330-00C0

Check self-test interval status

Access MOD function and navigate to Settings > Machine Parameters. Check MP7266 SAFE_TEST_INTERVAL value and compare with elapsed time since last test.

Default interval is usually 8760 hours (1 year) but can be machine-specific

Initiate safety self-test

Press MOD key, select 'Safety' menu, then 'Self-test'. Follow the on-screen prompts to execute the complete safety function verification cycle.

Ensure all personnel are clear of machine during self-test execution

Verify test completion

Monitor the self-test progress display until 'Test completed successfully' message appears. Check that alarm 330-00C0 clears automatically.

Document the test completion date for maintenance records

Check safety PLC status

Navigate to MOD > Diagnosis > Safety PLC. Verify communication status and check for any red status indicators or timeout messages.

Look for 'SAFE PLC OK' status in the diagnosis screen

Verify safety bus connections

Inspect the safety bus cable connections between TNC control and safety PLC. Check connector X116 on TNC side and corresponding safety module connections.

Power down system before checking physical connections

Reset safety communication

Perform a controlled restart of the safety system via MOD > Settings > Safety > Reset Safety System, then attempt self-test procedure.

Wait 30 seconds after safety reset before initiating self-test

Backup current parameters

Use MOD > File Management to create backup of current machine parameters (*.PAR file) and safety configuration before making changes.

Save to external USB device for safety

Restore safety parameters

Navigate to MOD > Settings > Restore Parameters. Load the last known good safety parameter set or factory defaults for safety-related MPs (MP7200-MP7299 range).

Only restore safety parameters if you have the correct configuration file

Reconfigure self-test interval

Set MP7266 SAFE_TEST_INTERVAL to appropriate value (typically 8760 hours) and reset the test timer via MOD > Safety > Reset Test Timer.

Consult machine documentation for manufacturer-specific interval requirements

Verify system time

Check current date/time display in TNC control. Navigate to MOD > Settings > General > Date/Time to verify accuracy against actual time.

Compare with external time source to confirm accuracy

Check RTC battery voltage

Access MOD > Diagnosis > Hardware Info and check RTC battery voltage. Should read 3.0-3.6V for proper operation.

Low RTC battery can cause time/date loss during power cycles

Replace RTC battery if needed

If battery voltage is below 3.0V, replace the lithium RTC battery (typically CR2032) located on the TNC main board.

Keep system powered during battery replacement to maintain settings