Overview
The Allen Bradley 1756‑CN2R is a ControlNet communication bridge module used within the ControlLogix platform. It enables controllers, I/O modules, and other devices to communicate over a redundant ControlNet network.
The module supports dual BNC ports for redundant media, ensuring continuous operation even if one network path fails. In addition, it can handle up to 100 connections, making it suitable for large and complex automation systems.
Valued for its robust communication, redundancy features, and seamless integration with Rockwell Automation Logix controllers, the 1756‑CN2R is widely deployed in industries requiring high availability and deterministic communication.
Technical Data
| Parameter | Specification |
|---|---|
| Model Number | 1756‑CN2R |
| Product Type | ControlNet Communication Bridge Module |
| Dimensions | 14 × 13 × 3.5 cm |
| Weight | 0.25 kg |
Typical Applications
Redundant ControlNet Networks
Provides dual-media communication for high-availability automation systems.
Process Automation
Used in chemical, petrochemical, and refining plants for reliable controller-to-I/O communication.
Power Generation
Ensures deterministic communication in turbine and boiler control systems.
Manufacturing
Applied in automotive, food & beverage, and packaging industries requiring synchronized control.
Critical Infrastructure
Supports redundant communication in mission-critical facilities such as oil & gas pipelines and utilities.
Example:
In a refinery automation system, the 1756‑CN2R ensures continuous communication between controllers and distributed I/O, even if one ControlNet path fails. Its ability to manage up to 100 connections makes it suitable for large-scale automation networks.
FAQ
Q1: What is the primary function of the 1756‑CN2R?
A1: It provides redundant ControlNet communication for ControlLogix systems.
Q2: How many connections can it handle?
A2: It supports up to 100 connections simultaneously.
Q3: What type of ports does it have?
A3: It features two BNC ControlNet ports (A/B) for redundant media.
Q4: Is the module still active?
A4: Yes, it is listed as an Active Mature Product by Rockwell Automation.
Q5: What industries typically use this module?
A5: Energy, petrochemical, manufacturing, and critical infrastructure sectors.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
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