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Access Safety Integrated commissioning interface on HMI or via STEP 7 Safety/Safety Integrated commissioning tool.

Review pending SI configuration changes in the safety data comparison screen to verify all modifications are intentional.

DO NOT confirm safety data unless you are authorized and have verified all changes are correct. Incorrect safety settings can cause machine hazards.

Execute the Safety Acceptance Test procedure as required by your safety documentation to validate the new configuration.

Safety acceptance tests must be performed according to machine manufacturer guidelines and local safety regulations.

Confirm SI data using the acknowledgment function, enter required passwords, and perform a control restart to activate the new safety configuration.

Verify you have the correct SI password level (typically safety password level 3 or 4) required for confirming safety data.

Check machine documentation for the authorized safety password or contact machine manufacturer if password is unknown.

Never bypass or circumvent safety password protection. Unauthorized access violates safety regulations.

Log in with proper safety authorization level and reattempt the SI data confirmation procedure.

If password issues persist, verify NCK and PLC safety software versions are compatible and up-to-date per Siemens documentation.

Check PROFIBUS/PROFINET communication status between NCK and safety PLC, verify all safety-related bus connections are active and error-free.

Review safety PLC diagnostics for communication faults or timeout errors during SI data transfer.

Perform a complete power cycle of the control system (NCK and PLC) to reset communication channels, then reload and reconfirm SI data.

Ensure machine is in a safe state before power cycling. Follow lockout/tagout procedures.

If error persists, reload the safety program and SI configuration from backup archives, then repeat confirmation procedure.

Only use verified backup files from known good configuration states.