• Allen-Bradley 1756-CP3
  • Allen-Bradley 1756-CP3
  • Allen-Bradley 1756-CP3
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Allen-Bradley 1756-CP3 Serial Programming Cable

Allen-Bradley 1756-CP3 Serial Programming Cable

Description

The Allen-Bradley 1756-CP3 is a dedicated serial programming cable designed for the ControlLogix and SLC 500 controller families. It serves as the physical communication link between a controller's front-facing RS-232...

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SKU: 1756-CP3
Proveedora: Allen-Bradley
tipo: Programming Cable
Related Series:

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Description

The Allen-Bradley 1756-CP3 is a dedicated serial programming cable designed for the ControlLogix and SLC 500 controller families. It serves as the physical communication link between a controller's front-facing RS-232 port and a computer or other Data Terminal Equipment (DTE). This cable is essential for local programming, firmware updates, and troubleshooting when network-based communication, such as Ethernet or ControlNet, is unavailable or not yet configured.

Features

  • Right-Angle Connector: Features a right-angle 9-pin female D-shell connector at the controller end, allowing for chassis door closure during operation.
  • Null-Modem Configuration: Engineered for point-to-point serial communication, bridging transmit and receive pins between the PLC and PC.
  • Compatibility: Designed for use with Logix 5550, 5560, and 5570 controllers, as well as SLC 5/03, 5/04, and 5/05 modular processors.
  • Standard Interface: Compatible with standard PC COM ports or high-quality USB-to-Serial adapters.

Technical Specifications

Brand Allen-Bradley
Product Line ControlLogix / SLC 500
Cable Type Serial RS-232 Programmer Cable
Length 10 feet (3 meters)
Connector A 9-pin D-shell (Right-Angle Female)
Connector B 9-pin D-shell (Straight Female)
Protocol DF1 (RS-232)

Installation Guidelines

  • Ensure the controller is powered or in a safe state before connecting or disconnecting the cable to prevent potential communication errors.
  • The right-angle connector should be seated fully into the controller's front-facing port to ensure a secure connection.
  • Avoid routing the cable near high-voltage power lines or heavy electromagnetic interference (EMI) sources to maintain signal integrity during data transfer.
  • If using a USB-to-Serial converter, ensure the driver is correctly mapped to the COM port in your programming software (e.g., RSLinx).

FAQ

Is this cable compatible with USB ports?

The 1756-CP3 features a 9-pin serial connector. To use it with a modern computer lacking a native COM port, you must use a high-quality USB-to-Serial converter. Ensure the converter supports the DF1 protocol.

Can I keep this cable connected while the ControlLogix chassis door is closed?

Yes. The 1756-CP3 is specifically designed with a right-angle connector at the controller end to provide the necessary clearance for the chassis door to close while the cable is attached.