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[DIY-Cable] PLC “Vigor” Programing Cable

Creating Your Own PLC Vigor Programming Cable: A Step-by-Step Guide


In the world of industrial automation, having a reliable programming cable for your PLC (Programmable Logic Controller) is essential. These cables facilitate communication between your PC and PLC, enabling you to program, monitor, and troubleshoot your automation systems effectively.

However, finding the right cable can sometimes be challenging or costly. That’s why today, we will guide you through the process of making your own PLC Vigor programming cable. The best part? It’s a straightforward task that requires just one USB cable and one COM DB9-Female jack.

The Significance of a Programming Cable

Before we dive into the details of creating your programming cable, let’s understand why having a proper programming cable for your PLC is crucial:

  • Reliable Communication: A well-constructed programming cable ensures stable and reliable communication between your PC and PLC, preventing data transmission errors.
  • Cost-Efficiency: Purchasing a ready-made programming cable can be expensive, especially for specialized PLC models. Creating your cable can save you a significant amount of money.
  • Customization: DIY programming cables allow you to tailor the cable’s length and connectors to your specific needs, making them highly versatile.

Now that we’ve established the importance of a programming cable, let’s move on to the steps to create your own PLC Vigor programming cable.

Components You’ll Need

Prior to starting, collect the subsequent components and tools:

  • USB Cable: Select a USB cable with a USB-A male connector on one end. The other end can be cut, as you will be attaching the DB9-Female jack to it.
  • COM DB9-Female Jack: Ensure you have a high-quality DB9-Female jack, as this will be the interface connecting to your PLC.
  • Soldering Iron and Solder: A soldering iron and solder are essential for securing the connections.
  • Heat-Shrink Tubing (optional): This tubing can be used to insulate and protect the soldered connections.
  • Wiring Diagram: Obtain a wiring diagram specific to your PLC model. The wiring diagram will indicate which pins on the DB9-Female jack need to be connected to which wires.
[DIY-Cable] PLC “Vigor” Programing Cable

Crafting Your PLC Vigor Programming Cable

Here’s a step-by-step guide on how to create your own PLC Vigor programming cable:

1. Prepare the USB Cable

Cut one end of the USB cable, leaving enough length to work with. Usually, a few inches (5-7 cm) should suffice.

Strip the outer insulation of the cut end to expose the individual wires inside.

2. Examine the Wiring Diagram

Refer to the wiring diagram provided for your PLC model. This diagram is essential, as it specifies which pins on the DB9-Female jack correspond to the wires you need to connect.

3. Solder the Connections

Carefully solder the exposed wires from the USB cable to the corresponding pins on the DB9-Female jack. Pay close attention to matching the wire colors to the pin assignments on the wiring diagram.

Ensure that your solder connections are secure, and there is no stray solder bridging between adjacent pins.

4. Insulate the Connections (Optional)

To prevent short circuits or interference, you can insulate the soldered connections using heat-shrink tubing. Slide the tubing over each soldered connection and heat it to shrink and seal the insulation.

5. Test Your Cable

Before putting your DIY PLC Vigor programming cable to work, it’s essential to test it. Connect it to your PLC and PC, and verify that the communication is stable and error-free.

Troubleshooting Tips

As you create your programming cable, here are some troubleshooting tips to consider:

  • Check the Wiring Diagram: Make sure you have the correct wiring diagram for your specific PLC model. Using an incorrect diagram can lead to connection issues.
  • Inspect Your Soldering: Thoroughly examine your soldered connections to ensure they are secure and free from loose wires or stray solder.
  • Test Continuity: Use a multimeter to test for continuity between the connectors and cable ends. This helps identify any wiring errors.
  • Use Quality Components: Invest in high-quality connectors and a reliable USB cable to ensure the longevity and reliability of your programming cable.
  • Safety First: When soldering, exercise caution with hot soldering irons, and work in a well-ventilated area to prevent inhaling fumes.


Creating your own PLC Vigor programming cable is a practical and cost-effective solution that empowers you to maintain and optimize your automation systems. With the right components, tools, and a proper wiring diagram, you can craft a custom cable tailored to your specific PLC model. This DIY approach not only saves you money but also provides you with the flexibility to adapt to various automation scenarios.

As industrial automation technology advances, having a dependable programming cable remains a fundamental requirement. By mastering the art of creating your cables, you gain control over your automation projects and ensure their efficiency and reliability. Whether you’re a seasoned automation professional or an enthusiastic DIYer, this guide equips you with the knowledge to create a robust PLC Vigor programming cable for your unique needs.

Technical Guides
What Is a Programmable Logic Controller (PLC)? Full Explanation
What is HMI? Human-Machine Interface (HMI)-Full Explanation
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What Is a Servo drive and How Does it Work? It’s complete guidelines

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