KRC0492

Common Causes

• Custom data type or ENUM defined in one file but not properly exported to other program modules
• Circular dependency between custom type definitions in different KRL source files
• Mismatch between type definitions in WorkVisual project and the KRC4 controller memory
• Incomplete first compilation where type information was not fully registered in the controller
• Using custom types in global declarations without proper struct or ENUM keyword syntax

Troubleshooting Steps

1. 1Check the error message file reference and line number to identify the problematic data type declaration
2. 2Verify that all ENUM and custom type definitions use proper KRL syntax and are declared in header files accessible to dependent modules
3. 3Ensure that custom data types are defined before they are used in variable declarations throughout the program
4. 4Clear the controller memory by performing a complete project reload or factory reset of the KRC4 system if necessary
5. 5Perform an initial download of the entire WorkVisual project, waiting for full compilation completion
6. 6Execute a second download cycle through the smartPAD GUI to allow proper type registration and cross-module linking