Product Details
Overview
The Allen-Bradley 1756-CN2R is a ControlLogix ControlNet communication bridge module designed to provide reliable high-speed network connectivity for PLC systems. Supporting up to 99 nodes and 131 simultaneous connections, this module enables efficient data exchange between ControlNet-enabled devices and the ControlLogix chassis. Ideal for both standard and redundant network configurations, it ensures consistent performance in demanding industrial environments.
Technical Specifications
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Manufacturer: Allen-Bradley (Rockwell Automation)
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Model / Part Number: 1756-CN2R
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Product Type: ControlLogix Communication Module
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Series: ControlLogix
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Module Type: Bridge Module
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Maximum Nodes: 99
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Maximum Connections: 131
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ControlNet Data Rate: 5 Mbps
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Number of ControlNet Ports: 2
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USB Port: 1 (Data rate 12 Mbps)
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Backplane Current Draw: 1.3 A at 5.1 VDC; 3 mA at 24 VDC
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Power Dissipation (Max): 6.7 W
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Thermal Dissipation: 22.9 BTU/hr
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Isolation Voltage: 30 VDC continuous
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Compatible Standard Power Supplies: 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
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Compatible Redundant Power Supplies: 1756-PA75R, 1756-PB75R, 1756-PSCA2
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Compatible Chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
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ControlNet Cable: 1786-RG6 quad shield RG6 coaxial cable
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Mounting: Any 1756 chassis, slot width 1
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Dimensions (L×W×H): 5.51 × 4.41 × 5.71 in (14 × 11.2 × 14.5 cm)
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Weight: 0.94 lbs (0.43 kg)
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Operating Temperature: 0–60 °C (32–140 °F)
Key Features
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High-speed ControlNet communication for large-scale PLC systems
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Supports redundant network configurations for critical applications
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Backplane-compatible with all standard ControlLogix chassis
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Low power consumption with efficient thermal management
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Provides two ControlNet ports plus one USB port for flexible connectivity
Applications
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Network bridge for ControlNet PLC systems
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Integration of multiple ControlLogix modules in manufacturing and process control
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Redundant network setups requiring reliable communication and failover
FAQs
Q1: How many nodes can the 1756-CN2R support?
The module supports up to 99 ControlNet nodes, suitable for large networked PLC systems.
Q2: Can it operate with redundant power supplies?
Yes, it is compatible with redundant units such as 1756-PA75R, 1756-PB75R, and 1756-PSCA2.
Q3: What chassis are compatible?
Compatible with 1756-A4, A7, A10, A13, and A17 chassis.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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