
ControlLogix Communication Module
Part Number: 1756-cn2r
The Allen-Bradley 1756-CN2R is a ControlLogix Communication Module designed for high-speed, redundant ControlNet network communication. It supports up to 99 nodes, features two ControlNet BNC ports, and is suitable for demanding industrial automation environments.
Specifications
| Communication | ControlNet | 
| Number of Channels | 2 | 
| Redundancy | Yes | 
| Transmission Rate | 5000 kbps | 
| Logix Communication Connections | 128 | 
| Power Dissipation | 6.7 W | 
| Thermal Dissipation | 22.9 btu/h | 
| ControlNet Ports | 2 BNC | 
| Max Nodes | 99 | 
| Current Draw | 1300mA @ 5.1V DC, 3mA @ 24V DC | 
| Operating Temperature | 0 to 60 °C | 
| Storage Temperature | -40 to 85 °C | 
| Relative Humidity | 5...95% noncondensing | 
| Weight | 0.54 kg | 
| Enclosure Type | None (open-style) | 
| Slot Width | 1 |