CRX Tack Function with Digital Inputs

In this practical tech short, we will walk through how to create and execute a tack welding macro program using digital inputs on a FANUC robot. Guided by an application engineer, the session focuses on building a reliable, operator-friendly solution that allows manual tack welding at the push of a button. Whether you are supporting production or refining your programming workflow, this overview introduces a structured approach that balances flexibility with control.

We will start by setting the foundation for a tack macro program, including how to properly configure it as a no motion macro and prepare it for logic-driven execution. From there, we will go over how to add key programming elements that ensure consistent weld performance. This includes setting override values to meet welding requirements and prevent common system errors, as well as integrating arc start and weld end instructions tied to your selected procedures and schedules.

As the workflow develops, we will also explore how digital inputs play a central role in controlling the tack process. By assigning a specific input, we can trigger and maintain welding activity based on real-time operator interaction. This creates a simple but powerful interface where the robot responds directly to a button press, maintaining the weld only as long as the signal is active.

Finally, we will cover how to connect everything through the macro table and confirm that your setup is ready for use on the shop floor. The result is a clean, repeatable method for manual tack welding that integrates seamlessly into existing robot operations.

Requirements

• Basic familiarity with the FANUC teach pendant interface
• Access to a robot system with arc welding capabilities
• A defined welding procedure and schedule
• Available digital inputs for operator control
• Proper system permissions to create and edit macro programs

What we will learn

• How to create and configure a tack macro program
• How to apply logic that supports controlled welding execution
• Why override settings are important for avoiding errors
• How to assign and use digital inputs for manual triggering
• How to connect the macro to the system through the macro table
• How to execute a functional operator-controlled tack weld process

This session provides a clear path to building a practical automation feature that enhances both usability and consistency. Join us to learn how to simplify tack welding operations while maintaining precise control over your robotic system.