Allen Bradley 1756-CNB ControlLogix Communication Module

Release time	Jun 3, 2026
Brand	Allen Bradley PLC
Product Numbe	1756-CNB
Country Of Origin	USA
Dimensions	144.5 × 34.6 × 130.18 mm
Weight	0.26 kg
Condition	New & In Stock
Payment Methods	T/T, PayPal, Western Union
Lead Time	1-3 Working Days
Warranty	One Year
Courier partners	DHL, UPS, TNT, FedEx and EMS.

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Overview

The Allen Bradley 1756-CNB is a ControlLogix communication module designed to provide high-speed ControlNet connectivity for industrial automation applications. It enables reliable data exchange between controllers, I/O systems, and networked devices, helping improve communication efficiency and system performance.

General Information

Part Number: 1756-CNB

Manufacturer: Allen Bradley

Brand / Country of Origin: Allen Bradley / United States

Series: ControlLogix

Type: ControlNet Communication Module

Mounting: Chassis-mounted

Technology: ControlNet communication and network management

Power Specifications

Supply Voltage: 5.1 V DC (backplane)

Current Consumption: 970 mA @ 5.1 V DC

Power Consumption: Approximately 5 W

Power Source: ControlLogix backplane

Protection Features: Internal electronic protection

Status Indicators: Module status, network status, and channel activity LEDs

Communication & Interface

Communication Protocol: ControlNet

Network Connections: Dual ControlNet BNC ports

Data Transfer: Scheduled and unscheduled messaging

Network Functions: Controller-to-controller communication and remote I/O connectivity

Diagnostics: Integrated network monitoring and fault detection

Configuration: Software-based configuration through ControlLogix programming tools

Environmental

Operating Temperature: 0 to +60 °C

Storage Temperature: -40 to +85 °C

Relative Humidity: 5% to 95%, non-condensing

Protection Rating: Suitable for installation within industrial control cabinets

Environmental Compliance: Designed for industrial automation environments

Dimensions & Weight

Dimensions (L × W × H): 144.5 × 34.6 × 130.18 mm

Weight: 0.26 kg

Ready to Ship!

QDo you provide technical support or installation services?

A Yes, we offertechnical supportfor installation, configuration, and troubleshooting.

QCan I return products if they don’t meet my requirements?

A Returns are accepted within30 daysif the product is unused, unopened, and in its original packaging. Return shipping costs are the buyer's responsibility.

QHow can I ensure compatibility with my existing systems?

A If unsure, please provide yoursystem details, and our support team will verify compatibility before purchase.

QAre there discounts for new wholesale customers?

A We occasionally offerpromotional discountsfor new wholesale customers. Contact us for current offers.

QCan I purchase different quantities of a product?

A Yes, we offerflexible ordering options, whether you need a single unit or a large batch.

QWhat payment methods do you accept for wholesale orders?

A We accept various methods, includingbank transfers (T/T), letters of credit (L/C), and more upon agreement.

QCan I get discounts for bulk purchases?

A Yes, we offercompetitive pricingfor bulk purchases. Contact our sales team for a custom quote.

QWhat is the minimum order quantity (MOQ)?

A The MOQ is usuallyone unit. For bulk orders, please contact us for discounts and pricing details.

QHow long does shipping take?

A Shipping times vary by location. With our16 global warehouses, we strive for fast delivery. Contact us for an estimated delivery time.

QHow can I verify the product before purchasing?

A We can provide high-resolution product images upon request, and our team can arrange warehouse photos for verification.

QDoes this product come with a warranty?

A Yes, we provide a1-year warrantyand support returns and exchanges to protect your rights.

Company Information
E-mail		[email protected]
Mobile		+8613620394314
Whatsapp		+8613620394314
WeChat		+8613620394314
Add		Room 1102, Jiuzhou Commercial Building, Siming District, Xiamen, China

Warranty Conditions

At Qunlebu Co., Ltd., we are committed to ensuring the quality of our products. Our one-year warranty provides coverage for any defects in material or workmanship, excluding damages caused by deliberate misuse.

🛡️Coverage Details:

This warranty encompasses all instances of product malfunction or failure due to inherent manufacturing flaws, with the exception of intentional damage.

📝Claim Process:

To avail of warranty services, please notify us of any quality-related issues within the warranty period. We may conduct online troubleshooting and examination as needed.

🚚Shipping Assistance:

We understand the importance of prompt service. Therefore, we cover return shipping costs for warranty-related returns within the first month of supply. Within three months of supply, we cover one-way shipping costs for warranty-related returns. After three months, the customer is responsible for shipping costs both ways.

🚫Exclusions:

Unauthorized modifications, repairs, or misuse of the product.

Normal wear and tear.

Negligence.

Extreme environmental conditions beyond product specifications.

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