What causes Siemens SINUMERIK alarm 4019?

Machine data was changed requiring acknowledgment or power cycle. System configuration change notification. Commissioning or service operation generated this notice. Axis or drive configuration change affecting machine data.

How do I fix Siemens SINUMERIK alarm 4019?

1. Read the complete notice text on the SINUMERIK screen. 2. If a power cycle is indicated, perform a controlled machine power off and restart. 3. If machine data backup is indicated, save the current machine data. 4. Acknowledge the notice and verify the system is operating correctly after the change. 5. Consult the machine commissioning engineer if the notice is unexpected.

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Siemens SINUMERIK Controller

System · Intermediate · 30-120 minutes

Alarm 4019

Siemens 840D 4019 - Axis container advance not allowed with current status of NCU

Alarm 4019 occurs when attempting direct axis container advancement while other channels on the NCU are not in RESET status or when axes are not stationary. The SINUMERIK 840D enforces single-channel container advancement to prevent conflicting NC commands and axis motion conflicts.

Siemens SINUMERIKSystemIntermediate30-120 minutes

4019

Siemens 840D 4019 - Axis container advance not allowed with current status of NCU

Axis container advance not allowed with current status of NCU

Root Cause Summary

Alarm 4019 occurs when attempting direct axis container advancement while other channels on the NCU are not in RESET status or when axes are not stationary. The SINUMERIK 840D enforces single-channel container advancement to prevent conflicting NC commands and axis motion conflicts.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Access the NCK/PLC diagnostics via HMI: Diagnostics > Channels > Channel Status. Verify all secondary channels (Channel 2, 3, etc.) display 'RESET' status.
Do not force RESET if a secondary channel is executing a program; stop the program first via NC STOP command.
2
If secondary channel shows ACTIVE/RUN status, issue RESET via HMI or send NC command M30 + cycle stop to clear the channel.
3
Verify machine parameter MD10210 (CfgMaxNumChannels) matches your actual channel configuration. Mismatch between configured and physical channels can cause status confusion.

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