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Heidenhain Controller
Servo/Axis · Intermediate · 30-120 minutes
Heidenhain 237-3805 - 13805 UM-SOC: FS configuration data were falsified
Alarm 237-3805 indicates that the functional safety (FS) configuration data in the UM-SOC (Universal Motion Safety on Chip) has been corrupted or modified unexpectedly. This typically occurs when there's a mismatch between stored safety parameters and their checksums, or when safety configuration data becomes inconsistent between the TNC control and the drive system.
237-3805
Heidenhain 237-3805 - 13805 UM-SOC: FS configuration data were falsified
13805 UM-SOC: FS configuration data were falsified
Heidenhain TNC error 237-3805: 13805 UM-SOC: FS configuration data were falsified. 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 237-3805 indicates that the functional safety (FS) configuration data in the UM-SOC (Universal Motion Safety on Chip) has been corrupted or modified unexpectedly. This typically occurs when there's a mismatch between stored safety parameters and their checksums, or when safety configuration data becomes inconsistent between the TNC control and the drive system.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access Safety Configuration Menu
Navigate to MOD > System Parameters > Safety Parameters (MP7xxx series) to check current FS configuration status.
Document all current safety parameter values before making any changes
- 2
Verify FS Parameter Integrity
Check MP7300-MP7399 safety monitoring parameters for any corrupted or invalid values that don't match the original machine configuration.
Never modify safety parameters without proper authorization and safety assessment
- 3
Restore FS Configuration
Load the backup FS configuration file from PLC > Data Backup/Restore > Safety Data, or re-enter the original safety parameters if backup is unavailable.
- 4
Perform Safety Validation
Execute the FS validation sequence through MOD > Safety > Validate Configuration to ensure all safety parameters are properly synchronized.
Call a technician if:
- ·Safety parameter corruption requires certified safety engineer
- ·UM-SOC hardware replacement needed
- ·Multiple safety alarms present
Prevention
- Maintain stable power supply during safety operations
- Regular backup of FS configuration data
- Avoid simultaneous software updates and safety parameter changes
Common Mistakes
- Attempting to modify safety parameters without proper authorization
- Ignoring power quality issues
- Not validating FS configuration after any changes
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