Product Overview
The Allen-Bradley 1756-CP3 is a dedicated RS-232 programmer cable designed for the ControlLogix family. It creates a reliable link between Logix or SLC family controllers and Data Terminal Equipment (DTE) devices such as laptops or programming terminals. With a length of 10 feet (3 meters), this cable offers flexibility in setup while maintaining signal integrity. As an industrial automation module from Rockwell Automation, the 1756-CP3 ensures consistent programming and diagnostic connectivity in demanding environments.
Technical Specifications
| Specification |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1756-CP3 |
| Series |
ControlLogix |
| Cable Type |
Programmer Cable |
| Length |
10 feet (3 meters) |
| Weight |
0.64 pounds (0.293 kilograms) |
| ControlNet Communication Rate |
5 megabits per second |
| Configuration |
Redundant |
| Input Current |
970 mA at 5.1 VDC, 1.7 mA at 24 VDC |
| Thermal Dissipation |
17.4 BTU per hour |
| Power Dissipation |
5.1 Watts |
| Slot Width |
1 |
Key Features & Benefits
- Connects Logix or SLC family controllers to DTE devices via 9-pin to 9-pin RS-232 interface.
- 3-meter cable length provides ample reach during programming and diagnostics.
- Right-angle and straight connector ends allow versatile mounting in tight spaces.
- Redundant configuration enhances reliability in critical applications.
- Lightweight design (0.64 lbs) reduces strain on controller ports.
Industry Applications
The Allen-Bradley 1756-CP3 is essential for programming and troubleshooting ControlLogix and SLC systems in industries such as manufacturing, process control, and material handling. Its redundant configuration ensures uninterrupted communication in safety-critical setups. For example, in a production line where PLC uptime is vital, this cable provides a dependable connection for quick program updates and diagnostics, minimizing downtime.
Installation & Setup Guidance
To set up the Allen-Bradley 1756-CP3, connect the right-angle female 9-pin D-shell end to the controller's serial port. Then, plug the straight female 9-pin D-shell end into your computer or DTE device. Ensure both connectors are securely fastened. No special drivers are required for the cable itself; use the standard RS-232 communication settings in your programming software. Always verify that the controller and DTE device are powered off during connection to prevent port damage.
Maintenance & Reliability
Inspect the cable periodically for wear, especially at the connector ends and cable jacket. Keep connectors clean and free from dust or moisture. Avoid bending the cable beyond its natural radius, as this can damage internal wiring. With proper care, the 1756-CP3 provides years of reliable service, reducing replacement costs and improving operational efficiency.
Compatibility & Integration
The Allen-Bradley 1756-CP3 is designed for the ControlLogix series and is compatible with SLC Modular Programmable Controllers and Logix 5550 controllers. It connects to any DTE device with a standard 9-pin RS-232 serial port. This cable integrates seamlessly into existing Rockwell Automation environments, making it a straightforward choice for system upgrades or maintenance.
Buying Guide
Before purchasing the Allen-Bradley 1756-CP3, verify that your controller has a 9-pin female D-shell serial port and that your DTE device also has a 9-pin serial interface. If your computer lacks a serial port, you will need a USB-to-RS-232 adapter. The 1756-CP3 is a genuine Rockwell Automation product, ensuring compatibility and quality. For reliable sourcing, consider PLC Source PRO as your trusted supplier for genuine industrial automation parts.