What causes KUKA Robot alarm KRC0747?

Attempting to assign a primitive data type (INT, REAL, BOOL) to a variable declared as a structure type. Passing a non-structure variable as a parameter to a function expecting a structure type. Incorrect variable declaration missing the structure type definition. Using a structure member without properly referencing the parent structure variable. Attempting to access or manipulate a structure variable with incompatible or undefined type casting.

How do I fix KUKA Robot alarm KRC0747?

1. Review the KRL source code at the line indicated in the alarm message to identify the variable in question 2. Verify that the variable declaration matches its usage - ensure structure-type variables are declared with their proper data types 3. Check function signatures and ensure arguments passed match the expected structure types of parameters 4. Confirm that all custom structure types (STRUC) are properly defined before use in the program 5. Examine any type conversions or assignments to ensure they are compatible with the expected structure type 6. Recompile the KRL program after corrections to verify the syntax and type declarations are valid

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0747

KUKA Robot KRC0747 - VARIABLE WITH STRUCTURE TYPE EXPECTED 2083

This alarm indicates that a variable with a structure type was expected during KRL program compilation or execution, but a different data type was encountered instead. The compiler detected a type mismatch where a structured variable (custom data type) was required at the specified location in the code.

KUKA RobotSystemBasic

KRC0747

KUKA Robot KRC0747 - VARIABLE WITH STRUCTURE TYPE EXPECTED 2083

VARIABLE WITH STRUCTURE TYPE EXPECTED 2083

Common Causes

Attempting to assign a primitive data type (INT, REAL, BOOL) to a variable declared as a structure type
Passing a non-structure variable as a parameter to a function expecting a structure type
Incorrect variable declaration missing the structure type definition
Using a structure member without properly referencing the parent structure variable
Attempting to access or manipulate a structure variable with incompatible or undefined type casting

Troubleshooting Steps

1Review the KRL source code at the line indicated in the alarm message to identify the variable in question
2Verify that the variable declaration matches its usage - ensure structure-type variables are declared with their proper data types
3Check function signatures and ensure arguments passed match the expected structure types of parameters
4Confirm that all custom structure types (STRUC) are properly defined before use in the program
5Examine any type conversions or assignments to ensure they are compatible with the expected structure type
6Recompile the KRL program after corrections to verify the syntax and type declarations are valid

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