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Heidenhain Controller
Servo/Axis · Intermediate · 30-120 minutes
HEIDENHAIN 230-022E - No connection to the SQL server
HEIDENHAIN alarm 230-022E indicates the TNC control cannot establish communication with the configured SQL database server. This typically occurs due to network connectivity issues, incorrect database configuration parameters, or SQL server service problems.
230-022E
HEIDENHAIN 230-022E - No connection to the SQL server
No connection to the SQL server
This TNC7/TNC 640 error indicates an issue with 230-022E. No connection to the SQL server.
Root Cause Summary
HEIDENHAIN alarm 230-022E indicates the TNC control cannot establish communication with the configured SQL database server. This typically occurs due to network connectivity issues, incorrect database configuration parameters, or SQL server service problems.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Check physical network connection
Verify Ethernet cable connection at X116 connector on TNC control and check link LED status on network interface.
Ensure machine is in safe state before accessing control cabinet
- 2
Test network connectivity
Access MOD function, select 'System Info' and check network adapter status. Verify IP address assignment and ping SQL server IP if accessible.
Use MOD > Network Settings to view current IP configuration and adapter status
- 3
Verify network infrastructure
Check network switch ports, cables, and ensure SQL server is powered on and accessible from other network devices.
Call a technician if:
- ·Network infrastructure changes required
- ·SQL server configuration changes needed
- ·Persistent connection failures after basic troubleshooting
Prevention
- Configure automatic NTP time synchronization
- Implement network monitoring for SQL server availability
- Document and backup database configuration parameters
- Establish redundant network paths if critical
Common Mistakes
- Forgetting to check SQL Server Browser service for named instances
- Not verifying firewall settings after network changes
- Using incorrect port numbers for custom SQL installations
- Overlooking time synchronization requirements
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
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Always verify with your machine manual or a certified technician before performing service procedures.