How to use the SPOT Instruction with a Servo Gun

In this tech short, we will go over the fundamentals of using the spot instruction in robotic welding applications. Whether you’re new to programming servo guns or looking to refine your approach, this session provides a clear, practical overview of the essential steps and settings you need to know.

We’ll start by reviewing the core parameters of the spot instruction, including start distance, pressure, thickness, weld schedule, and end distance. You’ll learn where to locate these settings within the data menus and how they influence the robot’s motion during a weld cycle. From there, we’ll explore how distance schedules define entrance and exit moves, and why CNT and ACC values matter for smooth transitions.

Next, we’ll cover the pressure table and thickness measurement process, showing you how to configure manual pressure operations and adjust gun settings for optimal performance. You’ll also see how step mode works and why it’s useful for teaching weld positions accurately.

Gun sag compensation is another critical topic we’ll address. We’ll explain what gun sag is, why it occurs, and how to apply different compensation methods to maintain precision. Finally, we’ll tie everything together with a demonstration of multiple spot welds, highlighting best practices for avoiding obstacles and fine-tuning corner rounding.

Requirements:

• Servo gun setup and pressure calibration completed
• Tip wear properly configured
• Access to teach pendant and robot programming environment

What you will learn:

• How to configure spot instruction parameters
• Where to find distance and pressure tables
• How to measure part thickness and apply it to welds
• How to use step mode for accurate teaching
• Methods for gun sag compensation and why they matter
• Tips for optimizing weld paths and avoiding interference

By the end of this session, you’ll have a solid understanding of how to implement spot instructions effectively, ensuring consistent weld quality and efficient robot motion. Sign up now to gain practical insights that will help you streamline your welding processes.