What causes KUKA Robot alarm KRC0407?

Excessive number of INTERRUPT ON statements for different trigger conditions or events in the program. Including multiple external files or libraries that each define their own interrupt handlers without consolidation. Defining interrupt handlers for every possible sensor input or safety condition without prioritization. Legacy program code or imported projects designed for different KUKA system architectures with higher interrupt limits. Lack of proper interrupt management strategy resulting in unnecessary duplicate or redundant interrupt declarations.

How do I fix KUKA Robot alarm KRC0407?

1. Use the search function in WorkVisual to locate all INTERRUPT ON statements and count total declarations across all files 2. Analyze each interrupt handler to determine if it is essential or if functionality can be combined with existing interrupts 3. Consolidate multiple related interrupt conditions into single handlers using conditional logic to reduce total count below 16 4. Remove any redundant or obsolete interrupt declarations that are no longer required for program functionality 5. Implement a priority-based interrupt strategy where only critical events trigger interrupts and others use polling methods 6. Recompile the program after reducing interrupt count and verify all essential safety and sensor monitoring remains functional

KUKA Robot codes

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KUKA Robot Controller

System · Intermediate

Alarm KRC0407

KUKA Robot KRC0407 - MORE THAN 16 INTERRUPTS DEFINED

The KRL program has declared more than 16 interrupt handlers using the INTERRUPT ON command, which exceeds the maximum number of simultaneous interrupts supported by the KRC4 controller. The system cannot compile or execute programs that violate this hardware limitation.

KUKA RobotSystemIntermediate

KRC0407

KUKA Robot KRC0407 - MORE THAN 16 INTERRUPTS DEFINED

MORE THAN 16 INTERRUPTS DEFINED

Common Causes

Excessive number of INTERRUPT ON statements for different trigger conditions or events in the program
Including multiple external files or libraries that each define their own interrupt handlers without consolidation
Defining interrupt handlers for every possible sensor input or safety condition without prioritization
Legacy program code or imported projects designed for different KUKA system architectures with higher interrupt limits
Lack of proper interrupt management strategy resulting in unnecessary duplicate or redundant interrupt declarations

Troubleshooting Steps

1Use the search function in WorkVisual to locate all INTERRUPT ON statements and count total declarations across all files
2Analyze each interrupt handler to determine if it is essential or if functionality can be combined with existing interrupts
3Consolidate multiple related interrupt conditions into single handlers using conditional logic to reduce total count below 16
4Remove any redundant or obsolete interrupt declarations that are no longer required for program functionality
5Implement a priority-based interrupt strategy where only critical events trigger interrupts and others use polling methods
6Recompile the program after reducing interrupt count and verify all essential safety and sensor monitoring remains functional

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