Comprehensive Guide to Configuring Sinamics G120C with Siemens PLC

Key Takeaways

What is Sinamics G120C?A versatile, modular drive system designed for various industrial applications.
What is a Siemens PLC?A programmable logic controller used for automation and control in industrial settings.
Why configure Sinamics G120C with Siemens PLC?To achieve efficient and precise control in automation processes.
What tools and software are needed for configuration?Programming cable, power supply, and TIA Portal software.
What are Command Data Sets (CDS)?CDS are configurations that allow switching between different command sources.
What are the basic steps for configuration?Setting up hardware, using TIA Portal for configuration, and setting parameters.


At ControlNexus, established in 2013, we specialize in providing high-quality Siemens PLCs, HMIs, and Inverters. In this guide, we will explore the step-by-step process of configuring the Sinamics G120C with Siemens PLCs, ensuring you can maximize the potential of your automation systems.

Overview of Sinamics G120C and Siemens PLC

Sinamics G120C is a versatile, modular drive system designed to meet a wide range of industrial requirements. It provides efficient motor control, energy savings, and reliability, making it an ideal choice for various applications.

Siemens PLC is a programmable logic controller that plays a crucial role in industrial automation. It offers high performance, flexibility, and scalability, which are essential for modern manufacturing processes. For more information, visit Siemens PLCs.

Importance of Configuring These Devices Together

Configuring Sinamics G120C with Siemens PLC ensures seamless integration and optimal performance of your automation system. This configuration allows precise control, efficient energy usage, and enhances the overall productivity of your operations.

Preparing for Configuration

Required Tools and Software

Before starting the configuration, ensure you have the following tools and software:

Pre-Configuration Checklist

  • Verify the compatibility of Sinamics G120C with your Siemens PLC model.
  • Ensure all necessary cables and connectors are available.
  • Install the latest version of TIA Portal software.
  • Back up existing PLC and drive configurations.

Understanding Command Data Sets (CDS)

What is a Command Data Set?

Command Data Set (CDS) is a configuration that allows the drive to switch between different command sources, such as fieldbus and digital inputs. This flexibility is crucial for adapting to various operational requirements.

Types of Command Data Sets

CDS can be configured for different communication methods. Here are some key parameters associated with CDS:

  • P840: Defines the source for the OFF1 command.
  • P810: Selects the CDS configuration.
  • P811: Additional parameter for CDS selection.

By setting these parameters correctly, you can ensure seamless switching between command sources, optimizing the drive’s performance.

Step-by-Step Configuration Guide

Setting Up the Hardware

  1. Connecting Sinamics G120C to Siemens PLC:
    • Use the appropriate programming cable to connect the drive to the PLC.
    • Ensure all connections are secure and the power supply is stable.
  2. Wiring and Initial Setup:
    • Follow the wiring diagram provided in the Sinamics G120C manual.
    • Double-check all connections to avoid any errors during configuration.

Using TIA Portal for Configuration

  1. Opening a New Project in TIA Portal:
    • Launch TIA Portal and create a new project.
    • Add the Sinamics G120C and Siemens PLC to your project by selecting the appropriate device catalog.
  2. Configuring Communication Settings:
    • Set up the communication parameters for PN (Profinet) communication.
    • Ensure that the drive and PLC are correctly configured to communicate with each other.

Parameter Settings

  1. Detailed Guide on Setting Parameters:
    • P840: Configure for different command sources (e.g., telegram, digital input).
    • P810: Select the CDS configuration.
  2. Configuring CDS for Different Modes:
    • Example: Set CDS0 for fieldbus communication and CDS1 for digital input control.
  3. Practical Examples:
    • Example 1: Configuration for fieldbus communication.
      • Step-by-step instructions on setting parameters for fieldbus communication.
    • Example 2: Configuration for digital input control.
      • Detailed guide on configuring parameters for digital input.

Troubleshooting and Optimization

Common Issues and Solutions

When configuring Sinamics G120C with Siemens PLC, you might encounter some common issues. Here are a few typical problems and their solutions:

  • Communication Errors:
    • Issue: The drive and PLC are not communicating.
    • Solution: Check the network settings in TIA Portal. Ensure that the IP addresses are correctly configured and that both devices are on the same network.
  • Parameter Mismatch:
    • Issue: The drive is not responding to PLC commands.
    • Solution: Verify that the parameters set in the drive match those in the PLC program. Double-check parameters such as P840 and P810.
  • CDS Configuration Issues:
    • Issue: The drive does not switch between command sources correctly.
    • Solution: Ensure that the CDS parameters are set up properly. For example, configure P840[0] for telegram and P840[1] for digital input.

Optimizing Performance

To get the most out of your Sinamics G120C and Siemens PLC, consider the following optimization tips:

  • Parameter Fine-Tuning: Regularly review and adjust parameters to match your application requirements. This can improve performance and efficiency.
  • Routine Maintenance: Perform regular checks and maintenance on your devices. This helps in identifying and rectifying potential issues before they become serious problems.
  • Firmware Updates: Keep the firmware of both the drive and PLC up-to-date to ensure compatibility and access to the latest features.

Practical Applications and Use Cases

Real-World Examples

Configuring Sinamics G120C with Siemens PLC can be applied in various industrial settings. Here are a few real-world examples:

  • Manufacturing: In a manufacturing plant, precise motor control is crucial for assembly lines. Using Sinamics G120C with a Siemens PLC allows for smooth operation and efficient energy use.
  • Material Handling: For conveyor systems, integrating the drive and PLC ensures synchronized movement, reducing bottlenecks and improving throughput.
  • HVAC Systems: In heating, ventilation, and air conditioning systems, accurate control of fans and pumps is essential. This setup helps maintain optimal environmental conditions while saving energy.

Case Studies

  • Automotive Industry: A leading automotive manufacturer implemented Sinamics G120C with Siemens PLCs in their production line. The result was improved precision in motor control and a significant reduction in energy consumption.
  • Food and Beverage: A beverage company optimized its bottling process using this configuration. The system’s flexibility allowed for quick adjustments to the production line, accommodating different bottle sizes and speeds.

Expert Tips and Advice

Best Practices for Configuration

  • Documentation: Keep detailed records of your configuration settings. This will be invaluable for troubleshooting and future adjustments.
  • Training: Ensure that your team is well-trained in both the hardware and software aspects of the configuration. This reduces errors and enhances productivity.
  • Consultation: Don’t hesitate to consult Siemens’ technical support or other experts for complex issues. Their insights can save you time and resources.

Advanced Configuration Techniques

For advanced users, here are some techniques to further optimize your system:

  • Scripting in TIA Portal: Use scripts to automate repetitive tasks in your configuration process. This can save time and reduce the chance of errors.
  • Custom Function Blocks: Create custom function blocks in TIA Portal to handle specific tasks that are unique to your application. This can streamline your programming and make your PLC code more modular and easier to manage.
  • Integration with Other Systems: Explore ways to integrate your Sinamics G120C and Siemens PLC with other systems in your facility. This could include SCADA systems for higher-level monitoring and control.

Visual Aids and Resources

Screenshots and Diagrams

Including visual aids can significantly enhance the understanding of the configuration process. Below are some essential screenshots and diagrams:

  • Hardware Setup Diagram: Illustrate the connections between Sinamics G120C and Siemens PLC.
  • TIA Portal Screenshots: Show the steps involved in adding devices and configuring parameters.
  • Parameter Settings Screenshots: Highlight key parameter settings and how to adjust them.

Additional Resources

For more detailed information and further learning, consider these resources:

  • Siemens Documentation: Comprehensive manuals and datasheets are available on the Siemens website.
  • Support Forums: Engage with the community on Siemens’ industry support forums to share experiences and solutions.
  • Training Programs: Enroll in Siemens’ training programs to get hands-on experience with their products and software.


Configuring Sinamics G120C with Siemens PLC is a powerful way to enhance your industrial automation. By following this guide, you can ensure a smooth setup and optimize the performance of your system. For more products and solutions, visit ControlNexus.

For further assistance, don’t hesitate to contact us. We’re here to help you achieve the best results with your Siemens automation products.


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