What causes Siemens SINUMERIK alarm 6035?

Parameter or machine data configuration error. Hardware fault on the NC or drive component. Part program error or illegal command. Communication fault between NC and drive or I/O modules. Software or firmware error requiring system restart.

How do I fix Siemens SINUMERIK alarm 6035?

1. Note the complete alarm text including any axis, channel, or block number values. 2. Check for related alarms active simultaneously in the SINUMERIK alarm list. 3. Power cycle the machine to clear transient faults. 4. Review the SINUMERIK machine data for parameters related to the alarm. 5. Consult the Siemens SINUMERIK alarm manual for alarm 6035 detailed remedy.

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 6035

Siemens 840D 6035 - Instead of KB the system has only KB of free user memory of type

Alarm 6035 indicates insufficient free user memory in the NCK after cold start, where actual available memory falls below the Siemens-specified minimum for the control variant. This is an informational alarm that does not halt NCK functions but signals memory configuration issues that may impact program capacity or real-time performance.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

6035

Siemens 840D 6035 - Instead of KB the system has only KB of free user memory of type

Instead of KB the system has only KB of free user memory of type

Root Cause Summary

Alarm 6035 indicates insufficient free user memory in the NCK after cold start, where actual available memory falls below the Siemens-specified minimum for the control variant. This is an informational alarm that does not halt NCK functions but signals memory configuration issues that may impact program capacity or real-time performance.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Access NCK machine data: Menu → Diagnostics → Machine Data → MD10200 and MD10210. Document current values.
Do not modify without recording original settings.
2
Cross-reference configured values against the control variant specification in the hardware manual (typically 840D 4GB systems allocate ~2000 KB NC program memory by default).
3
Reduce MD10200/MD10210 by 10-15% increments if they exceed variant baseline. Perform cold start (NCK power cycle) and monitor free memory report in diagnostics.
Verify sufficient space for all part programs before reducing allocation.
4
Confirm alarm clears after cold start. If persistent, document free memory value reported and compare to MD1000 (available memory) specification.

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