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Check Current Protection Level

Navigate to HMI → Services → Protection and verify the current active protection level. Level 1 (end user) has limited editing rights.

Protection levels 2-7 provide increasing access rights for different user categories

Enter Higher Protection Level

Press the protection key softkey and enter the appropriate password for protection level 2 (setup) or higher to enable editing functions.

Only use authorized passwords and document any protection level changes

Verify Edit Access

Attempt to access the previously restricted display editing function to confirm proper authorization level is now active.

Check MD Settings

Verify machine data MD9100 $MN_PROTECT_WRITE_ACCESS and MD9102 $MN_PROTECT_READ_ACCESS for proper protection configuration.

Check Operating Mode

Verify the current mode selector position on the machine control panel. AUTO mode typically restricts editing functions.

Mode restrictions are defined in MD11210 $MN_WRITE_ENABLE_MASK

Switch to Setup Mode

Turn the mode selector to SETUP or JOG mode to enable display editing capabilities while maintaining machine safety.

Ensure machine is in a safe state before changing operating modes

Verify Program Status

Check that no NC program is currently running or in interrupted state that would maintain editing restrictions.

Test Edit Function

Attempt the display editing operation again to confirm mode change resolved the restriction.

Access HMI Configuration

Navigate to HMI → Startup → HMI and check the display configuration lock settings in the system parameters.

Look for OEM-specific lock parameters that may restrict display modifications

Check Setting Data

Review setting data SD42700 $SN_HMI_EDIT_ENABLE and related HMI control parameters for edit restrictions.

Verify OEM Settings

Check if OEM-specific machine data or cycle parameters have locked the display editing functionality through custom restrictions.

Reset HMI Configuration

If authorized, reset HMI configuration to default state or modify lock parameters to enable editing access.

Document original settings before making changes to HMI configuration

Check Program Status

Navigate to Program → Program Status and verify if any NC program is in RUN, HOLD, or INTERRUPTED state.

Stop Program Execution

Press the RESET key to properly terminate any active NC program execution and clear the program status.

Ensure machine is in safe position before resetting active programs

Clear Program Buffer

Verify that the NC program buffer is cleared and no background processing is maintaining the edit lock.

Verify Channel Status

Check all active channels for program execution status using the channel overview display to ensure complete program termination.

Check System Status

Navigate to Diagnostics → System Status and review active system processes that may be locking display resources.

Wait for Process Completion

Allow any active system processes such as backup, compile, or configuration changes to complete before attempting display editing.

Perform Soft Reset

Execute a soft reset of the HMI system through Services → Reset → Soft Reset to clear any stuck resource locks.

Save any unsaved work before performing system reset operations

Monitor System Resources

Check CPU load and memory usage in system diagnostics to identify any resource conflicts preventing display editing.