What causes Siemens SINUMERIK alarm 112211?

NC memory is full or nearly full due to large part programs or multiple programs stored in memory. Insufficient free memory allocated to NC program storage in system configuration. Tool table or offset data has grown excessively large. Memory fragmentation from repeated program edits and tool preselection operations. Background processes or diagnostics consuming available NC memory.

How do I fix Siemens SINUMERIK alarm 112211?

1. Check available NC memory using the Diagnosis menu (System Information > Memory) to determine current usage and available free space 2. Delete unnecessary or completed NC programs from memory to free up space for the preselection operation 3. Clear the NC program buffer by performing a controlled reset or cold start if no active job is running 4. Verify tool preselection parameters in the Machine Data (MD) to ensure memory allocation is optimized for your application 5. If memory remains insufficient, contact your machine tool builder to increase NC memory allocation or perform a memory expansion

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-60 minutes

Alarm 112211

Siemens 840D 112211 - Tool preselection cannot be processed. enough NC memory.

When tool preselection is processed, the NC program has to be generated again. Hereby the old NC program is saved first. Then the new program is generated. Here, the NC memory is insufficient to save the new program. The tool preselection is not processed.

Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

112211

Siemens 840D 112211 - Tool preselection cannot be processed. enough NC memory.

Tool preselection cannot be processed. enough NC memory.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Common Causes

NC memory is full or nearly full due to large part programs or multiple programs stored in memory
Insufficient free memory allocated to NC program storage in system configuration
Tool table or offset data has grown excessively large
Memory fragmentation from repeated program edits and tool preselection operations
Background processes or diagnostics consuming available NC memory

Troubleshooting Steps

1Check available NC memory using the Diagnosis menu (System Information > Memory) to determine current usage and available free space
2Delete unnecessary or completed NC programs from memory to free up space for the preselection operation
3Clear the NC program buffer by performing a controlled reset or cold start if no active job is running
4Verify tool preselection parameters in the Machine Data (MD) to ensure memory allocation is optimized for your application
5If memory remains insufficient, contact your machine tool builder to increase NC memory allocation or perform a memory expansion

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