7500

Check the NC program block %1 and identify the REDEF command syntax. Verify the protection level parameter value being assigned.

Cross-reference the current protection level for command %2 by examining the part program header or consulting MD 28200 (ProtectionLevelGroup) and MD 28210 (ProtectionLevelCommand) to understand existing protection level assignments.

Protection level values: PL1=1 (highest), PL2=2, PL3=3, PL4=4, PL5=5 (lowest security)

Modify the REDEF command to assign a protection level with an equal or lower numerical value (equal or higher security rank) than the current level. If current level is PL3, only PL1 or PL2 are permitted.

Verify the corrected REDEF syntax and re-execute the NC program. Monitor NCK diagnostics via HMI menu path: Diagnostics > NC > Protection Levels to confirm successful assignment.

Consult the NC part program and extract the exact command syntax from block %1. Identify command %2 and verify it is a standard protected command type (typically M-functions or custom macro commands).

Reference MD 28250 (ProtectionLevelCommands_Valid) in the SINUMERIK documentation or System Parameters menu to confirm command %2 is in the list of REDEF-eligible commands for your configuration.

System-level G-codes and rapid positioning commands often cannot be redefined

If command %2 is not eligible, either select an alternative command that supports protection level redefinition or remove the REDEF statement and apply protection via initial program header declarations.

Analyze the NC program call stack for block %1. Identify if the REDEF command exists in a called subprogram (CALL or INCALL) that may inherit protection constraints from the parent program.

Review the parent program's protection level declarations and compare with the protection level being assigned in the REDEF command in block %1. Ensure child programs do not attempt to assign lower-ranked protection levels.

Move all REDEF declarations to the appropriate program scope (typically the main program header) or restructure the program hierarchy to comply with SINUMERIK's protection level cascade rules documented in MD 28000-28299 (Protection Level Parameters).