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Heidenhain Controller
Parameter · Intermediate · 30-120 minutes
HEIDENHAIN 230-0473 - Fast input cannot be activated
Alarm 230-0473 occurs when the TNC control cannot activate a fast input due to mismatches between the configured I/O setup and actual hardware. This typically happens when the IOC configuration file doesn't match the physical I/O modules or when simulation mode conflicts with hardware expectations.
230-0473
HEIDENHAIN 230-0473 - Fast input cannot be activated
Fast input cannot be activated
A fast input cannot be activated due to hardware mismatch or configuration issues. This may occur in simulation mode or with incorrect options.
Root Cause Summary
Alarm 230-0473 occurs when the TNC control cannot activate a fast input due to mismatches between the configured I/O setup and actual hardware. This typically happens when the IOC configuration file doesn't match the physical I/O modules or when simulation mode conflicts with hardware expectations.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access I/O Configuration
Navigate to MOD function → System Parameters → I/O Configuration to view current IOC settings.
Always backup the working IOC file before making changes
- 2
Compare Hardware to Configuration
Check physical I/O modules against the IOC file entries, noting module types and slot positions.
Power down system before physically inspecting I/O modules
- 3
Update IOC File
Use IOConfig software to regenerate IOC file matching actual hardware configuration, then transfer to control.
Verify fast input assignments in MP7500-MP7599 range after IOC update
- 4
Restart Control System
Perform complete power cycle to load new IOC configuration and clear alarm condition.
Call a technician if:
- ·IOC file corruption requiring factory restoration
- ·Multiple I/O module failures
- ·PLC program modifications needed
Prevention
- Maintain backup copies of working IOC files
- Document all I/O configuration changes
- Perform regular I/O module status checks
- Avoid simulation mode during production
Common Mistakes
- Forgetting to restart after IOC changes
- Modifying IOC without backing up original
- Ignoring module LED status indicators
- Mixing up fast input and standard input parameters
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