Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 62300

Siemens 62300 - Block : Check number of empirical value memory

Alarm 62300 indicates a mismatch or corruption in the empirical value memory (servo tuning/compensation data) for the specified channel and block. This typically occurs when the NCK cannot verify the integrity of stored servo parameter sets or when empirical values exceed configured memory allocation limits.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

62300

Siemens 62300 - Block : Check number of empirical value memory

Block: Check number of empirical value memory

-- Control reaction: Alarm display.

Root Cause Summary

Alarm 62300 indicates a mismatch or corruption in the empirical value memory (servo tuning/compensation data) for the specified channel and block. This typically occurs when the NCK cannot verify the integrity of stored servo parameter sets or when empirical values exceed configured memory allocation limits.

Safety

  • Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.

Causes and Fixes

  1. 1

    Navigate to Siemens HMI > Diagnostics > Parameters > Machine Data and locate MD30370 for the affected channel. Document the current maximum empirical value count.

  2. 2

    Check NCK > Servo > Empirical Values menu to count active compensation records. If count exceeds MD30370 setting, delete unused or obsolete empirical value sets.

    Deleting empirical values will reset servo compensation for affected operating points.

  3. 3

    If legitimate tuning data must be retained, increase MD30370 value incrementally (typical range 10-100), then perform a warm restart (POWER ON/OFF cycle) to reload the servo memory.

Service Recommended confidence

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