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Allen-Bradley 1756-CN2R ControlLogix Communication Module

Allen-Bradley 1756-CN2R ControlLogix Communication Module

Brand	Allen-Bradley
Module Number	1756-CN2R
Unit Price	$500
Country Of Origin	USA
Weight	0.6KG
Certificate	C/O from the Chamber of Commerce C/Q from the Manufacturer
Warranty	12 Months
Inventory Qty	10

Allen-Bradley 1756-CN2R is a ControlNet communication module for the Rockwell ControlLogix platform. Supports high-speed, deterministic industrial network interconnection and is suitable for demanding industrial automation scenarios.

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Description

Allen-Bradley 1756-CN2R Technical specifications

Parameter Category	Specific Indicators
Communication Protocol	CIP over ControlNet (compliant with ANSI/ISA-88 standard)
Physical Layer	Supports twisted pair (RG-6/U coaxial cable, 75Ω impedance) or fiber optic (multi-mode SC interface, requires optional optical module)
Communication Rate	Twisted pair: 5Mbps (default) or 2.5Mbps; Fiber optic: 5Mbps (requires optical module)
Maximum Number of Nodes	99 nodes (same network)
Topology Structure	Bus-type (twisted pair) or star-type (via repeaters for expansion)
Media Redundancy	Supports MRP (Media Redundancy Protocol), switchover time ≤ 300ms
Backplane Interface	ControlLogix backplane (compatible with controller racks such as 1756-A7/A8 series)
Power Requirement	Backplane-powered (typical: 5V DC, ≤ 2W)
Operating Temperature	0°C to 60°C (no condensation); Storage: -40°C to 85°C
Protection Rating	IP20 (indoor installation; additional protection required for harsh environments)
Mechanical Dimensions	12.7mm (height) × 114.3mm (width) × 127mm (depth)
Certifications	UL 508, CE, cULus, RoHS

Payment&Security

Beneficiary's Bank: CITIBANK N.A.
Beneficiary address:Champion Tower,Three Garden Road,Central,Hong Kong
Beneficiary: Vogi International Trading Co., Limited
Account No.: 395714900
Bank Code: 006 Branch Code: 391
Swift Code:CITIHKHX (CITIHKHXXXX * If 11 characters are required)
Payment Term：T/T

DataSheet Download

Allen-Bradley 1756-CN2R Key features

Backplane integration: Directly plug into the ControlLogix controller rack, powered by the backplane, and simplified wiring.

Rich diagnostics: Supports online status monitoring and can quickly troubleshoot faults through the RSWho tool.

Strong compatibility: Supports interoperability with older ControlNet devices and is compatible with a variety of ControlLogix controllers.

Typical cooperation cases

Automobile manufacturing: General Motors' Detroit factory welding production line synchronizes 50+ robot movements through ControlNet, with a delay stable within 0.5ms to avoid welding deviation.

Semiconductor manufacturing: TSMC's wafer processing plant is used for real-time communication between lithography machines and material transmission systems to ensure stable production of 200 wafers per hour.

Petroleum refining: ExxonMobil's Texas refinery connects 200+ valves and sensors through ControlNet to achieve closed-loop control of reactor pressure.