Allen Bradley 1756-CP3 ControlLogix Programmer Cable

Product Introduction

The Allen-Bradley 1756-CP3 is a dedicated RS-232 programming cable designed for use with ControlLogix systems. Developed by Rockwell Automation, this cable provides a reliable and direct communication interface between a programming device and ControlLogix controllers.

With a length of 3 meters, the 1756-CP3 offers sufficient flexibility for on-site configuration, commissioning, and maintenance tasks. It features a 9-pin D-shell connector design, including a 90-degree angled female connector and a straight female connector, allowing for convenient connections in tight control cabinet environments.

The cable is optimized for use with Logix5000 programming environments, ensuring stable data transmission during system setup and troubleshooting. Its robust construction and industrial-grade design make it suitable for repeated use in demanding automation environments.

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Product Specifications

Parameter	Description
Model	1756-CP3
Series	ControlLogix
Product Type	Programmer Cable
Communication Interface	RS-232
Cable Length	3 meters
Connector Type (End 1)	9-pin 90° Female D-shell
Connector Type (End 2)	9-pin Straight Female D-shell
Application	PLC Programming and Communication
Compatibility	ControlLogix Controllers
Supported Software	Logix5000
Signal Type	Serial Communication
Installation	Plug-and-play connection
Operating Environment	Industrial use
Shipping Weight	3 kg

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Applications

• PLC programming and configuration – Enables direct connection between a PC and ControlLogix controller

• System commissioning – Used during initial setup and parameter configuration of automation systems

• Maintenance and troubleshooting – Provides reliable communication for diagnostics and updates

• Industrial control environments – Suitable for factory automation and process control systems

• Engineering workstations – Connects programming terminals to PLC hardware for development tasks

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Advantages

• Stable RS-232 communication – Ensures reliable data transfer during programming and diagnostics

• Flexible cable length – 3-meter design allows convenient connection in various installation scenarios

• Industrial-grade connectors – Durable 9-pin D-shell connectors ensure secure connections

• Easy to use – Plug-and-play design simplifies installation and operation

• Optimized for Logix5000 – Seamless integration with ControlLogix programming software

• Suitable for tight spaces – 90-degree connector design improves usability in confined panels

FAQ

1. What is the main function of the 1756-CP3 cable?
   It is used to connect a computer to a ControlLogix controller for programming, configuration, and diagnostics via RS-232 communication.
2. What type of communication does this cable support?
   It supports RS-232 serial communication, commonly used for direct PLC programming connections.
3. Is this cable compatible with all ControlLogix controllers?
   Yes, it is designed specifically for ControlLogix systems that support RS-232 communication ports.
4. What software is typically used with this cable?
   It is commonly used with Logix5000 programming software for controller configuration and monitoring.
5. Why is one connector angled at 90 degrees?
   The angled connector allows easier installation in tight spaces, such as inside control panels.
6. Can this cable be used for continuous communication?
   It is primarily intended for programming and maintenance tasks rather than continuous operation.
7. Does the cable require any special drivers?
   Typically, standard serial communication drivers are sufficient, depending on the PC interface.
8. Is it suitable for industrial environments?
   Yes, it is designed with durable materials to withstand industrial usage conditions.
9. Can it be used with USB ports directly?
   No, a USB-to-RS232 converter is required if the computer does not have a serial port.
10. What should be checked if communication fails?
    Verify connector seating, COM port settings, cable integrity, and software configuration.

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