10240

Press the RESET button on the machine control panel to clear any active program execution and alarm states.

Check the channel status display to verify no program is running or paused. Ensure the channel shows 'RESET' or 'IDLE' state before attempting mode change.

If the channel was in synchronized motion with other channels in the mode group, wait for all synchronized operations to complete or execute controlled shutdown of coordinated movements.

Do not force mode changes during active multi-channel synchronized machining operations as this may cause axis positioning errors.

Attempt the mode change again after confirming channel is in ready state. If alarm persists, proceed to next troubleshooting block.

Access machine data and review MD10000 $MN_MODEGROUP_SPEC[n] to verify the mode group configuration for the affected mode group number shown in %2 parameter.

Check all channels assigned to the same mode group - verify their current operating modes via the channel overview display. Note any channels in AUTO, MDA, or JOG modes.

If multiple channels are assigned to the mode group, bring all channels to RESET state before attempting mode change on the target channel. This ensures no synchronization conflicts exist.

Coordinate with machine operator to ensure no production interruption when resetting multiple channels.

Review SD43210 $SC_MODE_CHANGE_MASK settings to verify which mode transitions are permitted for this channel configuration. Adjust if necessary per machine manufacturer specifications.

Access PLC diagnostics and monitor DB10 (NCK-to-PLC interface). Check mode enable bits for the affected channel, specifically DB10.DBX60.0-60.7 for mode group enable signals.

Verify all safety interlocks are satisfied: check door interlocks, emergency stop status, and hydraulic/pneumatic pressure signals. Monitor PLC inputs that affect mode enable conditions.

Do not bypass safety interlocks. Address the root cause of any safety signal failures.

Check for PLC alarm messages or conditions that may be blocking mode changes. Review machine manufacturer PLC logic for mode-change permissive conditions specific to this machine.

Perform a controlled NCK-PLC communication test: cycle power to the NCU if persistent communication errors are detected in NCK/PLC diagnostics. Monitor DB10/DB11 handshake after restart.

Coordinate system power cycle with production schedule. Ensure proper shutdown sequence to avoid data loss.