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Heidenhain Controller
Communication · Intermediate · 30-120 minutes
Heidenhain 230-0440 - Real-time-buffer transfer from integr. oscill. is beginning
Alarm 230-0440 indicates the real-time buffer transfer from the integrated oscilloscope is beginning, typically triggered by data transmission issues between the interpolator and oscilloscope display functions. This alarm often occurs when the TNC's internal data buffers are overwhelmed or when there are timing conflicts in the real-time data acquisition system.
Heidenhain 230-0440 - Real-time-buffer transfer from integr. oscill. is beginning
Real-time-buffer transfer from integr. oscill. is beginning
Heidenhain TNC error 230-0440: Real-time-buffer transfer from integr. oscill. is beginning. This alarm indicates a fault or error condition on the Heidenhain TNC control that requires investigation. Refer to the Heidenhain NC error message documentation for the specific cause and remedy for this alarm code.
Root Cause Summary
Alarm 230-0440 indicates the real-time buffer transfer from the integrated oscilloscope is beginning, typically triggered by data transmission issues between the interpolator and oscilloscope display functions. This alarm often occurs when the TNC's internal data buffers are overwhelmed or when there are timing conflicts in the real-time data acquisition system.
Safety
Causes and Fixes
Check oscilloscope sampling rate settings
Navigate to MOD function → Settings → Machine Parameters → MP7680 (oscilloscope sampling rate) and reduce the sampling frequency to decrease data load.
Start with 1kHz sampling rate and gradually increase until stable operation is achieved.
Verify real-time buffer size configuration
Check MP7685 (real-time buffer size) in machine parameters and increase buffer allocation if system memory allows.
Increasing buffer size may affect overall system performance - monitor carefully.
Clear oscilloscope data and restart acquisition
In the oscilloscope menu, select 'Clear All Data' then restart the measurement to reset buffer pointers and clear any corrupted data streams.
Call a technician if:
Prevention
Common Mistakes
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
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