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1756-CN2
1756-CN2
1756-CN2
  1. 1756-CN2
  2. 1756-CN2
  3. 1756-CN2

Allen Bradley 1756-CN2 ControlNet Interface Module

£1,370.75 inc VAT

In Stock · Delivered in 5–7 Working Days
Estimated UK delivery time, subject to order confirmation, courier services and destination. International delivery times vary.
Technical SpecificationsAllen Bradley
Model 1756CN2
Series ControlLogix
Type ControlNet Communication Module
Communication Protocol ControlNet
Max Communication Speed 5 Mbps (standard for ControlNet)
ControlLogix Backplane Communication Supported
Mounting Type 1756 Chassis
Connector Type ControlNet BNC port
Mounting ControlLogix 1756 chassis slot
Weight Approx. 300 g
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Allen Bradley 1756-CN2 ControlNet Interface Module

The AB 1756-CN2 is a high-speed ControlNet communication module designed for ControlLogix systems, enabling deterministic, scheduled data transfer between controllers and distributed I/O devices. It supports up to 128 Logix connections and accommodates up to 100 ControlNet nodes , making it ideal for real-time control in large, time-critical industrial applications.

Technical Specifications

Model 1756CN2
Series ControlLogix
Type ControlNet Communication Module
Logix Connections 128
Max Network Nodes 100 ControlNet devices
Mounting Type 1756 Chassis
Application Real-time control networking for distributed I/O, drives, motion, and controllers

Electrical & Interface Specifications

Communication Protocol ControlNet
Network Interface BNC (Coaxial) or Fiber (with adapters)
Max Communication Speed 5 Mbps (standard for ControlNet)
Backplane Current Draw Approx. 500 mA @ 5.1V DC
ControlLogix Backplane Communication Supported
Redundancy Support No
Connector Type ControlNet BNC port
Bus Interface Backplane connection via chassis slot

Mechanical Specifications

Width 35 mm
Height 145 mm
Depth 140 mm
Mounting ControlLogix 1756 chassis slot
Housing Industrial-grade enclosure
Weight Approx. 300 g
Form Factor Modular slot-based design

Environmental Specifications

IP Rating IP20 (when installed)
Operating Temperature 0…60 °C
Storage Temperature -40…85 °C
Humidity 5% to 95% non-condensing
Shock Resistance 30g
Vibration Tolerance 2g from 10–500 Hz
Certifications CE, cULus, RoHS
Explosion Safety (Gas/Dust) Not rated

Compliance & Communication

ControlNet Supported Yes
Data Highway / DeviceNet / EtherNet/IP / MODBUS / PROFIBUS Not supported
Other Bus Protocols Supported via ControlNet infrastructure
RSNetWorx for ControlNet Fully supported for configuration
Diagnostic Features Network status LEDs, module status indicators
Time-Critical Data Transfer Yes – deterministic scheduled data handling
Network Redundancy Not supported on this model (use 1756-CN2R for redundancy)

Related Products & Helpful Links

Frequently Asked Questions

How can I check whether 1756-CN2 is the correct replacement?

Check the exact manufacturer part number, electrical ratings, interface type, mounting and equipment compatibility against your existing equipment and the manufacturer’s datasheet.

How quickly can 1756-CN2 be delivered?

This product is listed as in stock, with estimated UK delivery in 3–5 working days. Delivery depends on order confirmation, courier services and destination.

Where can I check specifications and compatibility?

Review the specification information above and the product’s Downloads or Data Sheets tab, where documents are supplied. Our team can help check part numbers and installation compatibility.

What warranty does Drive Outlet Megastore offer?

Drive Outlet offers its own 2-year return-to-base warranty unless otherwise stated. Manufacturer warranties may not apply; please review the Terms and Conditions before ordering.

Weight 0.3 kg

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1756-CN2_Installation-Instructions.pdf1756-CN2_Selection-Guide.pdf1756-CN2_Technical-Data.pdf
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Viewing: Allen Bradley 1756-CN2 ControlNet Interface Module
SKU: 1756-CN2

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