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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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Allen-Bradley ControlNet Communications Bridge Module 1756-CNB/D 24 VDC

$1,800.00 USD

Sale Sold out

ConditionSurplus Original Packaging – Opened MPN1756-CNB/D Stock #0526-02424

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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The Allen-Bradley 1756-CNB/D is a ControlNet Communications Bridge module from the ControlLogix 1756 I/O platform, designed to interface a ControlLogix chassis with a ControlNet network. The module installs into a single slot of a 1756 chassis and provides a single ControlNet channel for connecting ControlLogix processors, remote I/O, and other ControlNet enabled devices across a deterministic, scheduled network. Catalog number 1756-CNB/D, Series D, Catalog Revision J02, Firmware Revision 05.32, Part Number 96390074 B01, Serial Number 001BC085. The module carries a current draw rating of 970 mA at 5.1 VDC and 7 mA at 24 VDC as marked on the nameplate. Approvals visible on the nameplate include CE, CSA, FM, and ATEX, with Class I, Division 2 hazardous location suitability. Manufactured in the U.S.A. Application areas include factory automation, process control, packaging, material handling, automotive, food and beverage, and other ControlLogix based industrial systems where ControlNet connectivity is required. The 1756-CNB platform is commonly used as a bridge between a ControlLogix chassis and remote ControlNet I/O, or to extend ControlLogix communications between racks. The unit is supplied in original Allen-Bradley packaging with the factory anti-static bag and outer carton bearing the matching catalog number, series, and firmware revision markings.

Stock # 0526-02424

Please Note: This unit is surplus inventory, sold as-is from MRO Exchange surplus stock. Allen-Bradley is a trademark of Rockwell Automation, Inc. MRO Exchange is an independent reseller and is not an authorized distributor of Rockwell Automation. Product may differ from units available through authorized distributors in date code, country of origin, packaging, accessories, or firmware revision. The warranty from the manufacturer does not apply.

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.