102005

Review the NC program line where the alarm occurred and identify what data creation operation is being attempted (variable definition, subroutine creation, etc.).

Check if the data definition is placed in the correct program section. Move variable definitions (DEF, VAR, etc.) to the beginning of the program or subroutine before any executable NC statements.

All variable and data definitions must be declared in the definition section, not within the execution logic of the program.

Verify the program is not attempting to create data in system directories or protected areas. Check file path and ensure write permissions exist.

Modify the program structure to place all data declarations in appropriate sections, then reset the alarm and restart the program.

Access the control diagnostics and check available memory in the NC system. Navigate to HMI > Diagnostics > Memory to view current usage.

Check the storage capacity of the target directory or partition. For file creation, verify available disk space on the hard drive or CF card.

Minimum 10% free space should be maintained on system storage devices for proper operation.

Delete unnecessary files, old programs, or archived data to free up space. Use the Program Manager to remove unused NC programs and subdirectories.

If memory limits are reached for specific data types (e.g., GUD, PUD), review machine data settings MD18210-18230 (global user data) or MD18350-18370 (program user data) and increase allocation if permissible.

Changing machine data requires OEM authorization and control restart. Document original values before modification.

Examine the exact NC block where the alarm occurs and verify the syntax against SINUMERIK programming manual for the specific control version (840D sl, 840D pl, etc.).

Check if attempting to dynamically create data during program execution that should be statically defined. Verify that dynamic data creation functions are supported by your control version.

Verify the data type being created is valid for the target location. For example, ensure GUD (Global User Data) definitions are in appropriate INI files, not in part programs.

Correct the syntax or restructure the program to use proper data creation methods. Use static definitions in appropriate initialization files or program headers.