ControlLogix Communication Modules (1756)
Chassis modules that connect ControlLogix to plant networks. Explore Allen-Bradley 1756 communication modules for EtherNet/IP, ControlNet and DeviceNet, including mature models.
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The ControlLogix Series
What is the product family?
The Allen-Bradley ControlLogix communication module series includes 1756 chassis modules designed to connect a ControlLogix system to plant networks. The range features EtherNet/IP, ControlNet and DeviceNet modules, including redundant and extreme temperature versions.
Where is it used?
ControlLogix communication modules are commonly used in production lines and process plants, where they bridge the controller to I/O, drives, HMIs and other controllers.
Models, compatibility and lifecycle
Models within the range differ in network, redundancy and temperature rating. Rockwell lists the 1756-EN2T, EN2TR, EN2F, EN2TXT, EN3TR and DNB as Active and the CN2, CN2R and CN2RXT as Active Mature. Match the series and firmware when replacing a module.
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Frequently asked questions
Questions buyers often ask about Allen-Bradley 1756 products. Not answered here? Contact us.
Which order number should I send for Allen-Bradley ControlLogix Communication Modules parts?
The complete order number from the label of the existing unit, including every suffix, with the hardware revision and firmware version where shown. Parts in the same family can look alike and still differ.
How quickly do Allen-Bradley ControlLogix Communication Modules parts ship?
Usually ships within 3 to 7 working days of order confirmation. The exact lead time depends on the part and is stated on your quote.
What condition are Allen-Bradley ControlLogix Communication Modules parts supplied in?
New, factory sealed. The condition is also stated on your quote.
Do Allen-Bradley ControlLogix Communication Modules parts come with a warranty and testing?
Every product comes with a written warranty. The period depends on the model and its condition, and is stated on your quote before you order. Testing depends on the product, ranging from visual inspection to full functional testing, and is confirmed on your quote.
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