Description
Description
The Allen-Bradley 1756-CN2 is a high-performance communication module designed for the ControlLogix platform, specifically engineered to facilitate reliable data transfer over a ControlNet network. This module serves as a critical bridge for industrial automation systems, allowing for seamless integration and real-time communication between controllers, I/O, and other devices within the ControlLogix architecture.
Features
- Supports standard media for robust ControlNet connectivity.
- Provides high-speed data transfer rates of 5 Mbps.
- Supports up to 128 Logix connections for complex system configurations.
- Capable of managing up to 99 nodes on a single network.
- Designed for seamless integration within standard 1756 ControlLogix chassis.
Technical Specifications
| Product Model |
1756-CN2 |
| Communication Type |
ControlNet |
| Data Rate |
5 Mbps |
| Logix Connections |
128 |
| Maximum Nodes |
99 |
| Manufacturer |
Allen-Bradley |
Installation Guidelines
- Ensure the ControlLogix chassis is powered down before inserting or removing the 1756-CN2 module to prevent electrical damage or system faults.
- Verify that the module is fully seated in the chassis slot and the top and bottom latches are securely engaged.
- Follow standard industrial grounding practices to minimize EMI and ensure signal integrity across the ControlNet network.
- Use appropriate ControlNet cabling and ensure proper termination at both ends of the network trunk to maintain communication stability.
- Handle the module using ESD-safe practices to protect sensitive internal circuitry.
FAQ
What is the primary function of the 1756-CN2?
The 1756-CN2 is a communication interface module that allows a ControlLogix controller to communicate over a ControlNet network, supporting high-speed data exchange and multi-node connectivity.
How many nodes can this module support?
This specific model is capable of supporting up to 99 nodes on the ControlNet network.
Is the 1756-CN2 compatible with all ControlLogix chassis?
Yes, it is designed for standard 1756 ControlLogix chassis. Always ensure your firmware and project configuration are compatible with this specific hardware revision.
