


Product Description
Allen-Bradley 1756-CN2/B ControlNet Module
Product Overview
The Allen-Bradley 1756-CN2/B is a ControlNet Communication Module designed for ControlLogix systems. It provides high-speed (5 Mbps) communication for real-time control and supports up to 128 Logix communication connections. This module is chassis-based and can be installed in any slot of a compatible ControlLogix chassis.
Technical Specifications
Attribute | 1756-CN2/B Details |
---|---|
Manufacturer | Allen-Bradley |
Model Number | 1756-CN2/B |
Description | ControlLogix ControlNet Communication Module |
Configuration | Standard |
ControlNet Communication Rate | 5 Mbps |
Logix Communication Connections | 128 |
Maximum Connections Supported | 131 |
Maximum Number of Nodes | 99 |
Current Draw @ 5.1V DC | 1100 mA |
Current Draw @ 24V DC | 3 mA |
Power Dissipation | 5.6 W |
Thermal Dissipation | 19.1 BTU/hr |
Isolation Voltage | 30V (continuous), Basic Insulation Type Type tested at 500V AC for 60 s |
Weight (Approx.) | 0.26 kg (0.57 lb) |
Slot Width | 1 |
Module Location | Chassis-based, any slot |
Compatible Chassis | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
Standard Power Supply Compatibility | 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B |
Redundant Power Supply Compatibility | 1756-PA75R, 1756-PB75R, 1756-PSCA2 |
ControlNet Port | 1 ControlNet BNC |
ControlNet Cable | 1786-RG6 Quad Shield RG6 Coaxial Cable |
USB Port | USB Full Speed (12 Mbps) |
Wiring Category | 1 (ControlNet ports) / 3 (USB ports) |
Temperature Code (North America) | T4A |
Temperature Code (IEC) | T4 |
Enclosure Type Rating | None (Open-Style) |