versatile in complex systems. Power management is important, and the 1756-CNBK draws 970 mA when supplied with 5 V and a mere 1.7 mA at 24 V. Additionally, it features a continuous isolation voltage rating of 30 V, ensuring reliable operation across potential differences.

With a temperature code of T4, this module is well-suited for environments that demand resilience. Overall, the 1756-CNBK serves as an efficient communication solution for control systems requiring robust connectivity and performance.