1784-CP10 | Allen-Bradley PC-to-PLC Serial Cable, 9-Pin to 25-Pin, 10 ft
1784-CP10 | Allen-Bradley PC-to-PLC Serial Cable, 9-Pin to 25-Pin, 10 ft
1784-CP10 | Allen-Bradley PC-to-PLC Serial Cable, 9-Pin to 25-Pin, 10 ft
    1784-CP10 | Allen-Bradley PC-to-PLC Serial Cable, 9-Pin to 25-Pin, 10 ft
1784-CP10 | Allen-Bradley PC-to-PLC Serial Cable, 9-Pin to 25-Pin, 10 ft

1784-CP10 | Allen-Bradley PC-to-PLC Serial Cable, 9-Pin to 25-Pin, 10 ft

Part #: 1784-CP10 Manufactured by: Allen-Bradley
$229.00
$229.00
3 in Stock
Condition: New – Open box
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Product Overview
CABLE ASSY, 10FT/3.20M, IBM AT OR COMPATIBLE CMPTR
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Product Description P/N: 1784-CP10

Description / Specifications

Description 

The Allen-Bradley 1784-CP10 is a serial communication cable designed to connect a PC’s 9-pin serial port to the 25-pin serial interface of PLC-5 controllers. Identified by part number 1784-CP10, it provides a reliable link for programming, monitoring, and data exchange. Its 10-foot length and robust construction support dependable use in industrial automation environments.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLCs/Machine Control
Part Number 1784-CP10
Subcategory PLC Battery/Cable/Accessory
Type Serial communication cable
Applications PLC-5 systems
Connector Type Female-to-female
Used With PLC-5 controllers
Cable Length 10 ft (3.20 m)
Standard KC
Temperature Rating 0 to 60 °C
Interface 9-pin to 25-pin RS-232

 

 

Information About 1784-CP10

The 1784-CP10 is part of Allen-Bradley’s accessory family developed to interface PCs with PLC-5 controllers for configuration and communication tasks. Its construction features high-quality materials and female-to-female connectors that ensure electrical compatibility between differing serial port formats. The cable integrates easily into existing PLC-5 systems, offering a simple method for establishing RS-232 serial communication during programming or maintenance. Typical applications include controller configuration, program uploads/downloads, and diagnostic communication in environments requiring a stable PC-to-PLC connection.

Key Features:

  • PC-to-PLC connectivity: Links 9-pin PC serial ports to 25-pin PLC-5 serial ports.
  • Female-to-female connectors: Ensures compatibility with standard RS-232 interfaces.
  • Industrial durability: Designed for reliable operation in automated environments.
  • 10-ft length: Provides adequate reach for flexible equipment positioning.
  • Wide temperature rating: Operates from 0 to 60 °C for general industrial use.
  • Standards compliant: Meets KC requirements for communication accessories.
  • PLC-5 compatibility: Purpose-built for use with Allen-Bradley PLC-5 controllers.

The 1784-CP10 delivers the reliability and precision required for stable serial communication between PCs and PLC-5 control systems.

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Frequently Asked Questions about 1784-CP10
Question: What is the 1784-CP10 cable used for?
Date Update:18/06/2025
Answer:

The 1784-CP10 is a programming cable made by Allen-Bradley (Rockwell Automation). It is used to connect a PC's serial (RS-232) COM port to the 8-pin mini-DIN programming port on Allen-Bradley PLCs such as SLC 5/03, 5/04, and 5/05 controllers.

Question: What devices are compatible with the 1784-CP10 cable?
Date Update:18/06/2025
Answer:

The cable is designed to work with:

  • SLC 500 series (SLC 5/03, 5/04, 5/05)
  • MicroLogix 1000, 1200 (via adapters)
  • PanelView terminals with an RS-232 (DF1) port
Question: What is the pinout of the 1784-CP10 cable?
Date Update:18/06/2025
Answer:

The 1784-CP10 cable connects a PC’s standard serial port (which uses a DB9 female connector) to the 8-pin Mini-DIN port found on the front of certain Allen-Bradley programmable logic controllers (PLCs), such as the SLC 5/03, 5/04, and 5/05 models.

Here’s how the internal wiring is typically arranged:

  • The Transmit (TXD) signal from the PC, which comes from pin 3 on the DB9 connector, is wired to the Receive (RXD) line on the PLC, which is pin 3 on the Mini-DIN.
  • The Receive (RXD) signal on the PC, which comes into pin 2 of the DB9, is connected to the Transmit (TXD) line from the PLC, which is pin 4 of the Mini-DIN.
  • The Signal Ground (GND), which is pin 5 on the DB9, connects directly to pin 5 on the Mini-DIN side to establish a shared electrical reference.
  • The Request to Send (RTS) signal from the PC, on pin 7 of the DB9, is wired to pin 6 of the Mini-DIN.
  • The Clear to Send (CTS) signal, coming into pin 8 on the DB9, is connected to pin 2 of the Mini-DIN.

This specific wiring allows for DF1 full-duplex communication, meaning data can be sent and received simultaneously. It also includes full hardware handshaking, which improves reliability—especially in electrically noisy environments commonly found in industrial control systems.

Question: Is the 1784-CP10 a null modem or straight-through cable?
Date Update:18/06/2025
Answer:

It is a custom-wired cable, similar to a null modem cable but specifically tailored for Allen-Bradley PLC communication using the DF1 full-duplex protocol.

Question: Can I use a USB-to-Serial adapter with this cable?
Date Update:18/06/2025
Answer:

Yes, a USB-to-Serial (RS-232) adapter can be used in conjunction with the 1784-CP10 cable if your PC does not have a built-in COM port. Ensure the adapter uses a chipset compatible with Rockwell software, such as FTDI.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1784-CP10 is a serial communication cable designed to connect a PC’s 9-pin serial port to the 25-pin serial interface of PLC-5 controllers. Identified by part number 1784-CP10, it provides a reliable link for programming, monitoring, and data exchange. Its 10-foot length and robust construction support dependable use in industrial automation environments.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLCs/Machine Control
Part Number 1784-CP10
Subcategory PLC Battery/Cable/Accessory
Type Serial communication cable
Applications PLC-5 systems
Connector Type Female-to-female
Used With PLC-5 controllers
Cable Length 10 ft (3.20 m)
Standard KC
Temperature Rating 0 to 60 °C
Interface 9-pin to 25-pin RS-232

 

 

Information About 1784-CP10

The 1784-CP10 is part of Allen-Bradley’s accessory family developed to interface PCs with PLC-5 controllers for configuration and communication tasks. Its construction features high-quality materials and female-to-female connectors that ensure electrical compatibility between differing serial port formats. The cable integrates easily into existing PLC-5 systems, offering a simple method for establishing RS-232 serial communication during programming or maintenance. Typical applications include controller configuration, program uploads/downloads, and diagnostic communication in environments requiring a stable PC-to-PLC connection.

Key Features:

  • PC-to-PLC connectivity: Links 9-pin PC serial ports to 25-pin PLC-5 serial ports.
  • Female-to-female connectors: Ensures compatibility with standard RS-232 interfaces.
  • Industrial durability: Designed for reliable operation in automated environments.
  • 10-ft length: Provides adequate reach for flexible equipment positioning.
  • Wide temperature rating: Operates from 0 to 60 °C for general industrial use.
  • Standards compliant: Meets KC requirements for communication accessories.
  • PLC-5 compatibility: Purpose-built for use with Allen-Bradley PLC-5 controllers.

The 1784-CP10 delivers the reliability and precision required for stable serial communication between PCs and PLC-5 control systems.

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