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Heidenhain Controller
Communication · Intermediate · 30-120 minutes
HEIDENHAIN 235-00A3 - Modul im falschen Steckplatz
HEIDENHAIN alarm 235-00A3 indicates that I/O modules or expansion cards are installed in incorrect slots on the TNC control or connected PLC devices. This typically occurs when hardware configuration parameters don't match the physical module placement or when modules have been physically moved without updating the system configuration.
235-00A3
HEIDENHAIN 235-00A3 - Modul im falschen Steckplatz
Modul im falschen Steckplatz
In an HSCI device, modules are in the wrong slots. The physical module positions do not match the configuration.
Root Cause Summary
HEIDENHAIN alarm 235-00A3 indicates that I/O modules or expansion cards are installed in incorrect slots on the TNC control or connected PLC devices. This typically occurs when hardware configuration parameters don't match the physical module placement or when modules have been physically moved without updating the system configuration.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access machine parameter configuration
Press MOD key, select 'Machine Parameters', navigate to MP7300 series (Hardware Configuration) parameters.
Document current MP7300 settings before making changes
- 2
Compare physical vs configured layout
Check MP7301-MP7320 slot assignments against actual module positions in the control cabinet. Note the alarm message shows required slot vs actual slot.
Never remove modules while system is powered
- 3
Update configuration parameters
Modify MP7300 series parameters to match physical module placement, or relocate modules to match existing configuration.
Use TNCguide documentation to verify correct MP parameter values for your specific modules
- 4
Restart control system
Perform complete power cycle of TNC control to reinitialize hardware detection with new parameters.
Call a technician if:
- ·Physical module damage observed
- ·Multiple HSCI communication failures
- ·Unable to access machine parameters
- ·Safety system modules involved
Prevention
- Document all hardware changes in maintenance log
- Verify MP7300 parameters after any module replacement
- Use proper ESD protection when handling modules
- Keep backup of working machine parameters
Common Mistakes
- Moving modules without updating parameters
- Ignoring slot numbering sequence
- Mixing different module generations
- Not checking HSCI address conflicts
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Always verify with your machine manual or a certified technician before performing service procedures.